release(langgraph): 1.2.11 (#8595)

Bumps the minor-and-patch group with 7 updates in the /libs/langgraph
directory:

| Package | From | To |
| --- | --- | --- |
| [langchain-core](https://github.com/langchain-ai/langchain) | `1.4.8`
| `1.5.3` |
| [xxhash](https://github.com/ifduyue/python-xxhash) | `3.8.0` | `3.8.1`
|
| [syrupy](https://github.com/syrupy-project/syrupy) | `5.3.4` | `5.5.3`
|
| [redis](https://github.com/redis/redis-py) | `8.0.1` | `8.1.0` |
| [ruff](https://github.com/astral-sh/ruff) | `0.15.20` | `0.16.1` |
| [ty](https://github.com/astral-sh/ty) | `0.0.55` | `0.0.66` |
| [anyio](https://github.com/agronholm/anyio) | `4.14.1` | `4.14.2` |


Updates `langchain-core` from 1.4.8 to 1.5.3
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/langchain-ai/langchain/releases">langchain-core's
releases</a>.</em></p>
<blockquote>
<h2>langchain-core==1.5.3</h2>
<p>Changes since langchain-core==1.5.2</p>
<p>release(core): 1.5.3 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39145">#39145</a>)
fix(core): fall back to <code>LANGSMITH_API_KEY</code> for gateway (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39115">#39115</a>)</p>
<h2>langchain-core==1.5.2</h2>
<p>Changes since langchain-core==1.5.1</p>
<p>release(core): 1.5.2 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39108">#39108</a>)
fix(core): handle empty string in gateway env vars (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39107">#39107</a>)
chore: bump setuptools from 82.0.0 to 83.0.0 in /libs/core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39032">#39032</a>)
chore: bump jupyterlab from 4.5.9 to 4.5.10 in /libs/core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39033">#39033</a>)
chore: bump setuptools from 80.9.0 to 83.0.0 in /libs/text-splitters (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39029">#39029</a>)</p>
<h2>langchain-core==1.5.1</h2>
<p>Changes since langchain-core==1.5.0</p>
<p>release(core): 1.5.1 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39042">#39042</a>)
feat(anthropic,fireworks,openai): support langsmith gateway through env
var (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/38742">#38742</a>)
fix(core): use <code>tool_call_schema</code> cache for
<code>BaseTool</code> token counting in
<code>count_tokens_approximately</code> (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39020">#39020</a>)</p>
<h2>langchain-core==1.5.0</h2>
<p>Changes since langchain-core==1.4.9</p>
<p>release(core): 1.5.0 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/38978">#38978</a>)
feat(core): add <code>reasoning_effort</code> as a standard chat model
parameter (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/38887">#38887</a>)
chore: bump soupsieve from 2.8 to 2.8.4 in /libs/core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/38750">#38750</a>)
chore: bump mistune from 3.2.1 to 3.3.0 in /libs/core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/38783">#38783</a>)</p>
<h2>langchain-core==1.4.9</h2>
<p>Changes since langchain-core==1.4.8</p>
<p>release(core): 1.4.9 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/38728">#38728</a>)
fix(core): improve langsmith loader error messages (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35648">#35648</a>)
fix(core): output parser bugs in xml.py and pydantic.py (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35641">#35641</a>)
style(core): fix some ruff preview rules (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/38656">#38656</a>)
fix(core): avoid <code>dict</code> shadowing in language models (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/38480">#38480</a>)
fix(core): <code>_parse_google_docstring</code> mishandling continuation
lines with colons (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/35680">#35680</a>)
fix(core): add messages to bare <code>raise ValueError</code> calls (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/38158">#38158</a>)
fix(core): use <code>asyncio.get_running_loop()</code> in async contexts
(<a
href="https://redirect.github.com/langchain-ai/langchain/issues/38157">#38157</a>)
chore: bump langsmith from 0.8.0 to 0.8.18 in /libs/core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/38319">#38319</a>)
chore: bump jupyterlab from 4.5.7 to 4.5.9 in /libs/core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/38326">#38326</a>)
chore: bump vcrpy from 8.1.1 to 8.2.1 in /libs/core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/38327">#38327</a>)</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/langchain-ai/langchain/commit/01d8481ae3d457ec3751cbb0331ea3a4b720fa90"><code>01d8481</code></a>
release(core): 1.5.3 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39145">#39145</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/b8a6e36d3f810302c66065ea1c2892da000de550"><code>b8a6e36</code></a>
chore(model-profiles): refresh model profile data (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39141">#39141</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/cdca311de2958e497cfd823a45ddb770d0ef94c0"><code>cdca311</code></a>
fix(core): fall back to <code>LANGSMITH_API_KEY</code> for gateway (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39115">#39115</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/a5a8762436658b218dbfc5efff9e8ab8fabbe62f"><code>a5a8762</code></a>
ci: annotate uv bump workflow with PR links (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39112">#39112</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/557c0a986d5068085a945dcb3c9ce27257c4add8"><code>557c0a9</code></a>
chore(deps): bump uv to 0.12.0 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39111">#39111</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/835c85ae236a2d33cd11de4c98d28cbc6ebbd72f"><code>835c85a</code></a>
release(anthropic): 1.5.3 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39109">#39109</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/c1ab807b1f62ad04274c28f2b7d8c3141d8ba1f2"><code>c1ab807</code></a>
release(core): 1.5.2 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39108">#39108</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/313223347f842274432d8a2968b4be407e2722d8"><code>3132233</code></a>
fix(anthropic): preserve empty thinking field in signature_delta
streaming (#...</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/b3a6d9a012681df8a8e33345c8255ca69ec0e437"><code>b3a6d9a</code></a>
chore(model-profiles): refresh model profile data (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/39105">#39105</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/447b51abbccde236838524ee717682a0dd2a6c09"><code>447b51a</code></a>
fix(anthropic): strip unsupported fields from system message content
blocks (...</li>
<li>Additional commits viewable in <a
href="https://github.com/langchain-ai/langchain/compare/langchain-core==1.4.8...langchain-core==1.5.3">compare
view</a></li>
</ul>
</details>
<br />

Updates `xxhash` from 3.8.0 to 3.8.1
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/ifduyue/python-xxhash/releases">xxhash's
releases</a>.</em></p>
<blockquote>
<h2>v3.8.1</h2>
<ul>
<li>Register the &quot;benchmark&quot; pytest mark to avoid
PytestUnknownMarkWarning</li>
<li>Update C extension docstrings and remove stale comments</li>
</ul>
<hr />
<p>Full list of changes: <a
href="https://github.com/ifduyue/python-xxhash/compare/v3.8.0...v3.8.1">https://github.com/ifduyue/python-xxhash/compare/v3.8.0...v3.8.1</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/ifduyue/python-xxhash/blob/master/CHANGELOG.rst">xxhash's
changelog</a>.</em></p>
<blockquote>
<p>v3.8.1 2026-07-06</p>
<pre><code>
- Register the &quot;benchmark&quot; pytest mark to avoid
PytestUnknownMarkWarning
- Update C extension docstrings and remove stale comments
</code></pre>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/ifduyue/python-xxhash/commit/0a1adf7b6a5f26b821272985a0a987cca5446c23"><code>0a1adf7</code></a>
Release v3.8.1</li>
<li><a
href="https://github.com/ifduyue/python-xxhash/commit/aa419ca1478219b7ba2ad18a8fe05ca9d29288bc"><code>aa419ca</code></a>
Prepare 3.8.1</li>
<li><a
href="https://github.com/ifduyue/python-xxhash/commit/e26b770f19b5eabd1c58d098206e5c9adfcef5d1"><code>e26b770</code></a>
docs: update C extension docstrings and remove stale comments</li>
<li><a
href="https://github.com/ifduyue/python-xxhash/commit/aa69707513c4ba8c52a4bebc23f0aada7844decc"><code>aa69707</code></a>
Register the “benchmark” pytest mark</li>
<li>See full diff in <a
href="https://github.com/ifduyue/python-xxhash/compare/v3.8.0...v3.8.1">compare
view</a></li>
</ul>
</details>
<br />

Updates `syrupy` from 5.3.4 to 5.5.3
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/syrupy-project/syrupy/releases">syrupy's
releases</a>.</em></p>
<blockquote>
<h2>v5.5.3</h2>
<h2>What's Changed</h2>
<p>This release has no functional changes. It just fixes an issue where
the release tag pointed to the previous commit instead of the commit
with the updated pyproject.toml (see <a
href="https://redirect.github.com/syrupy-project/syrupy/issues/1144">syrupy-project/syrupy#1144</a>).</p>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/syrupy-project/syrupy/compare/v5.5.2...v5.5.3">https://github.com/syrupy-project/syrupy/compare/v5.5.2...v5.5.3</a></p>
<h2>v5.5.2</h2>
<h2>What's Changed</h2>
<ul>
<li>fix: Fix detecting <code>pytest-xdist</code> when loaded via
<code>PYTEST_PLUGINS</code> by <a
href="https://github.com/mgorny"><code>@​mgorny</code></a> in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1142">syrupy-project/syrupy#1142</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/mgorny"><code>@​mgorny</code></a> made
their first contribution in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1142">syrupy-project/syrupy#1142</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/syrupy-project/syrupy/compare/v5.5.1...v5.5.2">https://github.com/syrupy-project/syrupy/compare/v5.5.1...v5.5.2</a></p>
<h2>v5.5.1</h2>
<h2>What's Changed</h2>
<ul>
<li>fix: Defer registering <code>pytest-xdist</code> hook
<code>pytest_testnodedown</code> to avoid &quot;unknown hook&quot; error
by <a
href="https://github.com/edgarrmondragon"><code>@​edgarrmondragon</code></a>
in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1140">syrupy-project/syrupy#1140</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a
href="https://github.com/edgarrmondragon"><code>@​edgarrmondragon</code></a>
made their first contribution in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1140">syrupy-project/syrupy#1140</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/syrupy-project/syrupy/compare/v5.5.0...v5.5.1">https://github.com/syrupy-project/syrupy/compare/v5.5.0...v5.5.1</a></p>
<h2>v5.5.0</h2>
<h2>What's Changed</h2>
<ul>
<li>feat: detect unused snapshots under pytest-xdist by <a
href="https://github.com/frenck"><code>@​frenck</code></a> in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1132">syrupy-project/syrupy#1132</a></li>
</ul>
<blockquote>
<p><strong>NOTE</strong>: Test suites using pytest-xdist that previously
passed due to incomplete snapshot support may now fail if unused
snapshots are detected. You can use <code>--snapshot-warn-unused</code>
to downgrade unused snapshot detection from an error to a warning though
it's not recommended.</p>
</blockquote>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/syrupy-project/syrupy/compare/v5.4.0...v5.5.0">https://github.com/syrupy-project/syrupy/compare/v5.4.0...v5.5.0</a></p>
<h2>v5.4.0</h2>
<h2>What's Changed</h2>
<ul>
<li>feat: add --snapshot-no-cleanup to keep unused snapshots on update
by <a href="https://github.com/frenck"><code>@​frenck</code></a> in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1126">syrupy-project/syrupy#1126</a></li>
<li>fix: honor boolean operators in -k snapshot selection by <a
href="https://github.com/frenck"><code>@​frenck</code></a> in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1127">syrupy-project/syrupy#1127</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/syrupy-project/syrupy/compare/v5.3.4...v5.4.0">https://github.com/syrupy-project/syrupy/compare/v5.3.4...v5.4.0</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/syrupy-project/syrupy/blob/main/CHANGELOG.md">syrupy's
changelog</a>.</em></p>
<blockquote>
<h2><a
href="https://github.com/syrupy-project/syrupy/releases/tag/v5.5.3">v5.5.3</a>
(2026-07-11)</h2>
<h2>What's Changed</h2>
<ul>
<li>chore(deps): update astral-sh/setup-uv action to v8.3.0 by <a
href="https://github.com/renovate"><code>@​renovate</code></a>[bot] in
<a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1143">syrupy-project/syrupy#1143</a></li>
<li>chore(deps): update astral-sh/setup-uv action to v8.3.1 by <a
href="https://github.com/renovate"><code>@​renovate</code></a>[bot] in
<a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1145">syrupy-project/syrupy#1145</a></li>
<li>chore(deps): update dependency hypothesis to v6.156.2 by <a
href="https://github.com/renovate"><code>@​renovate</code></a>[bot] in
<a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1147">syrupy-project/syrupy#1147</a></li>
<li>chore(deps): update dependency mypy to v2.2.0 by <a
href="https://github.com/renovate"><code>@​renovate</code></a>[bot] in
<a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1148">syrupy-project/syrupy#1148</a></li>
<li>chore(deps): update dependency hypothesis to v6.156.3 by <a
href="https://github.com/renovate"><code>@​renovate</code></a>[bot] in
<a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1150">syrupy-project/syrupy#1150</a></li>
<li>chore: closes <a
href="https://redirect.github.com/syrupy-project/syrupy/issues/1144">#1144</a>
by <a href="https://github.com/noahnu"><code>@​noahnu</code></a> in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1146">syrupy-project/syrupy#1146</a></li>
<li>chore(deps): update astral-sh/setup-uv action to v8.3.2 by <a
href="https://github.com/renovate"><code>@​renovate</code></a>[bot] in
<a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1149">syrupy-project/syrupy#1149</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/syrupy-project/syrupy/compare/v5.5.2...v5.5.3">https://github.com/syrupy-project/syrupy/compare/v5.5.2...v5.5.3</a></p>
<h2><a
href="https://github.com/syrupy-project/syrupy/releases/tag/v5.5.2">v5.5.2</a>
(2026-07-08)</h2>
<h2>What's Changed</h2>
<ul>
<li>fix: Fix detecting <code>pytest-xdist</code> when loaded via
<code>PYTEST_PLUGINS</code> by <a
href="https://github.com/mgorny"><code>@​mgorny</code></a> in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1142">syrupy-project/syrupy#1142</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/mgorny"><code>@​mgorny</code></a> made
their first contribution in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1142">syrupy-project/syrupy#1142</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/syrupy-project/syrupy/compare/v5.5.1...v5.5.2">https://github.com/syrupy-project/syrupy/compare/v5.5.1...v5.5.2</a></p>
<h2><a
href="https://github.com/syrupy-project/syrupy/releases/tag/v5.5.1">v5.5.1</a>
(2026-07-06)</h2>
<h2>What's Changed</h2>
<ul>
<li>fix: Defer registering <code>pytest-xdist</code> hook
<code>pytest_testnodedown</code> to avoid &quot;unknown hook&quot; error
by <a
href="https://github.com/edgarrmondragon"><code>@​edgarrmondragon</code></a>
in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1140">syrupy-project/syrupy#1140</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a
href="https://github.com/edgarrmondragon"><code>@​edgarrmondragon</code></a>
made their first contribution in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1140">syrupy-project/syrupy#1140</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/syrupy-project/syrupy/compare/v5.5.0...v5.5.1">https://github.com/syrupy-project/syrupy/compare/v5.5.0...v5.5.1</a></p>
<h2><a
href="https://github.com/syrupy-project/syrupy/releases/tag/v5.5.0">v5.5.0</a>
(2026-07-06)</h2>
<h2>What's Changed</h2>
<ul>
<li>feat: detect unused snapshots under pytest-xdist by <a
href="https://github.com/frenck"><code>@​frenck</code></a> in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1132">syrupy-project/syrupy#1132</a></li>
</ul>
<blockquote>
<p><strong>NOTE</strong>: Test suites using pytest-xdist that previously
passed due to incomplete snapshot support may now fail if unused
snapshots are detected. You can use <code>--snapshot-warn-unused</code>
to downgrade unused snapshot detection from an error to a warning though
it's not recommended.</p>
</blockquote>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/syrupy-project/syrupy/compare/v5.4.0...v5.5.0">https://github.com/syrupy-project/syrupy/compare/v5.4.0...v5.5.0</a></p>
<h2><a
href="https://github.com/syrupy-project/syrupy/releases/tag/v5.4.0">v5.4.0</a>
(2026-07-01)</h2>
<h2>What's Changed</h2>
<ul>
<li>feat: add --snapshot-no-cleanup to keep unused snapshots on update
by <a href="https://github.com/frenck"><code>@​frenck</code></a> in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1126">syrupy-project/syrupy#1126</a></li>
<li>fix: honor boolean operators in -k snapshot selection by <a
href="https://github.com/frenck"><code>@​frenck</code></a> in <a
href="https://redirect.github.com/syrupy-project/syrupy/pull/1127">syrupy-project/syrupy#1127</a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/syrupy-project/syrupy/commit/3cd347306cf44db076d2e4f50f7dfd325d9b5a92"><code>3cd3473</code></a>
chore(release): 5.5.3 [skip ci]</li>
<li><a
href="https://github.com/syrupy-project/syrupy/commit/fed7e9f69f4dd14b39360e626236c868147588d5"><code>fed7e9f</code></a>
chore(deps): update astral-sh/setup-uv action to v8.3.2 (<a
href="https://redirect.github.com/syrupy-project/syrupy/issues/1149">#1149</a>)</li>
<li><a
href="https://github.com/syrupy-project/syrupy/commit/443fc11bf67ce588753cd4518ef056463cfe651b"><code>443fc11</code></a>
chore: closes <a
href="https://redirect.github.com/syrupy-project/syrupy/issues/1144">#1144</a>
(<a
href="https://redirect.github.com/syrupy-project/syrupy/issues/1146">#1146</a>)</li>
<li><a
href="https://github.com/syrupy-project/syrupy/commit/56bf157ce4135bde78ecc49cfa9532ffa41659e8"><code>56bf157</code></a>
chore(deps): update dependency hypothesis to v6.156.3 (<a
href="https://redirect.github.com/syrupy-project/syrupy/issues/1150">#1150</a>)</li>
<li><a
href="https://github.com/syrupy-project/syrupy/commit/f9c725a5653677bfcafb53645c9a078f3aa79d87"><code>f9c725a</code></a>
chore(deps): update dependency mypy to v2.2.0 (<a
href="https://redirect.github.com/syrupy-project/syrupy/issues/1148">#1148</a>)</li>
<li><a
href="https://github.com/syrupy-project/syrupy/commit/3af2ccf2feeadb3a0d4e3f418d22ad3395725c80"><code>3af2ccf</code></a>
chore(deps): update dependency hypothesis to v6.156.2 (<a
href="https://redirect.github.com/syrupy-project/syrupy/issues/1147">#1147</a>)</li>
<li><a
href="https://github.com/syrupy-project/syrupy/commit/feaa22ca4c211dfcdd8d0d048112531fd6cb344c"><code>feaa22c</code></a>
chore(deps): update astral-sh/setup-uv action to v8.3.1 (<a
href="https://redirect.github.com/syrupy-project/syrupy/issues/1145">#1145</a>)</li>
<li><a
href="https://github.com/syrupy-project/syrupy/commit/5c59701e411922a464497398f5df25d76f2f9dcd"><code>5c59701</code></a>
chore(deps): update astral-sh/setup-uv action to v8.3.0 (<a
href="https://redirect.github.com/syrupy-project/syrupy/issues/1143">#1143</a>)</li>
<li><a
href="https://github.com/syrupy-project/syrupy/commit/1cbf7167ff114e3012b1c139661777c1a0b692ee"><code>1cbf716</code></a>
chore(release): 5.5.2 [skip ci]</li>
<li><a
href="https://github.com/syrupy-project/syrupy/commit/4f83490d2ebf4ae22aeba6d9946979640151aa34"><code>4f83490</code></a>
fix: Fix detecting <code>pytest-xdist</code> when loaded via
<code>PYTEST_PLUGINS</code> (<a
href="https://redirect.github.com/syrupy-project/syrupy/issues/1142">#1142</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/syrupy-project/syrupy/compare/v5.3.4...v5.5.3">compare
view</a></li>
</ul>
</details>
<br />

Updates `redis` from 8.0.1 to 8.1.0
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/redis/redis-py/releases">redis's
releases</a>.</em></p>
<blockquote>
<h2>8.1.0</h2>
<h1>Changes</h1>
<h2>✨ Highlights</h2>
<h3>Async maintenance notifications</h3>
<p>redis-py now supports server-pushed <strong>maintenance
notifications</strong> in the asyncio stack for both
standalone and cluster clients, bringing the async client to parity with
the sync implementation.
When a Redis deployment signals maintenance events (such as node
migration or failover windows), the
async client reacts through the maintenance-notifications handler
(<code>redis/maint_notifications.py</code> and
its async integration under <code>redis/asyncio/</code>), allowing
applications to adapt connection handling
during maintenance without downtime. (<a
href="https://redirect.github.com/redis/redis-py/issues/4177">#4177</a>)</p>
<h3>Expanded command coverage</h3>
<p>This release adds a batch of new command surfaces across core data
types and modules:</p>
<ul>
<li><strong>Lists</strong> — <code>LMOVEM</code> / <code>BLMOVEM</code>
for moving multiple elements between lists (<a
href="https://redirect.github.com/redis/redis-py/issues/4174">#4174</a>).</li>
<li><strong>Sets</strong> — <code>SDIFFCARD</code> and
<code>SUNIONCARD</code> cardinality commands (<a
href="https://redirect.github.com/redis/redis-py/issues/4171">#4171</a>).</li>
<li><strong>Streams</strong> — <code>MAXCOUNT</code> /
<code>MAXSIZE</code> options for <code>XREAD</code> and
<code>XREADGROUP</code> (<a
href="https://redirect.github.com/redis/redis-py/issues/4173">#4173</a>).</li>
<li><strong>Time Series</strong> — <code>TS.READ</code> (<a
href="https://redirect.github.com/redis/redis-py/issues/4170">#4170</a>),
<code>TS.QUERYLABELS</code> (<a
href="https://redirect.github.com/redis/redis-py/issues/4197">#4197</a>),
<code>TS.NRANGE</code> / <code>TS.NREVRANGE</code> (<a
href="https://redirect.github.com/redis/redis-py/issues/4163">#4163</a>),
and an <code>exclude_empty</code> (<code>EXCLUDEEMPTY</code>) option for
<code>TS.MRANGE</code> / <code>TS.MREVRANGE</code> (<a
href="https://redirect.github.com/redis/redis-py/issues/4188">#4188</a>).</li>
<li><strong>Search</strong> — <code>FT.ALIASLIST</code> (<a
href="https://redirect.github.com/redis/redis-py/issues/4198">#4198</a>)
and a <code>COLLECT</code> reducer for aggregations (<a
href="https://redirect.github.com/redis/redis-py/issues/4179">#4179</a>).</li>
<li><strong>Sentinel</strong> — replica sentinel aliases (<a
href="https://redirect.github.com/redis/redis-py/issues/4127">#4127</a>).</li>
</ul>
<h2>🚀 New Features</h2>
<ul>
<li>Add replica sentinel aliases (<a
href="https://redirect.github.com/redis/redis-py/issues/4127">#4127</a>)</li>
<li>Add TS.NRANGE and TS.NREVRANGE support to the timeseries command
surface (<a
href="https://redirect.github.com/redis/redis-py/issues/4163">#4163</a>)</li>
<li>feat: add TS.READ command support to the timeseries module (<a
href="https://redirect.github.com/redis/redis-py/issues/4170">#4170</a>)</li>
<li>feat: add SDIFFCARD and SUNIONCARD command support (<a
href="https://redirect.github.com/redis/redis-py/issues/4171">#4171</a>)</li>
<li>feat: add MAXCOUNT/MAXSIZE support to XREAD and XREADGROUP (<a
href="https://redirect.github.com/redis/redis-py/issues/4173">#4173</a>)</li>
<li>feat: add LMOVEM and BLMOVEM commands for moving multiple list
elements (<a
href="https://redirect.github.com/redis/redis-py/issues/4174">#4174</a>)</li>
<li>feat: add async maintenance-notifications support for standalone and
cluster clients (<a
href="https://redirect.github.com/redis/redis-py/issues/4177">#4177</a>)</li>
<li>feat: add COLLECT reducer support to search aggregations (<a
href="https://redirect.github.com/redis/redis-py/issues/4179">#4179</a>)</li>
<li>feat: add exclude_empty (EXCLUDEEMPTY) option to TS.MRANGE and
TS.MREVRANGE (<a
href="https://redirect.github.com/redis/redis-py/issues/4188">#4188</a>)</li>
<li>feat: add TS.QUERYLABELS support to the timeseries command surface
(<a
href="https://redirect.github.com/redis/redis-py/issues/4197">#4197</a>)</li>
<li>feat: add FT.ALIASLIST support (<a
href="https://redirect.github.com/redis/redis-py/issues/4198">#4198</a>)</li>
</ul>
<h2>⚠️ Experimental</h2>
<ul>
<li>feat: add client-side HIMPORT fieldset support for standalone and
cluster clients (<a
href="https://redirect.github.com/redis/redis-py/issues/4205">#4205</a>)</li>
</ul>
<p>The feature considered unstable and <strong>public API might be
changed in the future minor version</strong></p>
<h2>🐛 Bug Fixes</h2>
<ul>
<li>fix: detect closed pooled connection without consuming pending push
data (RESP3 + hiredis) (<a
href="https://redirect.github.com/redis/redis-py/issues/4156">#4156</a>)</li>
<li>Fix Sentinel pool capacity loss after failover (<a
href="https://redirect.github.com/redis/redis-py/issues/4193">#4193</a>)</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/redis/redis-py/commit/e013126df18e476fbb8b8215f040f39bd3242683"><code>e013126</code></a>
Testing with 8.10 GA (<a
href="https://redirect.github.com/redis/redis-py/issues/4227">#4227</a>)</li>
<li><a
href="https://github.com/redis/redis-py/commit/059d1e97d88dd7ed516628e0a9765ab8e0e299f1"><code>059d1e9</code></a>
Fixed TS.NRANGE commands to correctly apply aggregators (<a
href="https://redirect.github.com/redis/redis-py/issues/4225">#4225</a>)</li>
<li><a
href="https://github.com/redis/redis-py/commit/d486a0a982dcdf316006474dc286ca65cbec5a9f"><code>d486a0a</code></a>
Fix FIELDNAME alias dropping first character of un-prefixed fields (<a
href="https://redirect.github.com/redis/redis-py/issues/4224">#4224</a>)</li>
<li><a
href="https://github.com/redis/redis-py/commit/fb931042420baaa5fbb9021955e444f7afa66dc2"><code>fb93104</code></a>
feat: add client-side HIMPORT fieldset support for standalone and
cluster cli...</li>
<li><a
href="https://github.com/redis/redis-py/commit/9197609f48eb9713411a50534ca48210486a4bf9"><code>9197609</code></a>
Fix lat/lon swap in search querystring geo() helper (<a
href="https://redirect.github.com/redis/redis-py/issues/4223">#4223</a>)</li>
<li><a
href="https://github.com/redis/redis-py/commit/14714a0812d3ff03ad34c89ce6f79e287a04e9fb"><code>14714a0</code></a>
fix: Fixed double decoding issue with unquote() (<a
href="https://redirect.github.com/redis/redis-py/issues/4222">#4222</a>)</li>
<li><a
href="https://github.com/redis/redis-py/commit/227280a939718d09ff9d7c41f9785ffdc21bdc2a"><code>227280a</code></a>
Update lib version to 8.1.0</li>
<li><a
href="https://github.com/redis/redis-py/commit/88d16d0db10c852d1d292628b2c832f1ed117056"><code>88d16d0</code></a>
Decode ACL LOG string values on the default RESP3 legacy callback (<a
href="https://redirect.github.com/redis/redis-py/issues/4201">#4201</a>)</li>
<li><a
href="https://github.com/redis/redis-py/commit/599fd75ca7d0745928280ff3a64ccd224dbf2b76"><code>599fd75</code></a>
feat: add FT.ALIASLIST support (<a
href="https://redirect.github.com/redis/redis-py/issues/4198">#4198</a>)</li>
<li><a
href="https://github.com/redis/redis-py/commit/71e275e6eae94d202b49bccce10ef0d2a59050e7"><code>71e275e</code></a>
test: add VectorField RERANK serialization tests for sync and async
search (#...</li>
<li>Additional commits viewable in <a
href="https://github.com/redis/redis-py/compare/v8.0.1...v8.1.0">compare
view</a></li>
</ul>
</details>
<br />

Updates `ruff` from 0.15.20 to 0.16.1
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/astral-sh/ruff/releases">ruff's
releases</a>.</em></p>
<blockquote>
<h2>0.16.1</h2>
<h2>Release Notes</h2>
<p>Released on 2026-07-30.</p>
<h3>Preview features</h3>
<ul>
<li>Add an option to opt out of human-readable names (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27160">#27160</a>)</li>
<li>[<code>flake8-pytest-style</code>] Make fixes safe by default and
unsafe only when comments are present (<code>PT018</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27201">#27201</a>)</li>
<li>[<code>pyupgrade</code>] Skip fix when a defaulted
<code>TypeVar</code> precedes a non-defaulted one (<code>UP040</code>,
<code>UP046</code>, <code>UP047</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27133">#27133</a>)</li>
<li>[<code>ruff</code>] Fix false positive with unpacked arguments
(<code>RUF065</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/26959">#26959</a>)</li>
</ul>
<h3>Bug fixes</h3>
<ul>
<li>Bump <code>gen-lsp-types</code> to gracefully handle unknown
enumeration values in LSP messages (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27230">#27230</a>)</li>
<li>[<code>flake8-bugbear</code>] Mark <code>range</code> as immutable
(<code>B008</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27247">#27247</a>)</li>
<li>[<code>flake8-comprehensions</code>] NFKC-normalize keyword names in
<code>C408</code> fix (<a
href="https://redirect.github.com/astral-sh/ruff/pull/26813">#26813</a>)</li>
<li>[<code>flake8-return</code>] Fix false positive when variable is
read in <code>finally</code> clause (<code>RET504</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/25441">#25441</a>)</li>
<li>[<code>pydocstyle</code>] Skip section detection inside RST
directive bodies (<code>D214</code>, <code>D405</code>,
<code>D413</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/23635">#23635</a>)</li>
<li>[<code>refurb</code>] Parenthesize <code>yield</code> arguments in
the <code>FURB192</code> fix (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27192">#27192</a>)</li>
</ul>
<h3>Rule changes</h3>
<ul>
<li>[<code>flake8-pytest-style</code>] Mark <code>PT022</code> fixes as
unsafe (<a
href="https://redirect.github.com/astral-sh/ruff/pull/26440">#26440</a>)</li>
<li>[<code>refurb</code>] Mark fixes that remove unknown separators as
unsafe (<code>FURB105</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27200">#27200</a>)</li>
</ul>
<h3>Server</h3>
<ul>
<li>Fix indexing of excluded nested Ruff workspaces (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27303">#27303</a>)</li>
<li>Lint TOML files in the LSP (<a
href="https://redirect.github.com/astral-sh/ruff/pull/26862">#26862</a>)</li>
</ul>
<h3>Documentation</h3>
<ul>
<li>Cover <code>pycon</code> Markdown formatting (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27153">#27153</a>)</li>
<li>[<code>flake8-bandit</code>] Document <code>TYPE_CHECKING</code>
exception (<code>S101</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27004">#27004</a>)</li>
<li>[<code>flake8-import-conventions</code>] Document that
<code>extend-aliases</code> can override default aliases (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27191">#27191</a>)</li>
<li>[<code>pylint</code>] Add missing fix safety gotchas for
<code>non-augmented-assignment</code> (<code>PLR6104</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27250">#27250</a>)</li>
</ul>
<h3>Other changes</h3>
<ul>
<li>Reduce syntax error noise by swallowing dedents like indents (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27170">#27170</a>)</li>
<li>Vendor latest annotate-snippets (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27033">#27033</a>)</li>
</ul>
<h3>Contributors</h3>
<ul>
<li><a href="https://github.com/bxff"><code>@​bxff</code></a></li>
<li><a
href="https://github.com/anishgirianish"><code>@​anishgirianish</code></a></li>
<li><a href="https://github.com/Avasam"><code>@​Avasam</code></a></li>
<li><a href="https://github.com/epage"><code>@​epage</code></a></li>
<li><a href="https://github.com/LHMQ878"><code>@​LHMQ878</code></a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md">ruff's
changelog</a>.</em></p>
<blockquote>
<h2>0.16.1</h2>
<p>Released on 2026-07-30.</p>
<h3>Preview features</h3>
<ul>
<li>Add an option to opt out of human-readable names (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27160">#27160</a>)</li>
<li>[<code>flake8-pytest-style</code>] Make fixes safe by default and
unsafe only when comments are present (<code>PT018</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27201">#27201</a>)</li>
<li>[<code>pyupgrade</code>] Skip fix when a defaulted
<code>TypeVar</code> precedes a non-defaulted one (<code>UP040</code>,
<code>UP046</code>, <code>UP047</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27133">#27133</a>)</li>
<li>[<code>ruff</code>] Fix false positive with unpacked arguments
(<code>RUF065</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/26959">#26959</a>)</li>
</ul>
<h3>Bug fixes</h3>
<ul>
<li>Bump <code>gen-lsp-types</code> to gracefully handle unknown
enumeration values in LSP messages (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27230">#27230</a>)</li>
<li>[<code>flake8-bugbear</code>] Mark <code>range</code> as immutable
(<code>B008</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27247">#27247</a>)</li>
<li>[<code>flake8-comprehensions</code>] NFKC-normalize keyword names in
<code>C408</code> fix (<a
href="https://redirect.github.com/astral-sh/ruff/pull/26813">#26813</a>)</li>
<li>[<code>flake8-return</code>] Fix false positive when variable is
read in <code>finally</code> clause (<code>RET504</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/25441">#25441</a>)</li>
<li>[<code>pydocstyle</code>] Skip section detection inside RST
directive bodies (<code>D214</code>, <code>D405</code>,
<code>D413</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/23635">#23635</a>)</li>
<li>[<code>refurb</code>] Parenthesize <code>yield</code> arguments in
the <code>FURB192</code> fix (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27192">#27192</a>)</li>
</ul>
<h3>Rule changes</h3>
<ul>
<li>[<code>flake8-pytest-style</code>] Mark <code>PT022</code> fixes as
unsafe (<a
href="https://redirect.github.com/astral-sh/ruff/pull/26440">#26440</a>)</li>
<li>[<code>refurb</code>] Mark fixes that remove unknown separators as
unsafe (<code>FURB105</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27200">#27200</a>)</li>
</ul>
<h3>Server</h3>
<ul>
<li>Fix indexing of excluded nested Ruff workspaces (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27303">#27303</a>)</li>
<li>Lint TOML files in the LSP (<a
href="https://redirect.github.com/astral-sh/ruff/pull/26862">#26862</a>)</li>
</ul>
<h3>Documentation</h3>
<ul>
<li>Cover <code>pycon</code> Markdown formatting (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27153">#27153</a>)</li>
<li>[<code>flake8-bandit</code>] Document <code>TYPE_CHECKING</code>
exception (<code>S101</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27004">#27004</a>)</li>
<li>[<code>flake8-import-conventions</code>] Document that
<code>extend-aliases</code> can override default aliases (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27191">#27191</a>)</li>
<li>[<code>pylint</code>] Add missing fix safety gotchas for
<code>non-augmented-assignment</code> (<code>PLR6104</code>) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27250">#27250</a>)</li>
</ul>
<h3>Other changes</h3>
<ul>
<li>Reduce syntax error noise by swallowing dedents like indents (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27170">#27170</a>)</li>
<li>Vendor latest annotate-snippets (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27033">#27033</a>)</li>
</ul>
<h3>Contributors</h3>
<ul>
<li><a href="https://github.com/bxff"><code>@​bxff</code></a></li>
<li><a
href="https://github.com/anishgirianish"><code>@​anishgirianish</code></a></li>
<li><a href="https://github.com/Avasam"><code>@​Avasam</code></a></li>
<li><a href="https://github.com/epage"><code>@​epage</code></a></li>
<li><a href="https://github.com/LHMQ878"><code>@​LHMQ878</code></a></li>
<li><a
href="https://github.com/MichaReiser"><code>@​MichaReiser</code></a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/astral-sh/ruff/commit/80790b348b5188e7fc253665540f442c6ec7dd05"><code>80790b3</code></a>
Bump 0.16.1 (<a
href="https://redirect.github.com/astral-sh/ruff/issues/27330">#27330</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/63830f3e97b56ca3be0dd8f1092f76c4acc63213"><code>63830f3</code></a>
[ty] Borrow from constraint set storage less often (<a
href="https://redirect.github.com/astral-sh/ruff/issues/27328">#27328</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/f40dca98a7f1b6fff0cee5ecf1e6364d5a8bdc15"><code>f40dca9</code></a>
[ty] Preserve forwarded expanded-variadic diagnostic sources (<a
href="https://redirect.github.com/astral-sh/ruff/issues/27266">#27266</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/0d804975a2645d6e4a795cf501fd764b88aa47e3"><code>0d80497</code></a>
Lint TOML files in the LSP (<a
href="https://redirect.github.com/astral-sh/ruff/issues/26862">#26862</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/d91586bd5b30f77f6614d57b73fc7dbea9051a0e"><code>d91586b</code></a>
Update prek dependencies (<a
href="https://redirect.github.com/astral-sh/ruff/issues/27293">#27293</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/7da4b8b8d78fd6df2b3e06d8466d9cd49822900d"><code>7da4b8b</code></a>
[ty] Respect bounds and constraints in generic materializations (<a
href="https://redirect.github.com/astral-sh/ruff/issues/27228">#27228</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/b20daf741241a6829ff8963a203f7847561deb62"><code>b20daf7</code></a>
[ty] refactor: add helper function to send partial results (<a
href="https://redirect.github.com/astral-sh/ruff/issues/27249">#27249</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/4d4c8fa1c75b00561ea24eefefb13eb5ff80e01f"><code>4d4c8fa</code></a>
[ty] Emit diagnostic when specializing a non-generic class (<a
href="https://redirect.github.com/astral-sh/ruff/issues/26883">#26883</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/7c3e2db97deb5c5edd6e4303403ef6caf2bde8be"><code>7c3e2db</code></a>
[ty] Fix enum class container assignability (<a
href="https://redirect.github.com/astral-sh/ruff/issues/27318">#27318</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/d5ef97fcd03e108f7510f84b8ed85bb4051311fe"><code>d5ef97f</code></a>
[<code>flake8-return</code>] Fix false positive when variable is read in
<code>finally</code> claus...</li>
<li>Additional commits viewable in <a
href="https://github.com/astral-sh/ruff/compare/0.15.20...0.16.1">compare
view</a></li>
</ul>
</details>
<br />

Updates `ty` from 0.0.55 to 0.0.66
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/astral-sh/ty/releases">ty's
releases</a>.</em></p>
<blockquote>
<h2>0.0.66</h2>
<h2>Release Notes</h2>
<p>Released on 2026-08-03.</p>
<h3>LSP server</h3>
<ul>
<li>Index <code>with</code>-statement targets as symbols (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27256">#27256</a>)</li>
<li>Trigger signature help after completing callable with parentheses
(<a
href="https://redirect.github.com/astral-sh/ruff/pull/27084">#27084</a>)</li>
</ul>
<h3>Library support</h3>
<ul>
<li>Pydantic: Recognize models installed on extra search paths (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27429">#27429</a>)</li>
</ul>
<h3>Diagnostics</h3>
<ul>
<li>Detect <code>__aenter__</code> and <code>__aexit__</code> that do
not return awaitables (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27414">#27414</a>)</li>
<li>Diagnose dataclass fields after inherited defaults (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27327">#27327</a>)</li>
<li>Emit diagnostic when specializing a non-generic class (<a
href="https://redirect.github.com/astral-sh/ruff/pull/26883">#26883</a>)</li>
<li>Improve error context for incompatible callable signatures (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27422">#27422</a>)</li>
<li>Preserve forwarded expanded-variadic diagnostic sources (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27266">#27266</a>)</li>
</ul>
<h3>Core type checking</h3>
<ul>
<li>Avoid over-materializing user-defined <code>TypeIs</code> return
types (<a
href="https://redirect.github.com/astral-sh/ruff/pull/26864">#26864</a>)</li>
<li>Fix enum class container assignability (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27318">#27318</a>)</li>
<li>Hide stub-only helpers from implicit builtin lookup (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27423">#27423</a>)</li>
<li>Move <code>Unknown</code> out of the experimental
<code>ty_extensions</code> API (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27430">#27430</a>)</li>
<li>Preserve <code>TypeVarTuple</code> context during
<code>Generic</code> recovery (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27381">#27381</a>)</li>
<li>Preserve exact numeric types in covariant collections (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27311">#27311</a>)</li>
<li>Reject <code>ClassVar</code> and <code>Final</code> qualifiers in
<code>NamedTuple</code> fields (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27380">#27380</a>)</li>
<li>Reject out-of-scope <code>ParamSpec</code> components (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27378">#27378</a>)</li>
<li>Reject specializing non-generic subclasses (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27377">#27377</a>)</li>
<li>Respect bounds and constraints in generic materializations (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27228">#27228</a>)</li>
<li>Sync vendored typeshed stubs (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27401">#27401</a>).
<a
href="https://github.com/python/typeshed/compare/b00c387c669cb50d5d388d77b74c2e832e147fe8...1b116673774d062a4af7b0a0b3d05533a6be55d0">Typeshed
diff</a></li>
</ul>
<h3>Contributors</h3>
<ul>
<li><a
href="https://github.com/dhruvmanila"><code>@​dhruvmanila</code></a></li>
<li><a href="https://github.com/carljm"><code>@​carljm</code></a></li>
<li><a
href="https://github.com/Punisheroot"><code>@​Punisheroot</code></a></li>
<li><a
href="https://github.com/AlexWaygood"><code>@​AlexWaygood</code></a></li>
<li><a
href="https://github.com/cheparity"><code>@​cheparity</code></a></li>
<li><a
href="https://github.com/BitWeaverDev"><code>@​BitWeaverDev</code></a></li>
<li><a
href="https://github.com/charliermarsh"><code>@​charliermarsh</code></a></li>
<li><a href="https://github.com/ribru17"><code>@​ribru17</code></a></li>
<li><a href="https://github.com/sharkdp"><code>@​sharkdp</code></a></li>
</ul>
<h2>Install ty 0.0.66</h2>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/astral-sh/ty/blob/main/CHANGELOG.md">ty's
changelog</a>.</em></p>
<blockquote>
<h2>0.0.66</h2>
<p>Released on 2026-08-03.</p>
<h3>LSP server</h3>
<ul>
<li>Index <code>with</code>-statement targets as symbols (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27256">#27256</a>)</li>
<li>Trigger signature help after completing callable with parentheses
(<a
href="https://redirect.github.com/astral-sh/ruff/pull/27084">#27084</a>)</li>
</ul>
<h3>Library support</h3>
<ul>
<li>Pydantic: Recognize models installed on extra search paths (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27429">#27429</a>)</li>
</ul>
<h3>Diagnostics</h3>
<ul>
<li>Detect <code>__aenter__</code> and <code>__aexit__</code> that do
not return awaitables (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27414">#27414</a>)</li>
<li>Diagnose dataclass fields after inherited defaults (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27327">#27327</a>)</li>
<li>Emit diagnostic when specializing a non-generic class (<a
href="https://redirect.github.com/astral-sh/ruff/pull/26883">#26883</a>)</li>
<li>Improve error context for incompatible callable signatures (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27422">#27422</a>)</li>
<li>Preserve forwarded expanded-variadic diagnostic sources (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27266">#27266</a>)</li>
</ul>
<h3>Core type checking</h3>
<ul>
<li>Avoid over-materializing user-defined <code>TypeIs</code> return
types (<a
href="https://redirect.github.com/astral-sh/ruff/pull/26864">#26864</a>)</li>
<li>Fix enum class container assignability (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27318">#27318</a>)</li>
<li>Hide stub-only helpers from implicit builtin lookup (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27423">#27423</a>)</li>
<li>Move <code>Unknown</code> out of the experimental
<code>ty_extensions</code> API (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27430">#27430</a>)</li>
<li>Preserve <code>TypeVarTuple</code> context during
<code>Generic</code> recovery (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27381">#27381</a>)</li>
<li>Preserve exact numeric types in covariant collections (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27311">#27311</a>)</li>
<li>Reject <code>ClassVar</code> and <code>Final</code> qualifiers in
<code>NamedTuple</code> fields (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27380">#27380</a>)</li>
<li>Reject out-of-scope <code>ParamSpec</code> components (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27378">#27378</a>)</li>
<li>Reject specializing non-generic subclasses (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27377">#27377</a>)</li>
<li>Respect bounds and constraints in generic materializations (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27228">#27228</a>)</li>
<li>Sync vendored typeshed stubs (<a
href="https://redirect.github.com/astral-sh/ruff/pull/27401">#27401</a>).
<a
href="https://github.com/python/typeshed/compare/b00c387c669cb50d5d388d77b74c2e832e147fe8...1b116673774d062a4af7b0a0b3d05533a6be55d0">Typeshed
diff</a></li>
</ul>
<h3>Contributors</h3>
<ul>
<li><a
href="https://github.com/dhruvmanila"><code>@​dhruvmanila</code></a></li>
<li><a href="https://github.com/carljm"><code>@​carljm</code></a></li>
<li><a
href="https://github.com/Punisheroot"><code>@​Punisheroot</code></a></li>
<li><a
href="https://github.com/AlexWaygood"><code>@​AlexWaygood</code></a></li>
<li><a
href="https://github.com/cheparity"><code>@​cheparity</code></a></li>
<li><a
href="https://github.com/BitWeaverDev"><code>@​BitWeaverDev</code></a></li>
<li><a
href="https://github.com/charliermarsh"><code>@​charliermarsh</code></a></li>
<li><a href="https://github.com/ribru17"><code>@​ribru17</code></a></li>
<li><a href="https://github.com/sharkdp"><code>@​sharkdp</code></a></li>
</ul>
<h2>0.0.65</h2>
<p>Released on 2026-07-29.</p>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/astral-sh/ty/commit/3e28e58af75c3b16403c05ab401ae7347b65c5e2"><code>3e28e58</code></a>
Bump version to 0.0.66 (<a
href="https://redirect.github.com/astral-sh/ty/issues/4166">#4166</a>)</li>
<li><a
href="https://github.com/astral-sh/ty/commit/87de836dfef2d3e1990440752e30e24cfb572f4e"><code>87de836</code></a>
Bump version to 0.0.65 (<a
href="https://redirect.github.com/astral-sh/ty/issues/4113">#4113</a>)</li>
<li><a
href="https://github.com/astral-sh/ty/commit/d784bad352f4640e7f788eac4dfb0353ca199902"><code>d784bad</code></a>
README: Add link to Stable milestone (<a
href="https://redirect.github.com/astral-sh/ty/issues/4112">#4112</a>)</li>
<li><a
href="https://github.com/astral-sh/ty/commit/b4c1978dbdf18501ed03139e33ee8afaef251ec3"><code>b4c1978</code></a>
Update actions/setup-python action to v7 (<a
href="https://redirect.github.com/astral-sh/ty/issues/4110">#4110</a>)</li>
<li><a
href="https://github.com/astral-sh/ty/commit/8d216a39dad99c4443396a08a77da00502cd7e58"><code>8d216a3</code></a>
Update actions/checkout action to v7.0.1 (<a
href="https://redirect.github.com/astral-sh/ty/issues/4107">#4107</a>)</li>
<li><a
href="https://github.com/astral-sh/ty/commit/06f44e9039cb2764346c4bceaff4021ac143de9e"><code>06f44e9</code></a>
Update dependency prek to v0.4.10 (<a
href="https://redirect.github.com/astral-sh/ty/issues/4108">#4108</a>)</li>
<li><a
href="https://github.com/astral-sh/ty/commit/b3665fde4804424576a30078bc0b7c101c5e2242"><code>b3665fd</code></a>
Update prek dependencies (<a
href="https://redirect.github.com/astral-sh/ty/issues/4109">#4109</a>)</li>
<li><a
href="https://github.com/astral-sh/ty/commit/5e64a131b436a4e1f40e6317c526f4fc73fab38b"><code>5e64a13</code></a>
Bump version to 0.0.64 (<a
href="https://redirect.github.com/astral-sh/ty/issues/4097">#4097</a>)</li>
<li><a
href="https://github.com/astral-sh/ty/commit/46f4915e67aad965b1b4e7478a75378e8e52ff6d"><code>46f4915</code></a>
Bump version to 0.0.63 (<a
href="https://redirect.github.com/astral-sh/ty/issues/4071">#4071</a>)</li>
<li><a
href="https://github.com/astral-sh/ty/commit/df75992e7fd0cc73cb0f66e864df3f6e4fc4e1a6"><code>df75992</code></a>
Bump version to 0.0.62 (<a
href="https://redirect.github.com/astral-sh/ty/issues/4057">#4057</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/astral-sh/ty/compare/0.0.55...0.0.66">compare
view</a></li>
</ul>
</details>
<br />

Updates `anyio` from 4.14.1 to 4.14.2
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/agronholm/anyio/releases">anyio's
releases</a>.</em></p>
<blockquote>
<h2>4.14.2</h2>
<ul>
<li>Changed <code>ByteReceiveStream.receive()</code> implementations to
raise a <code>ValueError</code> when <code>max_bytes</code> is not a
positive integer (<a
href="https://redirect.github.com/agronholm/anyio/pull/1191">#1191</a>)</li>
<li>Fixed <code>CapacityLimiter.total_tokens</code> rejecting
<code>float(&quot;inf&quot;)</code> when the limiter was instantiated
outside of an event loop. The adapter setter checked for infinity by
identity (<code>value is math.inf</code>), so only the exact
<code>math.inf</code> singleton was accepted, while every backend setter
(using <code>math.isinf()</code>) accepts any positive infinity (<a
href="https://redirect.github.com/agronholm/anyio/pull/1189">#1189</a>;
PR by <a
href="https://github.com/greymoth-jp"><code>@​greymoth-jp</code></a>).</li>
<li>Fixed <code>to_process.run_sync()</code> deadlocking when the worker
function writes enough data to <code>sys.stderr</code> to fill the
(undrained) pipe buffer. The worker process now redirects
<code>sys.stderr</code> to <code>os.devnull</code> as well, matching the
documented behavior</li>
<li>Fixed <code>TLSStream.wrap()</code> matching an internationalized
(unicode) host name against the peer certificate using IDNA 2003 (via
the standard library) instead of IDNA 2008, which could cause the host
name to be matched against the wrong certificate (<a
href="https://redirect.github.com/agronholm/anyio/pull/1208">#1208</a>)</li>
<li>Fixed <code>anyio.open_process()</code> (and
<code>run_process()</code>) ignoring the <code>extra_groups</code>
argument, as it mistakenly passed the value of the <code>group</code>
argument instead (<a
href="https://redirect.github.com/agronholm/anyio/pull/1209">#1209</a>)</li>
<li>Fixed <code>CapacityLimiter.acquire_nowait()</code> and
<code>CapacityLimiter.acquire_nowait_on_behalf_of()</code> raising
<code>trio.WouldBlock</code> instead of <code>anyio.WouldBlock</code> on
the <code>trio</code> backend when there are no tokens available (<a
href="https://redirect.github.com/agronholm/anyio/pull/1218">#1218</a>)</li>
<li>Fixed <code>CapacityLimiter</code> on the asyncio backend
over-granting tokens (<code>borrowed_tokens</code> exceeding
<code>total_tokens</code> and <code>available_tokens</code> going
negative) when a non-blocking acquire was made in the window between a
token being released and the notified waiter resuming. The freed token
is now reserved for the woken waiter right away, so the non-blocking
acquire correctly raises <code>WouldBlock</code> (<a
href="https://redirect.github.com/agronholm/anyio/issues/1170">#1170</a>;
PR by <a
href="https://github.com/gaoflow"><code>@​gaoflow</code></a>)</li>
<li>Fixed unnecessary CPU spin when delivering cancellation from
<code>CancelScope</code> on asyncio under certain conditions, including
improper cancel scope nesting (<a
href="https://redirect.github.com/agronholm/anyio/issues/1111">#1111</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/agronholm/anyio/commit/c384f99687c64c59ed8a11c3a0f11a2d57daff71"><code>c384f99</code></a>
Bumped up the version</li>
<li><a
href="https://github.com/agronholm/anyio/commit/dbba29d1ade7936f18fb71ba24aa92978673482a"><code>dbba29d</code></a>
Fixed 100% CPU spin on cancel scope misuse (<a
href="https://redirect.github.com/agronholm/anyio/issues/1217">#1217</a>)</li>
<li><a
href="https://github.com/agronholm/anyio/commit/6bbc6c33caabc13af5bc4256f745027cf8d5d7b8"><code>6bbc6c3</code></a>
Fix CapacityLimiter over-granting tokens on asyncio (<a
href="https://redirect.github.com/agronholm/anyio/issues/1172">#1172</a>)</li>
<li><a
href="https://github.com/agronholm/anyio/commit/6f82b2537cbbe98f3df3f295499056ab7de0b15b"><code>6f82b25</code></a>
Refactored TestTLSStream.test_receive_invalid_max_bytes() to be less
flaky</li>
<li><a
href="https://github.com/agronholm/anyio/commit/be24b0414f67f604bcbdd5ea3bcc56ab920d872e"><code>be24b04</code></a>
Relaxed timeouts to fix test flakiness</li>
<li><a
href="https://github.com/agronholm/anyio/commit/81135065749b4f60c06619b9caaf0a11871c1ddf"><code>8113506</code></a>
Fix test flakiness caused by slow callback duration logging</li>
<li><a
href="https://github.com/agronholm/anyio/commit/1e988b617b69588e33fecb75e36a9837245f562f"><code>1e988b6</code></a>
Fixed CapacityLimiter raising trio.WouldBlock instead of
anyio.WouldBlock (<a
href="https://redirect.github.com/agronholm/anyio/issues/1">#1</a>...</li>
<li><a
href="https://github.com/agronholm/anyio/commit/44713f345cd29dd4e7d76553c134543a1296cc62"><code>44713f3</code></a>
Pin setup-uv to a commit sha across downstream jobs (<a
href="https://redirect.github.com/agronholm/anyio/issues/1213">#1213</a>)</li>
<li><a
href="https://github.com/agronholm/anyio/commit/f1b7301c8264b0d2e8d24a5788fd29e93dea4040"><code>f1b7301</code></a>
Fixed stderr writes in a worker subprocess causing a deadlock (<a
href="https://redirect.github.com/agronholm/anyio/issues/1207">#1207</a>)</li>
<li><a
href="https://github.com/agronholm/anyio/commit/212be93c2cf2c841e753e95e5e2c543ee7feca90"><code>212be93</code></a>
Fix flaky test_tcp_listener_same_port using a hardcoded port (<a
href="https://redirect.github.com/agronholm/anyio/issues/1206">#1206</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/agronholm/anyio/compare/4.14.1...4.14.2">compare
view</a></li>
</ul>
</details>
<br />

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: John Kennedy <65985482+jkennedyvz@users.noreply.github.com>
Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>

.github/actions/uv_setup/action.yml

@@ -24,7 +24,7 @@ runs:
   using: composite
   steps:
     - name: Install uv and set the python version
-      uses: astral-sh/setup-uv@v7
+      uses: astral-sh/setup-uv@37802adc94f370d6bfd71619e3f0bf239e1f3b78 # v7.6.0
       with:
         python-version: ${{ inputs.python-version }}
         enable-cache: ${{ inputs.enable-cache }}

.github/workflows/_integration_test.yml

@@ -37,7 +37,7 @@ jobs:
       run:
         working-directory: libs/cli
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Get changed files
         id: changed-files
         if: github.event_name != 'workflow_dispatch'
@@ -126,8 +126,8 @@ jobs:
             exit 1
           fi
           LANGCHAIN_ANTHROPIC_VERSION=$(docker run --rm --entrypoint "" langgraph-test-h python -c "import sys; from importlib.metadata import version; v = version('langchain-anthropic'); print(v);")
-          if [ "$LANGCHAIN_ANTHROPIC_VERSION" != "1.0.0a5" ]; then
-            echo "LANGCHAIN_ANTHROPIC_VERSION != 1.0.0a5; $LANGCHAIN_ANTHROPIC_VERSION"
+          if [ "$LANGCHAIN_ANTHROPIC_VERSION" != "1.4.6" ]; then
+            echo "LANGCHAIN_ANTHROPIC_VERSION != 1.4.6; $LANGCHAIN_ANTHROPIC_VERSION"
             exit 1
           fi
 

.github/workflows/_lint.yml

@@ -31,7 +31,7 @@ jobs:
           - "3.12"
     name: "lint #${{ matrix.python-version }}"
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Get changed files
         id: changed-files
         if: github.event_name != 'workflow_dispatch'
@@ -51,16 +51,6 @@ jobs:
         working-directory: ${{ inputs.working-directory }}
         run: uv sync --frozen --group lint
 
-      - name: Get .mypy_cache to speed up mypy
-        if: steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch'
-        uses: actions/cache@v5
-        env:
-          SEGMENT_DOWNLOAD_TIMEOUT_MIN: "2"
-        with:
-          path: |
-            ${{ inputs.working-directory }}/.mypy_cache
-          key: mypy-lint-${{ runner.os }}-${{ runner.arch }}-py${{ matrix.python-version }}-${{ inputs.working-directory }}-${{ hashFiles(format('{0}/uv.lock', inputs.working-directory)) }}
-
       - name: Analysing package code with our lint
         if: steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch'
         working-directory: ${{ inputs.working-directory }}
@@ -77,16 +67,6 @@ jobs:
         working-directory: ${{ inputs.working-directory }}
         run: uv sync --group lint
 
-      - name: Get .mypy_cache_test to speed up mypy
-        if: steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch'
-        uses: actions/cache@v5
-        env:
-          SEGMENT_DOWNLOAD_TIMEOUT_MIN: "2"
-        with:
-          path: |
-            ${{ inputs.working-directory }}/.mypy_cache_test
-          key: mypy-test-${{ runner.os }}-${{ runner.arch }}-py${{ matrix.python-version }}-${{ inputs.working-directory }}-${{ hashFiles(format('{0}/uv.lock', inputs.working-directory)) }}
-
       - name: Analysing tests with our lint
         if: steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch'
         working-directory: ${{ inputs.working-directory }}

.github/workflows/_sdk_integration_test.yml

@@ -0,0 +1,85 @@
+name: sdk-py integration test
+
+on:
+  workflow_call:
+    secrets:
+      LANGSMITH_API_KEY:
+        required: false
+      DOCKERHUB_USERNAME:
+        required: false
+      DOCKERHUB_RO_TOKEN:
+        required: false
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    name: "sdk-py integration"
+    defaults:
+      run:
+        working-directory: libs/sdk-py
+    env:
+      HAS_LANGSMITH_API_KEY: ${{ secrets.LANGSMITH_API_KEY != '' }}
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Set up Python
+        uses: ./.github/actions/uv_setup
+        with:
+          python-version: "3.13"
+          cache-suffix: sdk-py-integration
+          working-directory: libs/sdk-py
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4
+        if: ${{ !github.event.pull_request.head.repo.fork }}
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_RO_TOKEN }}
+
+      - name: Install dependencies
+        shell: bash
+        run: uv sync --frozen --group test --no-dev
+
+      - name: Skip if LANGSMITH_API_KEY is not available
+        if: env.HAS_LANGSMITH_API_KEY != 'true'
+        run: |
+          echo "LANGSMITH_API_KEY is not set (likely a fork PR). Skipping integration tests."
+          exit 0
+
+      - name: Bring up integration stack
+        if: env.HAS_LANGSMITH_API_KEY == 'true'
+        working-directory: libs/sdk-py/integration
+        env:
+          LANGSMITH_API_KEY: ${{ secrets.LANGSMITH_API_KEY }}
+        run: docker compose up -d --build
+
+      - name: Wait for API healthcheck
+        if: env.HAS_LANGSMITH_API_KEY == 'true'
+        run: |
+          for i in $(seq 1 60); do
+            if curl -sf http://localhost:2024/ok >/dev/null; then
+              echo "API ready after ${i}s"
+              exit 0
+            fi
+            sleep 2
+          done
+          echo "API failed to become healthy within 120s"
+          docker compose -f libs/sdk-py/integration/docker-compose.yml logs api | tail -100
+          exit 1
+
+      - name: Run integration suite
+        if: env.HAS_LANGSMITH_API_KEY == 'true'
+        run: uv run pytest tests/integration/ -m integration
+
+      - name: Dump api logs on failure
+        if: failure() && env.HAS_LANGSMITH_API_KEY == 'true'
+        working-directory: libs/sdk-py/integration
+        run: docker compose logs api | tail -200
+
+      - name: Tear down stack
+        if: always() && env.HAS_LANGSMITH_API_KEY == 'true'
+        working-directory: libs/sdk-py/integration
+        run: docker compose down -v

.github/workflows/_test.yml

@@ -25,7 +25,7 @@ jobs:
 
     name: "test #${{ matrix.python-version }}"
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Set up Python ${{ matrix.python-version }}
         uses: ./.github/actions/uv_setup
         with:
@@ -33,7 +33,7 @@ jobs:
           cache-suffix: test-${{ inputs.working-directory }}
           working-directory: ${{ inputs.working-directory }}
       - name: Login to Docker Hub
-        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4
+        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4
         if: ${{ !github.event.pull_request.head.repo.fork }}
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}

.github/workflows/_test_langgraph.yml

@@ -23,7 +23,7 @@ jobs:
         working-directory: libs/langgraph
     name: "test #${{ matrix.python-version }}"
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Set up Python ${{ matrix.python-version }}
         uses: ./.github/actions/uv_setup
         with:
@@ -31,7 +31,7 @@ jobs:
           cache-suffix: "test-langgraph"
           working-directory: libs/langgraph
       - name: Login to Docker Hub
-        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4
+        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4
         if: ${{ !github.event.pull_request.head.repo.fork }}
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}

.github/workflows/_test_release.yml

@@ -23,7 +23,7 @@ jobs:
       version: ${{ steps.check-version.outputs.version }}
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Set up Python ${{ env.PYTHON_VERSION }}
         uses: ./.github/actions/uv_setup
@@ -48,7 +48,7 @@ jobs:
         working-directory: ${{ inputs.working-directory }}
 
       - name: Upload build
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: test-dist
           path: ${{ inputs.working-directory }}/dist/
@@ -74,15 +74,15 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
-      - uses: actions/download-artifact@v8
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           name: test-dist
           path: ${{ inputs.working-directory }}/dist/
 
       - name: Publish to test PyPI
-        uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b # release/v1
+        uses: pypa/gh-action-pypi-publish@dc37677b2e1c63e2034f94d8a5b11f265b73ba33 # release/v1
         with:
           packages-dir: ${{ inputs.working-directory }}/dist/
           verbose: true

.github/workflows/baseline.yml

@@ -17,7 +17,7 @@ jobs:
       run:
         working-directory: libs/langgraph
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - run: SHA=$(git rev-parse HEAD) && echo "SHA=$SHA" >> $GITHUB_ENV
       - name: Set up Python 3.11
         uses: ./.github/actions/uv_setup
@@ -30,7 +30,7 @@ jobs:
       - name: Run benchmarks
         run: OUTPUT=out/benchmark-baseline.json make -s benchmark
       - name: Save outputs
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           key: ${{ runner.os }}-benchmark-baseline-${{ env.SHA }}
           path: |

.github/workflows/bench.yml

@@ -15,7 +15,7 @@ jobs:
       run:
         working-directory: libs/langgraph
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - id: files
         name: Get changed files
         uses: Ana06/get-changed-files@25f79e676e7ea1868813e21465014798211fad8c # v2.3.0
@@ -30,7 +30,7 @@ jobs:
       - name: Install dependencies
         run: uv sync --group test
       - name: Download baseline
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           key: ${{ runner.os }}-benchmark-baseline
           restore-keys: |
@@ -57,15 +57,19 @@ jobs:
             echo EOF
           } >> "$GITHUB_OUTPUT"
       - name: Annotation
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
+        env:
+          CHANGED_FILES: ${{ steps.files.outputs.added_modified_renamed }}
+          BENCHMARK_OUTPUT: ${{ steps.benchmark.outputs.OUTPUT }}
+          COMPARE_OUTPUT: ${{ steps.compare.outputs.OUTPUT }}
         with:
           script: |
-            const file = JSON.parse(`${{ steps.files.outputs.added_modified_renamed }}`)[0]
-            core.notice(`${{ steps.benchmark.outputs.OUTPUT }}`, {
+            const file = JSON.parse(process.env.CHANGED_FILES || "[]")[0]
+            core.notice(process.env.BENCHMARK_OUTPUT || "", {
               title: 'Benchmark results',
               file,
             })
-            core.notice(`${{ steps.compare.outputs.OUTPUT }}`, {
+            core.notice(process.env.COMPARE_OUTPUT || "", {
               title: 'Comparison against main',
               file,
             })

.github/workflows/ci.yml

@@ -28,9 +28,10 @@ jobs:
     outputs:
       python: ${{ steps.filter.outputs.python || 'true' }}
       deps: ${{ steps.filter.outputs.deps || 'true' }}
+      sdk_py: ${{ steps.filter.outputs.sdk_py || 'true' }}
     steps:
-      - uses: actions/checkout@v6
-      - uses: dorny/paths-filter@fbd0ab8f3e69293af611ebaee6363fc25e6d187d # v4
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: dorny/paths-filter@7b450fff21473bca461d4b92ce414b9d0420d706 # v4
         if: github.event_name != 'workflow_dispatch'
         id: filter
         with:
@@ -47,6 +48,12 @@ jobs:
             deps:
               - '**/pyproject.toml'
               - '**/uv.lock'
+            sdk_py:
+              - 'libs/sdk-py/**'
+              # The integration suite runs the local langgraph core inside the
+              # server (see libs/sdk-py/integration/Dockerfile), so any core
+              # change is now exercised end-to-end and should trigger it.
+              - 'libs/langgraph/**'
 
   lint:
     needs: changes
@@ -105,9 +112,9 @@ jobs:
     name: "Check SDK methods matching"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.11"
       - name: Run check_sdk_methods script
@@ -123,7 +130,7 @@ jobs:
         python-version:
           - "3.13"
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Set up Python ${{ matrix.python-version }}
         uses: ./.github/actions/uv_setup
         with:
@@ -156,6 +163,13 @@ jobs:
     uses: ./.github/workflows/_integration_test.yml
     secrets: inherit
 
+  sdk-py-integration-test:
+    needs: changes
+    if: needs.changes.outputs.sdk_py == 'true'
+    name: "sdk-py integration test"
+    uses: ./.github/workflows/_sdk_integration_test.yml
+    secrets: inherit
+
   ci_success:
     name: "CI Success"
     needs:
@@ -166,6 +180,7 @@ jobs:
         check-sdk-methods,
         check-schema,
         integration-test,
+        sdk-py-integration-test,
       ]
     if: |
       always()

.github/workflows/deploy-redirects.yml

@@ -26,10 +26,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Setup Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: '3.11'
 
@@ -37,13 +37,13 @@ jobs:
         run: python docs/generate_redirects.py
 
       - name: Setup Pages
-        uses: actions/configure-pages@v6
+        uses: actions/configure-pages@45bfe0192ca1faeb007ade9deae92b16b8254a0d # v6.0.0
 
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v5
+        uses: actions/upload-pages-artifact@fc324d3547104276b827a68afc52ff2a11cc49c9 # v5.0.0
         with:
           path: 'docs/_site'
 
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v5
+        uses: actions/deploy-pages@cd2ce8fcbc39b97be8ca5fce6e763baed58fa128 # v5.0.0

.github/workflows/pr_lint.yml

@@ -41,6 +41,7 @@ jobs:
             docs
             ci
             deps
+            deps-dev
           requireScope: false
           ignoreLabels: |
             ignore-lint-pr-title

.github/workflows/release.yml

@@ -25,13 +25,14 @@ jobs:
       tag: ${{ steps.check-version.outputs.tag }}
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Set up Python
         uses: ./.github/actions/uv_setup
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           cache-suffix: "release"
+          enable-cache: false
           working-directory: ${{ inputs.working-directory }}
 
       # We want to keep this build stage *separate* from the release stage,
@@ -50,7 +51,7 @@ jobs:
         working-directory: ${{ inputs.working-directory }}
 
       - name: Upload build
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: dist
           path: ${{ inputs.working-directory }}/dist/
@@ -86,7 +87,7 @@ jobs:
     outputs:
       release-body: ${{ steps.generate-release-body.outputs.release-body }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           repository: langchain-ai/langgraph
           path: langgraph
@@ -157,7 +158,7 @@ jobs:
       - test-pypi-publish
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       # We explicitly *don't* set up caching here. This ensures our tests are
       # maximally sensitive to catching breakage.
@@ -261,22 +262,23 @@ jobs:
         working-directory: ${{ inputs.working-directory }}
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Set up Python
         uses: ./.github/actions/uv_setup
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           cache-suffix: "release"
+          enable-cache: false
           working-directory: ${{ inputs.working-directory }}
 
-      - uses: actions/download-artifact@v8
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           name: dist
           path: ${{ inputs.working-directory }}/dist/
 
       - name: Publish package distributions to PyPI
-        uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b # release/v1
+        uses: pypa/gh-action-pypi-publish@dc37677b2e1c63e2034f94d8a5b11f265b73ba33 # release/v1
         with:
           packages-dir: ${{ inputs.working-directory }}/dist/
           verbose: true
@@ -302,16 +304,17 @@ jobs:
         working-directory: ${{ inputs.working-directory }}
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Set up Python
         uses: ./.github/actions/uv_setup
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           cache-suffix: "release"
+          enable-cache: false
           working-directory: ${{ inputs.working-directory }}
 
-      - uses: actions/download-artifact@v8
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           name: dist
           path: ${{ inputs.working-directory }}/dist/

.github/workflows/reopen_on_assignment.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Find and reopen matching PRs
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           script: |
             const { owner, repo } = context.repo;

.github/workflows/require_issue_link.yml

@@ -50,7 +50,7 @@ jobs:
     steps:
       - name: Check for issue link and assignee
         id: check-link
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           script: |
             const { owner, repo } = context.repo;
@@ -283,7 +283,7 @@ jobs:
         if: >-
           env.ENFORCE_ISSUE_LINK == 'true' &&
           (steps.check-link.outputs.has-link != 'true' || steps.check-link.outputs.is-assigned != 'true')
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           script: |
             const { owner, repo } = context.repo;
@@ -312,7 +312,7 @@ jobs:
         if: >-
           env.ENFORCE_ISSUE_LINK == 'true' &&
           steps.check-link.outputs.has-link == 'true' && steps.check-link.outputs.is-assigned == 'true'
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           script: |
             const { owner, repo } = context.repo;
@@ -366,7 +366,7 @@ jobs:
         if: >-
           env.ENFORCE_ISSUE_LINK == 'true' &&
           (steps.check-link.outputs.has-link != 'true' || steps.check-link.outputs.is-assigned != 'true')
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           script: |
             const { owner, repo } = context.repo;

.github/workflows/tag-external-issues.yml

@@ -55,7 +55,7 @@ jobs:
     steps:
       - name: Generate GitHub App token
         id: app-token
-        uses: actions/create-github-app-token@v3
+        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
         with:
           app-id: ${{ secrets.ORG_MEMBERSHIP_APP_ID }}
           private-key: ${{ secrets.ORG_MEMBERSHIP_APP_PRIVATE_KEY }}
@@ -63,7 +63,7 @@ jobs:
       - name: Check if contributor is external
         if: steps.app-token.outcome == 'success'
         id: check-membership
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           github-token: ${{ steps.app-token.outputs.token }}
           script: |
@@ -102,7 +102,7 @@ jobs:
 
       - name: Apply contributor tier label
         if: steps.check-membership.outputs.is-external == 'true'
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |
@@ -155,7 +155,7 @@ jobs:
 
       - name: Add external label
         if: steps.check-membership.outputs.is-external == 'true'
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |
@@ -168,7 +168,7 @@ jobs:
 
       - name: Add internal label
         if: steps.check-membership.outputs.is-external == 'false'
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |
@@ -190,13 +190,13 @@ jobs:
     steps:
       - name: Generate GitHub App token
         id: app-token
-        uses: actions/create-github-app-token@v3
+        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
         with:
           app-id: ${{ secrets.ORG_MEMBERSHIP_APP_ID }}
           private-key: ${{ secrets.ORG_MEMBERSHIP_APP_PRIVATE_KEY }}
 
       - name: Backfill labels
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           github-token: ${{ steps.app-token.outputs.token }}
           script: |

.github/workflows/tag-external-prs.yml

@@ -40,7 +40,7 @@ jobs:
     steps:
       - name: Generate GitHub App token
         id: app-token
-        uses: actions/create-github-app-token@v3
+        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
         with:
           app-id: ${{ secrets.ORG_MEMBERSHIP_APP_ID }}
           private-key: ${{ secrets.ORG_MEMBERSHIP_APP_PRIVATE_KEY }}
@@ -48,7 +48,7 @@ jobs:
       - name: Check if contributor is external
         if: steps.app-token.outcome == 'success'
         id: check-membership
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           github-token: ${{ steps.app-token.outputs.token }}
           script: |
@@ -90,7 +90,7 @@ jobs:
       # event fires and triggers require_issue_link.yml.
       - name: Apply contributor tier label
         if: steps.check-membership.outputs.is-external == 'true'
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           # Use App token so the "labeled" event propagates to downstream
           # workflows (e.g. require_issue_link.yml).
@@ -145,7 +145,7 @@ jobs:
 
       - name: Add external label
         if: steps.check-membership.outputs.is-external == 'true'
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           # Use App token so the "labeled" event propagates to downstream
           # workflows (e.g. require_issue_link.yml). Events created by the
@@ -161,7 +161,7 @@ jobs:
 
       - name: Add internal label
         if: steps.check-membership.outputs.is-external == 'false'
-        uses: actions/github-script@v9
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |

.github/workflows/uv_lock_ugprade.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       
       - name: Set up uv
         uses: ./.github/actions/uv_setup

examples/README.md

@@ -1,3 +1,11 @@
 # LangGraph examples
 
-This directory is retained purely for archival purposes and is no longer updated. The examples previously found here have been moved to the newly [consolidated LangChain documentation](https://docs.langchain.com/oss/python/langgraph/overview). Please refer to the LangChain docs for the most up-to-date examples and usage guidelines for LangGraph.
+This directory is retained purely for archival purposes and is no longer updated.
+
+## 🤔 What is this?
+
+The examples previously found here have been moved to the consolidated LangChain documentation. This directory remains available for historical reference, but new examples and usage guidance are published in the docs.
+
+## 📖 Documentation
+
+For up-to-date LangGraph examples, tutorials, and guides, see the [LangGraph Docs](https://docs.langchain.com/oss/python/langgraph/overview). Get started with the [LangGraph Quickstart](https://docs.langchain.com/oss/python/langgraph/quickstart).

examples/delta-channel-dump/README.md

@@ -0,0 +1,132 @@
+# delta-channel-dump
+
+Recover messages (and other channels) from a Postgres-backed LangGraph thread
+written by **langgraph >= 1.2** (DeltaChannel format) — including **LangGraph
+Server / langgraph-api** deployments on the Postgres runtime, **deepagents
+0.6.x**, or any OSS app using `PostgresSaver` — before rolling back to an older
+runtime such as **deepagents 0.5.x / langgraph < 1.2**.
+
+langgraph-api uses the same `checkpoints` / `checkpoint_blobs` / `checkpoint_writes`
+schema as OSS `checkpoint-postgres`; this script reads those tables directly.
+
+On the older runtime, `add_messages` does not understand the `EXT_DELTA_SNAPSHOT`
+msgpack ext code and silently returns an empty list for affected channels. This
+tool reads the raw checkpoint blobs from Postgres and emits JSON you can inspect
+and re-apply via `update_state` (LangGraph Server SDK) or `graph.update_state`
+(OSS).
+
+## Install
+
+```bash
+pip install "psycopg[binary]" ormsgpack
+```
+
+## Run
+
+```bash
+export DATABASE_URI=postgres://user:pass@host:5432/dbname
+python3 dump.py \
+    --thread-id <uuid> \
+    --channel messages \
+    [--channel files ...] \
+    [--checkpoint-id <uuid>] \
+    [--checkpoint-ns ""] \
+    --output recovery.json
+```
+
+- `--thread-id` (required): thread UUID
+- `--channel` (required, repeatable): channel names to recover
+- `--checkpoint-id` (optional): target checkpoint; defaults to latest
+- `--checkpoint-ns` (optional): namespace; defaults to `""`
+- `--database-uri` (optional): Postgres URI; defaults to `DATABASE_URI` env var
+- `--output` (optional): output file; defaults to stdout
+
+## Output
+
+```json
+{
+  "thread_id": "...",
+  "checkpoint_ns": "",
+  "target_checkpoint_id": "...",
+  "parent_checkpoint_id": "...",
+  "channels": {
+    "messages": {
+      "delta_kind": "snapshot",
+      "seed_checkpoint_id": "...",
+      "seed_version": "...",
+      "seed": [{ "type": "ai", "content": "...", "id": "ai-0" }],
+      "writes": [
+        {
+          "checkpoint_id": "...",
+          "task_id": "...",
+          "idx": 0,
+          "value": [{ "type": "ai", "content": "...", "id": "ai-10" }]
+        }
+      ]
+    }
+  }
+}
+```
+
+`delta_kind` is one of:
+
+- `snapshot` — DeltaChannel snapshot blob (`channel_values[ch] == true`)
+- `legacy_plain` — pre-DeltaChannel inline or blob value
+- `no_seed` — walked to root without finding a populated ancestor
+
+`writes` are ordered oldest-to-newest (the order a reducer would replay them).
+
+## Reducing back to a single list
+
+For deepagents-style messages, combine seed and writes, then deduplicate:
+
+```python
+import json
+
+data = json.load(open("recovery.json"))
+ch = data["channels"]["messages"]
+messages = list(ch["seed"] or [])
+for w in ch["writes"]:
+    messages.extend(w["value"] or [])
+
+# Dedup by id, keep last; drop RemoveMessage tombstones
+by_id = {}
+for m in messages:
+    if isinstance(m, dict) and m.get("type") == "remove":
+        by_id.pop(m.get("id"), None)
+    elif isinstance(m, dict) and m.get("id"):
+        by_id[m["id"]] = m
+    else:
+        by_id[id(m)] = m
+reduced = list(by_id.values())
+```
+
+This approximates `_messages_delta_reducer` semantics; adjust for your graph.
+
+## Re-applying
+
+```python
+from langgraph_sdk import get_client
+
+client = get_client(url="http://localhost:8123")
+await client.threads.update_state(
+    thread_id,
+    values={"messages": reduced},
+)
+```
+
+Review the recovered JSON before calling `update_state`. This tool is
+read-only and intentionally does not mutate the database.
+
+## Scope / non-goals (v1)
+
+- **Postgres only** — OSS `PostgresSaver` or langgraph-api Postgres runtime; not
+  inmem, gRPC core, Mongo, or Redis checkpointer backends
+- **No AES decryption** (`LANGGRAPH_AES_KEY`) or custom encryption
+- **No reducer** — raw seed + writes only
+- **No automatic `update_state`** — operator applies manually
+
+## Copying
+
+`dump.py` is self-contained. Copy it anywhere; only `psycopg[binary]` and
+`ormsgpack` are required at runtime. No langgraph imports.

examples/delta-channel-dump/dump.py

@@ -0,0 +1,469 @@
+#!/usr/bin/env python3
+"""Recover delta-channel state from a Postgres-backed LangGraph thread.
+
+Works with OSS ``PostgresSaver`` and LangGraph Server / langgraph-api on the
+Postgres runtime (same checkpoint schema). Use after rolling back from
+langgraph >= 1.2 / deepagents 0.6.x to an older runtime that does not
+understand ``EXT_DELTA_SNAPSHOT`` msgpack blobs. The script walks the checkpoint
+parent chain, decodes msgpack blobs, and emits a JSON dump of per-channel
+``seed`` plus oldest-to-newest ``writes``. Apply the recovered values manually
+via ``client.threads.update_state(...)`` (Server) or ``graph.update_state``
+(OSS).
+
+Install::
+
+    pip install "psycopg[binary]" ormsgpack
+
+Run::
+
+    export DATABASE_URI=postgres://...
+    python3 dump.py --thread-id <uuid> --channel messages --output recovery.json
+
+Scope (v1): Postgres only; no AES/custom encryption; no reducer application.
+"""
+
+from __future__ import annotations
+
+import argparse
+import base64
+import json
+import os
+import sys
+import uuid
+from typing import Any
+
+import ormsgpack
+import psycopg
+
+# LangGraph msgpack EXT type codes (langgraph/checkpoint/serde/jsonplus.py).
+EXT_CONSTRUCTOR_SINGLE_ARG = 0
+EXT_CONSTRUCTOR_POS_ARGS = 1
+EXT_CONSTRUCTOR_KW_ARGS = 2
+EXT_METHOD_SINGLE_ARG = 3
+EXT_PYDANTIC_V1 = 4
+EXT_PYDANTIC_V2 = 5
+EXT_NUMPY_ARRAY = 6
+EXT_DELTA_SNAPSHOT = 7
+
+_MSGPACK_OPTION = ormsgpack.OPT_NON_STR_KEYS
+
+
+def ext_hook(code: int, data: bytes) -> Any:
+    """Decode LangGraph msgpack EXT payloads to JSON-friendly Python values."""
+    if code == EXT_DELTA_SNAPSHOT:
+        inner = ormsgpack.unpackb(data, ext_hook=ext_hook, option=_MSGPACK_OPTION)
+        return {"__delta_snapshot__": inner}
+    if code == EXT_CONSTRUCTOR_SINGLE_ARG:
+        try:
+            tup = ormsgpack.unpackb(data, ext_hook=ext_hook, option=_MSGPACK_OPTION)
+            if tup[0] == "uuid" and tup[1] == "UUID":
+                hex_ = tup[2]
+                return (
+                    f"{hex_[:8]}-{hex_[8:12]}-{hex_[12:16]}-"
+                    f"{hex_[16:20]}-{hex_[20:]}"
+                )
+            return tup[2]
+        except Exception:
+            return None
+    if code == EXT_CONSTRUCTOR_POS_ARGS:
+        try:
+            tup = ormsgpack.unpackb(data, ext_hook=ext_hook, option=_MSGPACK_OPTION)
+            if tup[0] == "langgraph.types" and tup[1] == "Send":
+                args = tup[2]
+                if len(args) == 2:
+                    return {"__send__": {"node": args[0], "arg": args[1]}}
+                return {
+                    "__send__": {
+                        "node": args[0],
+                        "arg": args[1],
+                        "timeout": args[2],
+                    }
+                }
+            return tup[2]
+        except Exception:
+            return None
+    if code in (EXT_CONSTRUCTOR_KW_ARGS, EXT_METHOD_SINGLE_ARG):
+        try:
+            tup = ormsgpack.unpackb(data, ext_hook=ext_hook, option=_MSGPACK_OPTION)
+            return tup[2]
+        except Exception:
+            return None
+    if code in (EXT_PYDANTIC_V1, EXT_PYDANTIC_V2):
+        try:
+            tup = ormsgpack.unpackb(data, ext_hook=ext_hook, option=_MSGPACK_OPTION)
+            return tup[2]
+        except Exception:
+            return None
+    if code == EXT_NUMPY_ARRAY:
+        try:
+            dtype_str, shape, order, buf = ormsgpack.unpackb(
+                data, ext_hook=ext_hook, option=_MSGPACK_OPTION
+            )
+            return {
+                "__numpy_array__": {
+                    "dtype": dtype_str,
+                    "shape": shape,
+                    "order": order,
+                    "data_b64": base64.b64encode(buf).decode("ascii"),
+                }
+            }
+        except Exception:
+            return None
+    return None
+
+
+def decode_blob(blob_type: str, blob_bytes: bytes | None) -> Any:
+    if blob_type in ("empty", "null") or blob_bytes is None:
+        return None
+    if blob_type == "msgpack":
+        return ormsgpack.unpackb(
+            blob_bytes, ext_hook=ext_hook, option=_MSGPACK_OPTION
+        )
+    if blob_type in ("bytes", "bytearray"):
+        return base64.b64encode(blob_bytes).decode("ascii")
+    raise RuntimeError(
+        f"Unknown blob type {blob_type!r}. "
+        "AES/custom-encrypted deployments are out of scope for v1."
+    )
+
+
+def delta_unwrap(value: Any) -> Any:
+    if isinstance(value, dict) and "__delta_snapshot__" in value:
+        return value["__delta_snapshot__"]
+    return value
+
+
+def json_default(obj: Any) -> Any:
+    if isinstance(obj, (bytes, bytearray)):
+        return base64.b64encode(bytes(obj)).decode("ascii")
+    if isinstance(obj, uuid.UUID):
+        return str(obj)
+    raise TypeError(f"Object of type {type(obj).__name__} is not JSON serializable")
+
+
+def resolve_target_checkpoint_id(
+    conn: psycopg.Connection[Any],
+    thread_id: str,
+    checkpoint_ns: str,
+    checkpoint_id: str | None,
+) -> str:
+    if checkpoint_id is not None:
+        return checkpoint_id
+    row = conn.execute(
+        """
+        SELECT checkpoint_id::text
+        FROM checkpoints
+        WHERE thread_id = %s AND checkpoint_ns = %s
+        ORDER BY checkpoint_id DESC
+        LIMIT 1
+        """,
+        (thread_id, checkpoint_ns),
+    ).fetchone()
+    if row is None:
+        raise SystemExit(
+            f"No checkpoints found for thread_id={thread_id!r} "
+            f"checkpoint_ns={checkpoint_ns!r}"
+        )
+    return row[0]
+
+
+def _load_checkpoint(
+    conn: psycopg.Connection[Any],
+    thread_id: str,
+    checkpoint_ns: str,
+    checkpoint_id: str,
+) -> tuple[dict[str, Any], str | None] | None:
+    row = conn.execute(
+        """
+        SELECT checkpoint, parent_checkpoint_id::text
+        FROM checkpoints
+        WHERE thread_id = %s AND checkpoint_ns = %s AND checkpoint_id = %s
+        """,
+        (thread_id, checkpoint_ns, checkpoint_id),
+    ).fetchone()
+    if row is None:
+        return None
+    return row[0], row[1]
+
+
+def _load_seed(
+    conn: psycopg.Connection[Any],
+    *,
+    thread_id: str,
+    checkpoint_ns: str,
+    channel: str,
+    checkpoint_id: str,
+    channel_values: dict[str, Any],
+    channel_versions: dict[str, str],
+) -> dict[str, Any]:
+    cv = channel_values[channel]
+    version = channel_versions.get(channel)
+    if cv is True:
+        blob_row = conn.execute(
+            """
+            SELECT type, blob
+            FROM checkpoint_blobs
+            WHERE thread_id = %s AND checkpoint_ns = %s
+              AND channel = %s AND version = %s
+            """,
+            (thread_id, checkpoint_ns, channel, version),
+        ).fetchone()
+        seed_value = None
+        if blob_row is not None and blob_row[0] != "empty":
+            seed_value = delta_unwrap(decode_blob(blob_row[0], blob_row[1]))
+        return {
+            "delta_kind": "snapshot",
+            "seed_checkpoint_id": checkpoint_id,
+            "seed_version": version,
+            "seed": seed_value,
+        }
+    if isinstance(cv, (int, float, str, bool)) or cv is None:
+        return {
+            "delta_kind": "legacy_plain",
+            "seed_checkpoint_id": checkpoint_id,
+            "seed_version": version,
+            "seed": cv,
+        }
+    blob_row = conn.execute(
+        """
+        SELECT type, blob
+        FROM checkpoint_blobs
+        WHERE thread_id = %s AND checkpoint_ns = %s
+          AND channel = %s AND version = %s
+        """,
+        (thread_id, checkpoint_ns, channel, version),
+    ).fetchone()
+    seed_value = cv if blob_row is None else decode_blob(blob_row[0], blob_row[1])
+    return {
+        "delta_kind": "legacy_plain",
+        "seed_checkpoint_id": checkpoint_id,
+        "seed_version": version,
+        "seed": seed_value,
+    }
+
+
+def _load_writes_for_checkpoint(
+    conn: psycopg.Connection[Any],
+    *,
+    thread_id: str,
+    checkpoint_ns: str,
+    checkpoint_id: str,
+    channel: str,
+) -> list[dict[str, Any]]:
+    """Load writes for one checkpoint, newest-first by ``(task_id, idx)``.
+
+    ``walk_channel`` reverses the accumulated flat list before returning;
+    DESC here yields oldest-first within each checkpoint in the final output,
+    matching ``PostgresSaver._build_delta_channels_writes_history``.
+    """
+    rows = conn.execute(
+        """
+        SELECT task_id::text, idx, type, blob
+        FROM checkpoint_writes
+        WHERE thread_id = %s AND checkpoint_ns = %s
+          AND checkpoint_id = %s AND channel = %s
+        ORDER BY task_id DESC, idx DESC
+        """,
+        (thread_id, checkpoint_ns, checkpoint_id, channel),
+    ).fetchall()
+    return [
+        {
+            "checkpoint_id": checkpoint_id,
+            "task_id": task_id,
+            "idx": idx,
+            "value": decode_blob(blob_type, blob_bytes),
+        }
+        for task_id, idx, blob_type, blob_bytes in rows
+    ]
+
+
+def walk_channel(
+    conn: psycopg.Connection[Any],
+    *,
+    thread_id: str,
+    checkpoint_ns: str,
+    start_checkpoint_id: str | None,
+    channel: str,
+) -> dict[str, Any]:
+    """Walk one channel's parent chain from target.parent backward to seed."""
+    chain_writes_newest_first: list[dict[str, Any]] = []
+    cur = start_checkpoint_id
+    while cur is not None:
+        loaded = _load_checkpoint(conn, thread_id, checkpoint_ns, cur)
+        if loaded is None:
+            break
+        checkpoint_json, parent_id = loaded
+        channel_values = checkpoint_json.get("channel_values") or {}
+        channel_versions = checkpoint_json.get("channel_versions") or {}
+
+        chain_writes_newest_first.extend(
+            _load_writes_for_checkpoint(
+                conn,
+                thread_id=thread_id,
+                checkpoint_ns=checkpoint_ns,
+                checkpoint_id=cur,
+                channel=channel,
+            )
+        )
+
+        if channel in channel_values:
+            seed = _load_seed(
+                conn,
+                thread_id=thread_id,
+                checkpoint_ns=checkpoint_ns,
+                channel=channel,
+                checkpoint_id=cur,
+                channel_values=channel_values,
+                channel_versions=channel_versions,
+            )
+            seed["writes"] = list(reversed(chain_writes_newest_first))
+            return seed
+
+        cur = parent_id
+
+    return {
+        "delta_kind": "no_seed",
+        "seed_checkpoint_id": None,
+        "seed_version": None,
+        "seed": None,
+        "writes": list(reversed(chain_writes_newest_first)),
+    }
+
+
+def walk_parent_chain(
+    conn: psycopg.Connection[Any],
+    *,
+    thread_id: str,
+    checkpoint_ns: str,
+    target_checkpoint_id: str,
+    channels: list[str],
+) -> tuple[str | None, dict[str, dict[str, Any]]]:
+    """Walk parent chain and return per-channel seed + writes (oldest-first)."""
+    parent_row = conn.execute(
+        """
+        SELECT parent_checkpoint_id::text
+        FROM checkpoints
+        WHERE thread_id = %s AND checkpoint_ns = %s AND checkpoint_id = %s
+        """,
+        (thread_id, checkpoint_ns, target_checkpoint_id),
+    ).fetchone()
+    if parent_row is None:
+        raise SystemExit(
+            f"Checkpoint {target_checkpoint_id!r} not found for thread {thread_id!r}"
+        )
+    parent_checkpoint_id = parent_row[0]
+
+    result = {
+        ch: walk_channel(
+            conn,
+            thread_id=thread_id,
+            checkpoint_ns=checkpoint_ns,
+            start_checkpoint_id=parent_checkpoint_id,
+            channel=ch,
+        )
+        for ch in channels
+    }
+    return parent_checkpoint_id, result
+
+
+def build_output(
+    *,
+    thread_id: str,
+    checkpoint_ns: str,
+    target_checkpoint_id: str,
+    parent_checkpoint_id: str | None,
+    channels: dict[str, dict[str, Any]],
+) -> dict[str, Any]:
+    return {
+        "thread_id": thread_id,
+        "checkpoint_ns": checkpoint_ns,
+        "target_checkpoint_id": target_checkpoint_id,
+        "parent_checkpoint_id": parent_checkpoint_id,
+        "channels": channels,
+    }
+
+
+def parse_args(argv: list[str] | None = None) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(
+        description=(
+            "Recover delta-channel seed + writes from Postgres checkpoint data."
+        ),
+    )
+    parser.add_argument("--thread-id", required=True, help="Thread UUID")
+    parser.add_argument(
+        "--channel",
+        action="append",
+        required=True,
+        dest="channels",
+        help="Channel name (repeatable)",
+    )
+    parser.add_argument(
+        "--checkpoint-id",
+        default=None,
+        help="Target checkpoint UUID (default: latest for thread)",
+    )
+    parser.add_argument(
+        "--checkpoint-ns",
+        default="",
+        help='Checkpoint namespace (default: "")',
+    )
+    parser.add_argument(
+        "--database-uri",
+        default=os.environ.get("DATABASE_URI"),
+        help="Postgres URI (default: DATABASE_URI env var)",
+    )
+    parser.add_argument(
+        "--output",
+        default="-",
+        help="Output JSON file path (default: stdout)",
+    )
+    return parser.parse_args(argv)
+
+
+def main(argv: list[str] | None = None) -> int:
+    args = parse_args(argv)
+    if not args.database_uri:
+        print(
+            "error: --database-uri or DATABASE_URI is required",
+            file=sys.stderr,
+        )
+        return 2
+
+    thread_id = str(uuid.UUID(args.thread_id))
+    channels = list(dict.fromkeys(args.channels))
+
+    with psycopg.connect(args.database_uri) as conn:
+        target_checkpoint_id = resolve_target_checkpoint_id(
+            conn,
+            thread_id,
+            args.checkpoint_ns,
+            args.checkpoint_id,
+        )
+        parent_checkpoint_id, channel_data = walk_parent_chain(
+            conn,
+            thread_id=thread_id,
+            checkpoint_ns=args.checkpoint_ns,
+            target_checkpoint_id=target_checkpoint_id,
+            channels=channels,
+        )
+
+    output = build_output(
+        thread_id=thread_id,
+        checkpoint_ns=args.checkpoint_ns,
+        target_checkpoint_id=target_checkpoint_id,
+        parent_checkpoint_id=parent_checkpoint_id,
+        channels=channel_data,
+    )
+    payload = json.dumps(output, indent=2, default=json_default)
+
+    if args.output == "-":
+        print(payload)
+    else:
+        with open(args.output, "w", encoding="utf-8") as f:
+            f.write(payload)
+            f.write("\n")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

libs/checkpoint-conformance/README.md

@@ -1,15 +1,27 @@
-# langgraph-checkpoint-conformance
+# LangGraph Checkpoint Conformance
 
-Conformance test suite for [LangGraph](https://github.com/langchain-ai/langgraph) checkpointer implementations.
+[![PyPI - Version](https://img.shields.io/pypi/v/langgraph-checkpoint-conformance?label=%20)](https://pypi.org/project/langgraph-checkpoint-conformance/#history)
+[![PyPI - License](https://img.shields.io/pypi/l/langgraph-checkpoint-conformance)](https://opensource.org/licenses/MIT)
+[![PyPI - Downloads](https://img.shields.io/pepy/dt/langgraph-checkpoint-conformance)](https://pypistats.org/packages/langgraph-checkpoint-conformance)
+[![Twitter](https://img.shields.io/twitter/url/https/twitter.com/langchain_oss.svg?style=social&label=Follow%20%40LangChain)](https://x.com/langchain_oss)
 
-Validates that a `BaseCheckpointSaver` subclass correctly implements the checkpoint storage contract — blob round-trips, metadata preservation, namespace isolation, incremental channel updates, and more.
+To help you ship LangGraph apps to production faster, check out [LangSmith](https://www.langchain.com/langsmith).
+[LangSmith](https://www.langchain.com/langsmith) is a unified developer platform for building, testing, and monitoring LLM applications.
 
-## Installation
+## Quick Install
 
 ```bash
-pip install langgraph-checkpoint-conformance
+uv add langgraph-checkpoint-conformance
 ```
 
+## 🤔 What is this?
+
+This library provides a conformance test suite for [LangGraph](https://github.com/langchain-ai/langgraph) checkpointer implementations. It validates that a `BaseCheckpointSaver` subclass correctly implements the checkpoint storage contract — blob round-trips, metadata preservation, namespace isolation, incremental channel updates, and more.
+
+## 📖 Documentation
+
+For full documentation, see the [API reference](https://reference.langchain.com/python/langgraph/). For conceptual guides on persistence and memory, see the [LangGraph Docs](https://docs.langchain.com/oss/python/langgraph/overview).
+
 ## Quick start
 
 Register your checkpointer with `@checkpointer_test` and run `validate()`:
@@ -63,6 +75,7 @@ The suite tests **base** capabilities (required) and **extended** capabilities (
 | `delete_for_runs` | no | `adelete_for_runs` |
 | `copy_thread` | no | `acopy_thread` |
 | `prune` | no | `aprune` |
+| `delta_channel_history` | no | `aget_delta_channel_history` |
 
 Extended capabilities are detected by checking whether the method is overridden from `BaseCheckpointSaver`. If not overridden, those tests are skipped.
 
@@ -109,3 +122,13 @@ async def pg_checkpointer():
     async with PostgresSaver.from_conn_string(CONN_STRING) as saver:
         yield saver
 ```
+
+## 📕 Releases & Versioning
+
+See our [Releases](https://docs.langchain.com/oss/python/release-policy) and [Versioning](https://docs.langchain.com/oss/python/versioning) policies.
+
+## 💁 Contributing
+
+As an open-source project in a rapidly developing field, we are extremely open to contributions, whether it be in the form of a new feature, improved infrastructure, or better documentation.
+
+For detailed information on how to contribute, see the [Contributing Guide](https://docs.langchain.com/oss/python/contributing/overview).

libs/checkpoint-conformance/langgraph/checkpoint/conformance/capabilities.py

@@ -23,6 +23,7 @@ class Capability(str, Enum):
     DELETE_FOR_RUNS = "delete_for_runs"
     COPY_THREAD = "copy_thread"
     PRUNE = "prune"
+    DELTA_CHANNEL_HISTORY = "delta_channel_history"
 
 
 # Capabilities that every checkpointer must support.
@@ -42,6 +43,7 @@ EXTENDED_CAPABILITIES = frozenset(
         Capability.DELETE_FOR_RUNS,
         Capability.COPY_THREAD,
         Capability.PRUNE,
+        Capability.DELTA_CHANNEL_HISTORY,
     }
 )
 
@@ -57,6 +59,7 @@ _CAPABILITY_METHOD_MAP: dict[Capability, str] = {
     Capability.DELETE_FOR_RUNS: "adelete_for_runs",
     Capability.COPY_THREAD: "acopy_thread",
     Capability.PRUNE: "aprune",
+    Capability.DELTA_CHANNEL_HISTORY: "aget_delta_channel_history",
 }
 
 

libs/checkpoint-conformance/langgraph/checkpoint/conformance/spec/__init__.py

@@ -9,6 +9,9 @@ from langgraph.checkpoint.conformance.spec.test_delete_for_runs import (
 from langgraph.checkpoint.conformance.spec.test_delete_thread import (
     run_delete_thread_tests,
 )
+from langgraph.checkpoint.conformance.spec.test_delta_channel_history import (
+    run_delta_channel_history_tests,
+)
 from langgraph.checkpoint.conformance.spec.test_get_tuple import run_get_tuple_tests
 from langgraph.checkpoint.conformance.spec.test_list import run_list_tests
 from langgraph.checkpoint.conformance.spec.test_prune import run_prune_tests
@@ -24,4 +27,5 @@ __all__ = [
     "run_delete_for_runs_tests",
     "run_copy_thread_tests",
     "run_prune_tests",
+    "run_delta_channel_history_tests",
 ]

libs/checkpoint-conformance/langgraph/checkpoint/conformance/spec/_delta_fixtures.py

@@ -0,0 +1,99 @@
+"""Shared fixtures for delta-channel conformance tests.
+
+Builds a parent chain with `_DeltaSnapshot` blobs at known positions via
+direct `aput` / `aput_writes` calls. No langgraph or Pregel dependency.
+"""
+
+from __future__ import annotations
+
+from collections.abc import Sequence
+from typing import Any
+from uuid import uuid4
+
+from langchain_core.runnables import RunnableConfig
+from langgraph.checkpoint.base import BaseCheckpointSaver, Checkpoint
+from langgraph.checkpoint.base.id import uuid6
+
+from langgraph.checkpoint.conformance.test_utils import generate_metadata
+
+
+async def build_delta_chain(
+    saver: BaseCheckpointSaver,
+    *,
+    thread_id: str | None = None,
+    checkpoint_ns: str = "",
+    channel: str = "messages",
+    snapshots_at_steps: Sequence[int] = (0,),
+    total_steps: int = 6,
+    write_value_fn: Any | None = None,
+) -> list[RunnableConfig]:
+    """Build a parent chain with `_DeltaSnapshot` at known positions.
+
+    Args:
+        saver: Checkpointer instance.
+        thread_id: Defaults to a random UUID.
+        checkpoint_ns: Namespace (default root).
+        channel: Channel name used for snapshots and writes.
+        snapshots_at_steps: Steps at which a `_DeltaSnapshot` blob is stored
+            in `channel_values[channel]`. Step 0 is the oldest checkpoint.
+        total_steps: Number of checkpoints in the chain.
+        write_value_fn: Callable(step) -> write value. Defaults to step index.
+
+    Returns:
+        List of stored configs (oldest first), one per step.
+    """
+    if write_value_fn is None:
+
+        def write_value_fn(step: int) -> Any:
+            return step
+
+    from langgraph.checkpoint.serde.types import _DeltaSnapshot
+
+    thread_id = thread_id or str(uuid4())
+    snapshot_set = set(snapshots_at_steps)
+    stored: list[RunnableConfig] = []
+    parent_cfg: RunnableConfig | None = None
+
+    for step in range(total_steps):
+        config: RunnableConfig = {
+            "configurable": {
+                "thread_id": thread_id,
+                "checkpoint_ns": checkpoint_ns,
+            }
+        }
+        if parent_cfg:
+            config["configurable"]["checkpoint_id"] = parent_cfg["configurable"][
+                "checkpoint_id"
+            ]
+
+        channel_values: dict[str, Any] = {}
+        channel_versions: dict[str, int] = {}
+        if step in snapshot_set:
+            channel_values[channel] = _DeltaSnapshot(
+                write_value_fn(step),
+            )
+            channel_versions[channel] = step + 1
+
+        cp = Checkpoint(
+            v=1,
+            id=str(uuid6(clock_seq=-1)),
+            ts="",
+            channel_values=channel_values,
+            channel_versions=channel_versions,
+            versions_seen={},
+            updated_channels=None,
+        )
+        new_versions = dict(channel_versions)
+        parent_cfg = await saver.aput(
+            config, cp, generate_metadata(step=step), new_versions
+        )
+        stored.append(parent_cfg)
+
+        # Write a pending write for non-snapshot steps so the walk has
+        # something to collect.
+        if step not in snapshot_set:
+            await saver.aput_writes(
+                parent_cfg, [(channel, write_value_fn(step))], str(uuid4())
+            )
+
+    return stored

libs/checkpoint-conformance/langgraph/checkpoint/conformance/spec/test_delta_channel_history.py

@@ -0,0 +1,307 @@
+"""DELTA_CHANNEL_HISTORY capability tests — aget_delta_channel_history contract."""
+
+from __future__ import annotations
+
+import traceback
+from collections.abc import Callable
+from uuid import uuid4
+
+from langgraph.checkpoint.base import BaseCheckpointSaver, Checkpoint
+from langgraph.checkpoint.base.id import uuid6
+from langgraph.checkpoint.serde.types import _DeltaSnapshot
+
+from langgraph.checkpoint.conformance.spec._delta_fixtures import build_delta_chain
+from langgraph.checkpoint.conformance.test_utils import generate_metadata
+
+
+async def test_history_returns_writes_oldest_first(
+    saver: BaseCheckpointSaver,
+) -> None:
+    """Writes are returned oldest-to-newest."""
+    tid = str(uuid4())
+    # 5 steps: snapshot at 0, writes at 1,2,3,4.
+    # Head is step 4. Walk starts at step 3 (parent of head).
+    # Collects writes from steps 1,2,3 (between snapshot at 0 and head's parent).
+    configs = await build_delta_chain(
+        saver, thread_id=tid, channel="ch", snapshots_at_steps=[0], total_steps=5
+    )
+    head = configs[-1]
+    result = await saver.aget_delta_channel_history(config=head, channels=["ch"])
+    writes = result["ch"]["writes"]
+    values = [w[2] for w in writes]
+    assert values == [1, 2, 3], f"Expected [1,2,3], got {values}"
+
+
+async def test_history_seed_is_nearest_snapshot(
+    saver: BaseCheckpointSaver,
+) -> None:
+    """Seed is the value from the nearest ancestor with channel_values populated."""
+    tid = str(uuid4())
+    # 6 steps: snapshots at 0 and 3, writes at 1,2,4,5.
+    # Head is step 5. Walk from step 4 backward stops at step 3 (snapshot).
+    # Collects writes from step 4 only (between step 3 and head's parent step 4).
+    configs = await build_delta_chain(
+        saver,
+        thread_id=tid,
+        channel="ch",
+        snapshots_at_steps=[0, 3],
+        total_steps=6,
+    )
+    head = configs[-1]
+    result = await saver.aget_delta_channel_history(config=head, channels=["ch"])
+    assert "seed" in result["ch"], "Expected seed from snapshot at step 3"
+    seed = result["ch"]["seed"]
+    actual_value = seed.value if isinstance(seed, _DeltaSnapshot) else seed
+    assert actual_value == 3, f"Expected seed value 3 (step 3), got {actual_value}"
+    writes = result["ch"]["writes"]
+    values = [w[2] for w in writes]
+    assert values == [4], f"Expected [4], got {values}"
+
+
+async def test_history_excludes_target_pending_writes(
+    saver: BaseCheckpointSaver,
+) -> None:
+    """Target's own pending_writes are NOT included in the history."""
+    tid = str(uuid4())
+    configs = await build_delta_chain(
+        saver, thread_id=tid, channel="ch", snapshots_at_steps=[0], total_steps=3
+    )
+    head = configs[-1]
+    # Add writes directly to the head checkpoint
+    await saver.aput_writes(head, [("ch", "extra")], str(uuid4()))
+    result = await saver.aget_delta_channel_history(config=head, channels=["ch"])
+    writes = result["ch"]["writes"]
+    values = [w[2] for w in writes]
+    assert "extra" not in values, f"Target's writes should be excluded, got {values}"
+
+
+async def test_history_multi_channel(
+    saver: BaseCheckpointSaver,
+) -> None:
+    """Multiple channels have independent walk termination."""
+    tid = str(uuid4())
+    configs: list = []
+    parent_cfg = None
+
+    for step in range(5):
+        config = {"configurable": {"thread_id": tid, "checkpoint_ns": ""}}
+        if parent_cfg:
+            config["configurable"]["checkpoint_id"] = parent_cfg["configurable"][
+                "checkpoint_id"
+            ]
+        cv: dict = {}
+        cvs: dict = {}
+        if step == 1:
+            cv["a"] = _DeltaSnapshot("snap_a")
+            cvs["a"] = step + 1
+        if step == 3:
+            cv["b"] = _DeltaSnapshot("snap_b")
+            cvs["b"] = step + 1
+        cp = Checkpoint(
+            v=1,
+            id=str(uuid6(clock_seq=-1)),
+            ts="",
+            channel_values=cv,
+            channel_versions=cvs,
+            versions_seen={},
+            updated_channels=None,
+        )
+        parent_cfg = await saver.aput(config, cp, generate_metadata(step=step), cvs)
+        configs.append(parent_cfg)
+        await saver.aput_writes(parent_cfg, [("a", step), ("b", step)], str(uuid4()))
+
+    head = configs[-1]
+    result = await saver.aget_delta_channel_history(config=head, channels=["a", "b"])
+    a_writes = [w[2] for w in result["a"]["writes"]]
+    b_writes = [w[2] for w in result["b"]["writes"]]
+    assert a_writes == [1, 2, 3], f"Expected a writes [1,2,3], got {a_writes}"
+    assert b_writes == [3], f"Expected b writes [3], got {b_writes}"
+
+
+async def test_history_empty_channels_returns_empty(
+    saver: BaseCheckpointSaver,
+) -> None:
+    """Empty channels list returns empty mapping."""
+    tid = str(uuid4())
+    configs = await build_delta_chain(
+        saver, thread_id=tid, channel="ch", snapshots_at_steps=[0], total_steps=3
+    )
+    result = await saver.aget_delta_channel_history(config=configs[-1], channels=[])
+    assert result == {}
+
+
+async def test_history_walk_to_root_no_seed(
+    saver: BaseCheckpointSaver,
+) -> None:
+    """Walk reaches root without finding seed — no 'seed' key in result."""
+    tid = str(uuid4())
+    configs = await build_delta_chain(
+        saver,
+        thread_id=tid,
+        channel="ch",
+        snapshots_at_steps=[],
+        total_steps=4,
+    )
+    head = configs[-1]
+    result = await saver.aget_delta_channel_history(config=head, channels=["ch"])
+    assert "seed" not in result["ch"], f"Expected no seed, got {result['ch']}"
+
+
+async def test_history_migration_plain_value_as_seed(
+    saver: BaseCheckpointSaver,
+) -> None:
+    """Pre-delta plain value in channel_values acts as seed (migration case).
+
+    When a thread was originally using a regular channel (BinaryOperatorAggregate)
+    and later switches to DeltaChannel, the old checkpoint has a plain value in
+    channel_values[ch] (not a _DeltaSnapshot). The walk should treat it as the
+    seed and terminate there.
+    """
+    tid = str(uuid4())
+    configs: list = []
+    parent_cfg = None
+
+    for step in range(4):
+        config = {"configurable": {"thread_id": tid, "checkpoint_ns": ""}}
+        if parent_cfg:
+            config["configurable"]["checkpoint_id"] = parent_cfg["configurable"][
+                "checkpoint_id"
+            ]
+        cv: dict = {}
+        cvs: dict = {}
+        # Step 1: plain value (migration case — old checkpoint before delta)
+        if step == 1:
+            cv["ch"] = [10, 20, 30]
+            cvs["ch"] = step + 1
+        cp = Checkpoint(
+            v=1,
+            id=str(uuid6(clock_seq=-1)),
+            ts="",
+            channel_values=cv,
+            channel_versions=cvs,
+            versions_seen={},
+            updated_channels=None,
+        )
+        parent_cfg = await saver.aput(config, cp, generate_metadata(step=step), cvs)
+        configs.append(parent_cfg)
+        if step != 1:
+            await saver.aput_writes(parent_cfg, [("ch", step)], str(uuid4()))
+
+    head = configs[-1]
+    result = await saver.aget_delta_channel_history(config=head, channels=["ch"])
+    # Seed should be the plain value from step 1
+    assert "seed" in result["ch"], "Expected seed from migration plain value at step 1"
+    seed = result["ch"]["seed"]
+    assert seed == [10, 20, 30], f"Expected plain value [10,20,30], got {seed}"
+    # Writes should be from step 2 only (between seed at step 1 and head's parent step 2)
+    writes = result["ch"]["writes"]
+    values = [w[2] for w in writes]
+    assert values == [2], f"Expected [2], got {values}"
+
+
+async def test_history_seed_ancestor_own_writes_are_replayed(
+    saver: BaseCheckpointSaver,
+) -> None:
+    """Writes stored AT the seed ancestor must be included in `writes`.
+
+    A stored value is the state ENTERING its checkpoint; the writes stored
+    under that same checkpoint are what produced its child and are therefore
+    NOT subsumed by it. Only writes at ancestors OLDER than the seed are
+    subsumed, and the walk terminates before reaching them.
+
+    This holds for plain-value seeds (migration from a pre-delta channel type)
+    exactly as it does for `_DeltaSnapshot` seeds. Skipping the seed
+    ancestor's own writes silently drops the first post-migration write.
+    """
+    tid = str(uuid4())
+    configs: list = []
+    parent_cfg = None
+
+    # Each step's write is labelled by the role it plays, so the assertion
+    # below reads directly rather than by step index.
+    writes_by_step = {
+        0: "older-than-seed",  # subsumed by the value stored at step 1
+        1: "at-seed",  # the seed's own write, produced step 2
+        2: "after-seed",  # delta-era write on the path to the head
+        3: "pending-at-head",  # pending for the next step, never replayed
+    }
+    # Steps 0 and 1 store a plain value; 1 is the nearest, so it is the seed.
+    values_by_step = {0: [10], 1: [10, 20]}
+
+    for step in range(4):
+        config = {"configurable": {"thread_id": tid, "checkpoint_ns": ""}}
+        if parent_cfg:
+            config["configurable"]["checkpoint_id"] = parent_cfg["configurable"][
+                "checkpoint_id"
+            ]
+        cv: dict = {}
+        cvs: dict = {}
+        if step in values_by_step:
+            cv["ch"] = values_by_step[step]
+            cvs["ch"] = step + 1
+        cp = Checkpoint(
+            v=1,
+            id=str(uuid6(clock_seq=-1)),
+            ts="",
+            channel_values=cv,
+            channel_versions=cvs,
+            versions_seen={},
+            updated_channels=None,
+        )
+        parent_cfg = await saver.aput(config, cp, generate_metadata(step=step), cvs)
+        configs.append(parent_cfg)
+        await saver.aput_writes(
+            parent_cfg, [("ch", writes_by_step[step])], str(uuid4())
+        )
+
+    head = configs[-1]
+    result = await saver.aget_delta_channel_history(config=head, channels=["ch"])
+
+    assert "seed" in result["ch"], "Expected seed from plain value at step 1"
+    assert result["ch"]["seed"] == [10, 20], (
+        f"Expected nearest plain value [10, 20], got {result['ch']['seed']}"
+    )
+    values = [w[2] for w in result["ch"]["writes"]]
+    assert values == ["at-seed", "after-seed"], (
+        f'Expected ["at-seed", "after-seed"], got {values}'
+    )
+
+
+ALL_DELTA_CHANNEL_HISTORY_TESTS = [
+    test_history_returns_writes_oldest_first,
+    test_history_seed_is_nearest_snapshot,
+    test_history_excludes_target_pending_writes,
+    test_history_multi_channel,
+    test_history_empty_channels_returns_empty,
+    test_history_walk_to_root_no_seed,
+    test_history_migration_plain_value_as_seed,
+    test_history_seed_ancestor_own_writes_are_replayed,
+]
+
+
+async def run_delta_channel_history_tests(
+    saver: BaseCheckpointSaver,
+    on_test_result: Callable[[str, str, bool, str | None], None] | None = None,
+) -> tuple[int, int, list[str]]:
+    """Run all delta_channel_history tests. Returns (passed, failed, failure_names)."""
+    passed = 0
+    failed = 0
+    failures: list[str] = []
+    for test_fn in ALL_DELTA_CHANNEL_HISTORY_TESTS:
+        try:
+            await test_fn(saver)
+            passed += 1
+            if on_test_result:
+                on_test_result("delta_channel_history", test_fn.__name__, True, None)
+        except Exception:
+            failed += 1
+            msg = f"{test_fn.__name__}: {traceback.format_exc()}"
+            failures.append(msg)
+            if on_test_result:
+                on_test_result(
+                    "delta_channel_history",
+                    test_fn.__name__,
+                    False,
+                    traceback.format_exc(),
+                )
+    return passed, failed, failures

libs/checkpoint-conformance/langgraph/checkpoint/conformance/spec/test_list.py

@@ -4,6 +4,7 @@ from __future__ import annotations
 
 import traceback
 from collections.abc import Callable
+from typing import cast
 from uuid import uuid4
 
 from langgraph.checkpoint.base import BaseCheckpointSaver
@@ -335,8 +336,9 @@ async def test_list_metadata_custom_keys(
         results.append(tup)
 
     assert len(results) == 1
-    assert results[0].metadata["score"] == 42
-    assert results[0].metadata["run_id"] == "run-abc"
+    metadata = cast(dict[str, object], results[0].metadata)
+    assert metadata["score"] == 42
+    assert metadata["run_id"] == "run-abc"
 
 
 ALL_LIST_TESTS = [

libs/checkpoint-conformance/langgraph/checkpoint/conformance/validate.py

@@ -19,6 +19,9 @@ from langgraph.checkpoint.conformance.spec.test_delete_for_runs import (
 from langgraph.checkpoint.conformance.spec.test_delete_thread import (
     run_delete_thread_tests,
 )
+from langgraph.checkpoint.conformance.spec.test_delta_channel_history import (
+    run_delta_channel_history_tests,
+)
 from langgraph.checkpoint.conformance.spec.test_get_tuple import run_get_tuple_tests
 from langgraph.checkpoint.conformance.spec.test_list import run_list_tests
 from langgraph.checkpoint.conformance.spec.test_prune import run_prune_tests
@@ -35,6 +38,7 @@ _RUNNERS = {
     Capability.DELETE_FOR_RUNS: run_delete_for_runs_tests,
     Capability.COPY_THREAD: run_copy_thread_tests,
     Capability.PRUNE: run_prune_tests,
+    Capability.DELTA_CHANNEL_HISTORY: run_delta_channel_history_tests,
 }
 
 

libs/checkpoint-conformance/pyproject.toml

@@ -43,7 +43,11 @@ asyncio_mode = "auto"
 # The extended methods (acopy_thread, adelete_for_runs, aprune) are checked
 # at runtime via capability detection and may not exist on the installed
 # base class. Dict literal inference is also overly strict for RunnableConfig.
+# Delta-channel tests import from `langgraph` (not a declared dep of this
+# package — at test time it is installed alongside); private `_DeltaSnapshot`
+# imports are intentional (beta surface).
 unresolved-attribute = "ignore"
+unresolved-import = "ignore"
 invalid-argument-type = "ignore"
 invalid-return-type = "ignore"
 
@@ -54,10 +58,19 @@ lint.select = [
   "UP", # pyupgrade
   "B",  # flake8-bugbear
   "I",  # isort
+  "PLC0415",  # import-outside-top-level
+  "RUF100",  # unused noqa directive
 ]
 lint.ignore = ["E501", "B008"]
+# PLC0415 (import-outside-top-level) is enforced in tests only. Library code
+# still has deferred imports that have not been reviewed, so it stays exempt
+# for now.
+lint.per-file-ignores = { "langgraph/**" = ["PLC0415"] }
 target-version = "py310"
 
+[tool.uv.sources]
+langgraph-checkpoint = {path = "../checkpoint", editable = true}
+
 [[tool.uv.index]]
 name = "testpypi"
 url = "https://test.pypi.org/simple/"

libs/checkpoint-postgres/Makefile

@@ -47,22 +47,19 @@ test_watch:
 
 # Define a variable for Python and notebook files.
 PYTHON_FILES=.
-MYPY_CACHE=.mypy_cache
 lint format: PYTHON_FILES=.
 lint_diff format_diff: PYTHON_FILES=$(shell git diff --name-only --relative --diff-filter=d main . | grep -E '\.py$$|\.ipynb$$')
 lint_package: PYTHON_FILES=langgraph
 lint_tests: PYTHON_FILES=tests
-lint_tests: MYPY_CACHE=.mypy_cache_test
 
 lint lint_diff lint_package lint_tests:
 	uv run ruff check .
 	[ "$(PYTHON_FILES)" = "" ] || uv run ruff format $(PYTHON_FILES) --diff
 	[ "$(PYTHON_FILES)" = "" ] || uv run ruff check --select I $(PYTHON_FILES)
-	[ "$(PYTHON_FILES)" = "" ] || mkdir -p $(MYPY_CACHE)
-	[ "$(PYTHON_FILES)" = "" ] || uv run mypy $(PYTHON_FILES) --cache-dir $(MYPY_CACHE)
+	[ "$(PYTHON_FILES)" = "" ] || uv run ty check $(PYTHON_FILES)
 
 type:
-	mkdir -p $(MYPY_CACHE) && uv run mypy $(PYTHON_FILES) --cache-dir $(MYPY_CACHE)
+	uv run ty check $(PYTHON_FILES)
 
 format format_diff:
 	uv run ruff format $(PYTHON_FILES)

libs/checkpoint-postgres/README.md

@@ -1,10 +1,28 @@
 # LangGraph Checkpoint Postgres
 
-Implementation of LangGraph CheckpointSaver that uses Postgres.
+[![PyPI - Version](https://img.shields.io/pypi/v/langgraph-checkpoint-postgres?label=%20)](https://pypi.org/project/langgraph-checkpoint-postgres/#history)
+[![PyPI - License](https://img.shields.io/pypi/l/langgraph-checkpoint-postgres)](https://opensource.org/licenses/MIT)
+[![PyPI - Downloads](https://img.shields.io/pepy/dt/langgraph-checkpoint-postgres)](https://pypistats.org/packages/langgraph-checkpoint-postgres)
+[![Twitter](https://img.shields.io/twitter/url/https/twitter.com/langchain_oss.svg?style=social&label=Follow%20%40LangChain)](https://x.com/langchain_oss)
 
-## Dependencies
+To help you ship LangGraph apps to production faster, check out [LangSmith](https://www.langchain.com/langsmith).
+[LangSmith](https://www.langchain.com/langsmith) is a unified developer platform for building, testing, and monitoring LLM applications.
 
-By default `langgraph-checkpoint-postgres` installs `psycopg` (Psycopg 3) without any extras. However, you can choose a specific installation that best suits your needs [here](https://www.psycopg.org/psycopg3/docs/basic/install.html) (for example, `psycopg[binary]`).
+## Quick Install
+
+```bash
+uv add langgraph-checkpoint-postgres
+```
+
+## 🤔 What is this?
+
+This library provides a Postgres implementation of LangGraph's checkpoint saver. Use it when you want LangGraph state persistence backed by Postgres for durable, long-running workflows and agents.
+
+By default, `langgraph-checkpoint-postgres` installs `psycopg` (Psycopg 3) without any extras. You can choose a specific installation that best suits your needs in the [Psycopg installation docs](https://www.psycopg.org/psycopg3/docs/basic/install.html), for example `psycopg[binary]`.
+
+## 📖 Documentation
+
+For full documentation, see the [API reference](https://reference.langchain.com/python/langgraph.checkpoint.postgres). For conceptual guides on persistence and memory, see the [LangGraph Docs](https://docs.langchain.com/oss/python/langgraph/overview).
 
 ## Security
 
@@ -20,10 +38,12 @@ By default `langgraph-checkpoint-postgres` installs `psycopg` (Psycopg 3) withou
 > When manually creating Postgres connections and passing them to `PostgresSaver` or `AsyncPostgresSaver`, make sure to include `autocommit=True` and `row_factory=dict_row` (`from psycopg.rows import dict_row`). See a full example in this [how-to guide](https://langchain-ai.github.io/langgraph/how-tos/persistence_postgres/).
 >
 > **Why these parameters are required:**
+>
 > - `autocommit=True`: Required for the `.setup()` method to properly commit the checkpoint tables to the database. Without this, table creation may not be persisted.
 > - `row_factory=dict_row`: Required because the PostgresSaver implementation accesses database rows using dictionary-style syntax (e.g., `row["column_name"]`). The default `tuple_row` factory returns tuples that only support index-based access (e.g., `row[0]`), which will cause `TypeError` exceptions when the checkpointer tries to access columns by name.
 >
 > **Example of incorrect usage:**
+>
 > ```python
 > # ❌ This will fail with TypeError during checkpointer operations
 > with psycopg.connect(DB_URI) as conn:  # Missing autocommit=True and row_factory=dict_row
@@ -47,24 +67,12 @@ with PostgresSaver.from_conn_string(DB_URI) as checkpointer:
         "v": 4,
         "ts": "2024-07-31T20:14:19.804150+00:00",
         "id": "1ef4f797-8335-6428-8001-8a1503f9b875",
-        "channel_values": {
-            "my_key": "meow",
-            "node": "node"
-        },
-        "channel_versions": {
-            "__start__": 2,
-            "my_key": 3,
-            "start:node": 3,
-            "node": 3
-        },
+        "channel_values": {"my_key": "meow", "node": "node"},
+        "channel_versions": {"__start__": 2, "my_key": 3, "start:node": 3, "node": 3},
         "versions_seen": {
             "__input__": {},
-            "__start__": {
-            "__start__": 1
-            },
-            "node": {
-            "start:node": 2
-            }
+            "__start__": {"__start__": 1},
+            "node": {"start:node": 2},
         },
     }
 
@@ -88,24 +96,12 @@ async with AsyncPostgresSaver.from_conn_string(DB_URI) as checkpointer:
         "v": 4,
         "ts": "2024-07-31T20:14:19.804150+00:00",
         "id": "1ef4f797-8335-6428-8001-8a1503f9b875",
-        "channel_values": {
-            "my_key": "meow",
-            "node": "node"
-        },
-        "channel_versions": {
-            "__start__": 2,
-            "my_key": 3,
-            "start:node": 3,
-            "node": 3
-        },
+        "channel_values": {"my_key": "meow", "node": "node"},
+        "channel_versions": {"__start__": 2, "my_key": 3, "start:node": 3, "node": 3},
         "versions_seen": {
             "__input__": {},
-            "__start__": {
-            "__start__": 1
-            },
-            "node": {
-            "start:node": 2
-            }
+            "__start__": {"__start__": 1},
+            "node": {"start:node": 2},
         },
     }
 
@@ -118,3 +114,13 @@ async with AsyncPostgresSaver.from_conn_string(DB_URI) as checkpointer:
     # list checkpoints
     [c async for c in checkpointer.alist(read_config)]
 ```
+
+## 📕 Releases & Versioning
+
+See our [Releases](https://docs.langchain.com/oss/python/release-policy) and [Versioning](https://docs.langchain.com/oss/python/versioning) policies.
+
+## 💁 Contributing
+
+As an open-source project in a rapidly developing field, we are extremely open to contributions, whether it be in the form of a new feature, improved infrastructure, or better documentation.
+
+For detailed information on how to contribute, see the [Contributing Guide](https://docs.langchain.com/oss/python/contributing/overview).

libs/checkpoint-postgres/langgraph/checkpoint/postgres/__init__.py

@@ -223,7 +223,7 @@ class PostgresSaver(BasePostgresSaver):
             >>> checkpoint_tuple = memory.get_tuple(config)
             >>> print(checkpoint_tuple)
             CheckpointTuple(...)
-        """  # noqa
+        """
         thread_id = config["configurable"]["thread_id"]
         checkpoint_id = get_checkpoint_id(config)
         checkpoint_ns = config["configurable"].get("checkpoint_ns", "")
@@ -478,9 +478,11 @@ class PostgresSaver(BasePostgresSaver):
         stage1_sql = _build_delta_stage1_sql(channels, paged=True)
         parent_of: dict[str, str | None] = {}
         ver_by_i_by_cid: list[dict[str, str | None]] = [{} for _ in channels]
-        hs_by_i_by_cid: list[dict[str, bool]] = [{} for _ in channels]
+        hb_by_i_by_cid: list[dict[str, bool]] = [{} for _ in channels]
+        inline_by_i_by_cid: list[dict[str, Any]] = [{} for _ in channels]
         chain_by_ch: dict[str, list[str]] = {ch: [] for ch in channels}
         seed_ver_by_ch: dict[str, str | None] = {ch: None for ch in channels}
+        seed_inline_by_ch: dict[str, Any] = {}
         walk_cursor_by_ch: dict[str, str | None] = {}
         seeded: set[str] = set()
         cursor: str | None = None
@@ -489,7 +491,8 @@ class PostgresSaver(BasePostgresSaver):
             while True:
                 stage1_params: list[Any] = []
                 for ch in channels:
-                    stage1_params.extend([ch, ch])
+                    # ver_i, blob channel, blob version, inline_i
+                    stage1_params.extend([ch, ch, ch, ch])
                 stage1_params.extend(
                     [thread_id, checkpoint_ns, cursor, cursor, _DELTA_PAGE_SIZE]
                 )
@@ -502,16 +505,19 @@ class PostgresSaver(BasePostgresSaver):
                     channels,
                     parent_of,
                     ver_by_i_by_cid,
-                    hs_by_i_by_cid,
+                    hb_by_i_by_cid,
+                    inline_by_i_by_cid,
                 )
                 self._try_advance_walks(
                     checkpoint_id,
                     channels,
                     parent_of,
                     ver_by_i_by_cid,
-                    hs_by_i_by_cid,
+                    hb_by_i_by_cid,
+                    inline_by_i_by_cid,
                     chain_by_ch,
                     seed_ver_by_ch,
+                    seed_inline_by_ch,
                     walk_cursor_by_ch,
                     seeded,
                 )
@@ -546,6 +552,7 @@ class PostgresSaver(BasePostgresSaver):
             channels=channels,
             chain_by_ch=chain_by_ch,
             seed_ver_by_ch=seed_ver_by_ch,
+            seed_inline_by_ch=seed_inline_by_ch,
             stage2_rows=cast("list[_DeltaStage2Row]", stage2_rows),
         )
 

libs/checkpoint-postgres/langgraph/checkpoint/postgres/aio.py

@@ -426,9 +426,11 @@ class AsyncPostgresSaver(BasePostgresSaver):
         stage1_sql = _build_delta_stage1_sql(channels, paged=True)
         parent_of: dict[str, str | None] = {}
         ver_by_i_by_cid: list[dict[str, str | None]] = [{} for _ in channels]
-        hs_by_i_by_cid: list[dict[str, bool]] = [{} for _ in channels]
+        hb_by_i_by_cid: list[dict[str, bool]] = [{} for _ in channels]
+        inline_by_i_by_cid: list[dict[str, Any]] = [{} for _ in channels]
         chain_by_ch: dict[str, list[str]] = {ch: [] for ch in channels}
         seed_ver_by_ch: dict[str, str | None] = {ch: None for ch in channels}
+        seed_inline_by_ch: dict[str, Any] = {}
         walk_cursor_by_ch: dict[str, str | None] = {}
         seeded: set[str] = set()
         cursor: str | None = None
@@ -437,7 +439,8 @@ class AsyncPostgresSaver(BasePostgresSaver):
             while True:
                 stage1_params: list[Any] = []
                 for ch in channels:
-                    stage1_params.extend([ch, ch])
+                    # ver_i, blob channel, blob version, inline_i
+                    stage1_params.extend([ch, ch, ch, ch])
                 stage1_params.extend(
                     [thread_id, checkpoint_ns, cursor, cursor, _DELTA_PAGE_SIZE]
                 )
@@ -450,16 +453,19 @@ class AsyncPostgresSaver(BasePostgresSaver):
                     channels,
                     parent_of,
                     ver_by_i_by_cid,
-                    hs_by_i_by_cid,
+                    hb_by_i_by_cid,
+                    inline_by_i_by_cid,
                 )
                 self._try_advance_walks(
                     checkpoint_id,
                     channels,
                     parent_of,
                     ver_by_i_by_cid,
-                    hs_by_i_by_cid,
+                    hb_by_i_by_cid,
+                    inline_by_i_by_cid,
                     chain_by_ch,
                     seed_ver_by_ch,
+                    seed_inline_by_ch,
                     walk_cursor_by_ch,
                     seeded,
                 )
@@ -490,6 +496,7 @@ class AsyncPostgresSaver(BasePostgresSaver):
             channels=channels,
             chain_by_ch=chain_by_ch,
             seed_ver_by_ch=seed_ver_by_ch,
+            seed_inline_by_ch=seed_inline_by_ch,
             stage2_rows=cast("list[_DeltaStage2Row]", stage2_rows),
         )
 
@@ -573,7 +580,7 @@ class AsyncPostgresSaver(BasePostgresSaver):
         while True:
             try:
                 yield asyncio.run_coroutine_threadsafe(
-                    anext(aiter_),  # type: ignore[arg-type]  # noqa: F821
+                    anext(aiter_),  # type: ignore[arg-type]
                     self.loop,
                 ).result()
             except StopAsyncIteration:

libs/checkpoint-postgres/langgraph/checkpoint/postgres/base.py

@@ -199,27 +199,68 @@ class _DeltaStage2Row(TypedDict, total=False):
 
 
 def _build_delta_stage1_sql(channels: Sequence[str], *, paged: bool) -> str:
-    """Build stage 1 SQL with 2K parallel JSONB key lookups.
+    """Build stage 1 SQL with K parallel version lookups + seed probes.
 
     For channels=["messages", "files"] (with `paged=True`) the result is::
 
         SELECT checkpoint_id, parent_checkpoint_id,
                checkpoint -> 'channel_versions' ->> %s AS ver_0,
-               (checkpoint -> 'channel_values' -> %s) IS NOT NULL AS hs_0,
+               EXISTS (SELECT 1 FROM checkpoint_blobs b0
+                       WHERE b0.thread_id = checkpoints.thread_id
+                         AND b0.checkpoint_ns = checkpoints.checkpoint_ns
+                         AND b0.channel = %s
+                         AND b0.version = checkpoint -> 'channel_versions' ->> %s
+                         AND b0.type <> 'empty') AS hb_0,
+               checkpoint -> 'channel_values' -> %s AS inline_0,
                checkpoint -> 'channel_versions' ->> %s AS ver_1,
-               (checkpoint -> 'channel_values' -> %s) IS NOT NULL AS hs_1
+               EXISTS (...) AS hb_1,
+               checkpoint -> 'channel_values' -> %s AS inline_1
         FROM checkpoints
         WHERE thread_id = %s AND checkpoint_ns = %s
           AND (%s::text IS NULL OR checkpoint_id < %s)
         ORDER BY checkpoint_id DESC
         LIMIT %s
 
-    Channel names are passed as `%s` parameters (safe from SQL injection).
-    Only the column aliases `ver_i` / `hs_i` are interpolated into the
-    SQL string (i is bounded by len(channels) and uses safe identifiers).
+    A stored value for a channel lives in one of two places, because `put`
+    splits them:
 
-    Caller must extend params with `[ch_0, ch_0, ch_1, ch_1, ...,
-    thread_id, ns, cursor, cursor, page_size]` when `paged=True`.
+    * **blob** — non-primitive values (and `_DeltaSnapshot`) are moved to
+      `checkpoint_blobs`. `hb_i` ("has blob") probes for one. The probe hits
+      that table's primary key `(thread_id, checkpoint_ns, channel, version)`
+      exactly, so it is an index lookup per row per channel.
+    * **inline** — `None`, `str`, `int`, `float` and `bool` stay in the
+      checkpoint's own `channel_values` and get no blob row at all. `inline_i`
+      returns that value.
+
+    Testing only for a key in `channel_values` (the previous approach) missed
+    blob-stored plain values, since `put` leaves an inline marker there for
+    `_DeltaSnapshot` but not for a plain value — which is what a thread
+    migrated from a pre-delta channel type leaves behind. Probing only the
+    blobs table would conversely miss inline primitives. Both are needed, and
+    the caller treats "either present" as the seed.
+
+    `hb_i` also disambiguates the two: for a `_DeltaSnapshot`, `inline_i` is the
+    literal `true` marker rather than the value, so a blob must win over an
+    inline reading whenever one exists. That ordering is what makes a genuine
+    inline `true` (a bool channel) distinguishable from the marker.
+
+    The `type <> 'empty'` predicate mirrors the check stage 2 already applies
+    when resolving the seed blob. `put` does not currently produce `empty` rows
+    on this path — `blob_versions` is filtered to keys present in
+    `channel_values`, so `_dump_blobs`' empty branch is unreachable from it —
+    but without the predicate the two stages could disagree: stage 1 would
+    terminate the walk on a row stage 2 then discards, yielding no seed *and* a
+    truncated write chain, which is the failure this function exists to avoid.
+
+    Channel names are passed as `%s` parameters (safe from SQL injection).
+    Only the column aliases `ver_i` / `hb_i` / `inline_i` and the subquery alias
+    `b{i}` are interpolated into the SQL string (i is bounded by len(channels)
+    and uses safe identifiers).
+
+    Caller must extend params with `[ch_0 x4, ch_1 x4, ..., thread_id, ns,
+    cursor, cursor, page_size]` when `paged=True` — four per channel: the
+    version lookup, the blob's channel, the version the blob must match, and the
+    inline lookup.
 
     When `paged=False`, the WHERE has no cursor predicate and there's no
     LIMIT/ORDER BY — kept as a non-public helper for tests/diagnostics.
@@ -228,7 +269,13 @@ def _build_delta_stage1_sql(channels: Sequence[str], *, paged: bool) -> str:
     for i in range(len(channels)):
         cols.append(
             f"checkpoint -> 'channel_versions' ->> %s AS ver_{i}, "
-            f"(checkpoint -> 'channel_values' -> %s) IS NOT NULL AS hs_{i}"
+            f"EXISTS (SELECT 1 FROM checkpoint_blobs b{i} "
+            f"WHERE b{i}.thread_id = checkpoints.thread_id "
+            f"AND b{i}.checkpoint_ns = checkpoints.checkpoint_ns "
+            f"AND b{i}.channel = %s "
+            f"AND b{i}.version = checkpoint -> 'channel_versions' ->> %s "
+            f"AND b{i}.type <> 'empty') AS hb_{i}, "
+            f"checkpoint -> 'channel_values' -> %s AS inline_{i}"
         )
     sql = (
         "SELECT checkpoint_id, parent_checkpoint_id, "
@@ -342,7 +389,8 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
         channels: Sequence[str],
         parent_of: dict[str, str | None],
         ver_by_i_by_cid: list[dict[str, str | None]],
-        hs_by_i_by_cid: list[dict[str, bool]],
+        hb_by_i_by_cid: list[dict[str, bool]],
+        inline_by_i_by_cid: list[dict[str, Any]],
     ) -> str | None:
         """Fold one stage-1 page into the running walk-state mappings.
 
@@ -356,7 +404,8 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
             parent_of[cid] = cast("str | None", r["parent_checkpoint_id"])
             for i in range(len(channels)):
                 ver_by_i_by_cid[i][cid] = cast("str | None", r.get(f"ver_{i}"))
-                hs_by_i_by_cid[i][cid] = bool(r.get(f"hs_{i}"))
+                hb_by_i_by_cid[i][cid] = bool(r.get(f"hb_{i}"))
+                inline_by_i_by_cid[i][cid] = r.get(f"inline_{i}")
             # Rows are DESC; the last one is the smallest cid in the page.
             oldest = cid
         return oldest
@@ -367,9 +416,11 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
         channels: Sequence[str],
         parent_of: Mapping[str, str | None],
         ver_by_i_by_cid: Sequence[Mapping[str, str | None]],
-        hs_by_i_by_cid: Sequence[Mapping[str, bool]],
+        hb_by_i_by_cid: Sequence[Mapping[str, bool]],
+        inline_by_i_by_cid: Sequence[Mapping[str, Any]],
         chain_by_ch: dict[str, list[str]],
         seed_ver_by_ch: dict[str, str | None],
+        seed_inline_by_ch: dict[str, Any],
         walk_cursor_by_ch: dict[str, str | None],
         seeded: set[str],
     ) -> None:
@@ -377,14 +428,15 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
 
         Uses the partial `parent_of` map accumulated so far. A walk stops
         either because:
-          (a) it found a snapshot for its channel (channel becomes seeded),
+          (a) it found a stored value for its channel — a blob or an inline
+              primitive (channel becomes seeded),
           (b) it reached a real root (parent_of[cid] is None — fully
               materialized at this point), or
           (c) the next ancestor cid isn't in `parent_of` yet (waiting for
               a later page; the cursor stays put).
 
-        Mutates `chain_by_ch`, `seed_ver_by_ch`, `walk_cursor_by_ch`, and
-        `seeded` in place.
+        Mutates `chain_by_ch`, `seed_ver_by_ch`, `seed_inline_by_ch`,
+        `walk_cursor_by_ch`, and `seeded` in place.
         """
         for i, ch in enumerate(channels):
             if ch in seeded:
@@ -394,15 +446,22 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
                 walk_cursor_by_ch[ch] = parent_of.get(target_id)
             cur_cid = walk_cursor_by_ch[ch]
             ch_chain = chain_by_ch[ch]
-            hs_i = hs_by_i_by_cid[i]
+            hb_i = hb_by_i_by_cid[i]
+            inline_i = inline_by_i_by_cid[i]
             ver_i = ver_by_i_by_cid[i]
             while cur_cid is not None:
                 if cur_cid not in parent_of:
                     # Need more pages to continue this walk.
                     break
                 ch_chain.append(cur_cid)
-                if hs_i.get(cur_cid, False):
+                has_blob = hb_i.get(cur_cid, False)
+                inline = inline_i.get(cur_cid)
+                if has_blob or inline is not None:
+                    # A blob wins: for a `_DeltaSnapshot` the inline reading is
+                    # the `true` marker, not the value.
                     seed_ver_by_ch[ch] = ver_i.get(cur_cid)
+                    if not has_blob:
+                        seed_inline_by_ch[ch] = inline
                     seeded.add(ch)
                     cur_cid = None
                     break
@@ -415,16 +474,23 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
         channels: Sequence[str],
         chain_by_ch: Mapping[str, list[str]],
         seed_ver_by_ch: Mapping[str, str | None],
+        seed_inline_by_ch: Mapping[str, Any],
         stage2_rows: Sequence[_DeltaStage2Row],
     ) -> dict[str, DeltaChannelHistory]:
         """Demux stage 2 rows per channel; produce per-channel histories.
 
         stage2_rows carry `channel` on every row. We build per-channel
         `writes_by_cid` and per-channel `seed_blob` dicts, then assemble
-        a `DeltaChannelHistory` per requested channel. The `seed` key is omitted
-        when the walk reached root with no snapshot found, or when the
-        seed blob is sentinel "empty" — in both cases the consumer treats
-        absence as "start empty".
+        a `DeltaChannelHistory` per requested channel.
+
+        A seed comes from the blobs table when the walk found one there, and
+        otherwise from `seed_inline_by_ch` — `put` keeps `None`, `str`, `int`,
+        `float` and `bool` values in the checkpoint's own `channel_values` with
+        no blob row, so those never appear in `stage2_rows`.
+
+        The `seed` key is omitted when the walk reached root without finding a
+        stored value, or when the seed blob is sentinel "empty" — in both cases
+        the consumer treats absence as "start empty".
         """
         # writes_by_ch_by_cid[channel][cid] = list of (type, blob, task_id, idx)
         writes_by_ch_by_cid: dict[str, dict[str, list[tuple[str, bytes, str, int]]]] = {
@@ -473,6 +539,10 @@ class BasePostgresSaver(BaseCheckpointSaver[str]):
                 blob = seed_blob_by_ver.get((ch, seed_version))
                 if blob is not None and blob[0] != "empty":
                     entry["seed"] = self.serde.loads_typed(blob)
+                elif ch in seed_inline_by_ch:
+                    # Inline primitive: stored in the checkpoint, not the blobs
+                    # table, so stage 2 never returned a row for it.
+                    entry["seed"] = seed_inline_by_ch[ch]
             result[ch] = entry
         return result
 

libs/checkpoint-postgres/langgraph/checkpoint/postgres/shallow.py

@@ -334,7 +334,7 @@ class ShallowPostgresSaver(BasePostgresSaver):
             >>> checkpoint_tuple = memory.get_tuple(config)
             >>> print(checkpoint_tuple)
             CheckpointTuple(...)
-        """  # noqa
+        """
         thread_id = config["configurable"]["thread_id"]
         checkpoint_ns = config["configurable"].get("checkpoint_ns", "")
         args = (thread_id, checkpoint_ns)
@@ -885,7 +885,7 @@ class AsyncShallowPostgresSaver(BasePostgresSaver):
         while True:
             try:
                 yield asyncio.run_coroutine_threadsafe(
-                    anext(aiter_),  # type: ignore[arg-type]  # noqa: F821
+                    anext(aiter_),  # type: ignore[arg-type]
                     self.loop,
                 ).result()
             except StopAsyncIteration:

libs/checkpoint-postgres/langgraph/store/postgres/base.py

@@ -4,6 +4,7 @@ import asyncio
 import concurrent.futures
 import json
 import logging
+import re
 import threading
 from collections import defaultdict
 from collections.abc import Callable, Iterable, Iterator, Sequence
@@ -238,6 +239,12 @@ class BasePostgresStore(Generic[C]):
     conn: C
     _deserializer: Callable[[bytes | orjson.Fragment], dict[str, Any]] | None
     index_config: PostgresIndexConfig | None
+    ttl_config: TTLConfig | None
+
+    @property
+    def _omit_expired(self) -> bool:
+        """Whether expired-but-unswept rows should be filtered from reads."""
+        return bool(self.ttl_config and self.ttl_config.get("omit_expired"))
 
     def _get_batch_GET_ops_queries(
         self,
@@ -258,12 +265,17 @@ class BasePostgresStore(Generic[C]):
             namespace_groups[op.namespace].append((idx, op.key))
             refresh_ttls[op.namespace].append(op.refresh_ttl)
 
+        omit_expired = self._omit_expired
+        expiry_clause = (
+            "AND (s.expires_at IS NULL OR s.expires_at > NOW())" if omit_expired else ""
+        )
+
         results = []
         for namespace, items in namespace_groups.items():
             _, keys = zip(*items, strict=False)
             this_refresh_ttls = refresh_ttls[namespace]
 
-            query = """
+            query = f"""
                 WITH passed_in AS (
                     SELECT unnest(%s::text[]) AS key,
                         unnest(%s::bool[])  AS do_refresh
@@ -276,12 +288,14 @@ class BasePostgresStore(Generic[C]):
                     AND s.key    = p.key
                     AND p.do_refresh = TRUE
                     AND s.ttl_minutes IS NOT NULL
+                    {expiry_clause}
                     RETURNING s.key
                 )
                 SELECT s.key, s.value, s.created_at, s.updated_at
                 FROM store s
                 JOIN passed_in p ON s.key = p.key
                 WHERE s.prefix = %s
+                {expiry_clause}
             """
             ns_text = _namespace_to_text(namespace)
             params = (
@@ -422,6 +436,13 @@ class BasePostgresStore(Generic[C]):
         - embedding_requests: list of (original_index_in_search_ops, text_query)
         """
 
+        omit_expired = self._omit_expired
+        search_expiry_clause = (
+            "AND (store.expires_at IS NULL OR store.expires_at > NOW())"
+            if omit_expired
+            else ""
+        )
+
         queries = []
         embedding_requests = []
         for idx, (_, op) in enumerate(search_ops):
@@ -443,8 +464,9 @@ class BasePostgresStore(Generic[C]):
             ns_condition = "TRUE"
             ns_param: Sequence[str] | None = None
             if op.namespace_prefix:
-                ns_condition = "store.prefix LIKE %s"
-                ns_param = (f"{_namespace_to_text(op.namespace_prefix)}%",)
+                ns_condition, ns_param = _namespace_prefix_condition(
+                    op.namespace_prefix
+                )
             else:
                 ns_param = ()
 
@@ -491,7 +513,7 @@ class BasePostgresStore(Generic[C]):
                             {score_operator} AS neg_score
                         FROM store
                         JOIN store_vectors sv ON store.prefix = sv.prefix AND store.key = sv.key
-                        WHERE {ns_condition} {extra_filters}
+                        WHERE {ns_condition} {extra_filters} {search_expiry_clause}
                         ORDER BY {score_operator} ASC
                         LIMIT %s
                     """
@@ -527,7 +549,7 @@ class BasePostgresStore(Generic[C]):
                 base_query = f"""
                         SELECT store.prefix, store.key, store.value, store.created_at, store.updated_at, NULL AS score
                         FROM store
-                        WHERE {ns_condition} {extra_filters}
+                        WHERE {ns_condition} {extra_filters} {search_expiry_clause}
                         ORDER BY store.updated_at DESC
                         LIMIT %s
                         OFFSET %s
@@ -591,18 +613,23 @@ class BasePostgresStore(Generic[C]):
             """
             params: list[Any] = [op.max_depth, op.max_depth]
 
+            omit_expired = self._omit_expired
             conditions = []
+            if omit_expired:
+                conditions.append("(expires_at IS NULL OR expires_at > NOW())")
             if op.match_conditions:
                 for condition in op.match_conditions:
-                    if condition.match_type == "prefix":
-                        conditions.append("prefix LIKE %s")
+                    if condition.match_type in ("prefix", "suffix"):
+                        if not condition.path:
+                            # An empty path constrains nothing; skipping keeps it a
+                            # no-op rather than emitting a pattern that matches no
+                            # namespace at all.
+                            continue
+                        conditions.append("prefix ~ %s")
                         params.append(
-                            f"{_namespace_to_text(condition.path, handle_wildcards=True)}%"
-                        )
-                    elif condition.match_type == "suffix":
-                        conditions.append("prefix LIKE %s")
-                        params.append(
-                            f"%{_namespace_to_text(condition.path, handle_wildcards=True)}"
+                            _namespace_match_pattern(
+                                condition.path, condition.match_type
+                            )
                         )
                     else:
                         logger.warning(
@@ -1248,15 +1275,59 @@ def _get_index_params(store: Any) -> tuple[str, dict[str, Any]]:
     return kind, sanitized
 
 
-def _namespace_to_text(
-    namespace: tuple[str, ...], handle_wildcards: bool = False
-) -> str:
+def _namespace_to_text(namespace: tuple[str, ...]) -> str:
     """Convert namespace tuple to text string."""
-    if handle_wildcards:
-        namespace = tuple("%" if val == "*" else val for val in namespace)
     return ".".join(namespace)
 
 
+def _escape_like_literal(text: str) -> str:
+    """Escape LIKE metacharacters so `text` is matched literally.
+
+    Namespace labels may contain `_` and `%`, which would otherwise act as
+    wildcards: `("user_1",)` would match `("userX1",)`. Backslash is escaped
+    first so it cannot escape the following character. Requires an explicit
+    `ESCAPE '\\'` clause on the pattern.
+    """
+    return text.replace("\\", "\\\\").replace("%", "\\%").replace("_", "\\_")
+
+
+def _namespace_prefix_condition(namespace_prefix: tuple[str, ...]) -> tuple[str, tuple]:
+    """Build the SQL scoping a search to a namespace and its descendants.
+
+    Matches the namespace exactly or requires the `.` separator before any
+    remainder, so a prefix of `("foo",)` does not also match `("foobar",)`.
+
+    Both arms stay index-friendly: equality on the `(prefix, key)` primary key,
+    the anchored LIKE on the `prefix text_pattern_ops` index.
+
+    Only the LIKE arm is escaped -- equality does not interpret metacharacters,
+    so escaping it would stop `("user_1",)` from matching itself.
+    """
+    path = _namespace_to_text(namespace_prefix)
+    condition = r"(store.prefix = %s OR store.prefix LIKE %s ESCAPE '\')"
+    return condition, (path, f"{_escape_like_literal(path)}.%")
+
+
+def _namespace_match_pattern(path: tuple[str, ...], match_type: str) -> str:
+    """Build a POSIX regex matching the dot-joined prefix on whole segments.
+
+    Needed because `LIKE` cannot express "any character except the separator".
+    Matches how `InMemoryStore` compares namespaces element-wise.
+
+    `*` matches exactly one segment. Prefix matches stay open-ended but must end
+    on a separator; suffix matches anchor at the end and begin on one.
+
+    Examples:
+        prefix ("uid", "*", "alice") -> ^uid\\.[^.]+\\.alice(\\.|\\Z)
+        suffix ("alice",)            -> (^|\\.)alice\\Z
+    """
+    segments = ("[^.]+" if part == "*" else re.escape(part) for part in path)
+    body = r"\.".join(segments)
+    if match_type == "suffix":
+        return rf"(^|\.){body}\Z"
+    return rf"^{body}(\.|\Z)"
+
+
 def _row_to_item(
     namespace: tuple[str, ...],
     row: Row,

libs/checkpoint-postgres/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint-postgres"
-version = "3.1.0a4"
+version = "3.1.2"
 description = "Library with a Postgres implementation of LangGraph checkpoint saver."
 authors = []
 requires-python = ">=3.10"
@@ -12,7 +12,7 @@ readme = "README.md"
 license = "MIT"
 license-files = ['LICENSE']
 dependencies = [
-  "langgraph-checkpoint>=4.1.0a4,<5.0.0",
+  "langgraph-checkpoint>=4.1.0,<5.0.0",
   "orjson>=3.11.5",
   "psycopg>=3.2.0",
   "psycopg-pool>=3.2.0",
@@ -32,12 +32,13 @@ test = [
   "pytest-mock",
   "psycopg[binary]",
   "langgraph-checkpoint",
+  "langgraph-checkpoint-conformance",
   "pytest-watcher",
 ]
 lint = [
   "ruff",
   "codespell",
-  "mypy",
+  "ty",
 ]
 dev = [
   {include-group = "test"},
@@ -49,6 +50,7 @@ default-groups = ['dev']
 
 [tool.uv.sources]
 langgraph-checkpoint = { path = "../checkpoint", editable = true }
+langgraph-checkpoint-conformance = { path = "../checkpoint-conformance", editable = true }
 
 [tool.hatch.build.targets.wheel]
 include = ["langgraph"]
@@ -64,20 +66,22 @@ lint.select = [
   "UP", # pyupgrade
   "B",  # flake8-bugbear
   "I",  # isort
+  "PLC0415",  # import-outside-top-level
+  "RUF100",  # unused noqa directive
   "UP", # pyupgrade
 ]
 lint.ignore = ["E501", "B008"]
 target-version = "py310"
 
-[tool.mypy]
-# https://mypy.readthedocs.io/en/stable/config_file.html
-disallow_untyped_defs = "True"
-explicit_package_bases = "True"
-warn_no_return = "False"
-warn_unused_ignores = "True"
-warn_redundant_casts = "True"
-allow_redefinition = "True"
-disable_error_code = "typeddict-item, return-value"
+[tool.ty.rules]
+invalid-argument-type = "ignore"
+invalid-assignment = "ignore"
+invalid-key = "ignore"
+invalid-return-type = "ignore"
+invalid-typed-dict-field = "ignore"
+invalid-yield = "ignore"
+no-matching-overload = "ignore"
+unused-type-ignore-comment = "ignore"
 
 [tool.pytest-watcher]
 now = true

libs/checkpoint-postgres/tests/test_async.py

@@ -380,13 +380,15 @@ async def test_delta_channel_chain_reconstruction(saver_name: str) -> None:
         "langgraph.channels.delta", reason="langgraph core not installed"
     )
 
-    from typing import Annotated
+    # Deferred on purpose: langgraph core is not a test dependency of this
+    # package, so these must stay behind the importorskip above.
+    from typing import Annotated  # noqa: PLC0415
 
-    from langchain_core.messages import AIMessage, HumanMessage
-    from langgraph.channels.delta import DeltaChannel
-    from langgraph.graph import START, StateGraph
-    from langgraph.graph.message import _messages_delta_reducer
-    from typing_extensions import TypedDict
+    from langchain_core.messages import AIMessage, HumanMessage  # noqa: PLC0415
+    from langgraph.channels.delta import DeltaChannel  # noqa: PLC0415
+    from langgraph.graph import START, StateGraph  # noqa: PLC0415
+    from langgraph.graph.message import _messages_delta_reducer  # noqa: PLC0415
+    from typing_extensions import TypedDict  # noqa: PLC0415
 
     class State(TypedDict):
         messages: Annotated[list, DeltaChannel(_messages_delta_reducer)]

libs/checkpoint-postgres/tests/test_async_store.py

@@ -739,3 +739,135 @@ async def test_store_ttl(store):
     # Now has been (TTL_SECONDS-2)*2 > TTL_SECONDS + TTL_SECONDS/2
     results = await store.asearch(ns, query="bar", refresh_ttl=False)
     assert len(results) == 0
+
+
+async def _aexpire_now(
+    store: AsyncPostgresStore, ns: tuple[str, ...], key: str
+) -> None:
+    """Backdate a row's expires_at into the past without deleting it (unswept)."""
+    async with store._cursor() as cur:
+        await cur.execute(
+            "UPDATE store SET expires_at = NOW() - INTERVAL '1 minute' "
+            "WHERE prefix = %s AND key = %s",
+            (".".join(ns), key),
+        )
+
+
+async def _arow_exists(
+    store: AsyncPostgresStore, ns: tuple[str, ...], key: str
+) -> bool:
+    async with store._cursor() as cur:
+        await cur.execute(
+            "SELECT COUNT(*) AS n FROM store WHERE prefix = %s AND key = %s",
+            (".".join(ns), key),
+        )
+        return (await cur.fetchone())["n"] == 1
+
+
+async def _astored_expires_at(store: AsyncPostgresStore, ns: tuple[str, ...], key: str):
+    async with store._cursor() as cur:
+        await cur.execute(
+            "SELECT expires_at FROM store WHERE prefix = %s AND key = %s",
+            (".".join(ns), key),
+        )
+        return (await cur.fetchone())["expires_at"]
+
+
+async def test_omit_expired_filters_read_paths(store: AsyncPostgresStore) -> None:
+    await store.stop_ttl_sweeper()  # deterministic: no background deletion
+    store.ttl_config["omit_expired"] = True
+
+    expired_ns = ("omit", "expired")
+    control_ns = ("omit", "control")
+    await store.aput(expired_ns, "e", {"data": "gone"}, ttl=TTL_MINUTES)
+    await store.aput(control_ns, "c", {"data": "keep"}, ttl=None)
+    await _aexpire_now(store, expired_ns, "e")
+
+    # The row is expired but physically still present (unswept).
+    assert await _arow_exists(store, expired_ns, "e")
+
+    # aget omits it; the never-expiring control is still returned.
+    assert await store.aget(expired_ns, "e") is None
+    assert await store.aget(control_ns, "c") is not None
+
+    # asearch omits it but returns the control.
+    assert await store.asearch(expired_ns) == []
+    assert [i.key for i in await store.asearch(control_ns)] == ["c"]
+
+    # alist_namespaces drops the expired-only namespace, keeps the control.
+    namespaces = await store.alist_namespaces(prefix=("omit",))
+    assert expired_ns not in namespaces
+    assert control_ns in namespaces
+
+
+@pytest.mark.parametrize("omit", [None, False], ids=["default", "explicit-false"])
+async def test_omit_expired_disabled_preserves_expired_rows(
+    store: AsyncPostgresStore, omit
+) -> None:
+    await store.stop_ttl_sweeper()
+    if omit is not None:
+        store.ttl_config["omit_expired"] = omit
+
+    ns = ("keep",)
+    await store.aput(ns, "k", {"data": "still-here"}, ttl=TTL_MINUTES)
+    await _aexpire_now(store, ns, "k")
+
+    assert await store.aget(ns, "k", refresh_ttl=False) is not None
+    assert [i.key for i in await store.asearch(ns, refresh_ttl=False)] == ["k"]
+    assert ns in await store.alist_namespaces(prefix=("keep",))
+
+
+async def test_omit_expired_refresh_ttl_only_refreshes_live_rows(
+    store: AsyncPostgresStore,
+) -> None:
+    await store.stop_ttl_sweeper()
+    store.ttl_config["omit_expired"] = True
+
+    ns = ("refresh",)
+    await store.aput(ns, "expired", {"n": 0}, ttl=TTL_MINUTES)
+    await store.aput(ns, "live_get", {"n": 1}, ttl=TTL_MINUTES)
+    await store.aput(ns, "live_search", {"n": 2}, ttl=TTL_MINUTES)
+    await _aexpire_now(store, ns, "expired")
+
+    expired_before = await _astored_expires_at(store, ns, "expired")
+    get_before = await _astored_expires_at(store, ns, "live_get")
+    search_before = await _astored_expires_at(store, ns, "live_search")
+
+    # refresh_ttl=True must NOT resurrect the expired row (via aget or asearch)...
+    assert await store.aget(ns, "expired", refresh_ttl=True) is None
+    live_keys = [i.key for i in await store.asearch(ns, refresh_ttl=True)]
+    assert "expired" not in live_keys
+    assert await _astored_expires_at(store, ns, "expired") == expired_before
+
+    # ...but must still extend the live rows that were read.
+    assert await store.aget(ns, "live_get", refresh_ttl=True) is not None
+    assert await _astored_expires_at(store, ns, "live_get") > get_before
+    assert await _astored_expires_at(store, ns, "live_search") > search_before
+
+
+async def test_omit_expired_search_pagination(store: AsyncPostgresStore) -> None:
+    await store.stop_ttl_sweeper()
+    store.ttl_config["omit_expired"] = True
+
+    ns = ("page",)
+    for k in ("a", "b", "c"):
+        await store.aput(ns, k, {"k": k}, ttl=TTL_MINUTES)
+    await store.aput(ns, "expired", {"k": "x"}, ttl=TTL_MINUTES)
+    await _aexpire_now(store, ns, "expired")
+
+    seconds_ago = {"a": 1, "expired": 2, "b": 3, "c": 4}
+    # updated_at DESC orders these a, expired, b, c, so the expired row sits inside
+    # the first limit=2 window. Correct (pre-LIMIT) filtering yields live pages
+    # [a, b] then [c]; post-LIMIT filtering would underfill page 1 to just [a].
+    async with store._cursor() as cur:
+        for key, secs in seconds_ago.items():
+            await cur.execute(
+                "UPDATE store SET updated_at = NOW() - (%s * INTERVAL '1 second') "
+                "WHERE prefix = %s AND key = %s",
+                (secs, ".".join(ns), key),
+            )
+
+    page1 = await store.asearch(ns, limit=2, offset=0)
+    page2 = await store.asearch(ns, limit=2, offset=2)
+    assert [i.key for i in page1] == ["a", "b"]
+    assert [i.key for i in page2] == ["c"]

libs/checkpoint-postgres/tests/test_conformance_delta.py

@@ -0,0 +1,30 @@
+"""Run delta-channel conformance capabilities against AsyncPostgresSaver."""
+
+from __future__ import annotations
+
+import pytest
+from langgraph.checkpoint.conformance import validate
+from langgraph.checkpoint.conformance.initializer import checkpointer_test
+
+from langgraph.checkpoint.postgres.aio import AsyncPostgresSaver
+from tests.conftest import DEFAULT_URI
+
+
+@pytest.mark.asyncio
+async def test_delta_channel_conformance():
+    @checkpointer_test(name="AsyncPostgresSaver")
+    async def postgres_saver():
+        async with AsyncPostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+            await saver.setup()
+            yield saver
+
+    report = await validate(
+        postgres_saver,
+        capabilities={
+            "delta_channel_history",
+        },
+    )
+    for cap, result in report.results.items():
+        if result.passed is False:
+            details = "\n".join(result.failures or [])
+            pytest.fail(f"Capability {cap} failed:\n{details}")

libs/checkpoint-postgres/tests/test_delta_plain_value_seed.py

@@ -0,0 +1,204 @@
+"""Seed detection for `DeltaChannel` histories on Postgres.
+
+`put` splits stored values in two: primitives stay inline in the checkpoint's
+`channel_values`, everything else moves to `checkpoint_blobs`. Only
+`_DeltaSnapshot` leaves an inline marker behind when it moves, so the stage-1
+walk has to check both places — a blob probe alone misses inline primitives, and
+an inline-key check alone missed blob-stored plain values, which is what a thread
+migrated from a pre-delta channel type leaves behind. See #8534.
+"""
+
+from __future__ import annotations
+
+from typing import Any
+from uuid import uuid4
+
+import pytest
+from langgraph.checkpoint.base import Checkpoint, empty_checkpoint
+from langgraph.checkpoint.base.id import uuid6
+from langgraph.checkpoint.serde.types import _DeltaSnapshot
+
+from langgraph.checkpoint.postgres.aio import AsyncPostgresSaver
+from tests.conftest import DEFAULT_URI
+
+CHANNEL = "items"
+
+
+async def _build_chain(saver: AsyncPostgresSaver, seed_value: Any) -> tuple[str, dict]:
+    """Store `seed_value` at step 1, then two steps that store nothing.
+
+    Every step carries a write so the walk has something to collect.
+    Returns `(thread_id, head_config)`.
+    """
+    thread_id = str(uuid4())
+    parent: dict | None = None
+    for step in range(4):
+        config: dict = {"configurable": {"thread_id": thread_id, "checkpoint_ns": ""}}
+        if parent is not None:
+            config["configurable"]["checkpoint_id"] = parent["configurable"][
+                "checkpoint_id"
+            ]
+        cp: Checkpoint = empty_checkpoint()
+        cp["id"] = str(uuid6(clock_seq=step))
+        new_versions: dict[str, Any] = {}
+        if step == 1:
+            cp["channel_values"][CHANNEL] = seed_value
+            cp["channel_versions"][CHANNEL] = "v1"
+            new_versions[CHANNEL] = "v1"
+        else:
+            cp["channel_versions"][CHANNEL] = f"v{step}"
+        parent = await saver.aput(
+            config, cp, {"source": "loop", "step": step, "parents": {}}, new_versions
+        )
+        await saver.aput_writes(parent, [(CHANNEL, f"w{step}")], str(uuid4()))
+    assert parent is not None
+    return thread_id, parent
+
+
+@pytest.mark.asyncio
+async def test_plain_value_seed_is_found() -> None:
+    """A pre-delta plain value must be located as the seed.
+
+    Before #8534 the walk ran to the root and returned no seed, which happens
+    to reconstruct correctly for additive reducers while costing an
+    O(thread length) replay on every read.
+    """
+    async with AsyncPostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+        await saver.setup()
+        _, head = await _build_chain(saver, [10, 20])
+
+        result = await saver.aget_delta_channel_history(config=head, channels=[CHANNEL])
+        entry = result[CHANNEL]
+
+        assert entry.get("seed") == [10, 20], (
+            f"expected the plain value as seed, got {entry.get('seed', '<missing>')}"
+        )
+        # Only the writes between the seed and the head's parent replay: step 1
+        # (the seed's own) and step 2. Step 0 is older than the seed, step 3 is
+        # pending at the head.
+        assert [w[2] for w in entry["writes"]] == ["w1", "w2"]
+
+
+@pytest.mark.asyncio
+async def test_delta_snapshot_seed_is_found() -> None:
+    """The `_DeltaSnapshot` path keeps working, so both seed kinds agree."""
+    async with AsyncPostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+        await saver.setup()
+        _, head = await _build_chain(saver, _DeltaSnapshot([10, 20]))
+
+        result = await saver.aget_delta_channel_history(config=head, channels=[CHANNEL])
+        entry = result[CHANNEL]
+
+        seed = entry.get("seed")
+        assert isinstance(seed, _DeltaSnapshot), f"expected a snapshot, got {seed!r}"
+        assert seed.value == [10, 20]
+        assert [w[2] for w in entry["writes"]] == ["w1", "w2"]
+
+
+@pytest.mark.asyncio
+async def test_version_bump_without_a_value_does_not_hide_an_older_seed() -> None:
+    """A delta-era step bumps `channel_versions` without storing a value, so no
+    blob exists for that version. The probe must report no seed there and keep
+    walking rather than stopping at a version it cannot resolve.
+
+    Step 0 holds the real value; step 1 bumps the version with nothing stored.
+    Walking back from the head has to pass step 1 to reach step 0.
+    """
+    async with AsyncPostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+        await saver.setup()
+        thread_id = str(uuid4())
+        parent: dict | None = None
+        for step in range(4):
+            config: dict = {
+                "configurable": {"thread_id": thread_id, "checkpoint_ns": ""}
+            }
+            if parent is not None:
+                config["configurable"]["checkpoint_id"] = parent["configurable"][
+                    "checkpoint_id"
+                ]
+            cp: Checkpoint = empty_checkpoint()
+            cp["id"] = str(uuid6(clock_seq=step))
+            new_versions: dict[str, Any] = {}
+            if step == 0:
+                cp["channel_values"][CHANNEL] = [10, 20]
+                cp["channel_versions"][CHANNEL] = "v0"
+                new_versions[CHANNEL] = "v0"
+            elif step == 1:
+                # Version bumped, value absent -> no blob row written.
+                cp["channel_versions"][CHANNEL] = "v1"
+                new_versions[CHANNEL] = "v1"
+            else:
+                cp["channel_versions"][CHANNEL] = "v1"
+            parent = await saver.aput(
+                config,
+                cp,
+                {"source": "loop", "step": step, "parents": {}},
+                new_versions,
+            )
+            await saver.aput_writes(parent, [(CHANNEL, f"w{step}")], str(uuid4()))
+        assert parent is not None
+
+        result = await saver.aget_delta_channel_history(
+            config=parent, channels=[CHANNEL]
+        )
+        entry = result[CHANNEL]
+
+        assert entry.get("seed") == [10, 20], (
+            "the walk stopped at the empty blob instead of reaching the real "
+            f"value at step 0; got {entry.get('seed', '<missing>')}"
+        )
+        assert [w[2] for w in entry["writes"]] == ["w0", "w1", "w2"]
+
+
+@pytest.mark.asyncio
+async def test_inline_primitive_seed_is_found() -> None:
+    """`put` keeps `None`, `str`, `int`, `float` and `bool` in the checkpoint's
+    own `channel_values` with no blob row, so a blob probe alone cannot see
+    them. Stage 1 reads the inline value too and uses it when there is no blob.
+    """
+    async with AsyncPostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+        await saver.setup()
+        for seed_value in (42, "x", 3.5, None):
+            _, head = await _build_chain(saver, seed_value)
+            entry = (
+                await saver.aget_delta_channel_history(config=head, channels=[CHANNEL])
+            )[CHANNEL]
+            if seed_value is None:
+                # A JSON null is indistinguishable from "no value stored", so
+                # the walk keeps going; replay from empty is the correct result.
+                assert "seed" not in entry
+            else:
+                assert entry.get("seed") == seed_value, (
+                    f"inline {type(seed_value).__name__} seed not found: "
+                    f"{entry.get('seed', '<missing>')!r}"
+                )
+                assert [w[2] for w in entry["writes"]] == ["w1", "w2"]
+
+
+@pytest.mark.asyncio
+async def test_inline_true_is_not_read_as_a_snapshot_marker() -> None:
+    """`put` inlines a literal `true` in `channel_values` as the marker for a
+    `_DeltaSnapshot`, which is also what a genuine `bool` channel holding
+    `True` looks like. A blob exists only in the snapshot case, so preferring
+    the blob keeps the two apart.
+    """
+    async with AsyncPostgresSaver.from_conn_string(DEFAULT_URI) as saver:
+        await saver.setup()
+
+        _, head = await _build_chain(saver, True)
+        entry = (
+            await saver.aget_delta_channel_history(config=head, channels=[CHANNEL])
+        )[CHANNEL]
+        assert entry.get("seed") is True, (
+            f"a real inline True must survive, got {entry.get('seed', '<missing>')!r}"
+        )
+
+        _, snap_head = await _build_chain(saver, _DeltaSnapshot(True))
+        snap_entry = (
+            await saver.aget_delta_channel_history(config=snap_head, channels=[CHANNEL])
+        )[CHANNEL]
+        seed = snap_entry.get("seed")
+        assert isinstance(seed, _DeltaSnapshot), (
+            f"the marker must resolve to the blob, not inline true; got {seed!r}"
+        )
+        assert seed.value is True

libs/checkpoint-postgres/tests/test_store.py

@@ -20,6 +20,10 @@ from langgraph.store.base import (
 from psycopg import Connection
 
 from langgraph.store.postgres import PostgresStore
+from langgraph.store.postgres.base import (
+    _escape_like_literal,
+    _namespace_match_pattern,
+)
 from tests.conftest import (
     DEFAULT_URI,
     VECTOR_TYPES,
@@ -326,6 +330,127 @@ def test_list_namespaces(store) -> None:
         store.delete(namespace, "dummy")
 
 
+def test_escape_like_literal() -> None:
+    assert _escape_like_literal("users.alice") == "users.alice"
+    assert _escape_like_literal("user_1") == r"user\_1"
+    assert _escape_like_literal("100%") == r"100\%"
+    assert _escape_like_literal("a\\b") == "a\\\\b"
+    assert _escape_like_literal("") == ""
+
+
+def test_namespace_match_pattern() -> None:
+    assert _namespace_match_pattern(("foo",), "prefix") == r"^foo(\.|\Z)"
+    assert _namespace_match_pattern(("uid", "users"), "prefix") == r"^uid\.users(\.|\Z)"
+    assert (
+        _namespace_match_pattern(("uid", "*", "alice"), "prefix")
+        == r"^uid\.[^.]+\.alice(\.|\Z)"
+    )
+    assert _namespace_match_pattern(("alice",), "suffix") == r"(^|\.)alice\Z"
+
+    # Regex metacharacters in a label are quoted, not interpreted.
+    pattern = _namespace_match_pattern(("a.b+c",), "prefix")
+    assert re.match(pattern, "a.b+c.child")
+    assert not re.match(pattern, "axbbbc")
+
+
+def test_search_namespace_segment_boundary(store) -> None:
+    """Prefix scoping must stop at namespace segment boundaries.
+
+    Namespaces are stored dot-joined, so matching the raw text also returns
+    siblings sharing leading characters. Callers isolate tenants by namespace,
+    so prefix-shaped ids (1 vs 12) would cross-read.
+    """
+    for namespace in [
+        ("foo",),
+        ("foo", "child"),
+        ("foo", "child", "deep"),
+        ("foobar",),
+        ("foobar", "baz"),
+        ("foo2",),
+    ]:
+        store.put(namespace, "k", {"v": 1})
+
+    def _namespaces(prefix: tuple[str, ...]) -> set[tuple[str, ...]]:
+        return {item.namespace for item in store.search(prefix, limit=100)}
+
+    assert _namespaces(("foo",)) == {
+        ("foo",),
+        ("foo", "child"),
+        ("foo", "child", "deep"),
+    }
+    # The sibling scope is independent, not merely narrower.
+    assert _namespaces(("foobar",)) == {("foobar",), ("foobar", "baz")}
+    assert _namespaces(("foo", "child")) == {("foo", "child"), ("foo", "child", "deep")}
+    assert _namespaces(("foo2",)) == {("foo2",)}
+    assert _namespaces(("fo",)) == set()
+
+
+def test_search_empty_prefix_is_unconstrained(store) -> None:
+    """An empty prefix constrains nothing and must return every namespace."""
+    for namespace in [("a",), ("b", "c"), ("d", "e", "f")]:
+        store.put(namespace, "k", {"v": 1})
+
+    assert {item.namespace for item in store.search((), limit=100)} == {
+        ("a",),
+        ("b", "c"),
+        ("d", "e", "f"),
+    }
+
+
+def test_search_namespace_like_metacharacters(store) -> None:
+    """`_` and `%` are legal namespace labels, not LIKE wildcards."""
+    for namespace in [
+        ("user_1",),
+        ("user_1", "child"),
+        ("userX1",),
+        ("a%b",),
+        ("axxb",),
+    ]:
+        store.put(namespace, "k", {"v": 1})
+
+    def _namespaces(prefix: tuple[str, ...]) -> set[tuple[str, ...]]:
+        return {item.namespace for item in store.search(prefix, limit=100)}
+
+    # Also asserts the namespace still matches itself, which catches escaping
+    # the equality arm by mistake.
+    assert _namespaces(("user_1",)) == {("user_1",), ("user_1", "child")}
+    assert _namespaces(("a%b",)) == {("a%b",)}
+
+
+def test_list_namespaces_segment_boundary(store) -> None:
+    for namespace in [
+        ("foo",),
+        ("foo", "child"),
+        ("foobar",),
+        ("foobar", "baz"),
+        ("uid", "users", "alice"),
+        ("uid", "users", "malice"),
+        ("uid", "a", "b", "alice"),
+    ]:
+        store.put(namespace, "k", {"v": 1})
+
+    assert set(store.list_namespaces(prefix=["foo"], limit=100)) == {
+        ("foo",),
+        ("foo", "child"),
+    }
+    # Suffix must align to a segment: "malice" does not end with the "alice"
+    # segment.
+    assert set(store.list_namespaces(suffix=["alice"], limit=100)) == {
+        ("uid", "users", "alice"),
+        ("uid", "a", "b", "alice"),
+    }
+    # "*" spans exactly one segment.
+    assert set(store.list_namespaces(prefix=["uid", "*", "alice"], limit=100)) == {
+        ("uid", "users", "alice"),
+    }
+    # Prefix matching stays open-ended across depth.
+    assert set(store.list_namespaces(prefix=["uid"], limit=100)) == {
+        ("uid", "users", "alice"),
+        ("uid", "users", "malice"),
+        ("uid", "a", "b", "alice"),
+    }
+
+
 def test_search(store) -> None:
     # Create test data
     test_data = [
@@ -863,6 +988,133 @@ def test_store_ttl(store):
     assert len(res) == 0
 
 
+def _expire_now(store: PostgresStore, ns: tuple[str, ...], key: str) -> None:
+    """Backdate a row's expires_at into the past without deleting it (unswept)."""
+    with store._cursor() as cur:
+        cur.execute(
+            "UPDATE store SET expires_at = NOW() - INTERVAL '1 minute' "
+            "WHERE prefix = %s AND key = %s",
+            (".".join(ns), key),
+        )
+
+
+def _row_exists(store: PostgresStore, ns: tuple[str, ...], key: str) -> bool:
+    with store._cursor() as cur:
+        cur.execute(
+            "SELECT COUNT(*) AS n FROM store WHERE prefix = %s AND key = %s",
+            (".".join(ns), key),
+        )
+        return cur.fetchone()["n"] == 1
+
+
+def _stored_expires_at(store: PostgresStore, ns: tuple[str, ...], key: str):
+    with store._cursor() as cur:
+        cur.execute(
+            "SELECT expires_at FROM store WHERE prefix = %s AND key = %s",
+            (".".join(ns), key),
+        )
+        return cur.fetchone()["expires_at"]
+
+
+def test_omit_expired_filters_read_paths(store: PostgresStore) -> None:
+    store.stop_ttl_sweeper()  # deterministic: no background deletion
+    store.ttl_config["omit_expired"] = True
+
+    expired_ns = ("omit", "expired")
+    control_ns = ("omit", "control")
+    store.put(expired_ns, "e", {"data": "gone"}, ttl=TTL_MINUTES)
+    store.put(control_ns, "c", {"data": "keep"}, ttl=None)
+    _expire_now(store, expired_ns, "e")
+
+    # The row is expired but physically still present (unswept).
+    assert _row_exists(store, expired_ns, "e")
+
+    # get omits it; the never-expiring control is still returned.
+    assert store.get(expired_ns, "e") is None
+    assert store.get(control_ns, "c") is not None
+
+    # search omits it but returns the control.
+    assert store.search(expired_ns) == []
+    assert [i.key for i in store.search(control_ns)] == ["c"]
+
+    # list_namespaces drops the expired-only namespace, keeps the control.
+    namespaces = store.list_namespaces(prefix=("omit",))
+    assert expired_ns not in namespaces
+    assert control_ns in namespaces
+
+
+@pytest.mark.parametrize("omit", [None, False], ids=["default", "explicit-false"])
+def test_omit_expired_disabled_preserves_expired_rows(
+    store: PostgresStore, omit
+) -> None:
+    store.stop_ttl_sweeper()
+    if omit is not None:
+        store.ttl_config["omit_expired"] = omit
+
+    ns = ("keep",)
+    store.put(ns, "k", {"data": "still-here"}, ttl=TTL_MINUTES)
+    _expire_now(store, ns, "k")
+
+    assert store.get(ns, "k", refresh_ttl=False) is not None
+    assert [i.key for i in store.search(ns, refresh_ttl=False)] == ["k"]
+    assert ns in store.list_namespaces(prefix=("keep",))
+
+
+def test_omit_expired_refresh_ttl_only_refreshes_live_rows(
+    store: PostgresStore,
+) -> None:
+    store.stop_ttl_sweeper()
+    store.ttl_config["omit_expired"] = True
+
+    ns = ("refresh",)
+    store.put(ns, "expired", {"n": 0}, ttl=TTL_MINUTES)
+    store.put(ns, "live_get", {"n": 1}, ttl=TTL_MINUTES)
+    store.put(ns, "live_search", {"n": 2}, ttl=TTL_MINUTES)
+    _expire_now(store, ns, "expired")
+
+    expired_before = _stored_expires_at(store, ns, "expired")
+    get_before = _stored_expires_at(store, ns, "live_get")
+    search_before = _stored_expires_at(store, ns, "live_search")
+
+    # refresh_ttl=True must NOT resurrect the expired row (via get or search)...
+    assert store.get(ns, "expired", refresh_ttl=True) is None
+    assert "expired" not in [i.key for i in store.search(ns, refresh_ttl=True)]
+    assert _stored_expires_at(store, ns, "expired") == expired_before
+
+    # ...but must still extend the live rows that were read.
+    assert store.get(ns, "live_get", refresh_ttl=True) is not None
+    assert _stored_expires_at(store, ns, "live_get") > get_before
+    assert _stored_expires_at(store, ns, "live_search") > search_before
+
+
+def test_omit_expired_search_pagination(store: PostgresStore) -> None:
+    store.stop_ttl_sweeper()
+    store.ttl_config["omit_expired"] = True
+
+    ns = ("page",)
+    for k in ("a", "b", "c"):
+        store.put(ns, k, {"k": k}, ttl=TTL_MINUTES)
+    store.put(ns, "expired", {"k": "x"}, ttl=TTL_MINUTES)
+    _expire_now(store, ns, "expired")
+
+    seconds_ago = {"a": 1, "expired": 2, "b": 3, "c": 4}
+    # updated_at DESC orders these a, expired, b, c, so the expired row sits inside
+    # the first limit=2 window. Correct (pre-LIMIT) filtering yields live pages
+    # [a, b] then [c]; post-LIMIT filtering would underfill page 1 to just [a].
+    with store._cursor() as cur:
+        for key, secs in seconds_ago.items():
+            cur.execute(
+                "UPDATE store SET updated_at = NOW() - (%s * INTERVAL '1 second') "
+                "WHERE prefix = %s AND key = %s",
+                (secs, ".".join(ns), key),
+            )
+
+    page1 = store.search(ns, limit=2, offset=0)
+    page2 = store.search(ns, limit=2, offset=2)
+    assert [i.key for i in page1] == ["a", "b"]
+    assert [i.key for i in page2] == ["c"]
+
+
 @pytest.mark.parametrize(
     "vector_type,distance_type",
     [
@@ -899,3 +1151,16 @@ def test_non_ascii(
         assert result3[0].key == "3"
         assert result4[0].key == "4"
         assert result5[0].key == "5"
+
+
+def test_namespace_labels_with_trailing_newline(store) -> None:
+    """Labels may contain newlines, and must not match a differently-named label."""
+    store.put(("users", "alice"), "k", {"v": 1})
+    store.put(("users", "alice\n"), "k", {"v": 2})
+
+    assert set(store.list_namespaces(suffix=["alice"], limit=100)) == {
+        ("users", "alice"),
+    }
+    assert set(store.list_namespaces(prefix=["users", "alice"], limit=100)) == {
+        ("users", "alice"),
+    }

libs/checkpoint-sqlite/Makefile

@@ -18,22 +18,19 @@ test_watch:
 
 # Define a variable for Python and notebook files.
 PYTHON_FILES=.
-MYPY_CACHE=.mypy_cache
 lint format: PYTHON_FILES=.
 lint_diff format_diff: PYTHON_FILES=$(shell git diff --name-only --relative --diff-filter=d main . | grep -E '\.py$$|\.ipynb$$')
 lint_package: PYTHON_FILES=langgraph
 lint_tests: PYTHON_FILES=tests
-lint_tests: MYPY_CACHE=.mypy_cache_test
 
 lint lint_diff lint_package lint_tests:
 	uv run ruff check .
 	[ "$(PYTHON_FILES)" = "" ] || uv run ruff format $(PYTHON_FILES) --diff
 	[ "$(PYTHON_FILES)" = "" ] || uv run ruff check --select I $(PYTHON_FILES)
-	[ "$(PYTHON_FILES)" = "" ] || mkdir -p $(MYPY_CACHE)
-	[ "$(PYTHON_FILES)" = "" ] || uv run mypy $(PYTHON_FILES) --cache-dir $(MYPY_CACHE)
+	[ "$(PYTHON_FILES)" = "" ] || uv run ty check $(PYTHON_FILES)
 
 type:
-	mkdir -p $(MYPY_CACHE) && uv run mypy $(PYTHON_FILES) --cache-dir $(MYPY_CACHE)
+	uv run ty check $(PYTHON_FILES)
 
 format format_diff:
 	uv run ruff format $(PYTHON_FILES)

libs/checkpoint-sqlite/README.md

@@ -1,6 +1,26 @@
 # LangGraph SQLite Checkpoint
 
-Implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync and async, via `aiosqlite`)
+[![PyPI - Version](https://img.shields.io/pypi/v/langgraph-checkpoint-sqlite?label=%20)](https://pypi.org/project/langgraph-checkpoint-sqlite/#history)
+[![PyPI - License](https://img.shields.io/pypi/l/langgraph-checkpoint-sqlite)](https://opensource.org/licenses/MIT)
+[![PyPI - Downloads](https://img.shields.io/pepy/dt/langgraph-checkpoint-sqlite)](https://pypistats.org/packages/langgraph-checkpoint-sqlite)
+[![Twitter](https://img.shields.io/twitter/url/https/twitter.com/langchain_oss.svg?style=social&label=Follow%20%40LangChain)](https://x.com/langchain_oss)
+
+To help you ship LangGraph apps to production faster, check out [LangSmith](https://www.langchain.com/langsmith).
+[LangSmith](https://www.langchain.com/langsmith) is a unified developer platform for building, testing, and monitoring LLM applications.
+
+## Quick Install
+
+```bash
+uv add langgraph-checkpoint-sqlite
+```
+
+## 🤔 What is this?
+
+This library provides a SQLite implementation of LangGraph's checkpoint saver, with both sync and async support via `aiosqlite`. Use it when you want LangGraph state persistence backed by SQLite for local development, testing, or lightweight deployments.
+
+## 📖 Documentation
+
+For full documentation, see the [API reference](https://reference.langchain.com/python/langgraph.checkpoint.sqlite). For conceptual guides on persistence and memory, see the [LangGraph Docs](https://docs.langchain.com/oss/python/langgraph/overview).
 
 ## Security
 
@@ -91,3 +111,13 @@ async with AsyncSqliteSaver.from_conn_string(":memory:") as checkpointer:
     # list checkpoints
     [c async for c in checkpointer.alist(read_config)]
 ```
+
+## 📕 Releases & Versioning
+
+See our [Releases](https://docs.langchain.com/oss/python/release-policy) and [Versioning](https://docs.langchain.com/oss/python/versioning) policies.
+
+## 💁 Contributing
+
+As an open-source project in a rapidly developing field, we are extremely open to contributions, whether it be in the form of a new feature, improved infrastructure, or better documentation.
+
+For detailed information on how to contribute, see the [Contributing Guide](https://docs.langchain.com/oss/python/contributing/overview).

libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/__init__.py

@@ -77,7 +77,7 @@ class SqliteSaver(BaseCheckpointSaver[str]):
         >>> result = graph.invoke(3, config)
         >>> graph.get_state(config)
         StateSnapshot(values=4, next=(), config={'configurable': {'thread_id': '1', 'checkpoint_ns': '', 'checkpoint_id': '0c62ca34-ac19-445d-bbb0-5b4984975b2a'}}, parent_config=None)
-    """  # noqa
+    """
 
     conn: sqlite3.Connection
     is_setup: bool
@@ -222,7 +222,7 @@ class SqliteSaver(BaseCheckpointSaver[str]):
             >>> checkpoint_tuple = memory.get_tuple(config)
             >>> print(checkpoint_tuple)
             CheckpointTuple(...)
-        """  # noqa
+        """
         checkpoint_ns = config["configurable"].get("checkpoint_ns", "")
         with self.cursor(transaction=False) as cur:
             # find the latest checkpoint for the thread_id

libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/aio.py

@@ -212,7 +212,7 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
         while True:
             try:
                 yield asyncio.run_coroutine_threadsafe(
-                    anext(aiter_),  # type: ignore[arg-type]  # noqa: F821
+                    anext(aiter_),  # type: ignore[arg-type]
                     self.loop,
                 ).result()
             except StopAsyncIteration:

libs/checkpoint-sqlite/langgraph/store/sqlite/aio.py

@@ -24,11 +24,13 @@ from langgraph.store.base.batch import AsyncBatchedBaseStore
 
 from langgraph.store.sqlite.base import (
     _PLACEHOLDER,
+    NS_MATCH_FUNCTION,
     BaseSqliteStore,
     SqliteIndexConfig,
     _decode_ns_text,
     _ensure_index_config,
     _group_ops,
+    _namespace_match,
     _row_to_item,
     _row_to_search_item,
 )
@@ -150,6 +152,13 @@ class AsyncSqliteStore(AsyncBatchedBaseStore, BaseSqliteStore):
             if self.is_setup:
                 return
 
+            # list_namespaces needs segment-aware matching, which SQLite cannot
+            # express in LIKE or GLOB. Registered here rather than in __init__
+            # because aiosqlite's create_function is a coroutine.
+            await self.conn.create_function(
+                NS_MATCH_FUNCTION, 2, _namespace_match, deterministic=True
+            )
+
             # Create migrations table if it doesn't exist
             await self.conn.execute(
                 """

libs/checkpoint-sqlite/langgraph/store/sqlite/base.py

@@ -93,12 +93,74 @@ class SqliteIndexConfig(IndexConfig):
     pass
 
 
-def _namespace_to_text(
-    namespace: tuple[str, ...], handle_wildcards: bool = False
-) -> str:
+NS_MATCH_FUNCTION = "_langgraph_namespace_match"
+"""SQLite user function backing segment-aware namespace matching.
+
+Registered under a private name rather than overriding `REGEXP`, so a caller's
+own `REGEXP` is left untouched.
+"""
+
+
+def _namespace_match(prefix: str | None, pattern: str) -> int:
+    """Backing implementation of `NS_MATCH_FUNCTION`."""
+    if prefix is None:
+        return 0
+    return 1 if re.search(pattern, prefix) else 0
+
+
+def _escape_glob_literal(text: str) -> str:
+    """Escape GLOB metacharacters so `text` is matched literally.
+
+    GLOB has no `ESCAPE` clause, so metacharacters are wrapped in a character
+    class instead. `]` is literal outside a class and needs no escaping.
+    """
+    return text.replace("[", "[[]").replace("*", "[*]").replace("?", "[?]")
+
+
+def _namespace_prefix_condition(
+    namespace_prefix: tuple[str, ...], column: str = "prefix"
+) -> tuple[str, tuple[str, ...]]:
+    """Build the SQL scoping a search to a namespace and its descendants.
+
+    Matches the namespace exactly or requires the `.` separator before any
+    remainder, so a prefix of `("foo",)` does not also match `("foobar",)`.
+
+    Uses GLOB rather than LIKE because SQLite's LIKE is case-insensitive for
+    ASCII, which would match `("FOO",)` for a prefix of `("foo",)` even though
+    `get`/`put`/`delete` compare with `=` and treat those as distinct.
+
+    An empty prefix is unconstrained and matches every namespace.
+    """
+    if not namespace_prefix:
+        return "TRUE", ()
+    path = _namespace_to_text(namespace_prefix)
+    condition = f"({column} = ? OR {column} GLOB ?)"
+    return condition, (path, f"{_escape_glob_literal(path)}.*")
+
+
+def _namespace_match_pattern(path: tuple[str, ...], match_type: str) -> str:
+    """Build a regex matching the dot-joined prefix on whole namespace segments.
+
+    Needed because neither LIKE nor GLOB can express "any character except the
+    separator": GLOB has character classes but no quantifier, so `[^.]*` still
+    crosses `.`. Matches how `InMemoryStore` compares namespaces element-wise.
+
+    `*` matches exactly one segment. Prefix matches stay open-ended but must end
+    on a separator; suffix matches anchor at the end and begin on one.
+
+    Examples:
+        prefix ("uid", "*", "alice") -> ^uid\\.[^.]+\\.alice(\\.|\\Z)
+        suffix ("alice",)            -> (^|\\.)alice\\Z
+    """
+    segments = ("[^.]+" if part == "*" else re.escape(part) for part in path)
+    body = r"\.".join(segments)
+    if match_type == "suffix":
+        return rf"(^|\.){body}\Z"
+    return rf"^{body}(\.|\Z)"
+
+
+def _namespace_to_text(namespace: tuple[str, ...]) -> str:
     """Convert namespace tuple to text string."""
-    if handle_wildcards:
-        namespace = tuple("%" if val == "*" else val for val in namespace)
     return ".".join(namespace)
 
 
@@ -461,8 +523,11 @@ class BaseSqliteStore:
                     else " AND " + " AND ".join(filter_conditions)
                 )
                 if op.namespace_prefix:
-                    prefix_filter_str = f"WHERE s.prefix LIKE ? {filter_str} "
-                    ns_args: Sequence = (f"{_namespace_to_text(op.namespace_prefix)}%",)
+                    ns_condition, ns_args_tuple = _namespace_prefix_condition(
+                        op.namespace_prefix, column="s.prefix"
+                    )
+                    prefix_filter_str = f"WHERE {ns_condition} {filter_str} "
+                    ns_args: Sequence = ns_args_tuple
                 else:
                     ns_args = ()
                     if filter_str:
@@ -503,12 +568,15 @@ class BaseSqliteStore:
                 ]
             # Regular search branch (no vector search)
             else:
-                base_query = """
+                ns_condition, ns_args_tuple = _namespace_prefix_condition(
+                    op.namespace_prefix
+                )
+                base_query = f"""
                     SELECT prefix, key, value, created_at, updated_at, expires_at, ttl_minutes, NULL as score
                     FROM store
-                    WHERE prefix LIKE ?
+                    WHERE {ns_condition}
                 """
-                params = [f"{_namespace_to_text(op.namespace_prefix)}%"]
+                params = list(ns_args_tuple)
 
                 if filter_conditions:
                     params.extend(filter_params)
@@ -549,16 +617,28 @@ class BaseSqliteStore:
 
             if op.match_conditions:
                 for cond in op.match_conditions:
-                    if cond.match_type == "prefix":
-                        where_clauses.append("prefix LIKE ?")
-                        params.append(
-                            f"{_namespace_to_text(cond.path, handle_wildcards=True)}%"
-                        )
-                    elif cond.match_type == "suffix":
-                        where_clauses.append("prefix LIKE ?")
-                        params.append(
-                            f"%{_namespace_to_text(cond.path, handle_wildcards=True)}"
-                        )
+                    if cond.match_type in ("prefix", "suffix"):
+                        if not cond.path:
+                            # An empty path constrains nothing; skipping keeps it a
+                            # no-op rather than emitting a pattern that matches no
+                            # namespace at all.
+                            continue
+                        if cond.match_type == "prefix" and "*" not in cond.path:
+                            # Equivalent to the anchored pattern, but SQLite can
+                            # satisfy `=` and a trailing-wildcard GLOB from
+                            # store_prefix_idx. The user function is opaque to the
+                            # planner, so it would scan every row and call back
+                            # into Python for each one.
+                            condition, args = _namespace_prefix_condition(
+                                tuple(cond.path)
+                            )
+                            where_clauses.append(condition)
+                            params.extend(args)
+                        else:
+                            where_clauses.append(f"{NS_MATCH_FUNCTION}(prefix, ?) = 1")
+                            params.append(
+                                _namespace_match_pattern(cond.path, cond.match_type)
+                            )
                     else:
                         logger.warning(
                             "Unknown match_type in list_namespaces: %s", cond.match_type
@@ -785,6 +865,9 @@ class SqliteStore(BaseSqliteStore, BaseStore):
         super().__init__()
         self._deserializer = deserializer
         self.conn = conn
+        # Registered here rather than in from_conn_string so a caller-supplied
+        # connection also gets it.
+        conn.create_function(NS_MATCH_FUNCTION, 2, _namespace_match, deterministic=True)
         self.lock = threading.Lock()
         self.is_setup = False
         self.index_config = index

libs/checkpoint-sqlite/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint-sqlite"
-version = "3.1.0a1"
+version = "3.1.1"
 description = "Library with a SQLite implementation of LangGraph checkpoint saver."
 authors = []
 requires-python = ">=3.10"
@@ -12,7 +12,7 @@ readme = "README.md"
 license = "MIT"
 license-files = ['LICENSE']
 dependencies = [
-    "langgraph-checkpoint>=4.1.0a4,<5.0.0",
+    "langgraph-checkpoint>=4.1.0,<5.0.0",
     "aiosqlite>=0.20",
     "sqlite-vec>=0.1.6",
 ]
@@ -30,12 +30,13 @@ test = [
   "pytest-mock",
   "pytest-watcher",
   "langgraph-checkpoint",
+  "langgraph-checkpoint-conformance",
   "pytest-retry>=1.7.0",
 ]
 lint = [
   "ruff",
   "codespell",
-  "mypy",
+  "ty",
 ]
 dev = [
   {include-group = "test"},
@@ -47,6 +48,7 @@ default-groups = ['dev']
 
 [tool.uv.sources]
 langgraph-checkpoint = { path = "../checkpoint", editable = true }
+langgraph-checkpoint-conformance = { path = "../checkpoint-conformance", editable = true }
 
 [tool.hatch.build.targets.wheel]
 include = ["langgraph"]
@@ -62,23 +64,29 @@ lint.select = [
   "UP", # pyupgrade
   "B",  # flake8-bugbear
   "I",  # isort
+  "PLC0415",  # import-outside-top-level
+  "RUF100",  # unused noqa directive
   "UP", # pyupgrade
 ]
 lint.ignore = ["E501", "B008"]
 target-version = "py310"
 
+[tool.ty.rules]
+invalid-argument-type = "ignore"
+invalid-assignment = "ignore"
+invalid-key = "ignore"
+invalid-method-override = "ignore"
+invalid-return-type = "ignore"
+invalid-yield = "ignore"
+not-iterable = "ignore"
+not-subscriptable = "ignore"
+unused-type-ignore-comment = "ignore"
+unresolved-attribute = "ignore"
+unresolved-import = "ignore"
+unsupported-operator = "ignore"
+
 [tool.pytest-watcher]
 now = true
 delay = 0.1
 runner_args = ["--ff", "-v", "--tb", "short"]
 patterns = ["*.py"]
-
-[tool.mypy]
-# https://mypy.readthedocs.io/en/stable/config_file.html
-disallow_untyped_defs = "True"
-explicit_package_bases = "True"
-warn_no_return = "False"
-warn_unused_ignores = "True"
-warn_redundant_casts = "True"
-allow_redefinition = "True"
-disable_error_code = "typeddict-item, return-value"

libs/checkpoint-sqlite/tests/test_async_store.py

@@ -1,4 +1,3 @@
-# mypy: disable-error-code="union-attr,arg-type,index,operator"
 import asyncio
 import os
 import tempfile
@@ -717,3 +716,32 @@ async def test_search_items(
         for ns in test_namespaces:
             key = f"item_{ns[-1]}"
             await store.adelete(ns, key)
+
+
+async def test_async_namespace_segment_boundary(store: AsyncSqliteStore) -> None:
+    """Segment-aware scoping on the async path.
+
+    Also covers that the namespace-match SQLite function is registered on the
+    async connection -- aiosqlite's create_function is a coroutine, so it is
+    registered in setup() rather than __init__.
+    """
+    for namespace in [
+        ("foo",),
+        ("foo", "child"),
+        ("foobar",),
+        ("uid", "users", "alice"),
+        ("uid", "users", "malice"),
+        ("user_1",),
+        ("userX1",),
+    ]:
+        await store.aput(namespace, "k", {"v": 1})
+
+    found = {item.namespace for item in await store.asearch(("foo",), limit=100)}
+    assert found == {("foo",), ("foo", "child")}
+
+    found = {item.namespace for item in await store.asearch(("user_1",), limit=100)}
+    assert found == {("user_1",)}
+
+    assert set(await store.alist_namespaces(suffix=["alice"], limit=100)) == {
+        ("uid", "users", "alice"),
+    }

libs/checkpoint-sqlite/tests/test_conformance_delta.py

@@ -0,0 +1,28 @@
+"""Run delta-channel conformance capabilities against AsyncSqliteSaver."""
+
+from __future__ import annotations
+
+import pytest
+from langgraph.checkpoint.conformance import validate
+from langgraph.checkpoint.conformance.initializer import checkpointer_test
+
+from langgraph.checkpoint.sqlite.aio import AsyncSqliteSaver
+
+
+@pytest.mark.asyncio
+async def test_delta_channel_conformance():
+    @checkpointer_test(name="AsyncSqliteSaver")
+    async def sqlite_saver():
+        async with AsyncSqliteSaver.from_conn_string(":memory:") as saver:
+            yield saver
+
+    report = await validate(
+        sqlite_saver,
+        capabilities={
+            "delta_channel_history",
+        },
+    )
+    for cap, result in report.results.items():
+        if result.passed is False:
+            details = "\n".join(result.failures or [])
+            pytest.fail(f"Capability {cap} failed:\n{details}")

libs/checkpoint-sqlite/tests/test_delta_channel_migration.py

@@ -29,13 +29,13 @@ pytest.importorskip("langgraph.channels.delta", reason="langgraph core not insta
 pytest.importorskip("langgraph.channels.binop", reason="langgraph core not installed")
 pytest.importorskip("langgraph.graph", reason="langgraph core not installed")
 
-from langgraph.channels.binop import BinaryOperatorAggregate  # type: ignore[import-untyped]  # noqa: E402,I001
-from langgraph.channels.delta import DeltaChannel  # type: ignore[import-untyped]  # noqa: E402
-from langgraph.graph import END, START, StateGraph  # type: ignore[import-untyped]  # noqa: E402
-from typing_extensions import TypedDict  # noqa: E402
+from langgraph.channels.binop import BinaryOperatorAggregate  # type: ignore[import-untyped]  # noqa: I001
+from langgraph.channels.delta import DeltaChannel  # type: ignore[import-untyped]
+from langgraph.graph import END, START, StateGraph  # type: ignore[import-untyped]
+from typing_extensions import TypedDict
 
-from langgraph.checkpoint.sqlite import SqliteSaver  # noqa: E402
-from langgraph.checkpoint.sqlite.aio import AsyncSqliteSaver  # noqa: E402
+from langgraph.checkpoint.sqlite import SqliteSaver
+from langgraph.checkpoint.sqlite.aio import AsyncSqliteSaver
 
 pytestmark = pytest.mark.anyio
 

libs/checkpoint-sqlite/tests/test_get_delta_channel_history.py

@@ -32,13 +32,13 @@ from langchain_core.runnables import RunnableConfig
 pytest.importorskip("langgraph.channels.delta", reason="langgraph core not installed")
 pytest.importorskip("langgraph.graph", reason="langgraph core not installed")
 
-from langgraph.channels.delta import DeltaChannel  # type: ignore[import-untyped]  # noqa: E402,I001
-from langgraph.checkpoint.serde.types import _DeltaSnapshot  # noqa: E402
-from langgraph.graph import END, START, StateGraph  # type: ignore[import-untyped]  # noqa: E402
-from typing_extensions import TypedDict  # noqa: E402
+from langgraph.channels.delta import DeltaChannel  # type: ignore[import-untyped]  # noqa: I001
+from langgraph.checkpoint.serde.types import _DeltaSnapshot
+from langgraph.graph import END, START, StateGraph  # type: ignore[import-untyped]
+from typing_extensions import TypedDict
 
-from langgraph.checkpoint.sqlite import SqliteSaver  # noqa: E402
-from langgraph.checkpoint.sqlite.aio import AsyncSqliteSaver  # noqa: E402
+from langgraph.checkpoint.sqlite import SqliteSaver
+from langgraph.checkpoint.sqlite.aio import AsyncSqliteSaver
 
 pytestmark = pytest.mark.anyio
 

libs/checkpoint-sqlite/tests/test_store.py

@@ -1,8 +1,11 @@
-# mypy: disable-error-code="union-attr,arg-type,index,operator"
+import math
 import os
+import random
 import re
 import tempfile
+import time
 import uuid
+from collections import Counter, defaultdict
 from collections.abc import Generator, Iterable
 from contextlib import contextmanager
 from typing import Any, Literal, cast
@@ -19,7 +22,13 @@ from langgraph.store.base import (
 )
 
 from langgraph.store.sqlite import SqliteStore
-from langgraph.store.sqlite.base import SqliteIndexConfig
+from langgraph.store.sqlite.base import (
+    NS_MATCH_FUNCTION,
+    BaseSqliteStore,
+    SqliteIndexConfig,
+    _escape_glob_literal,
+    _namespace_match_pattern,
+)
 
 
 # Local embeddings implementation for testing vector search
@@ -28,10 +37,6 @@ class CharacterEmbeddings(Embeddings):
 
     def __init__(self, dims: int = 50, seed: int = 42):
         """Initialize with embedding dimensions and random seed."""
-        import math
-        import random
-        from collections import defaultdict
-
         self._rng = random.Random(seed)
         self.dims = dims
         # Create projection vector for each character lazily
@@ -43,9 +48,6 @@ class CharacterEmbeddings(Embeddings):
 
     def _embed_one(self, text: str) -> list[float]:
         """Embed a single text."""
-        import math
-        from collections import Counter
-
         counts = Counter(text)
         total = sum(counts.values())
 
@@ -333,8 +335,6 @@ class TestSqliteStore:
 
             # Test update
             # Small delay to ensure the updated timestamp is different
-            import time
-
             time.sleep(0.01)
 
             updated_value = {"title": "Updated Document", "content": "Hello, Updated!"}
@@ -1230,3 +1230,208 @@ def test_non_ascii(
         assert result3[0].key == "3"
         assert result4[0].key == "4"
         assert result5[0].key == "5"
+
+
+def test_escape_glob_literal() -> None:
+    assert _escape_glob_literal("users.alice") == "users.alice"
+    # "_" and "%" are LIKE wildcards but literal in GLOB, so they are left alone.
+    assert _escape_glob_literal("user_1") == "user_1"
+    assert _escape_glob_literal("100%") == "100%"
+    assert _escape_glob_literal("a*b") == "a[*]b"
+    assert _escape_glob_literal("a?b") == "a[?]b"
+    assert _escape_glob_literal("a[b") == "a[[]b"
+
+
+def test_namespace_match_pattern() -> None:
+    assert _namespace_match_pattern(("foo",), "prefix") == r"^foo(\.|\Z)"
+    assert (
+        _namespace_match_pattern(("uid", "*", "alice"), "prefix")
+        == r"^uid\.[^.]+\.alice(\.|\Z)"
+    )
+    assert _namespace_match_pattern(("alice",), "suffix") == r"(^|\.)alice\Z"
+
+
+def test_search_namespace_segment_boundary(store: SqliteStore) -> None:
+    """Prefix scoping must stop at namespace segment boundaries.
+
+    Namespaces are stored dot-joined, so matching the raw text also returns
+    siblings sharing leading characters.
+    """
+    for namespace in [
+        ("foo",),
+        ("foo", "child"),
+        ("foo", "child", "deep"),
+        ("foobar",),
+        ("foobar", "baz"),
+        ("foo2",),
+    ]:
+        store.put(namespace, "k", {"v": 1})
+
+    def _namespaces(prefix: tuple[str, ...]) -> set[tuple[str, ...]]:
+        return {item.namespace for item in store.search(prefix, limit=100)}
+
+    assert _namespaces(("foo",)) == {
+        ("foo",),
+        ("foo", "child"),
+        ("foo", "child", "deep"),
+    }
+    # The sibling scope is independent, not merely narrower.
+    assert _namespaces(("foobar",)) == {("foobar",), ("foobar", "baz")}
+    assert _namespaces(("foo2",)) == {("foo2",)}
+    assert _namespaces(("fo",)) == set()
+
+
+def test_search_namespace_wildcard_chars_are_literal(store: SqliteStore) -> None:
+    """LIKE and GLOB metacharacters in labels must be matched literally."""
+    for namespace in [
+        ("user_1",),
+        ("user_1", "child"),
+        ("userX1",),
+        ("a%b",),
+        ("axxb",),
+        ("star*",),
+        ("starX",),
+    ]:
+        store.put(namespace, "k", {"v": 1})
+
+    def _namespaces(prefix: tuple[str, ...]) -> set[tuple[str, ...]]:
+        return {item.namespace for item in store.search(prefix, limit=100)}
+
+    # Also asserts each namespace still matches itself, which catches escaping
+    # the equality arm by mistake.
+    assert _namespaces(("user_1",)) == {("user_1",), ("user_1", "child")}
+    assert _namespaces(("a%b",)) == {("a%b",)}
+    assert _namespaces(("star*",)) == {("star*",)}
+
+
+def test_search_namespace_is_case_sensitive(store: SqliteStore) -> None:
+    """Search must agree with get/put, which compare namespaces with `=`.
+
+    SQLite's LIKE is case-insensitive for ASCII, so matching with it conflated
+    namespaces that every other operation treats as distinct.
+    """
+    store.put(("Foo",), "k", {"v": "upper"})
+    store.put(("foo",), "k", {"v": "lower"})
+
+    assert {item.namespace for item in store.search(("foo",), limit=100)} == {("foo",)}
+    assert {item.namespace for item in store.search(("Foo",), limit=100)} == {("Foo",)}
+
+
+def test_list_namespaces_segment_boundary(store: SqliteStore) -> None:
+    for namespace in [
+        ("foo",),
+        ("foo", "child"),
+        ("foobar",),
+        ("foobar", "baz"),
+        ("uid", "users", "alice"),
+        ("uid", "users", "malice"),
+        ("uid", "a", "b", "alice"),
+    ]:
+        store.put(namespace, "k", {"v": 1})
+
+    assert set(store.list_namespaces(prefix=["foo"], limit=100)) == {
+        ("foo",),
+        ("foo", "child"),
+    }
+    # Suffix must align to a segment: "malice" does not end with the "alice"
+    # segment.
+    assert set(store.list_namespaces(suffix=["alice"], limit=100)) == {
+        ("uid", "users", "alice"),
+        ("uid", "a", "b", "alice"),
+    }
+    # "*" spans exactly one segment.
+    assert set(store.list_namespaces(prefix=["uid", "*", "alice"], limit=100)) == {
+        ("uid", "users", "alice"),
+    }
+    # Prefix matching stays open-ended across depth.
+    assert set(store.list_namespaces(prefix=["uid"], limit=100)) == {
+        ("uid", "users", "alice"),
+        ("uid", "users", "malice"),
+        ("uid", "a", "b", "alice"),
+    }
+
+
+def test_search_empty_prefix_is_unconstrained(store: SqliteStore) -> None:
+    """An empty prefix constrains nothing and must return every namespace."""
+    for namespace in [("a",), ("b", "c"), ("d", "e", "f")]:
+        store.put(namespace, "k", {"v": 1})
+
+    assert {item.namespace for item in store.search((), limit=100)} == {
+        ("a",),
+        ("b", "c"),
+        ("d", "e", "f"),
+    }
+
+
+def test_namespace_labels_with_trailing_newline(store: SqliteStore) -> None:
+    """Labels may contain newlines, and must not match a differently-named label.
+
+    Python's `$` also matches just before a trailing newline, so the patterns use
+    `\\Z` to anchor at the true end of the string.
+    """
+    store.put(("users", "alice"), "k", {"v": 1})
+    store.put(("users", "alice\n"), "k", {"v": 2})
+
+    assert set(store.list_namespaces(suffix=["alice"], limit=100)) == {
+        ("users", "alice"),
+    }
+    assert set(store.list_namespaces(prefix=["users", "alice"], limit=100)) == {
+        ("users", "alice"),
+    }
+
+
+def test_list_namespaces_prefix_uses_indexable_condition() -> None:
+    """Plain prefixes must use the indexable condition, not the match function.
+
+    A user function is opaque to the query planner, so it scans every row and
+    calls back into Python for each one. Only suffix and wildcard paths, which
+    no SQLite operator can express, need it.
+    """
+    store = BaseSqliteStore()
+
+    def where(match_type: str, path: tuple[str, ...]) -> str:
+        op = ListNamespacesOp(
+            match_conditions=(MatchCondition(match_type=match_type, path=path),),
+            max_depth=None,
+            limit=10,
+            offset=0,
+        )
+        query, _ = store._get_batch_list_namespaces_queries([(0, op)])[0]
+        return " ".join(query.split())
+
+    assert "GLOB" in where("prefix", ("uid", "users"))
+    assert NS_MATCH_FUNCTION not in where("prefix", ("uid", "users"))
+    # A label that merely contains "*" is not the wildcard.
+    assert "GLOB" in where("prefix", ("star*",))
+    # Wildcard and suffix cannot be expressed by GLOB, so they keep the function.
+    assert NS_MATCH_FUNCTION in where("prefix", ("uid", "*", "alice"))
+    assert NS_MATCH_FUNCTION in where("suffix", ("alice",))
+
+
+def test_list_namespaces_metacharacter_labels(store: SqliteStore) -> None:
+    """Metacharacters in labels are literal on both matching paths.
+
+    Plain prefixes take the `= OR GLOB` condition and wildcard/suffix paths take
+    the regex function, so escaping has to hold in two different syntaxes.
+    """
+    pairs = [
+        ("star*", "starX"),
+        ("q?m", "qXm"),
+        ("br[ack]et", "brXacXket"),
+        ("user_1", "userX1"),
+        ("a%b", "axxb"),
+        ("plus+", "plusX"),
+    ]
+    for label, decoy in pairs:
+        store.put((label,), "k", {"v": 1})
+        store.put((decoy,), "k", {"v": 1})
+        store.put((label, "child"), "k", {"v": 1})
+
+    for label, decoy in pairs:
+        found = set(store.list_namespaces(prefix=[label], limit=100))
+        assert found == {(label,), (label, "child")}
+        # The decoy differs only where the metacharacter would have matched.
+        assert (decoy,) not in found
+        assert set(store.list_namespaces(prefix=[label, "child"], limit=100)) == {
+            (label, "child"),
+        }

libs/checkpoint-sqlite/uv.lock

@@ -147,11 +147,11 @@ wheels = [
 
 [[package]]
 name = "codespell"
-version = "2.4.2"
+version = "2.4.3"
 source = { registry = "https://pypi.org/simple" }
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+]
+
 [[package]]
 name = "xxhash"
 version = "3.6.0"

libs/checkpoint/Makefile

@@ -18,22 +18,19 @@ test_watch:
 
 # Define a variable for Python and notebook files.
 PYTHON_FILES=.
-MYPY_CACHE=.mypy_cache
 lint format: PYTHON_FILES=.
 lint_diff format_diff: PYTHON_FILES=$(shell git diff --name-only --relative --diff-filter=d main . | grep -E '\.py$$|\.ipynb$$')
 lint_package: PYTHON_FILES=langgraph
 lint_tests: PYTHON_FILES=tests
-lint_tests: MYPY_CACHE=.mypy_cache_test
 
 lint lint_diff lint_package lint_tests:
 	uv run ruff check .
 	[ "$(PYTHON_FILES)" = "" ] || uv run ruff format $(PYTHON_FILES) --diff
 	[ "$(PYTHON_FILES)" = "" ] || uv run ruff check --select I $(PYTHON_FILES)
-	[ "$(PYTHON_FILES)" = "" ] || mkdir -p $(MYPY_CACHE)
-	[ "$(PYTHON_FILES)" = "" ] || uv run mypy $(PYTHON_FILES) --cache-dir $(MYPY_CACHE)
+	[ "$(PYTHON_FILES)" = "" ] || uv run ty check $(PYTHON_FILES)
 
 type:
-	mkdir -p $(MYPY_CACHE) && uv run mypy $(PYTHON_FILES) --cache-dir $(MYPY_CACHE)
+	uv run ty check $(PYTHON_FILES)
 
 format format_diff:
 	uv run ruff format $(PYTHON_FILES)

libs/checkpoint/README.md

@@ -1,6 +1,26 @@
 # LangGraph Checkpoint
 
-This library defines the base interface for LangGraph checkpointers. Checkpointers provide a persistence layer for LangGraph. They allow you to interact with and manage the graph's state. When you use a graph with a checkpointer, the checkpointer saves a _checkpoint_ of the graph state at every superstep, enabling several powerful capabilities like human-in-the-loop, "memory" between interactions and more.
+[![PyPI - Version](https://img.shields.io/pypi/v/langgraph-checkpoint?label=%20)](https://pypi.org/project/langgraph-checkpoint/#history)
+[![PyPI - License](https://img.shields.io/pypi/l/langgraph-checkpoint)](https://opensource.org/licenses/MIT)
+[![PyPI - Downloads](https://img.shields.io/pepy/dt/langgraph-checkpoint)](https://pypistats.org/packages/langgraph-checkpoint)
+[![Twitter](https://img.shields.io/twitter/url/https/twitter.com/langchain_oss.svg?style=social&label=Follow%20%40LangChain)](https://x.com/langchain_oss)
+
+To help you ship LangGraph apps to production faster, check out [LangSmith](https://www.langchain.com/langsmith).
+[LangSmith](https://www.langchain.com/langsmith) is a unified developer platform for building, testing, and monitoring LLM applications.
+
+## Quick Install
+
+```bash
+uv add langgraph-checkpoint
+```
+
+## 🤔 What is this?
+
+This library defines the base interface for LangGraph checkpointers. Checkpointers provide a persistence layer for LangGraph: they save graph state at every superstep, enabling human-in-the-loop, memory between interactions, durable execution, and more.
+
+## 📖 Documentation
+
+For full documentation, see the [API reference](https://reference.langchain.com/python/langgraph.checkpoint). For conceptual guides on persistence and memory, see the [LangGraph Docs](https://docs.langchain.com/oss/python/langgraph/overview).
 
 ## Key concepts
 
@@ -24,7 +44,7 @@ You must pass these when invoking the graph as part of the configurable part of
 
 ### Serde
 
-`langgraph_checkpoint` also defines protocol for serialization/deserialization (serde) and provides an default implementation (`langgraph.checkpoint.serde.jsonplus.JsonPlusSerializer`) that handles a wide variety of types, including LangChain and LangGraph primitives, datetimes, enums and more.
+`langgraph-checkpoint` also defines protocol for serialization/deserialization (serde) and provides a default implementation (`langgraph.checkpoint.serde.jsonplus.JsonPlusSerializer`) that handles a wide variety of types, including LangChain and LangGraph primitives, datetimes, enums and more.
 
 > [!IMPORTANT]
 > **Checkpoint deserialization security:** By default the serializer allows any Python type found in checkpoint data. New applications should set the environment variable `LANGGRAPH_STRICT_MSGPACK=true` or pass an explicit `allowed_msgpack_modules` list to `JsonPlusSerializer` to restrict deserialization to known-safe types.
@@ -89,3 +109,13 @@ checkpointer.get(read_config)
 # list checkpoints
 list(checkpointer.list(read_config))
 ```
+
+## 📕 Releases & Versioning
+
+See our [Releases](https://docs.langchain.com/oss/python/release-policy) and [Versioning](https://docs.langchain.com/oss/python/versioning) policies.
+
+## 💁 Contributing
+
+As an open-source project in a rapidly developing field, we are extremely open to contributions, whether it be in the form of a new feature, improved infrastructure, or better documentation.
+
+For detailed information on how to contribute, see the [Contributing Guide](https://docs.langchain.com/oss/python/contributing/overview).

libs/checkpoint/langgraph/checkpoint/base/__init__.py

@@ -60,20 +60,29 @@ class CheckpointMetadata(TypedDict, total=False):
     """
     run_id: str
     """The ID of the run that created this checkpoint."""
-    delta_updates_since_snapshot: dict[str, int]
-    """Per-channel update count since the last `_DeltaSnapshot` was written.
+    counters_since_delta_snapshot: dict[str, tuple[int, int]]
+    """Per-channel counters since the last `_DeltaSnapshot` was written.
 
     !!! warning "Beta"
 
         This metadata field backs `DeltaChannel` (beta). The key name and
         contents may change while the delta-channel design stabilizes.
 
-    Maps channel name → number of supersteps that wrote to this channel
-    since its last snapshot blob. Used by `pregel.create_checkpoint` to
-    decide when to write the next snapshot (when the count reaches the
-    channel's `snapshot_frequency`, snapshot fires and the count resets
-    to 0). Absent on threads that don't use delta channels. Version-format
-    independent — works for int, float, and string version schemes.
+    Maps channel name -> `(updates, supersteps)`:
+
+    - index 0 (`updates`): number of supersteps that wrote to this channel
+      since its last snapshot blob.
+    - index 1 (`supersteps`): total supersteps elapsed since this channel's
+      last snapshot, regardless of whether the channel was written.
+
+    A snapshot fires when EITHER `updates >= ch.snapshot_frequency` OR
+    `supersteps >= DELTA_MAX_SUPERSTEPS_SINCE_SNAPSHOT` (system-wide bound,
+    default 5000, env `LANGGRAPH_DELTA_MAX_SUPERSTEPS_SINCE_SNAPSHOT`).
+    The supersteps bound prevents unbounded ancestor walks on threads where
+    a delta channel exists but is no longer being updated.
+
+    Absent on threads that don't use delta channels. Persisted as a
+    2-element list in JSON (no native tuple).
     """
 
 
@@ -327,6 +336,14 @@ class BaseCheckpointSaver(Generic[V]):
 
         Args:
             run_ids: The run IDs whose checkpoints should be deleted.
+
+        !!! warning "DeltaChannel"
+
+            Deleting a run that produced ancestor `checkpoint_writes` — or
+            the only `_DeltaSnapshot` blob — for a still-live thread will
+            break reconstruction of any `DeltaChannel` whose history
+            depended on those rows. See the `DeltaChannel` note on `prune`
+            for safe-recovery strategies.
         """
         raise NotImplementedError
 
@@ -340,6 +357,17 @@ class BaseCheckpointSaver(Generic[V]):
         Args:
             source_thread_id: The thread ID to copy from.
             target_thread_id: The thread ID to copy to.
+
+        !!! warning "DeltaChannel"
+
+            Implementations must copy the **complete** parent chain (all
+            ancestor checkpoints and their `checkpoint_writes`) — copying
+            only the head checkpoint will leave the target thread with
+            `DeltaChannel` state that cannot be reconstructed (no path back
+            to a `_DeltaSnapshot` ancestor). Equivalently, the copy must
+            include enough ancestors that every `DeltaChannel`-backed key
+            has either a `_DeltaSnapshot` in `channel_values` somewhere in
+            the chain, or a complete write history back to the chain root.
         """
         raise NotImplementedError
 
@@ -355,6 +383,34 @@ class BaseCheckpointSaver(Generic[V]):
             thread_ids: The thread IDs to prune.
             strategy: The pruning strategy. `"keep_latest"` retains only the most
                 recent checkpoint per namespace. `"delete"` removes all checkpoints.
+
+        !!! warning "DeltaChannel"
+
+            Custom implementations must be `DeltaChannel`-aware. `DeltaChannel`
+            stores only a sentinel in `channel_values` for non-snapshot steps;
+            reconstruction walks the parent chain via
+            `get_delta_channel_history`, accumulating rows from
+            `checkpoint_writes` until it reaches an ancestor whose
+            `channel_values` contains a `_DeltaSnapshot` blob (written every
+            `snapshot_frequency` updates).
+
+            A naive `"keep_latest"` that drops intermediate checkpoints and
+            their writes can sever that chain: the surviving "latest"
+            checkpoint is rarely a snapshot point itself, so its delta
+            channels would silently reconstruct as empty (no error raised —
+            `get_delta_channel_history` simply returns no `seed`). Safe
+            options when the graph uses `DeltaChannel`:
+
+            * Walk back from each kept checkpoint and preserve every
+              ancestor (plus its `checkpoint_writes`) up to the nearest one
+              whose `channel_values` already contains a `_DeltaSnapshot` for
+              every `DeltaChannel`-backed key.
+            * Force a fresh snapshot on the kept checkpoint before deleting
+              ancestors — rewrite `channel_values[k] = _DeltaSnapshot(value)`
+              for each delta channel `k` (resolving `value` via the existing
+              ancestor walk first), then prune.
+            * Skip pruning threads whose graph uses `DeltaChannel` until one
+              of the above is implemented.
         """
         raise NotImplementedError
 
@@ -471,6 +527,13 @@ class BaseCheckpointSaver(Generic[V]):
 
         Args:
             run_ids: The run IDs whose checkpoints should be deleted.
+
+        !!! warning "DeltaChannel"
+
+            See `delete_for_runs` — deleting rows a still-live thread's
+            `DeltaChannel` reconstruction depends on (writes between the
+            head and its nearest `_DeltaSnapshot` ancestor) will silently
+            corrupt that channel's state.
         """
         raise NotImplementedError
 
@@ -484,6 +547,13 @@ class BaseCheckpointSaver(Generic[V]):
         Args:
             source_thread_id: The thread ID to copy from.
             target_thread_id: The thread ID to copy to.
+
+        !!! warning "DeltaChannel"
+
+            See `copy_thread` — the copy must carry the complete parent
+            chain (or at least back to a `_DeltaSnapshot` ancestor for every
+            `DeltaChannel`) so the target thread can reconstruct delta
+            state.
         """
         raise NotImplementedError
 
@@ -499,6 +569,13 @@ class BaseCheckpointSaver(Generic[V]):
             thread_ids: The thread IDs to prune.
             strategy: The pruning strategy. `"keep_latest"` retains only the most
                 recent checkpoint per namespace. `"delete"` removes all checkpoints.
+
+        !!! warning "DeltaChannel"
+
+            See `prune` for the full `DeltaChannel` caveat. In short:
+            `"keep_latest"` must not drop ancestor checkpoints / writes that
+            sit between the kept checkpoint and the nearest `_DeltaSnapshot`
+            ancestor, or delta channels will silently reconstruct as empty.
         """
         raise NotImplementedError
 

libs/checkpoint/langgraph/checkpoint/memory/__init__.py

@@ -148,17 +148,16 @@ class InMemorySaver(
         whose stored blob is non-empty. Other channels keep walking until
         they find their own terminator or hit the root.
 
-        Pre-delta plain-value blobs subsume their ancestor's pending
-        writes (the value already includes them); `_DeltaSnapshot` blobs
-        do not (snapshot is the value AT that ancestor, prior to its own
-        pending writes that produce the child).
+        A blob is the value AT its ancestor, prior to the writes stored
+        under that same ancestor (those writes produce its child, which
+        is on the path to the target). This holds for `_DeltaSnapshot`
+        blobs and for pre-delta plain values alike, so the seed
+        ancestor's own writes are always collected. Writes at ancestors
+        older than the seed are subsumed by the seed value and are never
+        reached — the walk terminates there.
         """
         if not channels:
             return {}
-        # Imported lazily to avoid a hard checkpoint→serde-types coupling at
-        # module import; only this override needs the runtime check.
-        from langgraph.checkpoint.serde.types import _DeltaSnapshot
-
         thread_id = config["configurable"]["thread_id"]
         checkpoint_ns = config["configurable"].get("checkpoint_ns", "")
         checkpoint_id = config["configurable"].get("checkpoint_id", "")
@@ -205,11 +204,6 @@ class InMemorySaver(
             ):
                 if ch not in remaining:
                     continue
-                blob_value = blob_value_by_ch.get(ch)
-                if blob_value is not None and not isinstance(
-                    blob_value, _DeltaSnapshot
-                ):
-                    continue
                 collected_by_ch[ch].append(
                     (tid, ch, self.serde.loads_typed(serialized))
                 )

libs/checkpoint/langgraph/checkpoint/serde/jsonplus.py

@@ -44,7 +44,7 @@ if TYPE_CHECKING:
         AllowedMsgpackModules,
     )
 
-LC_REVIVER = Reviver()
+LC_REVIVER = Reviver(allowed_objects="core")
 EMPTY_BYTES = b""
 logger = logging.getLogger(__name__)
 
@@ -157,27 +157,6 @@ class JsonPlusSerializer(SerializerProtocol):
             )
         return clone
 
-    def _encode_constructor_args(
-        self,
-        constructor: Callable | type[Any],
-        *,
-        method: None | str | Sequence[None | str] = None,
-        args: Sequence[Any] | None = None,
-        kwargs: dict[str, Any] | None = None,
-    ) -> dict[str, Any]:
-        out = {
-            "lc": 2,
-            "type": "constructor",
-            "id": (*constructor.__module__.split("."), constructor.__name__),
-        }
-        if method is not None:
-            out["method"] = method
-        if args is not None:
-            out["args"] = args
-        if kwargs is not None:
-            out["kwargs"] = kwargs
-        return out
-
     def _reviver(self, value: dict[str, Any]) -> Any:
         if (
             value.get("lc", None) == 2
@@ -203,45 +182,46 @@ class JsonPlusSerializer(SerializerProtocol):
         self._check_allowed_json_modules(value)
 
         [*module, name] = value["id"]
+        # The `method` field on lc:2 envelopes is intentionally ignored.
+        # Revival is restricted to the default constructor (no `getattr`
+        # dispatch on attacker-influenced names). The framework's own
+        # encoder has not emitted `method=` since the msgpack migration,
+        # and the only legacy emission was `method=(None, "construct")`
+        # for pydantic models, where the first entry (`None`) already
+        # meant "default constructor", which is what we do here.
         try:
             mod = importlib.import_module(".".join(module))
             cls = getattr(mod, name)
-            method = value.get("method")
-            if isinstance(method, str):
-                methods = [getattr(cls, method)]
-            elif isinstance(method, list):
-                methods = [cls if m is None else getattr(cls, m) for m in method]
-            else:
-                methods = [cls]
+            if isclass(cls) and issubclass(cls, BaseException):
+                return None
             args = value.get("args")
             kwargs = value.get("kwargs")
-            for method in methods:
-                try:
-                    if isclass(method) and issubclass(method, BaseException):
-                        return None
-                    if args and kwargs:
-                        return method(*args, **kwargs)
-                    elif args:
-                        return method(*args)
-                    elif kwargs:
-                        return method(**kwargs)
-                    else:
-                        return method()
-                except Exception:
-                    continue
-        except Exception:
+            if args and kwargs:
+                return cls(*args, **kwargs)
+            elif args:
+                return cls(*args)
+            elif kwargs:
+                return cls(**kwargs)
+            else:
+                return cls()
+        except Exception as exc:
+            # Method-field dispatch has been removed (GHSA-fjqc-hq36-qh5p), so
+            # legacy pydantic payloads emitting `method=[None, "construct"]`
+            # no longer fall back to `cls.construct(**kwargs)` when the
+            # default constructor rejects the serialized kwargs. Surface a
+            # one-line warning so operators can spot payloads that now revive
+            # to `None` instead of silently degrading to the raw envelope.
+            logger.warning(
+                "Failed to revive lc:2 envelope %s "
+                "(legacy_method_field=%s, error=%s); returning None",
+                ".".join((*module, name)),
+                "method" in value,
+                type(exc).__name__,
+            )
             return None
 
     def _check_allowed_json_modules(self, value: dict[str, Any]) -> None:
         needed = tuple(value["id"])
-        method = value.get("method")
-        if isinstance(method, list):
-            method_display = ",".join(m or "<init>" for m in method)
-        elif isinstance(method, str):
-            method_display = method
-        else:
-            method_display = "<init>"
-
         dotted = ".".join(needed)
         # Safe types (the same set already allowed for msgpack deserialization) are
         # permitted without an explicit allowlist — they are known-safe LangGraph and
@@ -252,7 +232,7 @@ class JsonPlusSerializer(SerializerProtocol):
 
         if not self._allowed_json_modules:
             raise InvalidModuleError(
-                f"Refused to deserialize JSON constructor: {dotted} (method: {method_display}). "
+                f"Refused to deserialize JSON constructor: {dotted}. "
                 "No allowed_json_modules configured.\n\n"
                 "Unblock with ONE of:\n"
                 f"  • JsonPlusSerializer(allowed_json_modules=[{needed!r}, ...])\n"
@@ -267,7 +247,7 @@ class JsonPlusSerializer(SerializerProtocol):
             return
 
         raise InvalidModuleError(
-            f"Refused to deserialize JSON constructor: {dotted} (method: {method_display}). "
+            f"Refused to deserialize JSON constructor: {dotted}. "
             "Symbol is not in the deserialization allowlist.\n\n"
             "Add exactly this symbol to unblock:\n"
             f"  JsonPlusSerializer(allowed_json_modules=[{needed!r}, ...])\n"

libs/checkpoint/langgraph/store/base/__init__.py

@@ -552,6 +552,14 @@ class TTLConfig(TypedDict, total=False):
     This can be overridden per-operation by explicitly setting `refresh_ttl`.
     Defaults to `True` if not configured.
     """
+    omit_expired: bool
+    """Whether to omit expired items from read operations.
+
+    If `True`, and if the store supports this option, expired items will not be
+    returned by `GET` or `SEARCH`, or included in namespace listings, even before
+    a TTL sweep deletes them.
+    Defaults to `False` if not configured.
+    """
     default_ttl: float | None
     """Default TTL (time-to-live) in minutes for new items.
     

libs/checkpoint/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint"
-version = "4.1.0a4"
+version = "4.2.0"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 authors = []
 requires-python = ">=3.10"
@@ -37,7 +37,7 @@ test = [
 lint = [
   "ruff",
   "codespell",
-  "mypy",
+  "ty",
 ]
 dev = [
   {include-group = "test"},
@@ -59,23 +59,33 @@ lint.select = [
   "UP", # pyupgrade
   "B",  # flake8-bugbear
   "I",  # isort
+  "PLC0415",  # import-outside-top-level
+  "RUF100",  # unused noqa directive
   "UP", # pyupgrade
 ]
 lint.ignore = ["E501", "B008"]
+# PLC0415 (import-outside-top-level) is enforced in tests only. Library code
+# still has deferred imports that have not been reviewed, so it stays exempt
+# for now.
+lint.per-file-ignores = { "langgraph/**" = ["PLC0415"] }
 target-version = "py310"
 
+[tool.ty.rules]
+deprecated = "ignore"
+invalid-argument-type = "ignore"
+invalid-assignment = "ignore"
+invalid-key = "ignore"
+invalid-method-override = "ignore"
+invalid-return-type = "ignore"
+invalid-type-form = "ignore"
+redundant-cast = "ignore"
+unused-type-ignore-comment = "ignore"
+unresolved-attribute = "ignore"
+unresolved-import = "ignore"
+unsupported-operator = "ignore"
+
 [tool.pytest-watcher]
 now = true
 delay = 0.1
 runner_args = ["--ff", "-v", "--tb", "short"]
 patterns = ["*.py"]
-
-[tool.mypy]
-# https://mypy.readthedocs.io/en/stable/config_file.html
-disallow_untyped_defs = "True"
-explicit_package_bases = "True"
-warn_no_return = "False"
-warn_unused_ignores = "True"
-warn_redundant_casts = "True"
-allow_redefinition = "True"
-disable_error_code = "typeddict-item, return-value"

libs/checkpoint/tests/test_conformance_delta.py

@@ -0,0 +1,37 @@
+"""Run delta-channel conformance capabilities against InMemorySaver."""
+
+from __future__ import annotations
+
+import pytest
+
+conformance = pytest.importorskip(
+    "langgraph.checkpoint.conformance",
+    reason="langgraph-checkpoint-conformance not installed",
+)
+
+
+@pytest.mark.asyncio
+async def test_delta_channel_conformance():
+    # Imported inside the test: the module-level importorskip above is what
+    # makes these safe, so they cannot move to the top of the file.
+    from langgraph.checkpoint.conformance import validate  # noqa: PLC0415
+    from langgraph.checkpoint.conformance.initializer import (  # noqa: PLC0415
+        checkpointer_test,
+    )
+
+    from langgraph.checkpoint.memory import InMemorySaver  # noqa: PLC0415
+
+    @checkpointer_test(name="InMemorySaver")
+    async def mem_saver():
+        yield InMemorySaver()
+
+    report = await validate(
+        mem_saver,
+        capabilities={
+            "delta_channel_history",
+        },
+    )
+    for cap, result in report.results.items():
+        if result.passed is False:
+            details = "\n".join(result.failures or [])
+            pytest.fail(f"Capability {cap} failed:\n{details}")

libs/checkpoint/tests/test_encrypted.py

@@ -307,8 +307,6 @@ class TestWithMsgpackAllowlistEncrypted:
             def loads_typed(self, data: tuple[str, bytes]) -> None:
                 return None
 
-        from langgraph.checkpoint.serde.base import CipherProtocol
-
         class DummyCipher(CipherProtocol):
             def encrypt(self, plaintext: bytes) -> tuple[str, bytes]:
                 return "dummy", plaintext

libs/checkpoint/tests/test_jsonplus.py

@@ -1,9 +1,12 @@
 import dataclasses
 import json
 import logging
+import os
 import pathlib
+import pickle
 import re
 import sys
+import tempfile
 import uuid
 from collections import deque
 from datetime import date, datetime, time, timezone
@@ -18,7 +21,7 @@ import ormsgpack
 import pandas as pd
 import pytest
 from langchain_core.documents.base import Document
-from langchain_core.messages import HumanMessage
+from langchain_core.messages import AIMessage, HumanMessage
 from pydantic import BaseModel, SecretStr
 from pydantic.v1 import BaseModel as BaseModelV1
 from pydantic.v1 import SecretStr as SecretStrV1
@@ -341,7 +344,6 @@ def test_lc2_json_safe_type_revives_without_allowlist() -> None:
     constructor dicts. Resuming those threads must reconstruct proper BaseMessage objects
     rather than returning raw dicts that cause MESSAGE_COERCION_FAILURE in add_messages.
     """
-    from langchain_core.messages import AIMessage
 
     serde = JsonPlusSerializer()  # default: _allowed_json_modules=None
 
@@ -398,6 +400,186 @@ def test_deserde_invalid_module() -> None:
     serde.loads_typed(("json", json.dumps(load).encode("utf-8")))
 
 
+def test_lc2_json_method_field_is_ignored() -> None:
+    """The `method` field on lc=2 envelopes is ignored.
+
+    Regression test for GHSA-fjqc-hq36-qh5p: `_revive_lc2` previously resolved
+    `getattr(cls, method)` from the envelope, which let an attacker pivot a
+    safe pydantic class (e.g., AIMessage) to `parse_raw(..., allow_pickle=True)`
+    and reach `pickle.loads`. Revival now uses only the default constructor.
+
+    Verifies that an envelope carrying ``method="parse_raw"`` does not dispatch
+    to that method: the result is whatever ``AIMessage(*args, **kwargs)`` would
+    produce, which proves the default constructor ran instead of ``parse_raw``.
+    """
+
+    serde = JsonPlusSerializer()
+    load = {
+        "lc": 2,
+        "type": "constructor",
+        "id": ["langchain_core", "messages", "ai", "AIMessage"],
+        "method": "parse_raw",
+        "args": ["default-ctor-ran"],
+        "kwargs": {"content_type": "application/pickle", "allow_pickle": True},
+    }
+    result = serde._revive_lc2(load)
+    # Default constructor accepts `content` as first positional arg. If parse_raw
+    # had been invoked instead, it would have attempted JSON/pickle parsing and
+    # raised (or executed the pickle gadget); neither would produce this result.
+    assert isinstance(result, AIMessage)
+    assert result.content == "default-ctor-ran"
+
+
+def test_lc2_json_method_field_is_ignored_for_allowlisted_types() -> None:
+    """The `method` field is ignored even when the class is explicitly allowlisted.
+
+    A user who configures ``allowed_json_modules`` for a class no longer gets
+    method dispatch as a side effect. Revival is restricted to the default
+    constructor regardless of how the class reached the revival path.
+    """
+
+    serde = JsonPlusSerializer(
+        allowed_json_modules=[("langchain_core.messages.ai", "AIMessage")]
+    )
+    load = {
+        "lc": 2,
+        "type": "constructor",
+        "id": ["langchain_core", "messages", "ai", "AIMessage"],
+        "method": "parse_raw",
+        "args": ["default-ctor-ran"],
+    }
+    result = serde._revive_lc2(load)
+    assert isinstance(result, AIMessage)
+    assert result.content == "default-ctor-ran"
+
+
+def test_lc2_json_safe_type_init_still_works() -> None:
+    """SAFE-type lc=2 revival without a `method` field still constructs the class."""
+
+    serde = JsonPlusSerializer()
+    load = {
+        "lc": 2,
+        "type": "constructor",
+        "id": ["langchain_core", "messages", "ai", "AIMessage"],
+        "kwargs": {"content": "hi", "type": "ai"},
+    }
+    result = serde._revive_lc2(load)
+    assert isinstance(result, AIMessage)
+    assert result.content == "hi"
+
+
+def test_lc2_json_legacy_pydantic_method_list_falls_back_to_default() -> None:
+    """Legacy ``method=(None, "construct")`` envelopes still revive via the default ctor.
+
+    Pre-October-2025 langgraph emitted pydantic models with
+    ``method=(None, "construct")`` meaning "try default constructor, fall back
+    to pydantic ``construct``". The first entry (``None``) was always the
+    default constructor, which is what we now do unconditionally. Envelopes of
+    this shape continue to revive correctly as long as the default constructor
+    accepts the serialized kwargs.
+    """
+
+    serde = JsonPlusSerializer()
+    load = {
+        "lc": 2,
+        "type": "constructor",
+        "id": ["langchain_core", "messages", "ai", "AIMessage"],
+        "method": [None, "construct"],
+        "kwargs": {"content": "legacy", "type": "ai"},
+    }
+    result = serde._revive_lc2(load)
+    assert isinstance(result, AIMessage)
+    assert result.content == "legacy"
+
+
+def test_lc2_json_legacy_construct_payload_logs_warning_when_default_init_rejects(
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """Legacy `method=[None, "construct"]` envelopes whose kwargs the default
+    `__init__` rejects now revive to `None` and emit an observable warning.
+
+    Pre-October-2025 langgraph emitted pydantic payloads with
+    `method=[None, "construct"]` so the reviver could fall back to
+    `cls.construct(**kwargs)` when the default constructor raised a
+    validation error. That fallback was removed with method-field dispatch
+    (GHSA-fjqc-hq36-qh5p), so these payloads now silently fail validation. A
+    `logger.warning` makes the regression observable to operators instead of
+    letting the envelope quietly degrade to its raw-dict form.
+    """
+    serde = JsonPlusSerializer()
+    load = {
+        "lc": 2,
+        "type": "constructor",
+        "id": ["langchain_core", "messages", "ai", "AIMessage"],
+        # Legacy two-entry method tuple: try default ctor, fall back to construct.
+        "method": [None, "construct"],
+        # ``type="not-a-real-message-type"`` fails AIMessage's Literal["ai"]
+        # validator under the default constructor. Before the GHSA patch this
+        # would have fallen back to ``cls.construct(**kwargs)``; now it must
+        # return None and log.
+        "kwargs": {"content": "legacy", "type": "not-a-real-message-type"},
+    }
+
+    with caplog.at_level(logging.WARNING, logger="langgraph.checkpoint.serde.jsonplus"):
+        result = serde._revive_lc2(load)
+
+    assert result is None, (
+        "Legacy method=[None, 'construct'] payloads with kwargs the default "
+        "ctor rejects must now return None (no construct() fallback)."
+    )
+
+    matching = [
+        r
+        for r in caplog.records
+        if r.name == "langgraph.checkpoint.serde.jsonplus"
+        and r.levelno == logging.WARNING
+        and "langchain_core.messages.ai.AIMessage" in r.getMessage()
+        and "legacy_method_field=True" in r.getMessage()
+    ]
+    assert matching, (
+        "Expected a WARNING from langgraph.checkpoint.serde.jsonplus "
+        "referencing the class id and legacy_method_field=True; "
+        f"got records: {[(r.name, r.levelname, r.getMessage()) for r in caplog.records]}"
+    )
+
+
+def test_lc2_json_safe_type_pickle_payload_does_not_execute() -> None:
+    """End-to-end: a `parse_raw` pickle gadget payload on a SAFE type must not run.
+
+    With method dispatch removed from `_revive_lc2`, the gadget bytes are never
+    passed to `parse_raw` and therefore never reach `pickle.loads`.
+    """
+
+    marker = tempfile.NamedTemporaryFile(
+        prefix="lc2_block_proof_", suffix=".out", delete=False
+    ).name
+    os.remove(marker)  # ensure absent before the test runs
+
+    class _Gadget:
+        def __reduce__(self) -> tuple:
+            return (os.system, (f"touch {marker}",))
+
+    gadget_bytes = pickle.dumps(_Gadget(), protocol=0).decode("latin1")
+    envelope = {
+        "lc": 2,
+        "type": "constructor",
+        "id": ["langchain_core", "messages", "ai", "AIMessage"],
+        "method": "parse_raw",
+        "args": [gadget_bytes],
+        "kwargs": {"content_type": "application/pickle", "allow_pickle": True},
+    }
+
+    serde = JsonPlusSerializer()
+    try:
+        serde.loads_typed(("json", json.dumps(envelope).encode()))
+    except Exception:
+        pass
+
+    assert not os.path.exists(marker), (
+        "Pickle gadget executed via parse_raw on AIMessage lc=2 envelope"
+    )
+
+
 def test_serde_jsonplus_bytearray() -> None:
     serde = JsonPlusSerializer()
 

libs/checkpoint/tests/test_memory.py

@@ -1,3 +1,4 @@
+import asyncio
 import logging
 from typing import Any
 
@@ -523,7 +524,6 @@ class TestBaseFallbackGetChannelWrites:
         `threading.local()` guard would let whichever task set it first
         short-circuit the other to `writes=[]`.
         """
-        import asyncio
 
         saver, thread_id, ns = self._build_saver_with_chain()
 
@@ -577,9 +577,19 @@ class TestPreDeltaBlobTerminator:
     """
 
     def _build_mixed_thread(self) -> tuple[InMemorySaver, str, str, str, str]:
-        """Three-checkpoint chain: cp1 (pre-delta, blob=[A]), cp2 (delta,
-        write=B), cp3 (delta, write=C). Reconstructing at cp3 must yield
-        seed=[A] + writes=[B, C].
+        """Four-checkpoint chain spanning the migration boundary:
+
+        * `cp0` — pre-delta ancestor OLDER than the seed. Its write
+          (`OLDER-WRITE`) is already folded into `cp1`'s stored value, so the
+          walk must terminate at `cp1` and never reach it.
+        * `cp1` — pre-delta, blob `["A"]`. That value is the state ENTERING
+          `cp1`; the write stored under `cp1` (`PRE-DELTA-WRITE`) is what
+          produced `cp2` and is NOT subsumed by the blob.
+        * `cp2` — delta-era, no stored value, write `B`.
+        * `cp3` — target, delta-era, write `PENDING-AT-TARGET`.
+
+        Reconstructing at `cp3` must yield seed `["A"]` plus writes
+        `["PRE-DELTA-WRITE", "B"]`.
 
         Returns `(saver, thread_id, ns, channel, cp3_id)`.
         """
@@ -587,16 +597,21 @@ class TestPreDeltaBlobTerminator:
         serde = JsonPlusSerializer()
         thread_id, ns, channel = "t1", "", "messages"
 
+        v0 = "00000000000000000000000000000000.0"
         v1 = "00000000000000000000000000000001.0"
         v2 = "00000000000000000000000000000002.0"
         v3 = "00000000000000000000000000000003.0"
 
-        # Pre-delta: cp1 stored a real blob for the channel.
+        # Pre-delta: cp0 and cp1 stored real blobs for the channel.
+        saver.blobs[(thread_id, ns, channel, v0)] = serde.dumps_typed([])
         saver.blobs[(thread_id, ns, channel, v1)] = serde.dumps_typed(["A"])
         # Delta-era: cp2 and cp3 store "empty"; real writes in checkpoint_writes.
         saver.blobs[(thread_id, ns, channel, v2)] = ("empty", b"")
         saver.blobs[(thread_id, ns, channel, v3)] = ("empty", b"")
 
+        cp0 = empty_checkpoint()
+        cp0["id"] = "cp0"
+        cp0["channel_versions"][channel] = v0
         cp1 = empty_checkpoint()
         cp1["id"] = "cp1"
         cp1["channel_versions"][channel] = v1
@@ -608,16 +623,24 @@ class TestPreDeltaBlobTerminator:
         cp3["channel_versions"][channel] = v3
 
         saver.storage[thread_id][ns] = {
-            "cp1": (serde.dumps_typed(cp1), serde.dumps_typed({}), None),
+            "cp0": (serde.dumps_typed(cp0), serde.dumps_typed({}), None),
+            "cp1": (serde.dumps_typed(cp1), serde.dumps_typed({}), "cp0"),
             "cp2": (serde.dumps_typed(cp2), serde.dumps_typed({}), "cp1"),
             "cp3": (serde.dumps_typed(cp3), serde.dumps_typed({}), "cp2"),
         }
-        # Write under cp1 would be from the pre-delta era and MUST be ignored
-        # (the blob already captures it). We add one and assert it is not
-        # folded into the reconstructed result.
-        saver.writes[(thread_id, ns, "cp1")][("task0", 0)] = (
+        # Write under cp0 is older than the seed — cp1's blob already folded
+        # it in, and the terminator must stop before reaching it.
+        saver.writes[(thread_id, ns, "cp0")][("task0", 0)] = (
             "task0",
             channel,
+            serde.dumps_typed("OLDER-WRITE"),
+            "",
+        )
+        # Write under cp1 postdates cp1's blob (it is what produced cp2, which
+        # stores no value of its own) and MUST be replayed.
+        saver.writes[(thread_id, ns, "cp1")][("task1", 0)] = (
+            "task1",
+            channel,
             serde.dumps_typed("PRE-DELTA-WRITE"),
             "",
         )
@@ -651,15 +674,19 @@ class TestPreDeltaBlobTerminator:
 
         # Seed came from the pre-delta blob at cp1.
         assert result["seed"] == ["A"]
-        # Delta-era writes from cp2 replay through the reducer on top of seed.
-        # cp3 is the target — its own write is pending for the NEXT step and
-        # must be excluded.
+        # The seed ancestor's own write and the delta-era write from cp2 both
+        # replay through the reducer on top of the seed, oldest first. cp3 is
+        # the target — its own write is pending for the NEXT step and must be
+        # excluded.
         values = [v for _, _, v in result["writes"]]
-        assert values == ["B"]
+        assert values == ["PRE-DELTA-WRITE", "B"]
 
-    def test_pre_delta_blob_terminates_walk_before_older_writes(self) -> None:
-        """Writes stored at the pre-delta ancestor itself must not be replayed
-        (the blob subsumes them)."""
+    def test_seed_bounds_walk_without_dropping_its_own_writes(self) -> None:
+        """The seed terminator bounds the walk: writes at ancestors OLDER than
+        the seed are already folded into the seed value and must not be
+        replayed. The seed ancestor's own write is not one of them — it
+        postdates the stored value and produced the next checkpoint.
+        """
         saver, thread_id, ns, channel, target = self._build_mixed_thread()
         config: RunnableConfig = {
             "configurable": {
@@ -674,7 +701,9 @@ class TestPreDeltaBlobTerminator:
         ]
 
         values = [v for _, _, v in result["writes"]]
-        # The pre-delta write under cp1 must not appear (the blob subsumes it).
-        assert "PRE-DELTA-WRITE" not in values
+        # Older than the seed — subsumed by cp1's blob, so the walk stops first.
+        assert "OLDER-WRITE" not in values
+        # Stored AT the seed ancestor — not subsumed, so it must be replayed.
+        assert "PRE-DELTA-WRITE" in values
         # And the pending write at the target is never folded in.
         assert "PENDING-AT-TARGET" not in values

libs/checkpoint/tests/test_store.py

@@ -1,4 +1,3 @@
-# mypy: disable-error-code="operator"
 import asyncio
 import json
 from collections.abc import Iterable

libs/checkpoint/uv.lock

@@ -149,11 +149,11 @@ wheels = [
 
 [[package]]
 name = "codespell"
-version = "2.4.2"
+version = "2.4.3"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/2d/9d/1d0903dff693160f893ca6abcabad545088e7a2ee0a6deae7c24e958be69/codespell-2.4.2.tar.gz", hash = "sha256:3c33be9ae34543807f088aeb4832dfad8cb2dae38da61cac0a7045dd376cfdf3", size = 352058, upload-time = "2026-03-05T18:10:42.936Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/80/19/45e941380f69c042b43423513d201e6592346f992394347f5e7174c31407/codespell-2.4.3.tar.gz", hash = "sha256:cbe085e331227b37bb86ef8bddd08dc768c704ee9a07ca869852c093fa2793e2", size = 352773, upload-time = "2026-07-15T11:51:54.159Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/42/a1/52fa05533e95fe45bcc09bcf8a503874b1c08f221a4e35608017e0938f55/codespell-2.4.2-py3-none-any.whl", hash = "sha256:97e0c1060cf46bd1d5db89a936c98db8c2b804e1fdd4b5c645e82a1ec6b1f886", size = 353715, upload-time = "2026-03-05T18:10:41.398Z" },
+    { url = "https://files.pythonhosted.org/packages/8b/bf/bdb951d34eb169140b546f44be9ec4525d1acefb9eb5572071f5492b19fc/codespell-2.4.3-py3-none-any.whl", hash = "sha256:af2505b335e8573dbd2d384d1c4ef498f4006f4ba2d6fceca01e55b91f52628a", size = 340736, upload-time = "2026-07-15T11:51:52.925Z" },
 ]
 
 [[package]]
@@ -229,11 +229,11 @@ wheels = [
 
 [[package]]
 name = "idna"
-version = "3.11"
+version = "3.15"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/6f/6d/0703ccc57f3a7233505399edb88de3cbd678da106337b9fcde432b65ed60/idna-3.11.tar.gz", hash = "sha256:795dafcc9c04ed0c1fb032c2aa73654d8e8c5023a7df64a53f39190ada629902", size = 194582, upload-time = "2025-10-12T14:55:20.501Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/82/77/7b3966d0b9d1d31a36ddf1746926a11dface89a83409bf1483f0237aa758/idna-3.15.tar.gz", hash = "sha256:ca962446ea538f7092a95e057da437618e886f4d349216d2b1e294abfdb65fdc", size = 199245, upload-time = "2026-05-12T22:45:57.011Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/0e/61/66938bbb5fc52dbdf84594873d5b51fb1f7c7794e9c0f5bd885f30bc507b/idna-3.11-py3-none-any.whl", hash = "sha256:771a87f49d9defaf64091e6e6fe9c18d4833f140bd19464795bc32d966ca37ea", size = 71008, upload-time = "2025-10-12T14:55:18.883Z" },
+    { url = "https://files.pythonhosted.org/packages/d2/23/408243171aa9aaba178d3e2559159c24c1171a641aa83b67bdd3394ead8e/idna-3.15-py3-none-any.whl", hash = "sha256:048adeaf8c2d788c40fee287673ccaa74c24ffd8dcf09ffa555a2fbb59f10ac8", size = 72340, upload-time = "2026-05-12T22:45:55.733Z" },
 ]
 
 [[package]]
@@ -268,7 +268,7 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "1.3.2"
+version = "1.5.2"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "jsonpatch" },
@@ -281,26 +281,26 @@ dependencies = [
     { name = "typing-extensions" },
     { name = "uuid-utils" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/a8/03/7219502e8ca728d65eb44d7a3eb60239230742a70dbfc9241b9bfd61c4ab/langchain_core-1.3.2.tar.gz", hash = "sha256:fd7a50b2f28ba561fd9d7f5d2760bc9e06cf00cdf820a3ccafe88a94ffa8d5b7", size = 911813, upload-time = "2026-04-24T15:49:23.699Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/6e/58/3ad53096eee1e07728e8219ded30ae308b0f2b8b7b26b8ebb6371917c0f5/langchain_core-1.5.2.tar.gz", hash = "sha256:2d13ab35b42eec63d4669a483776b8cdd778ee764107149369fb369d84c08c41", size = 972322, upload-time = "2026-07-28T16:38:37.977Z" }
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     { name = "ruff" },
+    { name = "ty" },
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+    { name = "ty" },
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+
 [[package]]
 name = "xxhash"
 version = "3.6.0"

libs/cli/Makefile

@@ -16,21 +16,19 @@ test-integration:
 
 # Define a variable for Python and notebook files.
 PYTHON_FILES=.
-MYPY_CACHE=.mypy_cache
 lint format: PYTHON_FILES=.
 lint_diff format_diff: PYTHON_FILES=$(shell git diff --name-only --relative --diff-filter=d main . | grep -E '\.py$$|\.ipynb$$')
 lint_package: PYTHON_FILES=langgraph_cli
 lint_tests: PYTHON_FILES=tests
-lint_tests: MYPY_CACHE=.mypy_cache_test
 
 lint lint_diff lint_package lint_tests:
 	uv run ruff check .
 	[ "$(PYTHON_FILES)" = "" ] || uv run ruff format $(PYTHON_FILES) --diff
 	[ "$(PYTHON_FILES)" = "" ] || uv run ruff check --select I $(PYTHON_FILES)
-	[ "$(PYTHON_FILES)" = "" ] || mkdir -p $(MYPY_CACHE) || uv run mypy $(PYTHON_FILES) --cache-dir $(MYPY_CACHE)
+	[ "$(PYTHON_FILES)" = "" ] || uv run ty check $(PYTHON_FILES)
 
 type:
-	mkdir -p $(MYPY_CACHE) && uv run mypy $(PYTHON_FILES) --cache-dir $(MYPY_CACHE)
+	uv run ty check $(PYTHON_FILES)
 
 format format_diff:
 	uv run ruff format $(PYTHON_FILES)

libs/cli/README.md

@@ -1,29 +1,47 @@
 # LangGraph CLI
 
-The official command-line interface for LangGraph, providing tools to create, develop, and deploy LangGraph applications.
+[![PyPI - Version](https://img.shields.io/pypi/v/langgraph-cli?label=%20)](https://pypi.org/project/langgraph-cli/#history)
+[![PyPI - License](https://img.shields.io/pypi/l/langgraph-cli)](https://opensource.org/licenses/MIT)
+[![PyPI - Downloads](https://img.shields.io/pepy/dt/langgraph-cli)](https://pypistats.org/packages/langgraph-cli)
+[![Twitter](https://img.shields.io/twitter/url/https/twitter.com/langchain_oss.svg?style=social&label=Follow%20%40LangChain)](https://x.com/langchain_oss)
 
-## Installation
+To help you ship LangGraph apps to production faster, check out [LangSmith](https://www.langchain.com/langsmith).
+[LangSmith](https://www.langchain.com/langsmith) is a unified developer platform for building, testing, and monitoring LLM applications.
+
+## Quick Install
 
-Install via pip:
 ```bash
-pip install langgraph-cli
+uv add langgraph-cli
 ```
 
+## 🤔 What is this?
+
+The LangGraph CLI is the official command-line interface for LangGraph. It provides tools to create, develop, build, and run LangGraph applications locally or in Docker.
+
+## 📖 Documentation
+
+For full documentation, see the [LangGraph CLI reference](https://reference.langchain.com/python/langgraph-cli). For conceptual guides and tutorials, see the [LangGraph Docs](https://docs.langchain.com/oss/python/langgraph/overview).
+
 For development mode with hot reloading:
+
 ```bash
-pip install "langgraph-cli[inmem]"
+uv add "langgraph-cli[inmem]"
 ```
 
 ## Commands
 
 ### `langgraph new` 🌱
-Create a new LangGraph project from a template
+
+Create a new LangGraph project from a template.
+
 ```bash
 langgraph new [PATH] --template TEMPLATE_NAME
 ```
 
 ### `langgraph dev` 🏃‍♀️
-Run LangGraph API server in development mode with hot reloading
+
+Run LangGraph API server in development mode with hot reloading.
+
 ```bash
 langgraph dev [OPTIONS]
   --host TEXT                 Host to bind to (default: 127.0.0.1)
@@ -35,7 +53,9 @@ langgraph dev [OPTIONS]
 ```
 
 ### `langgraph up` 🚀
-Launch LangGraph API server in Docker
+
+Launch LangGraph API server in Docker.
+
 ```bash
 langgraph up [OPTIONS]
   -p, --port INTEGER        Port to expose (default: 8123)
@@ -47,7 +67,9 @@ langgraph up [OPTIONS]
 ```
 
 ### `langgraph build`
-Build a Docker image for your LangGraph application
+
+Build a Docker image for your LangGraph application.
+
 ```bash
 langgraph build -t IMAGE_TAG [OPTIONS]
   --platform TEXT          Target platforms (e.g., linux/amd64,linux/arm64)
@@ -56,7 +78,9 @@ langgraph build -t IMAGE_TAG [OPTIONS]
 ```
 
 ### `langgraph dockerfile`
-Generate a Dockerfile for custom deployments
+
+Generate a Dockerfile for custom deployments.
+
 ```bash
 langgraph dockerfile SAVE_PATH [OPTIONS]
   -c, --config FILE       Config file path
@@ -68,18 +92,18 @@ The CLI uses a `langgraph.json` configuration file with these key settings:
 
 ```json
 {
-  "dependencies": ["langchain_openai", "./your_package"],  // Required: Package dependencies
+  "dependencies": ["langchain_openai", "./your_package"],
   "graphs": {
-    "my_graph": "./your_package/file.py:graph"            // Required: Graph definitions
+    "my_graph": "./your_package/file.py:graph"
   },
-  "env": "./.env",                                        // Optional: Environment variables
-  "python_version": "3.11",                               // Optional: Python version (3.11/3.12)
-  "pip_config_file": "./pip.conf",                        // Optional: pip configuration
-  "dockerfile_lines": []                                  // Optional: Additional Dockerfile commands
+  "env": "./.env",
+  "python_version": "3.11",
+  "pip_config_file": "./pip.conf",
+  "dockerfile_lines": []
 }
 ```
 
-See the [full documentation](https://langchain-ai.github.io/langgraph/cloud/reference/cli/) for detailed configuration options.
+See the [full documentation](https://reference.langchain.com/python/langgraph-cli) for detailed configuration options.
 
 ## Development
 
@@ -87,19 +111,26 @@ To develop the CLI itself:
 
 1. Clone the repository
 2. Navigate to the CLI directory: `cd libs/cli`
-3. Install development dependencies: `uv pip install`
+3. Install development dependencies: `uv sync`
 4. Make your changes to the CLI code
 5. Test your changes:
-   ```bash
-   # Run CLI commands directly
-   uv run langgraph --help
-   
-   # Or use the examples
-   cd examples
-   uv pip install
-   uv run langgraph dev  # or other commands
-   ```
 
-## License
+```bash
+# Run CLI commands directly
+uv run langgraph --help
 
-This project is licensed under the terms specified in the repository's LICENSE file.
+# Or use the examples
+cd examples
+uv sync
+uv run langgraph dev  # or other commands
+```
+
+## 📕 Releases & Versioning
+
+See our [Releases](https://docs.langchain.com/oss/python/release-policy) and [Versioning](https://docs.langchain.com/oss/python/versioning) policies.
+
+## 💁 Contributing
+
+As an open-source project in a rapidly developing field, we are extremely open to contributions, whether it be in the form of a new feature, improved infrastructure, or better documentation.
+
+For detailed information on how to contribute, see the [Contributing Guide](https://docs.langchain.com/oss/python/contributing/overview).

libs/cli/examples/graph_prerelease_reqs/pyproject.toml

@@ -6,7 +6,7 @@ readme = "README.md"
 requires-python = ">=3.10"
 dependencies = [
   "langchain-openai==1.1.14",
-  "langchain-anthropic==1.0.0a5",
+  "langchain-anthropic==1.4.6",
   "langgraph==1.1.5"
 ]
 

libs/cli/examples/graphs/storm.py

@@ -236,7 +236,7 @@ def swap_roles(state: InterviewState, name: str):
     converted = []
     for message in state["messages"]:
         if isinstance(message, AIMessage) and message.name != name:
-            message = HumanMessage(**message.dict(exclude={"type"}))
+            message = HumanMessage(**message.model_dump(exclude={"type"}))
         converted.append(message)
     return {"messages": converted}
 

libs/cli/js-examples/README.md

@@ -10,7 +10,7 @@ This template demonstrates a simple chatbot implemented using [LangGraph.js](htt
 
 The core logic, defined in `src/agent/graph.ts`, showcases a straightforward chatbot that responds to user queries while maintaining context from previous messages.
 
-## What it does
+## 🤔 What is this?
 
 The simple chatbot:
 
@@ -20,6 +20,10 @@ The simple chatbot:
 
 This template provides a foundation that can be easily customized and extended to create more complex conversational agents.
 
+## 📖 Documentation
+
+For JavaScript and TypeScript documentation, see the [LangGraph.js docs](https://docs.langchain.com/oss/javascript/langgraph/overview). LangGraph Studio also integrates with [LangSmith](https://smith.langchain.com/) for tracing and collaboration with teammates.
+
 ## Getting Started
 
 Assuming you have already [installed LangGraph Studio](https://github.com/langchain-ai/langgraph-studio?tab=readme-ov-file#download), to set up:

libs/cli/js-examples/package.json

@@ -21,25 +21,28 @@
     "test:all": "yarn test && yarn test:int && yarn lint:langgraph"
   },
   "dependencies": {
-    "@langchain/core": "^1.1.42",
-    "@langchain/langgraph": "^1.2.9"
+    "@langchain/core": "^1.2.4",
+    "@langchain/langgraph": "^1.4.8"
+  },
+  "resolutions": {
+    "@langchain/langgraph-checkpoint": "1.0.4"
   },
   "devDependencies": {
-    "@eslint/eslintrc": "^3.3.5",
+    "@eslint/eslintrc": "^3.3.6",
     "@eslint/js": "^10.0.1",
     "@tsconfig/recommended": "^1.0.13",
     "@types/jest": "^30.0.0",
-    "@typescript-eslint/eslint-plugin": "^8.59.1",
-    "@typescript-eslint/parser": "^8.59.1",
+    "@typescript-eslint/eslint-plugin": "^8.65.0",
+    "@typescript-eslint/parser": "^8.65.0",
     "dotenv": "^17.4.2",
-    "eslint": "^10.2.1",
+    "eslint": "^10.8.0",
     "eslint-config-prettier": "^10.1.8",
     "eslint-plugin-import": "^2.32.0",
     "eslint-plugin-no-instanceof": "^1.0.1",
-    "eslint-plugin-prettier": "^5.5.5",
-    "jest": "^30.3.0",
-    "prettier": "^3.8.3",
-    "ts-jest": "^29.4.9",
-    "typescript": "^5.9.3"
+    "eslint-plugin-prettier": "^5.5.6",
+    "jest": "^30.4.2",
+    "prettier": "^3.9.6",
+    "ts-jest": "^29.4.12",
+    "typescript": "^7.0.2"
   }
 }

libs/cli/js-monorepo-example/apps/agent/package.json

@@ -9,10 +9,10 @@
   },
   "dependencies": {
     "@js-monorepo-example/shared": "*",
-    "@langchain/core": "^1.1.42",
-    "@langchain/langgraph": "^1.2.9"
+    "@langchain/core": "^1.2.4",
+    "@langchain/langgraph": "^1.4.8"
   },
   "devDependencies": {
-    "typescript": "^5.9.3"
+    "typescript": "^7.0.2"
   }
 }

libs/cli/js-monorepo-example/libs/shared/package.json

@@ -9,6 +9,6 @@
     "clean": "rm -rf dist"
   },
   "devDependencies": {
-    "typescript": "^5.9.3"
+    "typescript": "^7.0.2"
   }
 }

libs/cli/js-monorepo-example/package.json

@@ -17,18 +17,18 @@
     "lint": "eslint 'apps/**/*.ts' 'libs/**/*.ts'"
   },
   "devDependencies": {
-    "turbo": "^2.9.7",
-    "typescript": "^5.9.3",
+    "turbo": "^2.10.8",
+    "typescript": "^7.0.2",
     "@tsconfig/recommended": "^1.0.13",
-    "@eslint/eslintrc": "^3.3.5",
+    "@eslint/eslintrc": "^3.3.6",
     "@eslint/js": "^10.0.1",
-    "eslint": "^10.2.1",
+    "eslint": "^10.8.0",
     "eslint-config-prettier": "^10.1.8",
     "eslint-plugin-import": "^2.27.5",
     "eslint-plugin-no-instanceof": "^1.0.1",
-    "eslint-plugin-prettier": "^5.5.5",
-    "@typescript-eslint/eslint-plugin": "^8.59.1",
-    "@typescript-eslint/parser": "^8.59.1",
-    "prettier": "^3.8.3"
+    "eslint-plugin-prettier": "^5.5.6",
+    "@typescript-eslint/eslint-plugin": "^8.65.0",
+    "@typescript-eslint/parser": "^8.65.0",
+    "prettier": "^3.9.6"
   }
 }

libs/cli/js-monorepo-example/tsconfig.json

@@ -3,7 +3,7 @@
   "compilerOptions": {
     "target": "ES2022",
     "module": "ESNext",
-    "moduleResolution": "node",
+    "moduleResolution": "bundler",
     "allowSyntheticDefaultImports": true,
     "esModuleInterop": true,
     "skipLibCheck": true,

libs/cli/js-monorepo-example/yarn.lock

@@ -28,10 +28,10 @@
     debug "^4.3.1"
     minimatch "^10.2.4"
 
-"@eslint/config-helpers@^0.5.5":
-  version "0.5.5"
-  resolved "https://registry.yarnpkg.com/@eslint/config-helpers/-/config-helpers-0.5.5.tgz#ae16134e4792ac5fbdc533548a24ac1ea9f7f3ae"
-  integrity sha512-eIJYKTCECbP/nsKaaruF6LW967mtbQbsw4JTtSVkUQc9MneSkbrgPJAbKl9nWr0ZeowV8BfsarBmPpBzGelA2w==
+"@eslint/config-helpers@^0.7.0":
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/@eslint/config-helpers/-/config-helpers-0.7.0.tgz#09ee4aa07b73f059ec2d4c74bf4b2ff02b322377"
+  integrity sha512-DObd/KKUsU+FaFv4PLxSRenpXfQWmPXXP3pPZ6/K1PCrMu2vQpMDMuQe/BqYeoLcz8ro0bVDF1RxOJgfVEdhUw==
   dependencies:
     "@eslint/core" "^1.2.1"
 
@@ -42,10 +42,10 @@
   dependencies:
     "@types/json-schema" "^7.0.15"
 
-"@eslint/eslintrc@^3.3.5":
-  version "3.3.5"
-  resolved "https://registry.yarnpkg.com/@eslint/eslintrc/-/eslintrc-3.3.5.tgz#c131793cfc1a7b96f24a83e0a8bbd4b881558c60"
-  integrity sha512-4IlJx0X0qftVsN5E+/vGujTRIFtwuLbNsVUe7TO6zYPDR1O6nFwvwhIKEKSrl6dZchmYBITazxKoUYOjdtjlRg==
+"@eslint/eslintrc@^3.3.6":
+  version "3.3.6"
+  resolved "https://registry.yarnpkg.com/@eslint/eslintrc/-/eslintrc-3.3.6.tgz#d22bfd6b3a7d8e1f2c0b2f2e6de111b53ec6e13e"
+  integrity sha512-l2Ul9PrHsPCKcEY/ac7VgFj9D80C7S68sOKc618SyHDPK36s1XcFebXY0iTzUVn4Yq+YbwvSnDmCz9yxjX+QrA==
   dependencies:
     ajv "^6.14.0"
     debug "^4.3.2"
@@ -53,7 +53,7 @@
     globals "^14.0.0"
     ignore "^5.2.0"
     import-fresh "^3.2.1"
-    js-yaml "^4.1.1"
+    js-yaml "^4.3.0"
     minimatch "^3.1.5"
     strip-json-comments "^3.1.1"
 
@@ -67,10 +67,10 @@
   resolved "https://registry.yarnpkg.com/@eslint/object-schema/-/object-schema-3.0.5.tgz#88e9bf4d11d2b19c082e78ebe7ce88724a5eb091"
   integrity sha512-vqTaUEgxzm+YDSdElad6PiRoX4t8VGDjCtt05zn4nU810UIx/uNEV7/lZJ6KwFThKZOzOxzXy48da+No7HZaMw==
 
-"@eslint/plugin-kit@^0.7.1":
-  version "0.7.1"
-  resolved "https://registry.yarnpkg.com/@eslint/plugin-kit/-/plugin-kit-0.7.1.tgz#c4125fd015eceeb09b793109fdbcd4dd0a02d346"
-  integrity sha512-rZAP3aVgB9ds9KOeUSL+zZ21hPmo8dh6fnIFwRQj5EAZl9gzR7wxYbYXYysAM8CTqGmUGyp2S4kUdV17MnGuWQ==
+"@eslint/plugin-kit@^0.7.2":
+  version "0.7.2"
+  resolved "https://registry.yarnpkg.com/@eslint/plugin-kit/-/plugin-kit-0.7.2.tgz#4b0962f3f2c7ce8bc98b3ecfe34525c09d2cb729"
+  integrity sha512-+CNAzxglkrpNf/kKywqQfk74QjtceuOE7Qm+AF8miRvPF/wmmK5+OJOgVh3AVTT3RP2mH3+FOaxlE5v72owk0A==
   dependencies:
     "@eslint/core" "^1.2.1"
     levn "^0.4.1"
@@ -103,53 +103,53 @@
   resolved "https://registry.yarnpkg.com/@isaacs/cliui/-/cliui-9.0.0.tgz#4d0a3f127058043bf2e7ee169eaf30ed901302f3"
   integrity sha512-AokJm4tuBHillT+FpMtxQ60n8ObyXBatq7jD2/JA9dxbDDokKQm8KMht5ibGzLVU9IJDIKK4TPKgMHEYMn3lMg==
 
-"@langchain/core@^1.1.42":
-  version "1.1.42"
-  resolved "https://registry.yarnpkg.com/@langchain/core/-/core-1.1.42.tgz#607bfd34c1414c9cbeb2859fda1b254a14c28085"
-  integrity sha512-d0tN96BrwPMryYyWR9VfyAntSivn7EQrZCe5Kpxum93tcjTXbKKmKvItFec8AluQt88iTcmAJrahUZUNfzGwTA==
+"@langchain/core@^1.2.4":
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/@langchain/core/-/core-1.2.4.tgz#3916181e00f93b2e3b5801ab8273c07d144d75ce"
+  integrity sha512-GIrJktdsFPx8gM0C3VyikkeYGZAV7iRIzUJuS5tFatiKLExybou0LI0MuxH9kksN38quyfWdQDl20lIEAEVkVA==
   dependencies:
     "@cfworker/json-schema" "^4.0.2"
     "@standard-schema/spec" "^1.1.0"
-    ansi-styles "^5.0.0"
-    camelcase "6"
-    decamelize "1.2.0"
     js-tiktoken "^1.0.12"
     langsmith ">=0.5.0 <1.0.0"
     mustache "^4.2.0"
     p-queue "^6.6.2"
     zod "^3.25.76 || ^4"
 
-"@langchain/langgraph-checkpoint@^1.0.1":
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/@langchain/langgraph-checkpoint/-/langgraph-checkpoint-1.0.1.tgz#0ee5bdfeb9878d8d1d99347f23e199e5afd52995"
-  integrity sha512-HM0cJLRpIsSlWBQ/xuDC67l52SqZ62Bh2Y61DX+Xorqwoh5e1KxYvfCD7GnSTbWWhjBOutvnR0vPhu4orFkZfw==
-  dependencies:
-    uuid "^10.0.0"
+"@langchain/langgraph-checkpoint@^1.1.3":
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph-checkpoint/-/langgraph-checkpoint-1.1.3.tgz#891f2f9a2e96cf2ab0920f9240f9ad1e0a86a4ab"
+  integrity sha512-wgzdQNeEsdw1e+4lvlj0tdq/RYR/k1vPin10g0ymGoehZDDgd9nvIllGXSXN4TFgF9sf5qQP/KTkOcLfeseIhA==
 
-"@langchain/langgraph-sdk@~1.8.9":
-  version "1.8.10"
-  resolved "https://registry.yarnpkg.com/@langchain/langgraph-sdk/-/langgraph-sdk-1.8.10.tgz#bd175cda1ab629845ef28b22b45f3bdd1f65b029"
-  integrity sha512-wrB3rkRw5KAmsqezwvKP3midT4qJrV6Hj9XJMYo+cbvXC4HYpSAmyY/VriSyeTFRbLG/OP/pY2Yz+9Z54nSaXQ==
+"@langchain/langgraph-sdk@~1.9.26":
+  version "1.9.28"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph-sdk/-/langgraph-sdk-1.9.28.tgz#1664cc7b6f2c1509ddffecf17d805a26e70a7e1a"
+  integrity sha512-4j3XuM0PvtmAbL8mPfBS99ez3+ytRfgbOpAR/nOeaejTRF3Q9dNw2QnaGLGng8wLPtGLoSj+SYgUOVxy9Bv9vg==
   dependencies:
+    "@langchain/protocol" "^0.0.18"
     "@types/json-schema" "^7.0.15"
     p-queue "^9.0.1"
     p-retry "^7.1.1"
-    uuid "^13.0.0"
 
-"@langchain/langgraph@^1.2.9":
-  version "1.2.9"
-  resolved "https://registry.yarnpkg.com/@langchain/langgraph/-/langgraph-1.2.9.tgz#4f0ba159062c3649c83cf5f621ef926b96933e32"
-  integrity sha512-3c7BtGycHC2v9p6w/Hv8L7kEl1YnZYOQTDJtmAp3knk6JOedO7d2bYP3y0SRyhv5orUEGf/KGvx8ZsB/ideP7g==
+"@langchain/langgraph@^1.4.8":
+  version "1.4.8"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph/-/langgraph-1.4.8.tgz#65ef5635b5554cd32f502a3808b92d8371998a99"
+  integrity sha512-DN1Np1XefdBEbp1qBKlt39cwoL743AAGpR5Ipja0gY2YbWvsoQnOTIrjnj/orSAhaUYsdTKS8VSWdFzsHZo6Ig==
   dependencies:
-    "@langchain/langgraph-checkpoint" "^1.0.1"
-    "@langchain/langgraph-sdk" "~1.8.9"
+    "@langchain/langgraph-checkpoint" "^1.1.3"
+    "@langchain/langgraph-sdk" "~1.9.26"
+    "@langchain/protocol" "^0.0.18"
     "@standard-schema/spec" "1.1.0"
-    uuid "^10.0.0"
 
-"@pkgr/core@^0.2.9":
-  version "0.2.9"
-  resolved "https://registry.yarnpkg.com/@pkgr/core/-/core-0.2.9.tgz#d229a7b7f9dac167a156992ef23c7f023653f53b"
-  integrity sha512-QNqXyfVS2wm9hweSYD2O7F0G06uurj9kZ96TRQE5Y9hU7+tgdZwIkbAKc5Ocy1HxEY2kuDQa6cQ1WRs/O5LFKA==
+"@langchain/protocol@^0.0.18":
+  version "0.0.18"
+  resolved "https://registry.yarnpkg.com/@langchain/protocol/-/protocol-0.0.18.tgz#6d96155e7263c958fbce6d4b7241b4725b72fbad"
+  integrity sha512-XW1egQtPfsGI41w2AMZNFZrUIwFSQHTjVMZs0OaTpCAvht/QLoaPN8FQcsysMVypOhupG28J29yOorrc70otBQ==
+
+"@pkgr/core@^0.3.6":
+  version "0.3.6"
+  resolved "https://registry.yarnpkg.com/@pkgr/core/-/core-0.3.6.tgz#3569708bd4be4d8870ba32bf1c456dac81600d97"
+  integrity sha512-SEeaJLb3qBNF/OaXnaR1NmmBbFYk1zC0ZH/52fATcRPLFg/p791YrcyFFy44Bo9sLaGuSuLp5Q6axbb/O+v/RA==
 
 "@rtsao/scc@^1.1.0":
   version "1.1.0"
@@ -166,35 +166,35 @@
   resolved "https://registry.yarnpkg.com/@tsconfig/recommended/-/recommended-1.0.13.tgz#269fce3ad04ca70b93269ff44cca81b950f542da"
   integrity sha512-sySRuBfMKyKO/j2ZAhR8kSembhjuPEV4Ra3AHtmWLq51+iGaudr45crPSzNC5b7/Ctrh9dfUpBuTlYrH6rM58Q==
 
-"@turbo/darwin-64@2.9.7":
-  version "2.9.7"
-  resolved "https://registry.yarnpkg.com/@turbo/darwin-64/-/darwin-64-2.9.7.tgz#46fddae01ea7817192dc6ff36a678cc3879b753b"
-  integrity sha512-wnvOWuVWJ5EUHNKxExEWiGlTeVpLG1L0PCu5MUozyC1P2SHGiWsmpW6/yAuShH91Fa2TAHOvdCRBzriZh4j4Eg==
+"@turbo/darwin-64@2.10.8":
+  version "2.10.8"
+  resolved "https://registry.yarnpkg.com/@turbo/darwin-64/-/darwin-64-2.10.8.tgz#0ae7cde6b95b82b0a4fe406ffea64bdfcf68a0ee"
+  integrity sha512-po+7rfJfUnFXjWlcoN2RwhErgzCdRtBc1T26vYPcywHlggmCQiQe1uWaE4j+BibI2uY9/2pDoFzMN0rmSaPFOw==
 
-"@turbo/darwin-arm64@2.9.7":
-  version "2.9.7"
-  resolved "https://registry.yarnpkg.com/@turbo/darwin-arm64/-/darwin-arm64-2.9.7.tgz#cd7cf3a024509af0f59ae3885216d62fd090fdb6"
-  integrity sha512-mA0FIPMwwN3lodDkQYaGxj6PeT7ZaN5aCEbkKn/WB+ZB9yJdVWA4J83GH7t43jqDc5dcnVluVN5UFx3plRiXhA==
+"@turbo/darwin-arm64@2.10.8":
+  version "2.10.8"
+  resolved "https://registry.yarnpkg.com/@turbo/darwin-arm64/-/darwin-arm64-2.10.8.tgz#18a9127c0a0d9c5ad7de49bdb27e7032f8946334"
+  integrity sha512-+zB2btDJ00lnPRuqOvpVvgl4x34k/djZQGZTTCfjn7JgNCl8QFY5Njo5+dqkY1g/+9gbbsnAvWm9CmJg9ebcXA==
 
-"@turbo/linux-64@2.9.7":
-  version "2.9.7"
-  resolved "https://registry.yarnpkg.com/@turbo/linux-64/-/linux-64-2.9.7.tgz#25ee9a2cb3042498a3203e14653b14041105020f"
-  integrity sha512-fEbUYpgb5l7P+q+5tsWF2gw+/GSjUsuUTcnfm+f0lozUjgcjLKyOat6PgtAChmIFcTPchCL/8rJ3TvkBy01gfA==
+"@turbo/linux-64@2.10.8":
+  version "2.10.8"
+  resolved "https://registry.yarnpkg.com/@turbo/linux-64/-/linux-64-2.10.8.tgz#1677672f5760d272c0a0608686fe8b8b29491fdb"
+  integrity sha512-K1dxqiVisyN7cViVsfQLs6xscQbYuI8aO2nbUhFURDACgEDfZRdP/b4CCxeosBJpcMfhYyiibWqJorCnvz9kKg==
 
-"@turbo/linux-arm64@2.9.7":
-  version "2.9.7"
-  resolved "https://registry.yarnpkg.com/@turbo/linux-arm64/-/linux-arm64-2.9.7.tgz#5b19d6249a50cb8153b8f2bc22ad10bbda614fbe"
-  integrity sha512-VkUjulo9ytfHKUHOS5gy0XPoh4CTKPXWCL8nLdrlHVi9fSut31ECeUqnm/dAbETP5D4xo9mH9XkJ+qMzGe/zmg==
+"@turbo/linux-arm64@2.10.8":
+  version "2.10.8"
+  resolved "https://registry.yarnpkg.com/@turbo/linux-arm64/-/linux-arm64-2.10.8.tgz#dbdb5aef9e53bb4c88357dafc19f79138ec29253"
+  integrity sha512-Gi77ibVnrE1fEmvr+/wBD/yvRqhwp/RQuCp2+//lv1U1wNFFyVg0V7Wj8FG9FXPFAw5QHReo8rxc9+wBSDZjzA==
 
-"@turbo/windows-64@2.9.7":
-  version "2.9.7"
-  resolved "https://registry.yarnpkg.com/@turbo/windows-64/-/windows-64-2.9.7.tgz#900645776fa44ff8333e801d890992736f6dbc72"
-  integrity sha512-/GWdY6/x4aIHqkYJq596Rpdk1x0MkpRPkJcLAoB3yGRwyUms0+u2F1GnV54IbyAZTeKLRWSJKzNC+QwVGdYchA==
+"@turbo/windows-64@2.10.8":
+  version "2.10.8"
+  resolved "https://registry.yarnpkg.com/@turbo/windows-64/-/windows-64-2.10.8.tgz#451c3b5421c9ce573c764b1efacae5ad4d1312ee"
+  integrity sha512-znnLO1haJPYTHoKMKwlAvlkjRiYbbhBzME6wIGaMd+fwir23U6jVd1ecaTWWi1fbnRVqxMfgDBKseQ/hLKb83g==
 
-"@turbo/windows-arm64@2.9.7":
-  version "2.9.7"
-  resolved "https://registry.yarnpkg.com/@turbo/windows-arm64/-/windows-arm64-2.9.7.tgz#e678d73fdbcbb12a679403fe7ba070fb67f37810"
-  integrity sha512-xBBgxCC5PK2+WZ1PPRZdp+aJ0bMBcEbweXWux3RUHJvX9ZodcoQySkrW6qt+ahb+uk8ZjyQodLfDwtVSoYds1w==
+"@turbo/windows-arm64@2.10.8":
+  version "2.10.8"
+  resolved "https://registry.yarnpkg.com/@turbo/windows-arm64/-/windows-arm64-2.10.8.tgz#5661ca9b75713aece06d319493e48a366a4cd05c"
+  integrity sha512-VN30vh3b3Czh2WzYHNTfF1FE0YMZ5aHsLO8dBMGHJewA6792wX6iJR8ZxlzFW6WdOu0gEAKIvlYhfyT81Wkm4Q==
 
 "@types/esrecurse@^4.3.1":
   version "4.3.1"
@@ -216,102 +216,212 @@
   resolved "https://registry.yarnpkg.com/@types/json5/-/json5-0.0.29.tgz#ee28707ae94e11d2b827bcbe5270bcea7f3e71ee"
   integrity sha512-dRLjCWHYg4oaA77cxO64oO+7JwCwnIzkZPdrrC71jQmQtlhM556pwKo5bUzqvZndkVbeFLIIi+9TC40JNF5hNQ==
 
-"@typescript-eslint/eslint-plugin@^8.59.1":
-  version "8.59.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.59.1.tgz#781bc6f9002982cfaf75a185240e24ad7276628a"
-  integrity sha512-BOziFIfE+6osHO9FoJG4zjoHUcvI7fTNBSpdAwrNH0/TLvzjsk2oo8XSSOT2HhqUyhZPfHv4UOffoJ9oEEQ7Ag==
+"@typescript-eslint/eslint-plugin@^8.65.0":
+  version "8.65.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.65.0.tgz#0a58df6fea8c0bf6b396f518077099bc8b762bb5"
+  integrity sha512-IEgob78X12rHpUmtcwFsXhZdVGJtwTVP8FiCLZkR6GlYVrl2PcuB+KhCE5BlVC/eQpQnu8WXRtkHZuPar+gCRA==
   dependencies:
     "@eslint-community/regexpp" "^4.12.2"
-    "@typescript-eslint/scope-manager" "8.59.1"
-    "@typescript-eslint/type-utils" "8.59.1"
-    "@typescript-eslint/utils" "8.59.1"
-    "@typescript-eslint/visitor-keys" "8.59.1"
+    "@typescript-eslint/scope-manager" "8.65.0"
+    "@typescript-eslint/type-utils" "8.65.0"
+    "@typescript-eslint/utils" "8.65.0"
+    "@typescript-eslint/visitor-keys" "8.65.0"
     ignore "^7.0.5"
     natural-compare "^1.4.0"
     ts-api-utils "^2.5.0"
 
-"@typescript-eslint/parser@^8.59.1":
-  version "8.59.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-8.59.1.tgz#835d20a62350659a082a1ae2a60b822c40488905"
-  integrity sha512-HDQH9O/47Dxi1ceDhBXdaldtf/WV9yRYMjbjCuNk3qnaTD564qwv61Y7+gTxwxRKzSrgO5uhtw584igXVuuZkA==
+"@typescript-eslint/parser@^8.65.0":
+  version "8.65.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-8.65.0.tgz#5295c1058c0a1dd746ef28baaf9c0341dbdf03dc"
+  integrity sha512-CZ4nMxWwgu1HEEFNkeaCptra9QCtkmKdgf3sWh1rl1trIhmxLilgTV4cwcbQ4wemnT4sWQN8CaKOmdYx+g2gMA==
   dependencies:
-    "@typescript-eslint/scope-manager" "8.59.1"
-    "@typescript-eslint/types" "8.59.1"
-    "@typescript-eslint/typescript-estree" "8.59.1"
-    "@typescript-eslint/visitor-keys" "8.59.1"
+    "@typescript-eslint/scope-manager" "8.65.0"
+    "@typescript-eslint/types" "8.65.0"
+    "@typescript-eslint/typescript-estree" "8.65.0"
+    "@typescript-eslint/visitor-keys" "8.65.0"
     debug "^4.4.3"
 
-"@typescript-eslint/project-service@8.59.1":
-  version "8.59.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/project-service/-/project-service-8.59.1.tgz#49efe87c37ef84262f23df8bf62fdc56698ca6fe"
-  integrity sha512-+MuHQlHiEr00Of/IQbE/MmEoi44znZHbR/Pz7Opq4HryUOlRi+/44dro9Ycy8Fyo+/024IWtw8m4JUMCGTYxDg==
+"@typescript-eslint/project-service@8.65.0":
+  version "8.65.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/project-service/-/project-service-8.65.0.tgz#65fbbc9a1591abffaeab5513200f848271cb0aa5"
+  integrity sha512-SxnPhbTsGahizDgbu7oqFH/xVtzIqMd/s+WtnSxNxJZJpLbdT5IPdzg8EZxO3+PoKahXmwJLeNQOpKJb3/bi7Q==
   dependencies:
-    "@typescript-eslint/tsconfig-utils" "^8.59.1"
-    "@typescript-eslint/types" "^8.59.1"
+    "@typescript-eslint/tsconfig-utils" "^8.65.0"
+    "@typescript-eslint/types" "^8.65.0"
     debug "^4.4.3"
 
-"@typescript-eslint/scope-manager@8.59.1":
-  version "8.59.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-8.59.1.tgz#ed90d054fc3db2d0c81464db3a953a94fb85bb58"
-  integrity sha512-LwuHQI4pDOYVKvmH2dkaJo6YZCSgouVgnS/z7yBPKBMvgtBvyLqiLy9Z6b7+m/TRcX1NFYUqZetI5Y+aT4GEfg==
+"@typescript-eslint/scope-manager@8.65.0":
+  version "8.65.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-8.65.0.tgz#9547202ce7e608e7b6283df585703b980a0ea70d"
+  integrity sha512-Esbl8OSYiVxBokYgWPf7VVWg/BE798wXhimnn9ML9Pt5qoDf8bfQlgjlKXR/k98+AcNzlLKYrpCcrcuZ9DZLgg==
   dependencies:
-    "@typescript-eslint/types" "8.59.1"
-    "@typescript-eslint/visitor-keys" "8.59.1"
+    "@typescript-eslint/types" "8.65.0"
+    "@typescript-eslint/visitor-keys" "8.65.0"
 
-"@typescript-eslint/tsconfig-utils@8.59.1", "@typescript-eslint/tsconfig-utils@^8.59.1":
-  version "8.59.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.59.1.tgz#ba2a779a444f1d5cb92a606f9b209d239fd4cab1"
-  integrity sha512-/0nEyPbX7gRsk0Uwfe4ALwwgxuA66d/l2mhRDNlAvaj4U3juhUtJNq0DsY8M2AYwwb9rEq2hrC3IcIcEt++iJA==
+"@typescript-eslint/tsconfig-utils@8.65.0":
+  version "8.65.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.65.0.tgz#36f168fcdbb1295f7446ff0379667f98c3cf1bf3"
+  integrity sha512-j6GzGqCiRdA7Qhur2VVmKZAkBLfnHFQfx4TaJGL9RMveZqCo48jSHHO0DTgizEnGhtWnqmbtCUSrqSkdiY/0Hg==
 
-"@typescript-eslint/type-utils@8.59.1":
-  version "8.59.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/type-utils/-/type-utils-8.59.1.tgz#9c83d3f2ed9187a815e8120f72c08317e513e409"
-  integrity sha512-klWPBR2ciQHS3f++ug/mVnWKPjBUo7icEL3FAO1lhAR1Z1i5NQYZ1EannMSRYcq5qCv5wNALlXr6fksRHyYl7w==
+"@typescript-eslint/tsconfig-utils@^8.65.0":
+  version "8.66.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.66.0.tgz#3a89066c507aa30541dc176804685b4b444e1e52"
+  integrity sha512-9D5gLYZG4rOjcoag8MQ/fWI8WqA9wcPDyOGyWtWFhvM1lHRbliqUSPIY5J3zqCU1tvSwzXxnnjhQhz5Ne7mJ4g==
+
+"@typescript-eslint/type-utils@8.65.0":
+  version "8.65.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/type-utils/-/type-utils-8.65.0.tgz#d316d7522d93cff4cd14f305e02f3df2d804f9c1"
+  integrity sha512-YjaZ7PRI5qY7ax2L3PbvX0rRyGtipAReCWs0mhhDBHjH/vl0g0BonaGXrKdKpMbIIsMIwDgbk/xzkBTyAltS5g==
   dependencies:
-    "@typescript-eslint/types" "8.59.1"
-    "@typescript-eslint/typescript-estree" "8.59.1"
-    "@typescript-eslint/utils" "8.59.1"
+    "@typescript-eslint/types" "8.65.0"
+    "@typescript-eslint/typescript-estree" "8.65.0"
+    "@typescript-eslint/utils" "8.65.0"
     debug "^4.4.3"
     ts-api-utils "^2.5.0"
 
-"@typescript-eslint/types@8.59.1", "@typescript-eslint/types@^8.59.1":
-  version "8.59.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-8.59.1.tgz#c1d014d3f03a97e0113a8899fc9d4e45a7fb0ca9"
-  integrity sha512-ZDCjgccSdYPw5Bxh+my4Z0lJU96ZDN7jbBzvmEn0FZx3RtU1C7VWl6NbDx94bwY3V5YsgwRzJPOgeY2Q/nLG8A==
+"@typescript-eslint/types@8.65.0":
+  version "8.65.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-8.65.0.tgz#3e86738416a777c8b8925ab46745f48ecf904c9f"
+  integrity sha512-JSSwWNy+H0E/01jJEM+hrX6N0OFDzFzeIhHFSAS01tlVaevpG8cFyYRPhS5yjGOvBUx3sqQHVMjCL1CAZZMxBg==
 
-"@typescript-eslint/typescript-estree@8.59.1":
-  version "8.59.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-8.59.1.tgz#4391fadf98a22c869c5b6522dbf4e491e53e351a"
-  integrity sha512-OUd+vJS05sSkOip+BkZ/2NS8RMxrAAJemsC6vU3kmfLyeaJT0TftHkV9mcx2107MmsBVXXexhVu4F0TZXyMl4g==
+"@typescript-eslint/types@^8.65.0":
+  version "8.66.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-8.66.0.tgz#3cacab94d3b564c1d48c56eb37b89f89a6d48479"
+  integrity sha512-H6gcYaSDOyvL3AD/jHUtUFo2jqGgn/F6nuyuZSu0QTesxL+cP4dQoIMrODRofuJC09g64+WgZ6tE19Y1N2YIFQ==
+
+"@typescript-eslint/typescript-estree@8.65.0":
+  version "8.65.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-8.65.0.tgz#f1f514808f6aa713e2d678ae8ff592a65e1632af"
+  integrity sha512-JboAE2swaYt4tb1fHhHTABE2K+OLy09XfcTbhnk4Pw96f9dd2e9iYsJ28gBggHlo5z5x1rkyWvcPoTuNTd4oGg==
   dependencies:
-    "@typescript-eslint/project-service" "8.59.1"
-    "@typescript-eslint/tsconfig-utils" "8.59.1"
-    "@typescript-eslint/types" "8.59.1"
-    "@typescript-eslint/visitor-keys" "8.59.1"
+    "@typescript-eslint/project-service" "8.65.0"
+    "@typescript-eslint/tsconfig-utils" "8.65.0"
+    "@typescript-eslint/types" "8.65.0"
+    "@typescript-eslint/visitor-keys" "8.65.0"
     debug "^4.4.3"
     minimatch "^10.2.2"
     semver "^7.7.3"
     tinyglobby "^0.2.15"
     ts-api-utils "^2.5.0"
 
-"@typescript-eslint/utils@8.59.1":
-  version "8.59.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/utils/-/utils-8.59.1.tgz#cf6204d69701bbbc5b150f98c18aeef0a42c10bd"
-  integrity sha512-3pIeoXhCeYH9FSCBI8P3iNwJlGuzPlYKkTlen2O9T1DSeeg8UG8jstq6BLk+Mda0qup7mgk4z4XL4OzRaxZ8LA==
+"@typescript-eslint/utils@8.65.0":
+  version "8.65.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/utils/-/utils-8.65.0.tgz#afedd974a0c8deeef553b509df5800bafd615a72"
+  integrity sha512-gXiwIHsYreboxeJucHKPvgwl7dXt50mF8s1/c00cP/WoVTyWKFdtfhRWwZiXYFU5H2O8vVoSLNrexFZjYS/SGA==
   dependencies:
     "@eslint-community/eslint-utils" "^4.9.1"
-    "@typescript-eslint/scope-manager" "8.59.1"
-    "@typescript-eslint/types" "8.59.1"
-    "@typescript-eslint/typescript-estree" "8.59.1"
+    "@typescript-eslint/scope-manager" "8.65.0"
+    "@typescript-eslint/types" "8.65.0"
+    "@typescript-eslint/typescript-estree" "8.65.0"
 
-"@typescript-eslint/visitor-keys@8.59.1":
-  version "8.59.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-8.59.1.tgz#b5cba576287a3eeb0b400b62813189abcc3f976a"
-  integrity sha512-LdDNl6C5iJExcM0Yh0PwAIBb9PrSiCsWamF/JyEZawm3kFDnRoaq3LGE4bpyRao/fWeGKKyw7icx0YxrLFC5Cg==
+"@typescript-eslint/visitor-keys@8.65.0":
+  version "8.65.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-8.65.0.tgz#e3704c13cb4a1c22454c1abf28ff4737e15018c6"
+  integrity sha512-8C71BQkGjiMmXtop7pHVJu1l2NNShFdkCyD6a2ezzs5vU/L3LRtb69EtcteFwz0mYMPzIgOw0n6OV4VBUWZd7A==
   dependencies:
-    "@typescript-eslint/types" "8.59.1"
+    "@typescript-eslint/types" "8.65.0"
     eslint-visitor-keys "^5.0.0"
 
+"@typescript/typescript-aix-ppc64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-aix-ppc64/-/typescript-aix-ppc64-7.0.2.tgz#cdc7ce81d60f1e09034960ddfb1fb880d7a776b6"
+  integrity sha512-MTKKkWB7p/0E9xi1d1tHtZ5PiLkGEMIq88pK2CubZjOsLtYTLqhgIgi6zepFa+9GHZ6h05NMCkQxGKiPXMxXtQ==
+
+"@typescript/typescript-darwin-arm64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-darwin-arm64/-/typescript-darwin-arm64-7.0.2.tgz#a55fdfcfa58df58d27db2237cde6a5c1e35a7235"
+  integrity sha512-gowzar9MwS/aRWp6f3a4KUqzRjAZjOsmGNCM6LcTgXum+dBfgsBVMN+AgvOCCbguXyick6LJhpBszxMebJ8syA==
+
+"@typescript/typescript-darwin-x64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-darwin-x64/-/typescript-darwin-x64-7.0.2.tgz#38d1c9172800a91d707bec64d2a370a016634db4"
+  integrity sha512-SZ9xZInqApNlNGc9s0W1VSsktYSOe9cFqNOIqmN1Gs8SmkjKZYFt017G4VwPxASInODuAdbTW7sXiFUf893RgA==
+
+"@typescript/typescript-freebsd-arm64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-freebsd-arm64/-/typescript-freebsd-arm64-7.0.2.tgz#f1ff8810030b35d2b5be0db6a2dc650460ea94fa"
+  integrity sha512-W5NH4y/J0plIIS5b2xvTEkU7JFxyqdMAOgf+Ilhl0vHQXKO5dZoxd+C/jEtq56c4F3wk71RB4BMRQ2XdI+bwYQ==
+
+"@typescript/typescript-freebsd-x64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-freebsd-x64/-/typescript-freebsd-x64-7.0.2.tgz#3d86b03f353c5b1ba95162eb6ce35533bfc294bd"
+  integrity sha512-UMGDx5sTpzNw3WiPebH7l90IWfJggEd+egHt/q6p7/Cm3zqoV7VxkGXt+3DxPIw8CcmvAB0j3sVVfbhX+M4Tpw==
+
+"@typescript/typescript-linux-arm64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-linux-arm64/-/typescript-linux-arm64-7.0.2.tgz#d9334d96d6dac6ff85da9c865588948de939e91f"
+  integrity sha512-Qh4eU4/y3yDjnfjjyPYihMj5/ODIlmt+Bzu17OI+fiSRDW57QmU5SiN63exPRNJPKUzcc1INa1NXdrJ+MqHjUQ==
+
+"@typescript/typescript-linux-arm@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-linux-arm/-/typescript-linux-arm-7.0.2.tgz#ad94b41e1aee2a4dcc6a298c7b67c43345fde32e"
+  integrity sha512-gffT3xPz9sR7j/YJExkyPntrI0P2EP9XbOyWzth2/Gs0RstK+90RBcO0ncXoXy/beYll1SXw846Nf2zdnEz0QQ==
+
+"@typescript/typescript-linux-loong64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-linux-loong64/-/typescript-linux-loong64-7.0.2.tgz#2965aee4fc873360139d893daafe6397a29138ad"
+  integrity sha512-uEHck9i8hoAzXPiYRib1O7miOnz23SxIeVl6F4LXox+qov1K35jHcEW6VHKvZI+pyvl7fZEP4MCU5LYvIq1GuQ==
+
+"@typescript/typescript-linux-mips64el@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-linux-mips64el/-/typescript-linux-mips64el-7.0.2.tgz#1a887a311bed3a833f80bfd4a9ed37c271936cf0"
+  integrity sha512-R4KvAMnE43W5Qeqb0Ly56O3mWMWIAgsMyz36DCaycd5nbg/9kzm0liw3JocfRqyJY0KPmzFjbswozXyW0DnIYA==
+
+"@typescript/typescript-linux-ppc64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-linux-ppc64/-/typescript-linux-ppc64-7.0.2.tgz#8b63c9b2f445b393eb4e43ec21da225dade3577d"
+  integrity sha512-DORx5b3sd/4S7eayxm4FQv+A7CrkUIGRaHiwI8oiHTAI1fAPWhF4J0vAlkC8biAlHSVVwxMQ3tjZ2/DVbnQiiA==
+
+"@typescript/typescript-linux-riscv64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-linux-riscv64/-/typescript-linux-riscv64-7.0.2.tgz#b6e8a35c289b3ea97a92a41d461aaeed0d3b36e1"
+  integrity sha512-wf0jqEDOjrPRnKwYRyyJDRo11KMbvMFrU+q4zqKyChODBzvlkbhNQfKvLxQCcwTpdDaXSHZTVuh0JoCrKCUMHQ==
+
+"@typescript/typescript-linux-s390x@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-linux-s390x/-/typescript-linux-s390x-7.0.2.tgz#2ef96693be4861f6d17965427e5b009cbbed1a3e"
+  integrity sha512-IkwJc3L7yhytWd/ewjyxNDfOmswCm9GWMJT/ue/dU4aZNbwZeYAetq42VyLmsmSjvoX7z74X6ZaYCtzAr0EuGw==
+
+"@typescript/typescript-linux-x64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-linux-x64/-/typescript-linux-x64-7.0.2.tgz#73269cb0baba50aea0ca060445a6b88e583f1ce2"
+  integrity sha512-EYdf2cNg7rgCWJnxCdJ+F3V39O8ihb37eHAu1LK8oAFizgTQbPOK7zHHXbPt8rX24COqODXeI3sIf0fCXG7H/A==
+
+"@typescript/typescript-netbsd-arm64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-netbsd-arm64/-/typescript-netbsd-arm64-7.0.2.tgz#3a3649f97fafa210b4e6e3798c15e06605c8a901"
+  integrity sha512-+polYF4MF04aPpO5FTkHran9yUQDSXqy5GiSDKpsll5jy3l3+g9QLhpf39T+ePtefhXLOGrLl0QIjkQP6VnelA==
+
+"@typescript/typescript-netbsd-x64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-netbsd-x64/-/typescript-netbsd-x64-7.0.2.tgz#47ec59491a40c470d2807dc4d2b825528fd979ab"
+  integrity sha512-8YIT0EHM/3dq10ZOVF/A7pc/YSMtbcecct4rWtexrnSCHOPcpC2KTLXfTCR6vDpnSiY12heNb1GiN/wu+T/FyA==
+
+"@typescript/typescript-openbsd-arm64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-openbsd-arm64/-/typescript-openbsd-arm64-7.0.2.tgz#796be8da0bd989d8a3fb96f2801e38a8365b4baf"
+  integrity sha512-APT8+ClYnuYm1u9+kgGXoMj2VzWzcymwh2gNSQVySHfkRDGOTVkoWLjCmOQSaO+PoqQ57B0flRp9SA+7GnnkzQ==
+
+"@typescript/typescript-openbsd-x64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-openbsd-x64/-/typescript-openbsd-x64-7.0.2.tgz#d37fe2a729eb942c076c454ee7f1815faf7d560f"
+  integrity sha512-yX7s+Q0Dln0Dt9tEzZsAjXXR/+ytBM7AlglaqyeMPxQszJ1JhlJdZ6jLA+IzldHtflX81em7lDao1xXu+aRRkg==
+
+"@typescript/typescript-sunos-x64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-sunos-x64/-/typescript-sunos-x64-7.0.2.tgz#aba8d3464c3565a7044789baba96916bd4ab2c88"
+  integrity sha512-dLJDGaLZ1D4HPQn62u1n8mBDkJREwMsAkCdkwd4Ieqw+x3TUyTsqY0YiBCtE6H6OzzgGk3iuZ3vFWRS+E8/d1g==
+
+"@typescript/typescript-win32-arm64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-win32-arm64/-/typescript-win32-arm64-7.0.2.tgz#b9de50a17196383f62620b5f9d0a2f34ad3b60d7"
+  integrity sha512-Gyl1Vy6OsWesLzmq+EP0Fb7b4Nid5232AvcA2SFcdYreldpNtYFFofPjnt62y9hQy7VTaZp65ICJjuAQRaVcIQ==
+
+"@typescript/typescript-win32-x64@7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@typescript/typescript-win32-x64/-/typescript-win32-x64-7.0.2.tgz#cf3b7b0d6ce5635daca4c8e01c189cdcde47ec3c"
+  integrity sha512-0BQ3HkAHHlKLSp1qRvf3SUhGpGsDuhB/jgFw75guyqbxJqEaS0Cw/VFO8i2nHglJUzQCRtMMR/IBAKE3ETMC4g==
+
 acorn-jsx@^5.3.2:
   version "5.3.2"
   resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-5.3.2.tgz#7ed5bb55908b3b2f1bc55c6af1653bada7f07937"
@@ -337,11 +447,6 @@ ajv@^6.14.0:
     json-schema-traverse "^0.4.1"
     uri-js "^4.2.2"
 
-ansi-styles@^5.0.0:
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-5.2.0.tgz#07449690ad45777d1924ac2abb2fc8895dba836b"
-  integrity sha512-Cxwpt2SfTzTtXcfOlzGEee8O+c+MmUgGrNiBcXnuWxuFJHe6a5Hz7qwhwe5OgaSYI0IJvkLqWX1ASG+cJOkEiA==
-
 argparse@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/argparse/-/argparse-2.0.1.tgz#246f50f3ca78a3240f6c997e8a9bd1eac49e4b38"
@@ -452,10 +557,10 @@ brace-expansion@^1.1.7:
     balanced-match "^1.0.0"
     concat-map "0.0.1"
 
-brace-expansion@^5.0.2:
-  version "5.0.2"
-  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-5.0.2.tgz#b6c16d0791087af6c2bc463f52a8142046c06b6f"
-  integrity sha512-Pdk8c9poy+YhOgVWw1JNN22/HcivgKWwpxKq04M/jTmHyCZn12WPJebZxdjSa5TmBqISrUSgNYU3eRORljfCCw==
+brace-expansion@^5.0.8:
+  version "5.0.9"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-5.0.9.tgz#7c72438809b5fa5babf54199a1f1c281a6984fcf"
+  integrity sha512-ScQ4IuvIEF1TMlP7Zt+vjJ//9zlPb2SDcxWxM3bk8s6t6GGdJ7KO1dCcTidOPJKePW30LE/2cT7wCyPho9/Wxg==
   dependencies:
     balanced-match "^4.0.2"
 
@@ -490,11 +595,6 @@ callsites@^3.0.0:
   resolved "https://registry.yarnpkg.com/callsites/-/callsites-3.1.0.tgz#b3630abd8943432f54b3f0519238e33cd7df2f73"
   integrity sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==
 
-camelcase@6:
-  version "6.3.0"
-  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-6.3.0.tgz#5685b95eb209ac9c0c177467778c9c84df58ba9a"
-  integrity sha512-Gmy6FhYlCY7uOElZUSbxo2UCDH8owEk996gkbrpsgGtrJLM3J7jGxl9Ic7Qwwj4ivOE5AWZWRMecDdF7hqGjFA==
-
 concat-map@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
@@ -550,11 +650,6 @@ debug@^4.3.1, debug@^4.3.2, debug@^4.4.3:
   dependencies:
     ms "^2.1.3"
 
-decamelize@1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
-  integrity sha512-z2S+W9X73hAUUki+N+9Za2lBlun89zigOyGrsax+KUQ6wKW4ZoWpEYBkGhQjwAjjDCkWxhY0VKEhk8wzY7F5cA==
-
 deep-is@^0.1.3:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.4.tgz#a6f2dce612fadd2ef1f519b73551f17e85199831"
@@ -753,13 +848,13 @@ eslint-plugin-no-instanceof@^1.0.1:
   resolved "https://registry.yarnpkg.com/eslint-plugin-no-instanceof/-/eslint-plugin-no-instanceof-1.0.1.tgz#5d9fc86d160df6991b654b294a62390207f1bb97"
   integrity sha512-zlqQ7EsfzbRO68uI+p8FIE7zYB4njs+nNbkNjSb5QmLi2et67zQLqSeaao5U9SpnlZTTJC87nS2oyHo2ACtajw==
 
-eslint-plugin-prettier@^5.5.5:
-  version "5.5.5"
-  resolved "https://registry.yarnpkg.com/eslint-plugin-prettier/-/eslint-plugin-prettier-5.5.5.tgz#9eae11593faa108859c26f9a9c367d619a0769c0"
-  integrity sha512-hscXkbqUZ2sPithAuLm5MXL+Wph+U7wHngPBv9OMWwlP8iaflyxpjTYZkmdgB4/vPIhemRlBEoLrH7UC1n7aUw==
+eslint-plugin-prettier@^5.5.6:
+  version "5.5.6"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-prettier/-/eslint-plugin-prettier-5.5.6.tgz#363ebe4d769bce157ccdd8129ce3efd91dc62564"
+  integrity sha512-ifetmTcxWfz+4qRW3pH/ujdTq2jQIj59AxJMIN26K5avYgU8dxycUETQonWiW+wPrYXA0j3Try0l1CnwVQtDqQ==
   dependencies:
     prettier-linter-helpers "^1.0.1"
-    synckit "^0.11.12"
+    synckit "^0.11.13"
 
 eslint-scope@^9.1.2:
   version "9.1.2"
@@ -786,17 +881,17 @@ eslint-visitor-keys@^5.0.0, eslint-visitor-keys@^5.0.1:
   resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-5.0.1.tgz#9e3c9489697824d2d4ce3a8ad12628f91e9f59be"
   integrity sha512-tD40eHxA35h0PEIZNeIjkHoDR4YjjJp34biM0mDvplBe//mB+IHCqHDGV7pxF+7MklTvighcCPPZC7ynWyjdTA==
 
-eslint@^10.2.1:
-  version "10.2.1"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-10.2.1.tgz#224b2a6caeb34473eddcf918762363e2e063222a"
-  integrity sha512-wiyGaKsDgqXvF40P8mDwiUp/KQjE1FdrIEJsM8PZ3XCiniTMXS3OHWWUe5FI5agoCnr8x4xPrTDZuxsBlNHl+Q==
+eslint@^10.8.0:
+  version "10.8.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-10.8.0.tgz#e6d19907a3f090a53a022261ba34c5ff6d04908b"
+  integrity sha512-nuKKvN+oIBO0koN7Tm7dlkmnkc21mtt0QJLwAKzjLq14y6lRTdVG36MZHJ8eQHwdJMwZbQNMlPOYedMq/oVJvQ==
   dependencies:
     "@eslint-community/eslint-utils" "^4.8.0"
     "@eslint-community/regexpp" "^4.12.2"
     "@eslint/config-array" "^0.23.5"
-    "@eslint/config-helpers" "^0.5.5"
+    "@eslint/config-helpers" "^0.7.0"
     "@eslint/core" "^1.2.1"
-    "@eslint/plugin-kit" "^0.7.1"
+    "@eslint/plugin-kit" "^0.7.2"
     "@humanfs/node" "^0.16.6"
     "@humanwhocodes/module-importer" "^1.0.1"
     "@humanwhocodes/retry" "^0.4.2"
@@ -818,7 +913,7 @@ eslint@^10.2.1:
     imurmurhash "^0.1.4"
     is-glob "^4.0.0"
     json-stable-stringify-without-jsonify "^1.0.1"
-    minimatch "^10.2.4"
+    minimatch "^10.2.5"
     natural-compare "^1.4.0"
     optionator "^0.9.3"
 
@@ -1290,10 +1385,10 @@ js-tiktoken@^1.0.12:
   dependencies:
     base64-js "^1.5.1"
 
-js-yaml@^4.1.1:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-4.1.1.tgz#854c292467705b699476e1a2decc0c8a3458806b"
-  integrity sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA==
+js-yaml@^4.3.0:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-4.3.1.tgz#01216c001d67f48e2cd560d708c7af21090a3848"
+  integrity sha512-CY6crGq313MX8GkwvB7tzgp99vjQxY1++5y10/BKN/GUfHqWaOGQMNZkBvqSzsZKWk/ijwHlWzzkLulsGHhjWQ==
   dependencies:
     argparse "^2.0.1"
 
@@ -1327,12 +1422,11 @@ keyv@^4.5.4:
     json-buffer "3.0.1"
 
 "langsmith@>=0.5.0 <1.0.0":
-  version "0.5.20"
-  resolved "https://registry.yarnpkg.com/langsmith/-/langsmith-0.5.20.tgz#4021847d2ccd5a86c5eb96060f9bb5f19f80eca5"
-  integrity sha512-ULhLM8RswvQDXufLtNtvclHrWCBx8Cb5UPI6lAZC+8Dq59iHsVPz/3Ac9khWNm1VIvChRsuykixD/WrmzuuA3Q==
+  version "0.7.1"
+  resolved "https://registry.yarnpkg.com/langsmith/-/langsmith-0.7.1.tgz#d721ad2e5211f9a5373e8a84eb4fed36b5621971"
+  integrity sha512-Wjk90UjNoY5cBHMlNAC/eZx5clI8jnjBOBW8uJu8+MWBtx0QesNjsUiLtjI+I3UnrpxFFpDqGXcnhBjH654Mqg==
   dependencies:
     p-queue "6.6.2"
-    uuid "10.0.0"
 
 levn@^0.4.1:
   version "0.4.1"
@@ -1354,12 +1448,12 @@ math-intrinsics@^1.1.0:
   resolved "https://registry.yarnpkg.com/math-intrinsics/-/math-intrinsics-1.1.0.tgz#a0dd74be81e2aa5c2f27e65ce283605ee4e2b7f9"
   integrity sha512-/IXtbwEk5HTPyEwyKX6hGkYXxM9nbj64B+ilVJnC/R6B0pH5G4V3b0pVbL7DBj4tkhBAppbQUlf6F6Xl9LHu1g==
 
-minimatch@^10.2.2, minimatch@^10.2.4:
-  version "10.2.4"
-  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-10.2.4.tgz#465b3accbd0218b8281f5301e27cedc697f96fde"
-  integrity sha512-oRjTw/97aTBN0RHbYCdtF1MQfvusSIBQM0IZEgzl6426+8jSC0nF1a/GmnVLpfB9yyr6g6FTqWqiZVbxrtaCIg==
+minimatch@^10.2.2, minimatch@^10.2.4, minimatch@^10.2.5:
+  version "10.2.6"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-10.2.6.tgz#fd956bbe0b77241e9f15ac5dccb1c638060968ef"
+  integrity sha512-vpLQEs+VLCr1nU0BXS07maYoFwlDAH0gngQuuttxIwutDFEMHq2blX+8vpgxDdK3J1PwjCJiep77OitTZ4Ll1A==
   dependencies:
-    brace-expansion "^5.0.2"
+    brace-expansion "^5.0.8"
 
 minimatch@^3.1.2, minimatch@^3.1.5:
   version "3.1.5"
@@ -1558,10 +1652,10 @@ prettier-linter-helpers@^1.0.1:
   dependencies:
     fast-diff "^1.1.2"
 
-prettier@^3.8.3:
-  version "3.8.3"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.8.3.tgz#560f2de55bf01b4c0503bc629d5df99b9a1d09b0"
-  integrity sha512-7igPTM53cGHMW8xWuVTydi2KO233VFiTNyF5hLJqpilHfmn8C8gPf+PS7dUT64YcXFbiMGZxS9pCSxL/Dxm/Jw==
+prettier@^3.9.6:
+  version "3.9.6"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.9.6.tgz#b3ea5146515d40fc53f18aa63f74dfab1e10dbf6"
+  integrity sha512-OpN0zzVdiaiAhxpuuj5efpIS4sY9j7bY6uR5mnj5yPzGkdkjNKSJeUThPb60Jw29QuAZgA4o+/iB49kFiaBX6g==
 
 punycode@^2.1.0:
   version "2.3.1"
@@ -1784,12 +1878,12 @@ supports-preserve-symlinks-flag@^1.0.0:
   resolved "https://registry.yarnpkg.com/supports-preserve-symlinks-flag/-/supports-preserve-symlinks-flag-1.0.0.tgz#6eda4bd344a3c94aea376d4cc31bc77311039e09"
   integrity sha512-ot0WnXS9fgdkgIcePe6RHNk1WA8+muPa6cSjeR3V8K27q9BB1rTE3R1p7Hv0z1ZyAc8s6Vvv8DIyWf681MAt0w==
 
-synckit@^0.11.12:
-  version "0.11.12"
-  resolved "https://registry.yarnpkg.com/synckit/-/synckit-0.11.12.tgz#abe74124264fbc00a48011b0d98bdc1cffb64a7b"
-  integrity sha512-Bh7QjT8/SuKUIfObSXNHNSK6WHo6J1tHCqJsuaFDP7gP0fkzSfTxI8y85JrppZ0h8l0maIgc2tfuZQ6/t3GtnQ==
+synckit@^0.11.13:
+  version "0.11.13"
+  resolved "https://registry.yarnpkg.com/synckit/-/synckit-0.11.13.tgz#062a5ea57d81befc35892f8254de5c567e97c80a"
+  integrity sha512-eNRKgb3z66Yp3D2CixVujOUvXLFUTij/zVnV8KRyvFdQwpz7I5DS8UfRkTeLzb64u+dkzDSdelE24izu+zSSUg==
   dependencies:
-    "@pkgr/core" "^0.2.9"
+    "@pkgr/core" "^0.3.6"
 
 tinyglobby@^0.2.15:
   version "0.2.15"
@@ -1814,17 +1908,17 @@ tsconfig-paths@^3.15.0:
     minimist "^1.2.6"
     strip-bom "^3.0.0"
 
-turbo@^2.9.7:
-  version "2.9.7"
-  resolved "https://registry.yarnpkg.com/turbo/-/turbo-2.9.7.tgz#da6d5a821f0bde5174e1a55af6690dad5c2fb004"
-  integrity sha512-epxzqVO2s0IxcSWcgb+qKrtco8isfe7g3VtiS6hkYnEK4A9XQDZbrtavQ6MtWR1KoQn+1fUomaQth2rfRHlUlg==
+turbo@^2.10.8:
+  version "2.10.8"
+  resolved "https://registry.yarnpkg.com/turbo/-/turbo-2.10.8.tgz#09457cb7db79710586da455a29bccc05f15b1b72"
+  integrity sha512-9+8YX5QOkGXzZxcIykTHgaooRHGMWO+jfdyRK0o+rN0U7hBIig2MrJ8r/aNzIPDPhdA73SGb0O+tIztaModTMg==
   optionalDependencies:
-    "@turbo/darwin-64" "2.9.7"
-    "@turbo/darwin-arm64" "2.9.7"
-    "@turbo/linux-64" "2.9.7"
-    "@turbo/linux-arm64" "2.9.7"
-    "@turbo/windows-64" "2.9.7"
-    "@turbo/windows-arm64" "2.9.7"
+    "@turbo/darwin-64" "2.10.8"
+    "@turbo/darwin-arm64" "2.10.8"
+    "@turbo/linux-64" "2.10.8"
+    "@turbo/linux-arm64" "2.10.8"
+    "@turbo/windows-64" "2.10.8"
+    "@turbo/windows-arm64" "2.10.8"
 
 type-check@^0.4.0, type-check@~0.4.0:
   version "0.4.0"
@@ -1878,10 +1972,31 @@ typed-array-length@^1.0.7:
     possible-typed-array-names "^1.0.0"
     reflect.getprototypeof "^1.0.6"
 
-typescript@^5.9.3:
-  version "5.9.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.9.3.tgz#5b4f59e15310ab17a216f5d6cf53ee476ede670f"
-  integrity sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==
+typescript@^7.0.2:
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-7.0.2.tgz#9ec773d7954a8c182c17cc5bbd575aa28bc51582"
+  integrity sha512-8FYau96o3NKOhbjKi/qNvG/W5jhzxkbdm5sj9AbZ/5T5sWqn3hJgLfGx27sRKZWTvyzCP8dLRBTf5tBTSRVUNA==
+  optionalDependencies:
+    "@typescript/typescript-aix-ppc64" "7.0.2"
+    "@typescript/typescript-darwin-arm64" "7.0.2"
+    "@typescript/typescript-darwin-x64" "7.0.2"
+    "@typescript/typescript-freebsd-arm64" "7.0.2"
+    "@typescript/typescript-freebsd-x64" "7.0.2"
+    "@typescript/typescript-linux-arm" "7.0.2"
+    "@typescript/typescript-linux-arm64" "7.0.2"
+    "@typescript/typescript-linux-loong64" "7.0.2"
+    "@typescript/typescript-linux-mips64el" "7.0.2"
+    "@typescript/typescript-linux-ppc64" "7.0.2"
+    "@typescript/typescript-linux-riscv64" "7.0.2"
+    "@typescript/typescript-linux-s390x" "7.0.2"
+    "@typescript/typescript-linux-x64" "7.0.2"
+    "@typescript/typescript-netbsd-arm64" "7.0.2"
+    "@typescript/typescript-netbsd-x64" "7.0.2"
+    "@typescript/typescript-openbsd-arm64" "7.0.2"
+    "@typescript/typescript-openbsd-x64" "7.0.2"
+    "@typescript/typescript-sunos-x64" "7.0.2"
+    "@typescript/typescript-win32-arm64" "7.0.2"
+    "@typescript/typescript-win32-x64" "7.0.2"
 
 unbox-primitive@^1.1.0:
   version "1.1.0"
@@ -1900,16 +2015,6 @@ uri-js@^4.2.2:
   dependencies:
     punycode "^2.1.0"
 
-uuid@10.0.0, uuid@^10.0.0:
-  version "10.0.0"
-  resolved "https://registry.yarnpkg.com/uuid/-/uuid-10.0.0.tgz#5a95aa454e6e002725c79055fd42aaba30ca6294"
-  integrity sha512-8XkAphELsDnEGrDxUOHB3RGvXz6TeuYSGEZBOjtTtPm2lwhGBjLgOzLHB63IUWfBpNucQjND6d3AOudO+H3RWQ==
-
-uuid@^13.0.0:
-  version "13.0.0"
-  resolved "https://registry.yarnpkg.com/uuid/-/uuid-13.0.0.tgz#263dc341b19b4d755eb8fe36b78d95a6b65707e8"
-  integrity sha512-XQegIaBTVUjSHliKqcnFqYypAd4S+WCYt5NIeRs6w/UAry7z8Y9j5ZwRRL4kzq9U3sD6v+85er9FvkEaBpji2w==
-
 which-boxed-primitive@^1.1.0, which-boxed-primitive@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/which-boxed-primitive/-/which-boxed-primitive-1.1.1.tgz#d76ec27df7fa165f18d5808374a5fe23c29b176e"

libs/cli/langgraph_cli/__init__.py

@@ -1 +1 @@
-__version__ = "0.4.25"
+__version__ = "0.4.31"

libs/cli/langgraph_cli/cli.py

@@ -159,7 +159,14 @@ OPT_POSTGRES_URI = click.option(
 OPT_API_VERSION = click.option(
     "--api-version",
     type=str,
-    help="API server version to use for the base image. If unspecified, the latest version will be used.",
+    help=(
+        "API server version to use for the base image. If unspecified, the "
+        "latest stable version will be used. Compatible ranges like "
+        "~=0.11.0.dev5 stay on 0.11.0.dev5 while only newer dev builds exist, "
+        "then resolve to the newest matching rc or stable release, for example "
+        "0.11.0rc1 or 0.11.0. Stable-floating ranges like >~=0.11.0.dev5 "
+        "can also pick up future stable releases, for example 0.12.0."
+    ),
 )
 
 OPT_ENGINE_RUNTIME_MODE = click.option(
@@ -724,6 +731,30 @@ def dockerfile(
     default="WARNING",
     help="Set the log level for the API server.",
 )
+@click.option(
+    "--ssl-certfile",
+    type=click.Path(
+        exists=True,
+        file_okay=True,
+        dir_okay=False,
+        resolve_path=True,
+        path_type=pathlib.Path,
+    ),
+    default=None,
+    help="Path to an SSL certificate file for serving the development server over HTTPS.",
+)
+@click.option(
+    "--ssl-keyfile",
+    type=click.Path(
+        exists=True,
+        file_okay=True,
+        dir_okay=False,
+        resolve_path=True,
+        path_type=pathlib.Path,
+    ),
+    default=None,
+    help="Path to an SSL key file for serving the development server over HTTPS.",
+)
 @cli.command(
     "dev",
     help="🏃‍♀️‍➡️ Run LangGraph API server in development mode with hot reloading and debugging support",
@@ -742,8 +773,20 @@ def dev(
     allow_blocking: bool,
     tunnel: bool,
     server_log_level: str,
+    ssl_certfile: pathlib.Path | None,
+    ssl_keyfile: pathlib.Path | None,
 ):
     """CLI entrypoint for running the LangGraph API server."""
+    if (ssl_certfile is None) != (ssl_keyfile is None):
+        raise click.UsageError(
+            "Both --ssl-certfile and --ssl-keyfile must be provided to enable HTTPS."
+        )
+
+    if ssl_certfile and ssl_keyfile and tunnel:
+        raise click.UsageError(
+            "Cannot use --tunnel with SSL options. Please choose either to serve over HTTPS or to expose via a tunnel, but not both."
+        )
+
     try:
         from langgraph_api.cli import run_server  # type: ignore
     except ImportError:
@@ -814,6 +857,8 @@ def dev(
         server_level=server_log_level,
         checkpointer=config_json.get("checkpointer"),
         disable_persistence=config_json.get("disable_persistence", False),
+        ssl_certfile=ssl_certfile,
+        ssl_keyfile=ssl_keyfile,
     )
 
 

libs/cli/langgraph_cli/config.py

@@ -9,6 +9,7 @@ from collections import Counter
 from typing import Literal, NamedTuple
 
 import click
+import httpx
 
 from langgraph_cli.schemas import Config, Distros
 from langgraph_cli.uv_lock import python_config_to_docker_uv_lock
@@ -35,6 +36,37 @@ DISALLOWED_BUILD_COMMAND_CHARS = [
 # This blocks background execution (cmd &) while allowing command
 # chaining (cmd1 && cmd2) which is common in build commands.
 _SINGLE_AMPERSAND_RE = re.compile(r"(?<!&)&(?:&&)*(?!&)")
+_API_VERSION_PATTERN = re.compile(
+    r"^(?P<major>\d+)"
+    r"(?:\.(?P<minor>\d+))?"
+    r"(?:\.(?P<patch>\d+))?"
+    r"(?:(?:\.|)(?:[A-Za-z][0-9A-Za-z]*))?$"
+)
+_API_VERSION_RANGE_PATTERN = re.compile(r"^(?P<operator>~=|>~=)\s*(?P<version>.+)$")
+_API_VERSION_PART_PATTERN = re.compile(
+    r"^(?P<major>\d+)"
+    r"(?:\.(?P<minor>\d+))?"
+    r"(?:\.(?P<patch>\d+))?"
+    r"(?:(?:\.|)(?P<pre>dev|rc)(?P<pre_n>\d+))?$"
+)
+
+
+class _ParsedApiVersion(NamedTuple):
+    release: tuple[int, ...]
+    prerelease: str | None
+    prerelease_number: int
+
+
+class _ApiVersionRange(NamedTuple):
+    floor: _ParsedApiVersion
+    allow_future_stable: bool
+
+
+_PRERELEASE_ORDER = {
+    "dev": 0,
+    "rc": 1,
+    None: 2,
+}
 
 
 def has_disallowed_build_command_content(command: str) -> bool:
@@ -123,6 +155,145 @@ def _parse_node_version(version_str: str) -> int:
         ) from None
 
 
+def _parse_api_version_parts(version_str: str) -> tuple[int, ...]:
+    """Parse an API version into numeric components.
+
+    Supports optional prerelease suffixes, e.g. `0.9.0rc1`.
+    """
+    version_core = version_str.split("-", 1)[0]
+    match = _API_VERSION_PATTERN.fullmatch(version_core)
+    if not match:
+        raise ValueError("Version must be major or major.minor or major.minor.patch.")
+    return tuple(int(part) for part in match.groups() if part is not None)
+
+
+def _parse_api_version(version_str: str) -> _ParsedApiVersion:
+    match = _API_VERSION_PART_PATTERN.fullmatch(version_str)
+    if not match:
+        raise ValueError("Version must be major or major.minor or major.minor.patch.")
+    release = tuple(
+        int(part)
+        for part in (
+            match.group("major"),
+            match.group("minor"),
+            match.group("patch"),
+        )
+        if part is not None
+    )
+    prerelease = match.group("pre")
+    prerelease_number = int(match.group("pre_n") or 0)
+    return _ParsedApiVersion(release, prerelease, prerelease_number)
+
+
+def _api_version_sort_key(
+    version: _ParsedApiVersion,
+) -> tuple[tuple[int, ...], int, int]:
+    return (
+        version.release,
+        _PRERELEASE_ORDER[version.prerelease],
+        version.prerelease_number,
+    )
+
+
+def _api_version_upper_bound(version: _ParsedApiVersion) -> tuple[int, ...]:
+    release = version.release
+    if len(release) <= 2:
+        return (release[0] + 1,)
+    return (release[0], release[1] + 1)
+
+
+def _is_compatible_api_version_candidate(
+    candidate: _ParsedApiVersion,
+    version_range: _ApiVersionRange,
+    upper_bound: tuple[int, ...],
+) -> bool:
+    floor = version_range.floor
+    if _api_version_sort_key(candidate) < _api_version_sort_key(floor):
+        return False
+    outside_compatible_range = candidate.release[: len(upper_bound)] >= upper_bound
+    if outside_compatible_range and not version_range.allow_future_stable:
+        return False
+    if outside_compatible_range and candidate.prerelease is not None:
+        return False
+    if floor.prerelease == "dev" and candidate.prerelease == "dev":
+        return candidate == floor
+    return True
+
+
+def _ensure_compatible_api_version_base_image(base_image: str) -> None:
+    if ":" in base_image:
+        raise click.UsageError(
+            "Compatible api_version ranges cannot be used with a tagged base_image."
+        )
+
+
+def _get_pypi_versions(package_name: str) -> list[str]:
+    try:
+        response = httpx.get(
+            f"https://pypi.org/pypi/{package_name}/json",
+            timeout=10,
+        )
+        response.raise_for_status()
+    except httpx.HTTPError as exc:
+        raise click.UsageError(
+            f"Failed to fetch PyPI versions for {package_name}: {exc}"
+        ) from None
+    payload = response.json()
+    releases = payload.get("releases", {})
+    if not isinstance(releases, dict):
+        raise click.UsageError(
+            f"Failed to fetch PyPI versions for {package_name}: invalid response."
+        )
+    return [version for version in releases if isinstance(version, str)]
+
+
+def _resolve_compatible_api_version(
+    api_version: str,
+    base_image: str,
+    version_distro_tag: str,
+) -> str:
+    match = _API_VERSION_RANGE_PATTERN.fullmatch(api_version)
+    if not match:
+        return api_version
+
+    floor_str = match.group("version").strip()
+    try:
+        floor = _parse_api_version(floor_str)
+    except ValueError:
+        raise click.UsageError(
+            f"Invalid compatible api_version range: {api_version}.\n\n"
+            "Use a compatible version range, e.g.:\n"
+            '  "api_version": "~=0.11.0.dev5"\n'
+            "or a stable-floating range, e.g.:\n"
+            '  "api_version": ">~=0.11.0.dev5"'
+        ) from None
+
+    version_range = _ApiVersionRange(
+        floor=floor,
+        allow_future_stable=match.group("operator") == ">~=",
+    )
+    _ensure_compatible_api_version_base_image(base_image)
+    pypi_versions = _get_pypi_versions("langgraph-api")
+
+    candidates: list[tuple[_ParsedApiVersion, str]] = []
+    upper_bound = _api_version_upper_bound(floor)
+    for candidate_str in pypi_versions:
+        try:
+            candidate = _parse_api_version(candidate_str)
+        except ValueError:
+            continue
+        if _is_compatible_api_version_candidate(candidate, version_range, upper_bound):
+            candidates.append((candidate, candidate_str))
+
+    if not candidates:
+        raise click.UsageError(
+            f"No PyPI releases match compatible api_version range {api_version!r} "
+            f"for {base_image} with {version_distro_tag!r}."
+        )
+
+    return max(candidates, key=lambda item: _api_version_sort_key(item[0]))[1]
+
+
 def _is_node_graph(spec: str | dict) -> bool:
     """Check if a graph is a Node.js graph based on the file extension."""
     if isinstance(spec, dict):
@@ -176,12 +347,17 @@ def validate_config(config: Config) -> Config:
             )
     if api_version:
         try:
-            parts = tuple(map(int, api_version.split("-")[0].split(".")))
+            compatible_match = _API_VERSION_RANGE_PATTERN.fullmatch(api_version)
+            parts = _parse_api_version_parts(
+                compatible_match.group("version").strip()
+                if compatible_match
+                else api_version
+            )
             if len(parts) > 3:
                 raise ValueError(
                     "Version must be major or major.minor or major.minor.patch."
                 )
-        except TypeError:
+        except (TypeError, ValueError):
             raise click.UsageError(
                 f"Invalid version format: {api_version}.\n\n"
                 "Pin to a minor version, e.g.:\n"
@@ -1412,6 +1588,9 @@ def docker_tag(
 
     # Prepend API version if provided
     if api_version:
+        api_version = _resolve_compatible_api_version(
+            api_version, base_image, f"{language}{version_distro_tag}"
+        )
         full_tag = f"{api_version}-{language}{version_distro_tag}"
     elif "/langgraph-server" in base_image and version_distro_tag not in base_image:
         return f"{base_image}-{language}{version_distro_tag}"

libs/cli/langgraph_cli/dependency_tracking.py

@@ -0,0 +1,141 @@
+"""Detection of tracked Python packages in a local LangGraph project.
+
+Mirrors host-backend's `host.models.dependency_tracking` so that CLI-based
+deploys report the same `tracked_packages` revision metadata that
+GitHub-based deploys do. The host backend strictly validates each entry
+against `<package-name>:<version>` with package-name in `TRACKED_PACKAGES`,
+so the detection rules here must match exactly.
+"""
+
+from __future__ import annotations
+
+import pathlib
+import re
+
+# Single source of truth for which packages the host backend cares about.
+# Keep in sync with host-backend/host/models/tracked_packages.py.
+TRACKED_PACKAGES: tuple[str, ...] = ("google-adk",)
+
+_MAX_READ_BYTES = 5 * 1024 * 1024
+
+_PACKAGES_ALT = "|".join(re.escape(p) for p in TRACKED_PACKAGES)
+
+_DEPS_RE = re.compile(
+    rf"(?<![a-zA-Z0-9_-])({_PACKAGES_ALT})"
+    r"(?:\[[^\]]*\])?"
+    r"\s*((?:(?:==|>=|<=|~=|!=|>|<)\s*[\w.*]+\s*,?\s*)+)"
+)
+
+_UV_LOCK_RE = re.compile(
+    rf'name\s*=\s*"({_PACKAGES_ALT})"\s*\n\s*version\s*=\s*"([^"]+)"'
+)
+
+_BARE_RE = re.compile(rf'(?<![a-zA-Z0-9_-])({_PACKAGES_ALT})(?:\[[^\]]*\])?\s*[,"\'\n]')
+
+_EXTRAS_BRACKET_RE = re.compile(r"\[([a-zA-Z0-9_.\- ,\t]+)\]")
+
+
+def _appears_in_extras(content: str, pkg: str) -> bool:
+    for m in _EXTRAS_BRACKET_RE.finditer(content):
+        for token in m.group(1).split(","):
+            if token.strip() == pkg:
+                return True
+    return False
+
+
+def _read_text(path: pathlib.Path) -> str | None:
+    try:
+        if not path.is_file():
+            return None
+        with open(path, "rb") as f:
+            data = f.read(_MAX_READ_BYTES + 1)
+    except OSError:
+        return None
+    if len(data) > _MAX_READ_BYTES:
+        data = data[:_MAX_READ_BYTES]
+    return data.decode("utf-8", errors="replace")
+
+
+def _find_version_for(
+    pkg: str,
+    lock_content: str | None,
+    pyproject_content: str | None,
+    requirements_content: str | None,
+) -> str | None:
+    if lock_content is not None:
+        for m in _UV_LOCK_RE.finditer(lock_content):
+            if m.group(1) == pkg:
+                return m.group(2)
+    for content in (pyproject_content, requirements_content):
+        if content is None:
+            continue
+        for m in _DEPS_RE.finditer(content):
+            if m.group(1) == pkg:
+                return m.group(2).strip().rstrip(",")
+        for m in _BARE_RE.finditer(content):
+            if m.group(1) == pkg:
+                return "unknown"
+        if _appears_in_extras(content, pkg):
+            return "unknown"
+    return None
+
+
+def _resolved_dep_base(
+    project_root: pathlib.Path, dep_path: str
+) -> pathlib.Path | None:
+    """Return the resolved dep directory if it stays inside the project root."""
+    try:
+        candidate = (project_root / dep_path).resolve()
+    except (OSError, RuntimeError):
+        return None
+    try:
+        candidate.relative_to(project_root)
+    except ValueError:
+        return None
+    return candidate
+
+
+def find_tracked_packages(
+    config: pathlib.Path,
+    config_json: dict,
+) -> list[str]:
+    """Return every tracked package found in deps as `<name>:<version>` entries.
+
+    `config` is the absolute path to `langgraph.json`; dep paths in
+    `config_json["dependencies"]` are resolved relative to its parent.
+    Detection precedence per package: uv.lock resolved > pyproject.toml /
+    requirements.txt specifier > bare reference > extras bracket (last
+    two recorded as "unknown"). Output is ordered by `TRACKED_PACKAGES`.
+    """
+    try:
+        project_root = config.parent.resolve()
+    except (OSError, RuntimeError):
+        return []
+
+    dep_paths = config_json.get("dependencies") or ["."]
+
+    found: dict[str, str] = {}
+
+    for dep_path in dep_paths:
+        if all(pkg in found for pkg in TRACKED_PACKAGES):
+            break
+        if not isinstance(dep_path, str):
+            continue
+        base = _resolved_dep_base(project_root, dep_path)
+        if base is None or not base.is_dir():
+            continue
+
+        lock_content = _read_text(base / "uv.lock")
+        pyproject_content = _read_text(base / "pyproject.toml")
+        requirements_content = _read_text(base / "requirements.txt")
+
+        for pkg in TRACKED_PACKAGES:
+            if pkg in found:
+                continue
+            version = _find_version_for(
+                pkg, lock_content, pyproject_content, requirements_content
+            )
+            if version is not None:
+                found[pkg] = version
+
+    return [f"{pkg}:{found[pkg]}" for pkg in TRACKED_PACKAGES if pkg in found]

libs/cli/langgraph_cli/deploy.py

@@ -20,6 +20,7 @@ from dotenv import dotenv_values, set_key
 import langgraph_cli.config
 from langgraph_cli.analytics import log_command
 from langgraph_cli.constants import DEFAULT_CONFIG
+from langgraph_cli.dependency_tracking import find_tracked_packages
 from langgraph_cli.docker import build_docker_image, can_build_locally
 from langgraph_cli.exec import Runner, subp_exec
 from langgraph_cli.host_backend import HostBackendClient, HostBackendError
@@ -365,6 +366,42 @@ def normalize_image_tag(value: str) -> str:
     return value
 
 
+def _validate_prebuilt_image(runner, image: str, *, verbose: bool) -> None:
+    """Ensure a prebuilt image exists locally for linux/amd64."""
+    try:
+        stdout, _ = runner.run(
+            subp_exec(
+                "docker",
+                "image",
+                "inspect",
+                "--format",
+                "{{.Os}}/{{.Architecture}}",
+                image,
+                verbose=verbose,
+                collect=True,
+            )
+        )
+    except FileNotFoundError:
+        raise click.ClickException(
+            "Docker is required but not installed.\n"
+            "Install Docker Desktop: https://docs.docker.com/get-docker/"
+        ) from None
+    except click.exceptions.Exit:
+        raise click.ClickException(
+            f"Docker image '{image}' was not found locally. Build or pull the image "
+            "before deploying with --image."
+        ) from None
+
+    image_platform = (stdout or "").strip()
+    if image_platform != "linux/amd64":
+        detected = image_platform or "unknown"
+        raise click.ClickException(
+            f"Docker image '{image}' targets {detected}, but LangSmith Deployment "
+            "requires linux/amd64. Rebuild or pull the image for linux/amd64 before "
+            "deploying with --image."
+        )
+
+
 def _extract_deployment_url(deployment: dict[str, object]) -> str:
     source_config = deployment.get("source_config")
     if isinstance(source_config, dict):
@@ -524,12 +561,18 @@ def _secrets_from_env(
 
 def _resolve_build_mode(
     remote_build_flag: bool | None,
+    *,
+    force_local: bool = False,
 ) -> tuple[bool, str | None]:
     """Determine whether to use a remote build.
 
     Returns (use_remote_build, local_build_error).  Raises UsageError when
-    --no-remote is set but the machine cannot build locally.
+    --no-remote is set but the machine cannot build locally. When
+    `force_local` is set, the function short-circuits and always selects a
+    local build.
     """
+    if force_local:
+        return False, None
     local_build_supported, local_build_error = can_build_locally()
 
     if remote_build_flag is True:
@@ -849,6 +892,41 @@ def _upload_to_gcs(signed_url: str, file_path: str, file_size: int) -> None:
 # ---------------------------------------------------------------------------
 
 
+def _resolve_pushed_image_digest(
+    runner,
+    *,
+    remote_image: str,
+    docker_config_dir: str | None,
+    verbose: bool,
+) -> str:
+    """Return ``{registry}/{repo}@sha256:<hex>`` for a freshly-pushed image.
+
+    Reads ``RepoDigests`` via ``docker image inspect`` — the local daemon
+    records the registry's manifest digest there after a successful push.
+    Falls back to ``remote_image`` with a warning if no matching digest is
+    found, rather than failing the deploy.
+    """
+    # rsplit preserves ``:port`` in the registry host.
+    repo_no_tag = remote_image.rsplit(":", 1)[0]
+    args: list[str] = ["docker"]
+    if docker_config_dir:
+        args += ["--config", docker_config_dir]
+    args += ["image", "inspect", "--format", "{{json .RepoDigests}}", remote_image]
+    stdout, _ = runner.run(subp_exec(*args, collect=True, verbose=verbose))
+    try:
+        digests = json_mod.loads(stdout or "[]") or []
+    except json_mod.JSONDecodeError:
+        digests = []
+    for d in digests:
+        if isinstance(d, str) and d.startswith(f"{repo_no_tag}@sha256:"):
+            return d
+    _get_emitter().warn(
+        f"Could not resolve image digest for {remote_image}; "
+        "falling back to the tag-based reference. Re-run with --verbose for details."
+    )
+    return remote_image
+
+
 def _run_local_build(
     *,
     client: HostBackendClient,
@@ -861,63 +939,71 @@ def _run_local_build(
     api_version: str | None,
     base_image: str | None,
     image_name: str | None,
+    prebuilt_image: str | None,
     name: str | None,
     tag: str,
     install_command: str | None,
     build_command: str | None,
     docker_build_args: Sequence[str],
     secrets: list[dict[str, str]],
+    tracked_packages: list[str] | None,
 ) -> BuildResult:
     """Build locally with Docker, push to registry, update deployment."""
     # Use buildx to cross-compile for amd64 when running on a non-x86_64 host
     # (e.g. Apple Silicon). On amd64 hosts, plain docker build is sufficient.
     needs_buildx = platform.machine() != "x86_64"
     local_tag = f"langgraph-deploy-tmp:{int(time.time())}"
+    image_to_push = prebuilt_image or local_tag
 
     with Runner() as runner:
-        # -- Step: Build image --
-        _log_deploy_step(step, "Building image")
-        if needs_buildx:
-            build_flags: list[str] = [
-                "--platform",
-                "linux/amd64",
-                "--load",
-            ]
-            if not verbose:
-                build_flags.append("--progress=quiet")
-            with Progress(message="Building...", elapsed=not verbose):
-                build_docker_image(
-                    runner,
-                    lambda _msg: None,
-                    config,
-                    config_json,
-                    base_image,
-                    api_version,
-                    pull,
-                    local_tag,
-                    docker_build_args,
-                    install_command,
-                    build_command,
-                    docker_command=("docker", "buildx", "build"),
-                    extra_flags=build_flags,
-                    verbose=verbose,
-                )
+        if prebuilt_image:
+            _log_deploy_step(step, f"Validating image {prebuilt_image}")
+            _validate_prebuilt_image(runner, prebuilt_image, verbose=verbose)
+            click.secho("   Image is available for linux/amd64", fg="green")
         else:
-            with Progress(message="Building...", elapsed=not verbose):
-                build_docker_image(
-                    runner,
-                    lambda _msg: None,
-                    config,
-                    config_json,
-                    base_image,
-                    api_version,
-                    pull,
-                    local_tag,
-                    docker_build_args,
-                    install_command,
-                    build_command,
-                    verbose=verbose,
-                )
+            # -- Step: Build image --
+            _log_deploy_step(step, "Building image")
+            if needs_buildx:
+                build_flags: list[str] = [
+                    "--platform",
+                    "linux/amd64",
+                    "--load",
+                ]
+                if not verbose:
+                    build_flags.append("--progress=quiet")
+                with Progress(message="Building...", elapsed=not verbose):
+                    build_docker_image(
+                        runner,
+                        lambda _msg: None,
+                        config,
+                        config_json,
+                        base_image,
+                        api_version,
+                        pull,
+                        local_tag,
+                        docker_build_args,
+                        install_command,
+                        build_command,
+                        docker_command=("docker", "buildx", "build"),
+                        extra_flags=build_flags,
+                        verbose=verbose,
+                    )
+            else:
+                with Progress(message="Building...", elapsed=not verbose):
+                    build_docker_image(
+                        runner,
+                        lambda _msg: None,
+                        config,
+                        config_json,
+                        base_image,
+                        api_version,
+                        pull,
+                        local_tag,
+                        docker_build_args,
+                        install_command,
+                        build_command,
+                        verbose=verbose,
+                    )
         step += 1
 
         # -- Step: Get push token and authenticate --
@@ -986,7 +1072,7 @@ def _run_local_build(
                 subp_exec(
                     "docker",
                     "tag",
-                    local_tag,
+                    image_to_push,
                     remote_image,
                     verbose=verbose,
                 )
@@ -1015,9 +1101,21 @@ def _run_local_build(
                         raise
         step += 1
 
+        resolved_image = _resolve_pushed_image_digest(
+            runner,
+            remote_image=remote_image,
+            docker_config_dir=None,
+            verbose=verbose,
+        )
+
         # -- Step: Update deployment --
         _log_deploy_step(step, f"Updating deployment {deployment_id}")
-        updated = client.update_deployment(deployment_id, remote_image, secrets=secrets)
+        updated = client.update_deployment(
+            deployment_id,
+            resolved_image,
+            secrets=secrets,
+            tracked_packages=tracked_packages,
+        )
 
     return BuildResult(
         updated=updated if isinstance(updated, dict) else {},
@@ -1039,6 +1137,7 @@ def _run_remote_build(
     install_command: str | None,
     build_command: str | None,
     secrets: list[dict[str, str]],
+    tracked_packages: list[str] | None,
 ) -> BuildResult:
     """Upload source tarball and trigger a remote build."""
     from langgraph_cli.archive import create_archive
@@ -1069,6 +1168,7 @@ def _run_remote_build(
         secrets=secrets,
         install_command=install_command,
         build_command=build_command,
+        tracked_packages=tracked_packages,
     )
 
     log_offset: str | None = None
@@ -1372,6 +1472,13 @@ def _deploy_base_options(
                 show_default=True,
                 help="Tag to use for the pushed deployment image.",
             ),
+            click.option(
+                "--image",
+                help=(
+                    "Use an existing local image reference (e.g. repo:tag) and "
+                    "skip building. The image must target linux/amd64."
+                ),
+            ),
             click.option(
                 "--config",
                 "-c",
@@ -1472,6 +1579,7 @@ def _deploy_cmd(
     deployment_type: str,
     name: str | None,
     image_name: str | None,
+    image: str | None,
     tag: str,
     base_image: str | None,
     install_command: str | None,
@@ -1518,7 +1626,12 @@ def _deploy_cmd(
 
     secrets = _secrets_from_env(_env_without_deployment_name(env_vars))
 
-    use_remote_build, local_build_error = _resolve_build_mode(remote_build_flag)
+    if image and remote_build_flag is True:
+        raise click.UsageError("--image cannot be combined with --remote builds.")
+
+    use_remote_build, local_build_error = _resolve_build_mode(
+        remote_build_flag, force_local=image is not None
+    )
     if use_remote_build and remote_build_flag is None and local_build_error:
         em.note(f"{local_build_error}\nUsing remote build instead.")
         if not json_output:
@@ -1553,6 +1666,15 @@ def _deploy_cmd(
     if not deployment_id:
         raise click.ClickException("Failed to determine deployment ID")
 
+    # Scan local sources for tracked packages so the new revision carries
+    # the same metadata GitHub-backed deploys produce. Failures must never
+    # block a deploy.
+    try:
+        tracked_packages = find_tracked_packages(config, config_json) or None
+    except Exception as exc:
+        em.warn(f"Skipped tracked-package scan: {exc}")
+        tracked_packages = None
+
     # -- 3. Build (divergent path) --
     if use_remote_build:
         build_result = _run_remote_build(
@@ -1565,6 +1687,7 @@ def _deploy_cmd(
             install_command=install_command,
             build_command=build_command,
             secrets=secrets,
+            tracked_packages=tracked_packages,
         )
     else:
         build_result = _run_local_build(
@@ -1578,12 +1701,14 @@ def _deploy_cmd(
             api_version=api_version,
             base_image=base_image,
             image_name=image_name,
+            prebuilt_image=image,
             name=name,
             tag=tag,
             install_command=install_command,
             build_command=build_command,
             docker_build_args=docker_build_args,
             secrets=secrets,
+            tracked_packages=tracked_packages,
         )
 
     # -- 4. Shared wait + result --
@@ -1661,8 +1786,12 @@ def deploy_list(api_key: str | None, host_url: str | None, name_contains: str) -
         client,
         lambda c: c.list_deployments(name_contains=name_contains),
     )
-    resources = response.get("resources", []) if isinstance(response, dict) else []
-    deployments = [item for item in resources if isinstance(item, dict)]
+    resources = response.get("resources") if isinstance(response, dict) else None
+    deployments = (
+        [item for item in resources if isinstance(item, dict)]
+        if isinstance(resources, list)
+        else []
+    )
     if not deployments:
         click.echo("No deployments found.")
         return
@@ -1706,8 +1835,12 @@ def deploy_revisions_list(
         client,
         lambda c: c.list_revisions(deployment_id, limit=limit),
     )
-    resources = response.get("resources", []) if isinstance(response, dict) else []
-    revisions = [item for item in resources if isinstance(item, dict)]
+    resources = response.get("resources") if isinstance(response, dict) else None
+    revisions = (
+        [item for item in resources if isinstance(item, dict)]
+        if isinstance(resources, list)
+        else []
+    )
     if not revisions:
         click.echo(f"No revisions found for deployment {deployment_id}.")
         return

libs/cli/langgraph_cli/host_backend.py

@@ -122,11 +122,14 @@ class HostBackendClient:
         deployment_id: str,
         image_uri: str,
         secrets: list[dict[str, str]] | None = None,
+        tracked_packages: list[str] | None = None,
     ) -> dict[str, Any]:
         payload: dict[str, Any] = {
             "revision_source": "internal_docker",
             "source_revision_config": {"image_uri": image_uri},
         }
+        if tracked_packages:
+            payload["tracked_packages"] = tracked_packages
         if secrets is not None:
             payload["secrets"] = secrets
         return self._request(
@@ -143,6 +146,7 @@ class HostBackendClient:
         secrets: list[dict[str, str]] | None = None,
         install_command: str | None = None,
         build_command: str | None = None,
+        tracked_packages: list[str] | None = None,
     ) -> dict[str, Any]:
         """Trigger a remote build revision with the uploaded tarball."""
         payload: dict[str, Any] = {
@@ -152,6 +156,8 @@ class HostBackendClient:
                 "langgraph_config_path": config_path,
             },
         }
+        if tracked_packages:
+            payload["tracked_packages"] = tracked_packages
 
         source_config: dict[str, Any] = {}
         if install_command is not None:

libs/cli/pyproject.toml

@@ -23,7 +23,7 @@ dependencies = [
 path = "langgraph_cli/__init__.py"
 [project.optional-dependencies]
 inmem = [
-    "langgraph-api>=0.5.35,<0.9.0 ; python_version >= '3.11'",
+    "langgraph-api>=0.5.35,<1.0.0 ; python_version >= '3.11'",
     "langgraph-runtime-inmem>=0.7 ; python_version >= '3.11'",
 ]
 
@@ -47,7 +47,7 @@ test = [
 lint = [
     "ruff",
     "codespell",
-    "mypy",
+    "ty",
 ]
 dev = [
     {include-group = "test"},
@@ -72,7 +72,27 @@ lint.select = [
   "UP", # pyupgrade
   "B",  # flake8-bugbear
   "I",  # isort
+  "PLC0415",  # import-outside-top-level
+  "RUF100",  # unused noqa directive
   "UP", # pyupgrade
 ]
 lint.ignore = ["E501", "B008"]
+# PLC0415 (import-outside-top-level) is enforced in tests only. Library code
+# still has deferred imports that have not been reviewed, so it stays exempt
+# for now.
+lint.per-file-ignores = { "langgraph_cli/**" = ["PLC0415"], "generate_schema.py" = ["PLC0415"] }
 target-version = "py310"
+
+[tool.ty.rules]
+invalid-argument-type = "ignore"
+invalid-assignment = "ignore"
+invalid-key = "ignore"
+invalid-parameter-default = "ignore"
+invalid-return-type = "ignore"
+missing-argument = "ignore"
+no-matching-overload = "ignore"
+not-subscriptable = "ignore"
+unused-type-ignore-comment = "ignore"
+unresolved-attribute = "ignore"
+unresolved-import = "ignore"
+unsupported-operator = "ignore"

libs/cli/python-monorepo-example/pyproject.toml

@@ -19,7 +19,7 @@ members = ["apps/*", "libs/shared"]
 shared = { workspace = true }
 
 [project.optional-dependencies]
-dev = ["mypy>=1.11.1", "ruff>=0.6.1"]
+dev = ["ruff>=0.6.1", "ty"]
 
 [build-system]
 requires = ["setuptools>=73.0.0", "wheel"]
@@ -43,4 +43,4 @@ lint.ignore = [
 ]
 
 [tool.ruff.lint.pydocstyle]
-convention = "google"
+convention = "google"

libs/cli/tests/unit_tests/cli/test_cli.py

@@ -7,6 +7,7 @@ import textwrap
 from contextlib import contextmanager
 from pathlib import Path
 
+import click
 from click.testing import CliRunner
 
 import langgraph_cli.deploy as deploy_module
@@ -319,6 +320,31 @@ def test_top_level_help_truncates_command_descriptions_to_single_line() -> None:
     assert "[Beta] List LangSmith Deployments." in deploy_list_line
 
 
+def test_dev_command_requires_ssl_certfile_and_keyfile_together(tmp_path) -> None:
+    config_path = tmp_path / "langgraph.json"
+    config_path.write_text(
+        json.dumps({"dependencies": [], "graphs": {"agent": "./agent.py:graph"}}),
+        encoding="utf-8",
+    )
+    certfile = tmp_path / "cert.pem"
+    certfile.write_text("cert", encoding="utf-8")
+
+    runner = CliRunner()
+    result = runner.invoke(
+        cli,
+        [
+            "dev",
+            "--config",
+            str(config_path),
+            "--ssl-certfile",
+            str(certfile),
+        ],
+    )
+
+    assert result.exit_code != 0
+    assert "Both --ssl-certfile and --ssl-keyfile must be provided" in result.output
+
+
 def test_deploy_list_command(monkeypatch) -> None:
     runner = CliRunner()
     captured: dict[str, str] = {}
@@ -576,7 +602,8 @@ def test_deploy_delete_command(monkeypatch) -> None:
         "deployment_id": "dep-123",
     }
     assert (
-        "Are you sure you want to delete deployment ID dep-123? (Y/n):" in result.output
+        "Are you sure you want to delete deployment ID dep-123? (Y/n):"
+        in click.unstyle(result.output)
     )
     assert result.output.strip().endswith("Deleted deployment dep-123.")
 

libs/cli/tests/unit_tests/test_archive.py

@@ -11,6 +11,7 @@ from langgraph_cli.archive import (
     _tar_filter,
     create_archive,
 )
+from langgraph_cli.config import LocalDeps
 
 # ---------------------------------------------------------------------------
 # _tar_filter
@@ -71,7 +72,6 @@ class TestBuildIgnoreSpec:
         assert spec.match_file("venv/")
         assert spec.match_file("node_modules/")
         assert spec.match_file(".tox/")
-        assert spec.match_file(".mypy_cache/")
 
     def test_regular_file_not_excluded(self, tmp_path):
         spec = _build_ignore_spec(tmp_path)
@@ -199,7 +199,6 @@ class TestCreateArchive:
 
     @patch("langgraph_cli.archive._assemble_local_deps")
     def test_yields_archive_with_config(self, mock_deps, tmp_path):
-        from langgraph_cli.config import LocalDeps
 
         config_file = self._make_project(tmp_path)
         mock_deps.return_value = LocalDeps(
@@ -219,7 +218,6 @@ class TestCreateArchive:
 
     @patch("langgraph_cli.archive._assemble_local_deps")
     def test_excludes_pycache(self, mock_deps, tmp_path):
-        from langgraph_cli.config import LocalDeps
 
         config_file = self._make_project(tmp_path)
         mock_deps.return_value = LocalDeps(
@@ -233,7 +231,6 @@ class TestCreateArchive:
 
     @patch("langgraph_cli.archive._assemble_local_deps")
     def test_cleans_up_tmp_dir_on_normal_exit(self, mock_deps, tmp_path):
-        from langgraph_cli.config import LocalDeps
 
         config_file = self._make_project(tmp_path)
         mock_deps.return_value = LocalDeps(
@@ -248,7 +245,6 @@ class TestCreateArchive:
 
     @patch("langgraph_cli.archive._assemble_local_deps")
     def test_cleans_up_tmp_dir_on_exception(self, mock_deps, tmp_path):
-        from langgraph_cli.config import LocalDeps
 
         config_file = self._make_project(tmp_path)
         mock_deps.return_value = LocalDeps(
@@ -265,7 +261,6 @@ class TestCreateArchive:
     @patch("langgraph_cli.archive._assemble_local_deps")
     @patch("langgraph_cli.archive._MAX_SIZE", 10)
     def test_raises_on_oversized_archive(self, mock_deps, tmp_path):
-        from langgraph_cli.config import LocalDeps
 
         config_file = self._make_project(tmp_path)
         mock_deps.return_value = LocalDeps(
@@ -279,7 +274,6 @@ class TestCreateArchive:
     @patch("langgraph_cli.archive._assemble_local_deps")
     def test_handles_extra_contexts(self, mock_deps, tmp_path):
         """Monorepo case: project + sibling dependency directory."""
-        from langgraph_cli.config import LocalDeps
 
         project = tmp_path / "myproject"
         project.mkdir()

libs/cli/tests/unit_tests/test_config.py

@@ -2944,6 +2944,180 @@ def test_docker_tag_with_api_version(in_config: bool):
     assert tag == f"langchain/langgraph-server:{version}-py3.11"
 
 
+@pytest.mark.parametrize("in_config", [False, True])
+@pytest.mark.parametrize("version", ["0.9.0rc1", "0.9.0.dev1"])
+def test_docker_tag_with_prerelease_api_version(version: str, in_config: bool):
+    """Test docker_tag with prerelease and dev api_version values."""
+    config = validate_config(
+        {
+            "python_version": "3.11",
+            "dependencies": ["."],
+            "graphs": {"agent": "./agent.py:graph"},
+            "api_version": version if in_config else None,
+        }
+    )
+
+    tag = docker_tag(config, api_version=version if not in_config else None)
+    assert tag == f"langchain/langgraph-api:{version}-py3.11"
+
+
+def test_docker_tag_with_compatible_api_version_promotes_to_latest_patch():
+    config = validate_config(
+        {
+            "python_version": "3.12",
+            "dependencies": ["."],
+            "graphs": {"agent": "./agent.py:graph"},
+            "image_distro": "wolfi",
+            "api_version": "~=0.11.0.dev5",
+        }
+    )
+
+    with patch(
+        "langgraph_cli.config._get_pypi_versions",
+        return_value=[
+            "0.11.0.dev5",
+            "0.11.0.dev6",
+            "0.11.0rc1",
+            "0.11.0",
+            "0.11.1rc1",
+            "0.11.1",
+            "0.12.0rc1",
+        ],
+    ) as get_versions:
+        tag = docker_tag(config)
+
+    get_versions.assert_called_once_with("langgraph-api")
+    assert tag == "langchain/langgraph-api:0.11.1-py3.12-wolfi"
+
+
+def test_docker_tag_with_compatible_api_version_freezes_dev_until_rc():
+    config = validate_config(
+        {
+            "python_version": "3.12",
+            "dependencies": ["."],
+            "graphs": {"agent": "./agent.py:graph"},
+            "api_version": "~=0.11.0.dev5",
+        }
+    )
+
+    with patch(
+        "langgraph_cli.config._get_pypi_versions",
+        return_value=[
+            "0.11.0.dev5",
+            "0.11.0.dev6",
+            "0.11.0.dev7",
+        ],
+    ):
+        tag = docker_tag(config)
+
+    assert tag == "langchain/langgraph-api:0.11.0.dev5-py3.12"
+
+
+def test_docker_tag_with_stable_floating_api_version_promotes_to_future_stable():
+    config = validate_config(
+        {
+            "python_version": "3.12",
+            "dependencies": ["."],
+            "graphs": {"agent": "./agent.py:graph"},
+            "image_distro": "wolfi",
+            "api_version": ">~=0.11.0.dev5",
+        }
+    )
+
+    with patch(
+        "langgraph_cli.config._get_pypi_versions",
+        return_value=[
+            "0.11.0.dev5",
+            "0.11.0.dev6",
+            "0.11.0rc1",
+            "0.11.0",
+            "0.11.1",
+            "0.12.0rc1",
+            "0.12.0",
+            "0.13.0.dev1",
+            "0.13.0",
+        ],
+    ) as get_versions:
+        tag = docker_tag(config)
+
+    get_versions.assert_called_once_with("langgraph-api")
+    assert tag == "langchain/langgraph-api:0.13.0-py3.12-wolfi"
+
+
+def test_docker_tag_with_stable_floating_api_version_ignores_future_prereleases():
+    config = validate_config(
+        {
+            "python_version": "3.12",
+            "dependencies": ["."],
+            "graphs": {"agent": "./agent.py:graph"},
+            "api_version": ">~=0.11.0.dev5",
+        }
+    )
+
+    with patch(
+        "langgraph_cli.config._get_pypi_versions",
+        return_value=[
+            "0.11.0.dev5",
+            "0.11.0",
+            "0.12.0rc1",
+            "0.12.0.dev1",
+        ],
+    ):
+        tag = docker_tag(config)
+
+    assert tag == "langchain/langgraph-api:0.11.0-py3.12"
+
+
+def test_validate_config_rejects_unrecognized_api_version_range_operator():
+    with pytest.raises(click.UsageError, match="Invalid version format"):
+        validate_config(
+            {
+                "python_version": "3.12",
+                "dependencies": ["."],
+                "graphs": {"agent": "./agent.py:graph"},
+                "api_version": "~>=0.11.0.dev5",
+            }
+        )
+
+
+def test_docker_tag_with_compatible_api_version_supports_node_images():
+    config = validate_config(
+        {
+            "node_version": "20",
+            "graphs": {"agent": "./agent.js:graph"},
+            "image_distro": "wolfi",
+            "api_version": "~=1.2.4",
+        }
+    )
+
+    with patch(
+        "langgraph_cli.config._get_pypi_versions",
+        return_value=[
+            "1.2.4",
+            "1.2.5",
+            "1.3.0",
+        ],
+    ) as get_versions:
+        tag = docker_tag(config)
+
+    get_versions.assert_called_once_with("langgraph-api")
+    assert tag == "langchain/langgraphjs-api:1.2.5-node20-wolfi"
+
+
+def test_docker_tag_with_compatible_api_version_rejects_tagged_base_image():
+    config = validate_config(
+        {
+            "python_version": "3.11",
+            "dependencies": ["."],
+            "graphs": {"agent": "./agent.py:graph"},
+            "api_version": "~=0.11.0.dev5",
+        }
+    )
+
+    with pytest.raises(click.UsageError, match="tagged base_image"):
+        docker_tag(config, base_image="langchain/langgraph-api:0.11.0")
+
+
 def test_config_to_docker_with_api_version():
     """Test config_to_docker function with api_version parameter."""
 

libs/cli/tests/unit_tests/test_dependency_tracking.py

@@ -0,0 +1,134 @@
+import pathlib
+
+import pytest
+
+from langgraph_cli.dependency_tracking import (
+    TRACKED_PACKAGES,
+    find_tracked_packages,
+)
+
+
+def _write_project(
+    tmp_path: pathlib.Path,
+    *,
+    dep_subdir: str = ".",
+    uv_lock: str | None = None,
+    pyproject: str | None = None,
+    requirements: str | None = None,
+    dependencies: list[str] | None = None,
+) -> tuple[pathlib.Path, dict]:
+    project_root = tmp_path
+    dep_dir = (project_root / dep_subdir).resolve()
+    dep_dir.mkdir(parents=True, exist_ok=True)
+    if uv_lock is not None:
+        (dep_dir / "uv.lock").write_text(uv_lock)
+    if pyproject is not None:
+        (dep_dir / "pyproject.toml").write_text(pyproject)
+    if requirements is not None:
+        (dep_dir / "requirements.txt").write_text(requirements)
+    config = project_root / "langgraph.json"
+    config.write_text("{}")
+    config_json = {"dependencies": dependencies or [dep_subdir]}
+    return config, config_json
+
+
+def test_uv_lock_resolved_version_preferred(tmp_path: pathlib.Path) -> None:
+    config, config_json = _write_project(
+        tmp_path,
+        uv_lock='name = "google-adk"\nversion = "1.2.3"\n',
+        pyproject='dependencies = ["google-adk>=0.5"]',
+    )
+    assert find_tracked_packages(config, config_json) == ["google-adk:1.2.3"]
+
+
+def test_pyproject_specifier_used_when_no_lock(tmp_path: pathlib.Path) -> None:
+    config, config_json = _write_project(
+        tmp_path,
+        pyproject='dependencies = ["google-adk>=0.5,<2"]',
+    )
+    assert find_tracked_packages(config, config_json) == ["google-adk:>=0.5,<2"]
+
+
+def test_requirements_txt_specifier(tmp_path: pathlib.Path) -> None:
+    config, config_json = _write_project(
+        tmp_path,
+        requirements="google-adk==1.0.0\n",
+    )
+    assert find_tracked_packages(config, config_json) == ["google-adk:==1.0.0"]
+
+
+def test_bare_reference_records_unknown(tmp_path: pathlib.Path) -> None:
+    config, config_json = _write_project(
+        tmp_path,
+        requirements="google-adk\nother-pkg==1.0\n",
+    )
+    assert find_tracked_packages(config, config_json) == ["google-adk:unknown"]
+
+
+def test_extras_bracket_records_unknown(tmp_path: pathlib.Path) -> None:
+    config, config_json = _write_project(
+        tmp_path,
+        pyproject='dependencies = ["deployments-wrap-sdk[google-adk]>=0.0.1"]',
+    )
+    assert find_tracked_packages(config, config_json) == ["google-adk:unknown"]
+
+
+def test_no_match_returns_empty(tmp_path: pathlib.Path) -> None:
+    config, config_json = _write_project(
+        tmp_path,
+        pyproject='dependencies = ["langgraph>=0.2"]',
+    )
+    assert find_tracked_packages(config, config_json) == []
+
+
+def test_traversal_dep_path_is_skipped(tmp_path: pathlib.Path) -> None:
+    outside = tmp_path.parent / "outside-project"
+    outside.mkdir(exist_ok=True)
+    (outside / "uv.lock").write_text('name = "google-adk"\nversion = "9.9.9"\n')
+    project_root = tmp_path / "project"
+    project_root.mkdir()
+    config = project_root / "langgraph.json"
+    config.write_text("{}")
+    config_json = {"dependencies": ["../outside-project"]}
+    assert find_tracked_packages(config, config_json) == []
+
+
+def test_dep_paths_scanned_in_order(tmp_path: pathlib.Path) -> None:
+    project_root = tmp_path
+    (project_root / "first").mkdir()
+    (project_root / "second").mkdir()
+    (project_root / "second" / "uv.lock").write_text(
+        'name = "google-adk"\nversion = "2.0.0"\n'
+    )
+    config = project_root / "langgraph.json"
+    config.write_text("{}")
+    config_json = {"dependencies": ["first", "second"]}
+    assert find_tracked_packages(config, config_json) == ["google-adk:2.0.0"]
+
+
+def test_non_string_dep_entry_ignored(tmp_path: pathlib.Path) -> None:
+    project_root = tmp_path
+    config = project_root / "langgraph.json"
+    config.write_text("{}")
+    config_json = {"dependencies": [123, None]}
+    assert find_tracked_packages(config, config_json) == []
+
+
+def test_oversized_file_is_truncated_not_raised(tmp_path: pathlib.Path) -> None:
+    project_root = tmp_path
+    config = project_root / "langgraph.json"
+    config.write_text("{}")
+    # 6 MB of irrelevant content followed by the tracked-package marker —
+    # the read cap drops the marker, so nothing should be found.
+    padded = ("x" * (6 * 1024 * 1024)) + '\nname = "google-adk"\nversion = "1.0.0"\n'
+    (project_root / "uv.lock").write_text(padded)
+    assert find_tracked_packages(config, {"dependencies": ["."]}) == []
+
+
+@pytest.mark.parametrize("pkg", TRACKED_PACKAGES)
+def test_every_tracked_package_is_detectable(tmp_path: pathlib.Path, pkg: str) -> None:
+    config, config_json = _write_project(
+        tmp_path,
+        uv_lock=f'name = "{pkg}"\nversion = "1.0.0"\n',
+    )
+    assert find_tracked_packages(config, config_json) == [f"{pkg}:1.0.0"]

libs/cli/tests/unit_tests/test_deploy_helpers.py

@@ -1,13 +1,17 @@
+import asyncio
 import base64
 import io
 import json
 import os
 import sys
+from unittest.mock import MagicMock
 
 import click
+import click.exceptions
 import httpx
 import pytest
 
+import langgraph_cli.deploy as deploy_mod
 from langgraph_cli.deploy import (
     _call_host_backend_with_optional_tenant,
     _create_host_backend_client,
@@ -16,7 +20,9 @@ from langgraph_cli.deploy import (
     _env_without_deployment_name,
     _parse_env_from_config,
     _resolve_env_path,
+    _resolve_pushed_image_digest,
     _smith_dashboard_base_url,
+    _validate_prebuilt_image,
     normalize_image_tag,
     normalize_name,
 )
@@ -93,6 +99,65 @@ class TestNormalizeImageTag:
             normalize_image_tag("has space")
 
 
+class _FakeRunner:
+    def run(self, coro):
+        return asyncio.run(coro)
+
+
+class TestValidatePrebuiltImage:
+    def test_accepts_linux_amd64(self, monkeypatch):
+        calls = []
+
+        async def fake_subp_exec(*args, **kwargs):
+            calls.append((args, kwargs))
+            return "linux/amd64\n", None
+
+        monkeypatch.setattr(deploy_mod, "subp_exec", fake_subp_exec)
+
+        _validate_prebuilt_image(_FakeRunner(), "repo/app:tag", verbose=False)
+
+        assert calls == [
+            (
+                (
+                    "docker",
+                    "image",
+                    "inspect",
+                    "--format",
+                    "{{.Os}}/{{.Architecture}}",
+                    "repo/app:tag",
+                ),
+                {"verbose": False, "collect": True},
+            )
+        ]
+
+    def test_missing_docker_binary_raises_actionable_error(self, monkeypatch):
+        async def fake_subp_exec(*args, **kwargs):
+            raise FileNotFoundError("docker")
+
+        monkeypatch.setattr(deploy_mod, "subp_exec", fake_subp_exec)
+
+        with pytest.raises(click.ClickException, match="Docker is required"):
+            _validate_prebuilt_image(_FakeRunner(), "repo/app:tag", verbose=False)
+
+    def test_missing_image_raises_actionable_error(self, monkeypatch):
+        async def fake_subp_exec(*args, **kwargs):
+            raise click.exceptions.Exit(1)
+
+        monkeypatch.setattr(deploy_mod, "subp_exec", fake_subp_exec)
+
+        with pytest.raises(click.ClickException, match="not found locally"):
+            _validate_prebuilt_image(_FakeRunner(), "missing:tag", verbose=False)
+
+    def test_rejects_non_amd64_platform(self, monkeypatch):
+        async def fake_subp_exec(*args, **kwargs):
+            return "linux/arm64\n", None
+
+        monkeypatch.setattr(deploy_mod, "subp_exec", fake_subp_exec)
+
+        with pytest.raises(click.ClickException, match="requires linux/amd64"):
+            _validate_prebuilt_image(_FakeRunner(), "repo/app:arm", verbose=False)
+
+
 class TestParseEnvFromConfig:
     def test_env_dict(self, tmp_path):
         config_path = tmp_path / "langgraph.json"
@@ -282,7 +347,6 @@ class TestCallHostBackendWithOptionalTenant:
 
     def test_workspace_prompt_blocked_by_no_input(self, monkeypatch):
         """With _no_input=True, 403 requiring workspace should raise ClickException."""
-        import langgraph_cli.deploy as deploy_mod
 
         monkeypatch.setattr(deploy_mod, "_no_input", True)
 
@@ -450,7 +514,6 @@ class TestEmitterTextMode:
 
 class TestCreateHostBackendClientNoInput:
     def test_raises_when_no_api_key_and_no_input(self, monkeypatch, tmp_path):
-        import langgraph_cli.deploy as deploy_mod
 
         monkeypatch.setattr(deploy_mod, "_no_input", True)
         monkeypatch.delenv("LANGSMITH_API_KEY", raising=False)
@@ -465,7 +528,6 @@ class TestCreateHostBackendClientNoInput:
             )
 
     def test_succeeds_with_api_key_in_env(self, monkeypatch, tmp_path):
-        import langgraph_cli.deploy as deploy_mod
 
         monkeypatch.setattr(deploy_mod, "_no_input", True)
         monkeypatch.setenv("LANGSMITH_API_KEY", "lsv2_test")
@@ -532,3 +594,156 @@ class TestSmithDashboardBaseUrl:
             _smith_dashboard_base_url("https://custom.example.com")
             == "https://smith.langchain.com"
         )
+
+
+class TestResolvePushedImageDigest:
+    """Tests for ``_resolve_pushed_image_digest`` — runner is mocked to
+    return the ``(stdout, stderr)`` tuple that ``subp_exec(collect=True)``
+    would produce.
+    """
+
+    @staticmethod
+    def _runner(stdout: str | None) -> MagicMock:
+        # Close the unawaited subp_exec coroutine to silence gc warnings.
+        runner = MagicMock()
+
+        def _run(coro, *args, **kwargs):
+            if hasattr(coro, "close"):
+                coro.close()
+            return (stdout, "")
+
+        runner.run.side_effect = _run
+        return runner
+
+    def test_happy_path_returns_digest(self):
+        runner = self._runner('["us-central1-docker.pkg.dev/proj/repo@sha256:abc123"]')
+        out = _resolve_pushed_image_digest(
+            runner,
+            remote_image="us-central1-docker.pkg.dev/proj/repo:latest",
+            docker_config_dir=None,
+            verbose=False,
+        )
+        assert out == "us-central1-docker.pkg.dev/proj/repo@sha256:abc123"
+
+    def test_filters_to_matching_repo(self):
+        # Same image ID can hold digests for multiple repos — pick the one
+        # matching the just-pushed repo.
+        runner = self._runner(
+            json.dumps(
+                [
+                    "other-registry.example.com/some/repo@sha256:000000",
+                    "us-central1-docker.pkg.dev/proj/repo@sha256:abc123",
+                ]
+            )
+        )
+        out = _resolve_pushed_image_digest(
+            runner,
+            remote_image="us-central1-docker.pkg.dev/proj/repo:v1.2.3",
+            docker_config_dir=None,
+            verbose=False,
+        )
+        assert out == "us-central1-docker.pkg.dev/proj/repo@sha256:abc123"
+
+    def test_empty_repodigests_falls_back_with_warning(self, mocker):
+        emitter = mocker.MagicMock()
+        mocker.patch("langgraph_cli.deploy._get_emitter", return_value=emitter)
+        runner = self._runner("[]")
+        remote = "us-central1-docker.pkg.dev/proj/repo:latest"
+        out = _resolve_pushed_image_digest(
+            runner,
+            remote_image=remote,
+            docker_config_dir=None,
+            verbose=False,
+        )
+        assert out == remote
+        assert emitter.warn.called
+        assert remote in emitter.warn.call_args.args[0]
+
+    def test_null_repodigests_falls_back_with_warning(self, mocker):
+        # ``docker inspect --format '{{json .RepoDigests}}'`` emits ``null``
+        # when the field is absent.
+        emitter = mocker.MagicMock()
+        mocker.patch("langgraph_cli.deploy._get_emitter", return_value=emitter)
+        runner = self._runner("null")
+        remote = "us-central1-docker.pkg.dev/proj/repo:latest"
+        out = _resolve_pushed_image_digest(
+            runner,
+            remote_image=remote,
+            docker_config_dir=None,
+            verbose=False,
+        )
+        assert out == remote
+        assert emitter.warn.called
+
+    def test_no_matching_repo_falls_back_with_warning(self, mocker):
+        # No matching digest for the pushed repo — warn and fall back to the
+        # tag-based ref rather than failing the deploy.
+        emitter = mocker.MagicMock()
+        mocker.patch("langgraph_cli.deploy._get_emitter", return_value=emitter)
+        runner = self._runner('["other-registry.example.com/some/repo@sha256:000000"]')
+        remote = "us-central1-docker.pkg.dev/proj/repo:latest"
+        out = _resolve_pushed_image_digest(
+            runner,
+            remote_image=remote,
+            docker_config_dir=None,
+            verbose=False,
+        )
+        assert out == remote
+        assert emitter.warn.called
+
+    def test_registry_with_port_in_host(self):
+        # Only the rightmost ``:`` (the ``:latest`` tag) should be stripped.
+        runner = self._runner('["localhost:5000/repo@sha256:deadbeef"]')
+        out = _resolve_pushed_image_digest(
+            runner,
+            remote_image="localhost:5000/repo:latest",
+            docker_config_dir=None,
+            verbose=False,
+        )
+        assert out == "localhost:5000/repo@sha256:deadbeef"
+
+    @staticmethod
+    def _capturing_runner(stdout: str) -> tuple[MagicMock, dict]:
+        """Like ``_runner`` but exposes the coroutine for arg introspection.
+        Caller must close ``captured["coro"]``.
+        """
+        runner = MagicMock()
+        captured: dict = {}
+
+        def _run(coro, *args, **kwargs):
+            captured["coro"] = coro
+            return (stdout, "")
+
+        runner.run.side_effect = _run
+        return runner, captured
+
+    def test_passes_docker_config_dir(self):
+        runner, captured = self._capturing_runner(
+            '["us-central1-docker.pkg.dev/proj/repo@sha256:abc"]'
+        )
+        _resolve_pushed_image_digest(
+            runner,
+            remote_image="us-central1-docker.pkg.dev/proj/repo:latest",
+            docker_config_dir="/tmp/some-cfg",
+            verbose=False,
+        )
+        frame_locals = captured["coro"].cr_frame.f_locals
+        assert frame_locals["cmd"] == "docker"
+        assert "--config" in frame_locals["args"]
+        cfg_idx = frame_locals["args"].index("--config")
+        assert frame_locals["args"][cfg_idx + 1] == "/tmp/some-cfg"
+        captured["coro"].close()
+
+    def test_omits_docker_config_dir_when_none(self):
+        runner, captured = self._capturing_runner(
+            '["us-central1-docker.pkg.dev/proj/repo@sha256:abc"]'
+        )
+        _resolve_pushed_image_digest(
+            runner,
+            remote_image="us-central1-docker.pkg.dev/proj/repo:latest",
+            docker_config_dir=None,
+            verbose=False,
+        )
+        frame_locals = captured["coro"].cr_frame.f_locals
+        assert "--config" not in frame_locals["args"]
+        captured["coro"].close()

libs/cli/tests/unit_tests/test_host_backend.py

@@ -1,3 +1,5 @@
+import json
+
 import httpx
 import pytest
 
@@ -176,6 +178,69 @@ def test_update_deployment_no_secrets(client):
     assert result == {"ok": True}
 
 
+def _capturing_client(captured: dict) -> HostBackendClient:
+    def handler(req: httpx.Request) -> httpx.Response:
+        captured["body"] = req.read()
+        return httpx.Response(200, json={"ok": True})
+
+    c = HostBackendClient("https://api.example.com", "key")
+    c._client = httpx.Client(
+        base_url="https://api.example.com",
+        transport=httpx.MockTransport(handler),
+        headers={"X-Api-Key": "key", "Accept": "application/json"},
+        timeout=30,
+    )
+    return c
+
+
+def test_update_deployment_forwards_tracked_packages():
+    captured: dict = {}
+    c = _capturing_client(captured)
+    c.update_deployment(
+        "dep-123",
+        "image:latest",
+        tracked_packages=["google-adk:1.0.0"],
+    )
+    body = json.loads(captured["body"])
+    assert body["tracked_packages"] == ["google-adk:1.0.0"]
+    assert "tracked_packages" not in body["source_revision_config"]
+
+
+def test_update_deployment_omits_tracked_packages_when_absent():
+    captured: dict = {}
+    c = _capturing_client(captured)
+    c.update_deployment("dep-123", "image:latest")
+    body = json.loads(captured["body"])
+    assert "tracked_packages" not in body
+
+
+def test_update_deployment_internal_source_forwards_tracked_packages():
+    captured: dict = {}
+    c = _capturing_client(captured)
+    c.update_deployment_internal_source(
+        "dep-123",
+        source_tarball_path="path/to/tarball",
+        config_path="langgraph.json",
+        tracked_packages=["google-adk:>=0.5"],
+    )
+    body = json.loads(captured["body"])
+    assert body["tracked_packages"] == ["google-adk:>=0.5"]
+    assert body["source_revision_config"]["source_tarball_path"] == "path/to/tarball"
+    assert "tracked_packages" not in body["source_revision_config"]
+
+
+def test_update_deployment_internal_source_omits_tracked_packages_when_absent():
+    captured: dict = {}
+    c = _capturing_client(captured)
+    c.update_deployment_internal_source(
+        "dep-123",
+        source_tarball_path="path/to/tarball",
+        config_path="langgraph.json",
+    )
+    body = json.loads(captured["body"])
+    assert "tracked_packages" not in body
+
+
 def test_list_revisions(client):
     result = client.list_revisions("dep-123", limit=5)
     assert result == {"ok": True}

libs/cli/uv-examples/monorepo/apps/agent/pyproject.toml

@@ -7,6 +7,7 @@ dependencies = [
     "langgraph>=0.6.0,<2",
     "langchain-core>=0.2.14",
     "shared",
+    "langgraph-checkpoint-postgres>=3.0.0"
 ]
 
 [build-system]

libs/cli/uv-examples/monorepo/pyproject.toml

@@ -5,7 +5,8 @@ description = "uv workspace monorepo example for LangGraph CLI integration test"
 requires-python = ">=3.11"
 dependencies = [
     "langgraph>=0.6.0,<2",
-    "langchain-core>=0.2.14",
+    "langchain-core>=1.3.3",
+    "langgraph-checkpoint-postgres>=3.0.0"
 ]
 
 [tool.uv.workspace]

libs/cli/uv-examples/monorepo/uv.lock

@@ -16,6 +16,7 @@ source = { editable = "apps/agent" }
 dependencies = [
     { name = "langchain-core" },
     { name = "langgraph" },
+    { name = "langgraph-checkpoint-postgres" },
     { name = "shared" },
 ]
 
@@ -23,6 +24,7 @@ dependencies = [
 requires-dist = [
     { name = "langchain-core", specifier = ">=0.2.14" },
     { name = "langgraph", specifier = ">=0.6.0,<2" },
+    { name = "langgraph-checkpoint-postgres", specifier = ">=3.0.0" },
     { name = "shared", editable = "libs/shared" },
 ]
 
@@ -215,10 +217,11 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "1.2.28"
+version = "1.3.3"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "jsonpatch" },
+    { name = "langchain-protocol" },
     { name = "langsmith" },
     { name = "packaging" },
     { name = "pydantic" },
@@ -227,9 +230,21 @@ dependencies = [
     { name = "typing-extensions" },
     { name = "uuid-utils" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/f8/a4/317a1a3ac1df33a64adb3670bf88bbe3b3d5baa274db6863a979db472897/langchain_core-1.2.28.tar.gz", hash = "sha256:271a3d8bd618f795fdeba112b0753980457fc90537c46a0c11998516a74dc2cb", size = 846119, upload-time = "2026-04-08T18:19:34.867Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/d3/ae/8b74458fc3850ec3d150eb9f45e857db129dafa801fb5cf173dfc9f8bbf3/langchain_core-1.3.3.tar.gz", hash = "sha256:fa510a5db8efdc0c6ff41c0939fb5c00a0183c11f6b84233e892e3227ff69182", size = 915041, upload-time = "2026-05-05T19:02:36.612Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/a8/92/32f785f077c7e898da97064f113c73fbd9ad55d1e2169cf3a391b183dedb/langchain_core-1.2.28-py3-none-any.whl", hash = "sha256:80764232581eaf8057bcefa71dbf8adc1f6a28d257ebd8b95ba9b8b452e8c6ac", size = 508727, upload-time = "2026-04-08T18:19:32.823Z" },
+    { url = "https://files.pythonhosted.org/packages/1f/01/4771b7ab2af1d1aba5b710bd8f13d9225c609425214b357590a17b01be77/langchain_core-1.3.3-py3-none-any.whl", hash = "sha256:18aae8506f37da7f74398492279a7d6efcee4f8e23c4c41c7af080eeb7ef7bd1", size = 543857, upload-time = "2026-05-05T19:02:34.52Z" },
+]
+
+[[package]]
+name = "langchain-protocol"
+version = "0.0.17"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "typing-extensions" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/44/b3/4e2429876c7a35585618caa2b9f9089f7162a6b50562b614ad82ac11c17e/langchain_protocol-0.0.17.tar.gz", hash = "sha256:e7cbe58c205df4b4fd87dc6d5bb23f10e13b236d0e2e1b0b9d05bc2b648f3eea", size = 6026, upload-time = "2026-06-12T18:39:51.923Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/13/0a/a1bfe72c6ec856e99773bbd96c8086421e554b3693d0142b9ea009c6ac92/langchain_protocol-0.0.17-py3-none-any.whl", hash = "sha256:982a08fe152586ed10d4ff3d538c2e0b5766e5f307cdea325e10be3f2c17cae6", size = 7096, upload-time = "2026-06-12T18:39:50.973Z" },
 ]
 
 [[package]]
@@ -262,6 +277,21 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/65/4c/09a4a0c42f5d2fc38d6c4d67884788eff7fd2cfdf367fdf7033de908b4c0/langgraph_checkpoint-4.0.1-py3-none-any.whl", hash = "sha256:e3adcd7a0e0166f3b48b8cf508ce0ea366e7420b5a73aa81289888727769b034", size = 50453, upload-time = "2026-02-27T21:06:14.293Z" },
 ]
 
+[[package]]
+name = "langgraph-checkpoint-postgres"
+version = "3.0.5"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "langgraph-checkpoint" },
+    { name = "orjson" },
+    { name = "psycopg" },
+    { name = "psycopg-pool" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/95/7a/8f439966643d32111248a225e6cb33a182d07c90de780c4dbfc1e0377832/langgraph_checkpoint_postgres-3.0.5.tar.gz", hash = "sha256:a8fd7278a63f4f849b5cbc7884a15ca8f41e7d5f7467d0a66b31e8c24492f7eb", size = 127856, upload-time = "2026-03-18T21:25:29.785Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/e8/87/b0f98b33a67204bca9d5619bcd9574222f6b025cf3c125eedcec9a50ecbc/langgraph_checkpoint_postgres-3.0.5-py3-none-any.whl", hash = "sha256:86d7040a88fd70087eaafb72251d796696a0a2d856168f5c11ef620771411552", size = 42907, upload-time = "2026-03-18T21:25:28.75Z" },
+]
+
 [[package]]
 name = "langgraph-prebuilt"
 version = "1.0.9"
@@ -290,7 +320,7 @@ wheels = [
 
 [[package]]
 name = "langsmith"
-version = "0.7.31"
+version = "0.8.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "httpx" },
@@ -303,9 +333,9 @@ dependencies = [
     { name = "xxhash" },
     { name = "zstandard" },
 ]
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 [[package]]
@@ -707,12 +771,14 @@ source = { virtual = "." }
 dependencies = [
     { name = "langchain-core" },
     { name = "langgraph" },
+    { name = "langgraph-checkpoint-postgres" },
 ]
 
 [package.metadata]
 requires-dist = [
-    { name = "langchain-core", specifier = ">=0.2.14" },
+    { name = "langchain-core", specifier = ">=1.3.3" },
     { name = "langgraph", specifier = ">=0.6.0,<2" },
+    { name = "langgraph-checkpoint-postgres", specifier = ">=3.0.0" },
 ]
 
 [[package]]

libs/cli/uv-examples/simple/pyproject.toml

@@ -5,7 +5,7 @@ description = "Simple single-package uv example for LangGraph CLI integration te
 requires-python = ">=3.11"
 dependencies = [
     "langgraph>=0.6.0,<2",
-    "langchain-core>=0.2.14",
+    "langchain-core>=1.3.3",
 ]
 
 [build-system]