feat(sdk-py): remove fairness_weight from PrioritySettings (#9441 )

`PrioritySettings` no longer has `fairness_weight`, since a group's weight belongs to the group rather than to each thread. The docstrings now match what the server does with the other two keys. - The server stores `priority` and `fairness_group` on the thread. langgraph-api 0.18.0, the first stable release with the priority callback, ignores a `fairness_weight` and logs a warning, so callbacks written against 0.4.9 to 0.4.11 keep working. A callback annotated `-> PrioritySettings` that still returns the key gets a type-checker error. - `PrioritySettings.priority`'s docstring and examples now say -5 runs first and 5 runs last, matching the server. 0.4.9 to 0.4.11 say the reverse, and their example gives premium users 3, which runs them after everyone at the default 0. - `fairness_group` is currently disabled: it has no effect on run order for now, and its docstring says so. It also gives the limit: at most 256 characters, and an empty string takes the default, like a missing key. - The changelog gets a `0.4.12` section, and the old `Unreleased` heading becomes `0.4.11 and earlier`, since everything under it has shipped. ## Test plan - [x] `test_every_settings_key_is_optional` expects only `priority` and `fairness_group`, and fails with the key put back. - [x] `make test` in `libs/sdk-py`: 639 passed. `make lint` clean.
fix(sdk-py): rejoin a run stream that closes before the run ends (#9554 )
2026-11-03 04:41:21 +01:00 · 2026-11-03 01:03:26 +00:00 · 2026-11-02 19:57:22 +00:00 · 2026-11-01 20:33:29 -08:00 · 2026-11-01 16:50:52 -08:00 · 2026-11-01 16:50:44 -08:00
83 changed files with 4382 additions and 1191 deletions
@@ -33,7 +33,7 @@ jobs:
          working-directory: libs/sdk-py

      - name: Login to Docker Hub
-        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4
+        uses: docker/login-action@81c6f93d4bc991e510b342a00b419b3bb4efc5c6 # v4
        if: ${{ !github.event.pull_request.head.repo.fork }}
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
@@ -33,7 +33,7 @@ jobs:
          cache-suffix: test-${{ inputs.working-directory }}
          working-directory: ${{ inputs.working-directory }}
      - name: Login to Docker Hub
-        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4
+        uses: docker/login-action@81c6f93d4bc991e510b342a00b419b3bb4efc5c6 # v4
        if: ${{ !github.event.pull_request.head.repo.fork }}
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
@@ -31,7 +31,7 @@ jobs:
          cache-suffix: "test-langgraph"
          working-directory: libs/langgraph
      - name: Login to Docker Hub
-        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4
+        uses: docker/login-action@81c6f93d4bc991e510b342a00b419b3bb4efc5c6 # v4
        if: ${{ !github.event.pull_request.head.repo.fork }}
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
@@ -48,7 +48,7 @@ jobs:
        working-directory: ${{ inputs.working-directory }}

      - name: Upload build
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
        with:
          name: test-dist
          path: ${{ inputs.working-directory }}/dist/
@@ -76,13 +76,13 @@ jobs:
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1

-      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+      - uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
        with:
          name: test-dist
          path: ${{ inputs.working-directory }}/dist/

      - name: Publish to test PyPI
-        uses: pypa/gh-action-pypi-publish@dc37677b2e1c63e2034f94d8a5b11f265b73ba33 # release/v1
+        uses: pypa/gh-action-pypi-publish@7245906fb61fa33a13554f9d5fb856fe61758086 # release/v1
        with:
          packages-dir: ${{ inputs.working-directory }}/dist/
          verbose: true
@@ -114,7 +114,7 @@ jobs:
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
      - name: Set up Python
-        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        uses: actions/setup-python@6d4fd22b20465ccc0f7354476588e8df7c9ca0e0 # v7.1.0
        with:
          python-version: "3.11"
      - name: Run check_sdk_methods script
@@ -33,7 +33,7 @@ jobs:
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1

      - name: Setup Python
-        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        uses: actions/setup-python@6d4fd22b20465ccc0f7354476588e8df7c9ca0e0 # v7.1.0
        with:
          python-version: '3.11'

@@ -51,7 +51,7 @@ jobs:
        working-directory: ${{ inputs.working-directory }}

      - name: Upload build
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
        with:
          name: dist
          path: ${{ inputs.working-directory }}/dist/
@@ -167,7 +167,7 @@ jobs:
          enable-cache: false
          working-directory: ${{ inputs.working-directory }}

-      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+      - uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
        with:
          name: dist
          path: ${{ inputs.working-directory }}/dist/
@@ -259,13 +259,13 @@ jobs:
          enable-cache: false
          working-directory: ${{ inputs.working-directory }}

-      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+      - uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
        with:
          name: dist
          path: ${{ inputs.working-directory }}/dist/

      - name: Publish package distributions to PyPI
-        uses: pypa/gh-action-pypi-publish@dc37677b2e1c63e2034f94d8a5b11f265b73ba33 # release/v1
+        uses: pypa/gh-action-pypi-publish@7245906fb61fa33a13554f9d5fb856fe61758086 # release/v1
        with:
          packages-dir: ${{ inputs.working-directory }}/dist/
          verbose: true
@@ -301,7 +301,7 @@ jobs:
          enable-cache: false
          working-directory: ${{ inputs.working-directory }}

-      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+      - uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
        with:
          name: dist
          path: ${{ inputs.working-directory }}/dist/
@@ -55,7 +55,7 @@ jobs:
    steps:
      - name: Generate GitHub App token
        id: app-token
-        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
+        uses: actions/create-github-app-token@64ab729a6294000f5aa4a4bc0b73d1f32bc45510 # v3.3.0
        with:
          app-id: ${{ secrets.ORG_MEMBERSHIP_APP_ID }}
          private-key: ${{ secrets.ORG_MEMBERSHIP_APP_PRIVATE_KEY }}
@@ -190,7 +190,7 @@ jobs:
    steps:
      - name: Generate GitHub App token
        id: app-token
-        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
+        uses: actions/create-github-app-token@64ab729a6294000f5aa4a4bc0b73d1f32bc45510 # v3.3.0
        with:
          app-id: ${{ secrets.ORG_MEMBERSHIP_APP_ID }}
          private-key: ${{ secrets.ORG_MEMBERSHIP_APP_PRIVATE_KEY }}
@@ -40,7 +40,7 @@ jobs:
    steps:
      - name: Generate GitHub App token
        id: app-token
-        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
+        uses: actions/create-github-app-token@64ab729a6294000f5aa4a4bc0b73d1f32bc45510 # v3.3.0
        with:
          app-id: ${{ secrets.ORG_MEMBERSHIP_APP_ID }}
          private-key: ${{ secrets.ORG_MEMBERSHIP_APP_PRIVATE_KEY }}
@@ -24,6 +24,39 @@ TEST=path/to/test.py make test

 Other pytest arguments can also be supplied inside the `TEST` variable.

+## Direction: LangGraph is a runtime
+
+LangGraph is consolidating as the low-level runtime for agents and workflows:
+graph execution, checkpointing, streaming, and interrupt/resume. Critical
+production systems and agent harnesses run on it, so correctness and stability
+come first. It is moving away from being a friendly SDK for building agents
+directly; agent development belongs one layer up, on a harness — Deep Agents
+(github.com/langchain-ai/deepagents, a separate repo) is the recommended one.
+
+Optimize contributions for runtime correctness, reliability, performance, and
+simplicity — not for the shortest agent example.
+
+- One way to do each thing. A change never adds a way; removals are always
+  deliberate (see below). The number of ways only goes down. No aliases,
+  overloads, extra accepted types, implicit defaults, or customization hooks
+  for convenience: ergonomics alone never justify new public surface.
+- The mandate applies to everything that implements runtime behavior, in
+  whichever repo it lives: the graph engine (`langgraph`, `langgraph-core`),
+  the checkpointers (`checkpoint*`), and the server (`langgraph-api`). The
+  client SDKs and CLI stay ergonomic but are thin, faithful clients, never a
+  second implementation of runtime behavior.
+- Agent-level packages (`prebuilt`, `langgraph-supervisor`, `langgraph-swarm`,
+  `langgraph-cua`) are maintenance-only: fix bugs, don't add agent features.
+  New examples and docs that build agents should use Deep Agents.
+- Remove deliberately, not opportunistically. Removing or changing public
+  behavior must be the stated purpose of the PR and go through the deprecation
+  process — replacement in place, removal version recorded, migration note.
+  Never drop a default or overload as a side effect of an unrelated change.
+- Behavior changes land in Python and JS together (the implementations live in
+  separate repos; note in the PR when the other one needs a matching change).
+- If a task asks for something this section rules out, say so and propose the
+  runtime-level or harness-level alternative instead of quietly implementing it.
+
 ## Libraries

 The repository contains several Python and JavaScript/TypeScript libraries.
@@ -1,5 +1,5 @@
 version = 1
-revision = 3
+revision = 5
 requires-python = ">=3.10"

 [[package]]
@@ -279,7 +279,7 @@ wheels = [

 [[package]]
 name = "langgraph-checkpoint"
-version = "4.3.0"
+version = "4.3.1"
 source = { editable = "../checkpoint" }
 dependencies = [
    { name = "langchain-core" },
@@ -686,7 +686,7 @@ wheels = [

 [[package]]
 name = "pytest"
-version = "9.1.1"
+version = "9.2.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "colorama", marker = "sys_platform == 'win32'" },
@@ -697,23 +697,23 @@ dependencies = [
    { name = "pygments" },
    { name = "tomli", marker = "python_full_version < '3.11'" },
 ]
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+sdist = { url = "https://files.pythonhosted.org/packages/79/42/bb4641652e58dedeac2ec51abc1f8cae4fee4ec63899a0999016229a0f2a/pytest-9.2.0.tar.gz", hash = "sha256:97c4f3b1f3c7414aa36465e09b8220f1d03627993bd51b1282e193753c80557b", size = 1797555, upload-time = "2026-10-27T21:30:20.728Z" }
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+    { url = "https://files.pythonhosted.org/packages/51/39/1f5d8c8877a0fa327db959c19341d4be61660de1ab6b7391f9eb805bcd67/pytest-9.2.0-py3-none-any.whl", hash = "sha256:07acdcf88ec174f907dc01af70bf52d49b014bbab03faeeade31c96b18c2e588", size = 411776, upload-time = "2026-10-27T21:30:19.131Z" },
 ]

 [[package]]
 name = "pytest-asyncio"
-version = "1.4.0"
+version = "1.4.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "backports-asyncio-runner", marker = "python_full_version < '3.11'" },
    { name = "pytest" },
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+    { url = "https://files.pythonhosted.org/packages/46/d7/cd9e2708afdbf059658adaf08bdb0792ca52489871051d6ce7d498b51277/pytest_asyncio-1.4.1-py3-none-any.whl", hash = "sha256:507afa78ec77c6661164ef1a2368bc7820383fd1a14b2a7f813de8b5a92949cc", size = 17061, upload-time = "2026-10-25T21:05:35.473Z" },
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 [[package]]
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 ]

 [[package]]
@@ -5,5 +5,5 @@ description = "Test for prerelease stuff"
 readme = "README.md"
 requires-python = ">=3.10"
 dependencies = [
-  "langgraph==1.2.6"
+  "langgraph==1.2.19"
 ]
@@ -7,7 +7,7 @@ requires-python = ">=3.10"
 dependencies = [
  "langchain-openai==1.1.14",
  "langchain-anthropic==1.4.6",
-  "langgraph==1.2.6"
+  "langgraph==1.2.19"
 ]

 [tool.uv]
@@ -21,8 +21,8 @@
    "test:all": "yarn test && yarn test:int && yarn lint:langgraph"
  },
  "dependencies": {
-    "@langchain/core": "^1.2.13",
-    "@langchain/langgraph": "^1.4.18"
+    "@langchain/core": "^1.3.1",
+    "@langchain/langgraph": "^1.5.3"
  },
  "resolutions": {
    "@langchain/langgraph-checkpoint": "1.0.4",
@@ -34,17 +34,17 @@
    "@eslint/js": "^10.0.1",
    "@tsconfig/recommended": "^1.0.13",
    "@types/jest": "^30.0.0",
-    "@typescript-eslint/eslint-plugin": "^8.70.1",
-    "@typescript-eslint/parser": "^8.70.1",
-    "dotenv": "^18.0.4",
-    "eslint": "^10.11.0",
+    "@typescript-eslint/eslint-plugin": "^8.72.1",
+    "@typescript-eslint/parser": "^8.72.1",
+    "dotenv": "^18.0.9",
+    "eslint": "^10.13.0",
    "eslint-config-prettier": "^10.1.8",
    "eslint-plugin-import": "^2.32.0",
    "eslint-plugin-no-instanceof": "^1.0.1",
-    "eslint-plugin-prettier": "^5.5.6",
+    "eslint-plugin-prettier": "^5.5.7",
    "jest": "^30.5.2",
-    "prettier": "^3.9.9",
-    "ts-jest": "^29.4.14",
+    "prettier": "^3.9.10",
+    "ts-jest": "^29.4.15",
    "typescript": "^7.0.2"
  }
 }
@@ -387,6 +387,11 @@
  resolved "https://registry.yarnpkg.com/@cfworker/json-schema/-/json-schema-4.1.1.tgz#4a2a3947ee9fa7b7c24be981422831b8674c3be6"
  integrity sha512-gAmrUZSGtKc3AiBL71iNWxDsyUC5uMaKKGdvzYsBoTW/xi42JQHl7eKV2OYzCUqvc+D2RCcf7EXY2iCyFIk6og==

+"@dual-bundle/import-meta-resolve@^4.2.1":
+  version "4.2.1"
+  resolved "https://registry.yarnpkg.com/@dual-bundle/import-meta-resolve/-/import-meta-resolve-4.2.1.tgz#cd0b25b3808cd9e684cd6cd549bbf8e1dcf05ee7"
+  integrity sha512-id+7YRUgoUX6CgV0DtuhirQWodeeA7Lf4i2x71JS/vtA5pRb/hIGWlw+G6MeXvsM+MXrz0VAydTGElX1rAfgPg==
+
 "@emnapi/core@1.10.0":
  version "1.10.0"
  resolved "https://registry.yarnpkg.com/@emnapi/core/-/core-1.10.0.tgz#380ccc8f2412ea22d1d972df7f8ee23a3b9c7467"
@@ -890,50 +895,50 @@
  resolved "https://registry.yarnpkg.com/@keyv/serialize/-/serialize-1.1.1.tgz#0c01dd3a3483882af7cf3878d4e71d505c81fc4a"
  integrity sha512-dXn3FZhPv0US+7dtJsIi2R+c7qWYiReoEh5zUntWCf4oSpMNib8FDhSoed6m3QyZdx5hK7iLFkYk3rNxwt8vTA==

-"@langchain/core@^1.2.13":
-  version "1.2.13"
-  resolved "https://registry.yarnpkg.com/@langchain/core/-/core-1.2.13.tgz#4ea4eb0308a25af350f75de2fbf34aecb819177e"
-  integrity sha512-ADGTxZ84n3civruUX1LlTOdua/PDGoni2U6TmKTX7hvRU2Jlepu8vLJI4Wnwj45KUKhUCrW94Il12Q2bxE3e8A==
+"@langchain/core@^1.3.1":
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/@langchain/core/-/core-1.3.1.tgz#f6cdb6d200def5c2e69d25ff4fef92612d1b7601"
+  integrity sha512-jt0miXWxNi+rbZLeSeZkc7BBYKnWopksoJSpB+P3zaYgzMMNwkAPWqnd1zSClfYGwLZPXQbbTtaqv8ZFXmE3FA==
  dependencies:
    "@cfworker/json-schema" "^4.0.2"
    "@standard-schema/spec" "^1.1.0"
    js-tiktoken "^1.0.12"
-    langsmith ">=0.5.0 <1.0.0"
+    langsmith ">=0.11.0 <1.0.0"
    mustache "^4.2.0"
    p-queue "^6.6.2"
    zod "^3.25.76 || ^4"

-"@langchain/langgraph-checkpoint@1.0.4", "@langchain/langgraph-checkpoint@^1.1.5":
+"@langchain/langgraph-checkpoint@1.0.4", "@langchain/langgraph-checkpoint@^1.2.1":
  version "1.0.4"
  resolved "https://registry.yarnpkg.com/@langchain/langgraph-checkpoint/-/langgraph-checkpoint-1.0.4.tgz#893aa7255b2fe810fdeb50281f6750a3b0a6fef7"
  integrity sha512-1y5MgZ0gXXrtmoy56e3kaBChI3GwFPIKl27xkrHwN+VE/3iUsyr9gO3Jtp7kdKAe6diZGbcas5bdC/r0yUwTZA==
  dependencies:
    uuid "^14.0.0"

-"@langchain/langgraph-sdk@~1.12.0":
-  version "1.12.0"
-  resolved "https://registry.yarnpkg.com/@langchain/langgraph-sdk/-/langgraph-sdk-1.12.0.tgz#b063a7eba0a66f51cbc841a824626a47eca1eec9"
-  integrity sha512-F3AOZjKZRUGmE3FzY+RaVZI6WzXOkwnuF7jqgto6rDPSnO9OdVdYGvwGDi3jjRGf5xLoDtX2dpsR9z5KptU+5A==
+"@langchain/langgraph-sdk@~1.12.8":
+  version "1.12.9"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph-sdk/-/langgraph-sdk-1.12.9.tgz#b8e66e00af207f18e56eb6cd916c1ee8e7608745"
+  integrity sha512-A1LkLPVu00dj+9aErXPBLhmFURHtnnRO9KRFST+xAwurqQTa+LxC9ixxF7p+ZMo5P70qMFoaP8Ud2wuZmYD4xw==
  dependencies:
-    "@langchain/protocol" "^0.0.19"
+    "@langchain/protocol" "^0.0.20"
    "@types/json-schema" "^7.0.15"
    p-queue "^9.0.1"
    p-retry "^7.1.1"

-"@langchain/langgraph@^1.4.18":
-  version "1.4.18"
-  resolved "https://registry.yarnpkg.com/@langchain/langgraph/-/langgraph-1.4.18.tgz#c8cc4ea734834262fdb00ae6a45a0849620e4fd2"
-  integrity sha512-yrMMJ9hk2NVMD2xU2WoVrgFawAU6s/RzEl/dX9BhlyxZHazo1wHY35z4K2BIBzTUh4z3giCzrUoqRAqW2CWpWg==
+"@langchain/langgraph@^1.5.3":
+  version "1.5.3"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph/-/langgraph-1.5.3.tgz#9a921c9e099c2e3009f34987e0acb2645636bb74"
+  integrity sha512-cuqswNgfoF/J3/r9K5Qm7EnQc2f0mz7uWlAAs751KWhoK8sKfmuLABghF4b1LYq1NpK72XG1x8lWPyg45M8BOA==
  dependencies:
-    "@langchain/langgraph-checkpoint" "^1.1.5"
-    "@langchain/langgraph-sdk" "~1.12.0"
-    "@langchain/protocol" "^0.0.19"
+    "@langchain/langgraph-checkpoint" "^1.2.1"
+    "@langchain/langgraph-sdk" "~1.12.8"
+    "@langchain/protocol" "^0.0.20"
    "@standard-schema/spec" "1.1.0"

-"@langchain/protocol@^0.0.19":
-  version "0.0.19"
-  resolved "https://registry.yarnpkg.com/@langchain/protocol/-/protocol-0.0.19.tgz#7fe43fed115dc34b3b4c246e8d5283fbcbfab7b0"
-  integrity sha512-9hKcRrH7cBX6gfutdfXPoft1OCchHe4FEpALoDJMl5Qu+n/YG5ynZmyu8+8cxORlPwHBoKTxggvXz+76M1yX1Q==
+"@langchain/protocol@^0.0.20":
+  version "0.0.20"
+  resolved "https://registry.yarnpkg.com/@langchain/protocol/-/protocol-0.0.20.tgz#441a57a6176f634306d9214da65d35033355d5e9"
+  integrity sha512-sxlkDG2/HGyjDFLTJ8B/o3oglRjOv8iLCFgrV0550/Vym3V6RZ0SUjAQFe8jrLQw8ZXjERy3swJp5OODBSrUYA==

 "@napi-rs/wasm-runtime@^1.1.4":
  version "1.2.3"
@@ -1180,110 +1185,100 @@
  dependencies:
    "@types/yargs-parser" "*"

-"@typescript-eslint/eslint-plugin@^8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.70.1.tgz#d404bac4cb04e4dcd20086e46e13c952bd0771e0"
-  integrity sha512-nDNrUQ/4ruSNYbu749TRY7cfrzPtoLHEXSNBI8aaNY32LlZCajixqRf3FqcKC4p5Cam4VOHYx/t+i5+nKXvrqA==
+"@typescript-eslint/eslint-plugin@^8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.72.1.tgz#95e29de63ce7ed793eb1c6efd9f8b802ce808262"
+  integrity sha512-5CokTWXpmbylfFabsbvHC0CAw3XLaGnoa+nFJX5FR592h/LoZsENUE6p/rg5xvkKrFEXz6pYmgI29AgXc2N3BQ==
  dependencies:
    "@eslint-community/regexpp" "^4.12.2"
-    "@typescript-eslint/scope-manager" "8.70.1"
-    "@typescript-eslint/type-utils" "8.70.1"
-    "@typescript-eslint/utils" "8.70.1"
-    "@typescript-eslint/visitor-keys" "8.70.1"
+    "@typescript-eslint/scope-manager" "8.72.1"
+    "@typescript-eslint/type-utils" "8.72.1"
+    "@typescript-eslint/utils" "8.72.1"
+    "@typescript-eslint/visitor-keys" "8.72.1"
    ignore "^7.0.5"
    natural-compare "^1.4.0"
    ts-api-utils "^2.5.0"

-"@typescript-eslint/parser@^8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-8.70.1.tgz#6c99b7b954efc05dae179001c8b477d1a8948dcf"
-  integrity sha512-nO974WLllwhSFWQXnMLj6nDGa8f0khKEz1JzpPJ1u7Vm/4X1X6ZHajpoknU4bb41vJyMB0HHVyS2GqdhWfIXZw==
+"@typescript-eslint/parser@^8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-8.72.1.tgz#7370b68dadc3819b9aac68ea340bd8b43ee62379"
+  integrity sha512-ZGwZP4OCfyA0AQTpEAMWz+rtX01DRhQWW5hB0ucKDEIX5U7jdmPSaMx94rQfaPAQzIYz2BimOgKOJtjfpRFQ9g==
  dependencies:
-    "@typescript-eslint/scope-manager" "8.70.1"
-    "@typescript-eslint/types" "8.70.1"
-    "@typescript-eslint/typescript-estree" "8.70.1"
-    "@typescript-eslint/visitor-keys" "8.70.1"
+    "@typescript-eslint/scope-manager" "8.72.1"
+    "@typescript-eslint/types" "8.72.1"
+    "@typescript-eslint/typescript-estree" "8.72.1"
+    "@typescript-eslint/visitor-keys" "8.72.1"
    debug "^4.4.3"

-"@typescript-eslint/project-service@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/project-service/-/project-service-8.70.1.tgz#d5635594cc8a573f0e15a772b1704e93a00134c1"
-  integrity sha512-62xOgboPfwc3/IgPSX/W6oQR3ZbF04194FPGUGH8HL8iLFHbt/456/8Ph1wLNUgVF+s94FlHoipBsz+v7+LMnA==
+"@typescript-eslint/project-service@8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/project-service/-/project-service-8.72.1.tgz#1d09902a9c23f6cfab779e5acc78a45abf540add"
+  integrity sha512-fAuVMkwdO/huI8nyo/WKnNKf6Gag93S56Rh3Ts5mGcavwSdaN8tRg1gCeIGX8PF+nzp1BjGfO4gHhGzW1J6jTg==
  dependencies:
-    "@typescript-eslint/tsconfig-utils" "^8.70.1"
-    "@typescript-eslint/types" "^8.70.1"
+    "@typescript-eslint/tsconfig-utils" "^8.72.1"
+    "@typescript-eslint/types" "^8.72.1"
    debug "^4.4.3"

-"@typescript-eslint/scope-manager@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-8.70.1.tgz#0feeae4da2d279b960cdbfe5e0a02fbf1195e93f"
-  integrity sha512-Pa0EeSeAusQc1WbjQMac+YfenewYTBu0KjgYvkUKwhXaHUKbFog23Dm/rp0DX/6tyYOQ3Xl1a+3EcFNZynGHCw==
+"@typescript-eslint/scope-manager@8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-8.72.1.tgz#a0fb4dfe5aa2b0149b7a2d1fd00d947992b13067"
+  integrity sha512-lC/t6eMCZZQAAKZEYGL6RDVSuFehpdmMT6h+nJIjIa6oylN/PwDgDVtEIbB7O9xFfZYtZAYLoLlDNWKJhtF+uQ==
  dependencies:
-    "@typescript-eslint/types" "8.70.1"
-    "@typescript-eslint/visitor-keys" "8.70.1"
+    "@typescript-eslint/types" "8.72.1"
+    "@typescript-eslint/visitor-keys" "8.72.1"

-"@typescript-eslint/tsconfig-utils@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.70.1.tgz#e9353a6e5f3498a29b40946ca3e11f6166fef09e"
-  integrity sha512-jumze1fPI+sDOaM2TWGQdn39PDxTr7TZGeuyLkAbNyx2vtMT3uRnVKChN0hfht5V2TugphJzF6bYXvBcE09qqg==
+"@typescript-eslint/tsconfig-utils@8.72.1", "@typescript-eslint/tsconfig-utils@^8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.72.1.tgz#07394c85095ee38455e76bc221ba23650af73e44"
+  integrity sha512-e4D5R5vpeAEPBxT2BAzsFQL3sbwyeeeo5+aczgNSRK1V734jE7pTqaGFU+fXapWEQwnZbpFaTn32+Z8DwS6OTg==

-"@typescript-eslint/tsconfig-utils@^8.70.1":
-  version "8.71.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.71.0.tgz#83a69c9a514af8f5ff099cc6c0d609c273e8f039"
-  integrity sha512-Z1UlWHADEK2Mlb9NpWfDeSjqoZ5EyrOv4R3eQpbkzqn/EwaIdOpXXupEA1+0ZIOSJSZZDBHG0BrQyN8zUG6Pwg==
-
-"@typescript-eslint/type-utils@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/type-utils/-/type-utils-8.70.1.tgz#6ea36f2c7dc0776c1c8e1c380b4896f00bc4c27f"
-  integrity sha512-7zKTnyvaVWqzLZHPFQtX1hVHqgkMC+WebPWakNCSyrQVbIP1AM0L0TlBZtACldIRb6PptI8Odk+jyZ5kP3B1VA==
+"@typescript-eslint/type-utils@8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/type-utils/-/type-utils-8.72.1.tgz#f1f592f63bd9726de21191aae3ccf64a813914b8"
+  integrity sha512-iY2wlmyrXJmx4yxUGP3aYCFF3cA/6ShddOKmLU2dx7LnEykbAM8WThlxZEfd1NddqceF6eJmZUayxx9oKIYNlg==
  dependencies:
-    "@typescript-eslint/types" "8.70.1"
-    "@typescript-eslint/typescript-estree" "8.70.1"
-    "@typescript-eslint/utils" "8.70.1"
+    "@typescript-eslint/types" "8.72.1"
+    "@typescript-eslint/typescript-estree" "8.72.1"
+    "@typescript-eslint/utils" "8.72.1"
    debug "^4.4.3"
    ts-api-utils "^2.5.0"

-"@typescript-eslint/types@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-8.70.1.tgz#2022b9d07d057174eba25b9bbd289641d262a196"
-  integrity sha512-Dm1ypdhhrGCTyyehxElhgJ6kgk8MVCv5qXdoOVqPr1uqk42jX8KjrZqhROvdShczA8qrDoYiOWn1ykWlx2k81Q==
+"@typescript-eslint/types@8.72.1", "@typescript-eslint/types@^8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-8.72.1.tgz#067d8f738c294611e33a1425ae43ac9b9c2f24e3"
+  integrity sha512-LmE5IhQet1BWOWEXqBrVtBPsMAOQ6Nzk35d+WLh3mk4EUF33sqlfxjio1MdYeSvKSG5skactKKuixBIKXhL4Rw==

-"@typescript-eslint/types@^8.70.1":
-  version "8.71.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-8.71.0.tgz#a230a121e71665060afe27d1f1ad110371f9451e"
-  integrity sha512-cJ4OoxPGWvFnBTnSZyaU+qJzGTqPTGJY+gDchj6cRyLRdmIdt4rcsE4twj+zPfrNiWuVi38wijHzShL++Z9atQ==
-
-"@typescript-eslint/typescript-estree@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-8.70.1.tgz#ced48fee6f7043835d2edfed9786ae74813a3c99"
-  integrity sha512-TU8PwyGN0PQJUcE96mw8eCQ44SmxGdQlJmlWakHaHQ15eIuuvye5yNtmh/i6oS88jzXVQB71xdNkbkB/fMwL0g==
+"@typescript-eslint/typescript-estree@8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-8.72.1.tgz#e93b9cc3a56bf12f5fed857bb8f4963cce7924ee"
+  integrity sha512-DAlUoUV93hIvrtIQLwCbmZQYVZwOMhiHJrOVUUIWicFZaIYjTRqlY3I/NZevfkLmSqkNHRu2qYDcq9lrn16oOQ==
  dependencies:
-    "@typescript-eslint/project-service" "8.70.1"
-    "@typescript-eslint/tsconfig-utils" "8.70.1"
-    "@typescript-eslint/types" "8.70.1"
-    "@typescript-eslint/visitor-keys" "8.70.1"
+    "@typescript-eslint/project-service" "8.72.1"
+    "@typescript-eslint/tsconfig-utils" "8.72.1"
+    "@typescript-eslint/types" "8.72.1"
+    "@typescript-eslint/visitor-keys" "8.72.1"
    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@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/utils/-/utils-8.70.1.tgz#6a97887cee702df513692f5cdc7f79baeef48e02"
-  integrity sha512-Esgul8MsnKnRLdYU2Eb2cRV9bS5HJYtKj1ByJnOzzG2M58DGdSUQ1jUuILxipqcpB2h9WLrbD5GijIWUjX/Tqw==
+"@typescript-eslint/utils@8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/utils/-/utils-8.72.1.tgz#f210c1bf4a25aa1306df80c702ed30bbbc9b4d3d"
+  integrity sha512-5v5liypurJBFHCBNqh/RjsymAD+VWcE0djuGY/BUqp5fC3Qn+luWDEksjuTtWjPn6i5zQlUtkZCRG/CYG0yCkA==
  dependencies:
    "@eslint-community/eslint-utils" "^4.9.1"
-    "@typescript-eslint/scope-manager" "8.70.1"
-    "@typescript-eslint/types" "8.70.1"
-    "@typescript-eslint/typescript-estree" "8.70.1"
+    "@typescript-eslint/scope-manager" "8.72.1"
+    "@typescript-eslint/types" "8.72.1"
+    "@typescript-eslint/typescript-estree" "8.72.1"

-"@typescript-eslint/visitor-keys@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-8.70.1.tgz#b4cde0ed16982bd963a6310fcae554f59fd14124"
-  integrity sha512-Vwj9lUIW5Xq3wQ9w6gv3R86g1hMK8f2zNOdGTAgeXUMMXFK78G9ruCjjqutHMNJc0+CH7LYRnHeUB9IT8wFmcw==
+"@typescript-eslint/visitor-keys@8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-8.72.1.tgz#c7aec9883b44ef795f1b8200df81d9d44d355de7"
+  integrity sha512-SB8xqipSzZHUePCCLNeYxqnxq83X61/qzNhjQGbTfjxGZIeOEP7tBgWYX05Tcd6CgE02WdTJnh5b8kMZJ/+bnQ==
  dependencies:
-    "@typescript-eslint/types" "8.70.1"
+    "@typescript-eslint/types" "8.72.1"
    eslint-visitor-keys "^5.0.0"

 "@typescript/typescript-aix-ppc64@7.0.2":
@@ -2109,10 +2104,10 @@ doctrine@^2.1.0:
  dependencies:
    esutils "^2.0.2"

-dotenv@^18.0.4:
-  version "18.0.4"
-  resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-18.0.4.tgz#419bbe784f30915bfeb10e2d407e13ca5528504f"
-  integrity sha512-jGt9uI5BIxpVO15kvy+iEFqNAwxYClKWnkptLjSNPnFLC003Imd0ofr3aEVsbpHdSBdSsbcApNIlz4nbyGMwdA==
+dotenv@^18.0.9:
+  version "18.0.9"
+  resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-18.0.9.tgz#5c565760ce7e6fb69f9477ebcd1a3b64c766f9c8"
+  integrity sha512-3fVOW4cB02R066PUSwn8O4TJyz9NckQl7F81blIbaq9jKBm2tSmOKky7ZHIXzGvkVPXCSn6jkpziBPZdGFs8Tw==

 dunder-proto@^1.0.0, dunder-proto@^1.0.1:
  version "1.0.1"
@@ -2430,13 +2425,13 @@ 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@^5.5.6:
-  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==
+eslint-plugin-prettier@^5.5.7:
+  version "5.5.7"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-prettier/-/eslint-plugin-prettier-5.5.7.tgz#ebef3acc2d664333b1356b717780198abc635398"
+  integrity sha512-WjHyn3GrFd+ZR0rzsLiM4zJZ35PZMOE0SUIxzGmnWNG0126yNfJKJzObmmkYDwHJfGlkz3PSlzyG9ez/LJntwg==
  dependencies:
    prettier-linter-helpers "^1.0.1"
-    synckit "^0.11.13"
+    synckit "^0.12.3"

 eslint-scope@^9.1.2:
  version "9.1.2"
@@ -2463,10 +2458,10 @@ 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@^10.11.0:
-  version "10.11.0"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-10.11.0.tgz#304d1591b7c6a327e3f64b4f550f99fda160ae20"
-  integrity sha512-P7a6UEEqb9G95MYAtqkmsTbVXIYyzIfl6NGOIJk162PaahFxFyeGcrlXYFSiagECg4sEm8IseJdZBKR3rx6MsQ==
+eslint@^10.13.0:
+  version "10.13.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-10.13.0.tgz#a8a4742648c0fa9131f429b509de5407682d4864"
+  integrity sha512-UohDjD4zSzEwhf58M3O7vc/ycc8O1I7dNlhtD0WxE8Px8EHNJKtUwzBqrzeGhisRuv2ag4sAYswszCJRgKXYUg==
  dependencies:
    "@eslint-community/eslint-utils" "^4.8.0"
    "@eslint-community/regexpp" "^4.12.2"
@@ -2866,7 +2861,7 @@ graceful-fs@^4.2.11:
  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.11.tgz#4183e4e8bf08bb6e05bbb2f7d2e0c8f712ca40e3"
  integrity sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ==

-handlebars@^4.7.9:
+handlebars@^4.7.10:
  version "4.7.10"
  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.7.10.tgz#12419ea1b41391b3ffcf003f2164dcbce090c417"
  integrity sha512-P5VJMVM7qgBn6vjXMw8WG9uVI+ncf2pi72j4de4yz5ZULLj2RGqLYaKOYGsgyrViQ0tePOVlN1tDCCXXtFqXKg==
@@ -3854,10 +3849,10 @@ keyv@^5.6.0:
  dependencies:
    "@keyv/serialize" "^1.1.1"

-"langsmith@>=0.5.0 <1.0.0":
-  version "0.6.3"
-  resolved "https://registry.yarnpkg.com/langsmith/-/langsmith-0.6.3.tgz#a3d8ad58d66a47d3697e3c69b2be3f6df5233190"
-  integrity sha512-pXrQ4/4myQvjFFOAUmt5pWRrLEZR20gzIJD7MNdUH+5/S5nLI4ZRBo/SYKC6coaYj9pYTfQdBIzcs+3kfJ5uDA==
+"langsmith@>=0.11.0 <1.0.0":
+  version "0.11.6"
+  resolved "https://registry.yarnpkg.com/langsmith/-/langsmith-0.11.6.tgz#cdc0f89a14632f8b172deea5daa1ee625f7442c3"
+  integrity sha512-5hfJM5DEZpXFxUS3U9nY2CMyBRmFnhkJj7znUODJ8vsr/Jx38tGJl4GIhV484xAY7yQFWrFOTDr33PB95kHUKg==
  dependencies:
    p-queue "6.6.2"

@@ -4312,10 +4307,10 @@ prettier-linter-helpers@^1.0.1:
  dependencies:
    fast-diff "^1.1.2"

-prettier@^3.9.9:
-  version "3.9.9"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.9.9.tgz#09b826918c91cd4cbc80e0cbd1d2a922ff04f233"
-  integrity sha512-Z/CJHIkdujO/OtN7nXUii0Rf3VT5SRuhjBA82Xvu2XhBUgX3nhP67T0LHceBdQLex7OOFGTox+Q5Yg8Jk2Qivg==
+prettier@^3.9.10:
+  version "3.9.10"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.9.10.tgz#ac378e432f1a7381518f2e080816bbaefa38d585"
+  integrity sha512-skGHTH1Yb9QvaTC4hWnRTzEYtCpApF0UMBPz+t/0ZPzP8ihefo/btKd+QA7pUE0fEwA1SbS/NmhyEcstdXOIdA==

 pretty-format@30.2.0, pretty-format@^30.0.0:
  version "30.2.0"
@@ -4759,13 +4754,21 @@ 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@^0.11.13, synckit@^0.11.8:
+synckit@^0.11.8:
  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" "^0.3.6"

+synckit@^0.12.3:
+  version "0.12.3"
+  resolved "https://registry.yarnpkg.com/synckit/-/synckit-0.12.3.tgz#6e30a3441d095ed04c311077350ce205465512d6"
+  integrity sha512-U+/AXT6LWsxnj2vz9HeUuPWBNgdWxjyIEjEPdbJARC9txmgPzo2VEdqnFo4hHaNyMPtycyVJrSaQYeQv/PoyyA==
+  dependencies:
+    "@dual-bundle/import-meta-resolve" "^4.2.1"
+    "@pkgr/core" "^0.3.6"
+
 test-exclude@^7.0.1:
  version "7.0.2"
  resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-7.0.2.tgz#482392077630bc57d5630c13abe908bb910dfc65"
@@ -4800,14 +4803,14 @@ ts-api-utils@^2.5.0:
  resolved "https://registry.yarnpkg.com/ts-api-utils/-/ts-api-utils-2.5.0.tgz#4acd4a155e22734990a5ed1fe9e97f113bcb37c1"
  integrity sha512-OJ/ibxhPlqrMM0UiNHJ/0CKQkoKF243/AEmplt3qpRgkW8VG7IfOS41h7V8TjITqdByHzrjcS/2si+y4lIh8NA==

-ts-jest@^29.4.14:
-  version "29.4.14"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-29.4.14.tgz#cb36c043df0fada861c8b604a5d514f953126180"
-  integrity sha512-+943G6wCX5E3VpzTQhBGBFntCmdT+QAkTvUlp03edTONFBvqskuXPhpyX16xdUotO4P5HQKyppldSWjocoltLQ==
+ts-jest@^29.4.15:
+  version "29.4.15"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-29.4.15.tgz#238f2d495066a33ca973a54a36a5ef228262a9ad"
+  integrity sha512-s2qmEUYFRqbjz1wv0EmccNPVOb45HOFpFuhzQJLKShYVisuTbCFPIIAIV2EuK5rIxb4BejLDbH7dnBZfYjybUQ==
  dependencies:
    bs-logger "^0.2.6"
    fast-json-stable-stringify "^2.1.0"
-    handlebars "^4.7.9"
+    handlebars "^4.7.10"
    json5 "^2.2.3"
    lodash.memoize "^4.1.2"
    make-error "^1.3.6"
@@ -9,8 +9,8 @@
  },
  "dependencies": {
    "@js-monorepo-example/shared": "*",
-    "@langchain/core": "^1.2.13",
-    "@langchain/langgraph": "^1.4.18"
+    "@langchain/core": "^1.3.1",
+    "@langchain/langgraph": "^1.5.3"
  },
  "devDependencies": {
    "typescript": "^7.0.2"
@@ -17,18 +17,18 @@
    "lint": "eslint 'apps/**/*.ts' 'libs/**/*.ts'"
  },
  "devDependencies": {
-    "turbo": "^2.11.5",
+    "turbo": "^2.11.10",
    "typescript": "^7.0.2",
    "@tsconfig/recommended": "^1.0.13",
    "@eslint/eslintrc": "^3.3.7",
    "@eslint/js": "^10.0.1",
-    "eslint": "^10.11.0",
+    "eslint": "^10.13.0",
    "eslint-config-prettier": "^10.1.8",
    "eslint-plugin-import": "^2.27.5",
    "eslint-plugin-no-instanceof": "^1.0.1",
-    "eslint-plugin-prettier": "^5.5.6",
-    "@typescript-eslint/eslint-plugin": "^8.70.1",
-    "@typescript-eslint/parser": "^8.70.1",
-    "prettier": "^3.9.9"
+    "eslint-plugin-prettier": "^5.5.7",
+    "@typescript-eslint/eslint-plugin": "^8.72.1",
+    "@typescript-eslint/parser": "^8.72.1",
+    "prettier": "^3.9.10"
  }
 }
@@ -25,6 +25,11 @@
  resolved "https://registry.yarnpkg.com/@cfworker/json-schema/-/json-schema-4.1.1.tgz#4a2a3947ee9fa7b7c24be981422831b8674c3be6"
  integrity sha512-gAmrUZSGtKc3AiBL71iNWxDsyUC5uMaKKGdvzYsBoTW/xi42JQHl7eKV2OYzCUqvc+D2RCcf7EXY2iCyFIk6og==

+"@dual-bundle/import-meta-resolve@^4.2.1":
+  version "4.2.1"
+  resolved "https://registry.yarnpkg.com/@dual-bundle/import-meta-resolve/-/import-meta-resolve-4.2.1.tgz#cd0b25b3808cd9e684cd6cd549bbf8e1dcf05ee7"
+  integrity sha512-id+7YRUgoUX6CgV0DtuhirQWodeeA7Lf4i2x71JS/vtA5pRb/hIGWlw+G6MeXvsM+MXrz0VAydTGElX1rAfgPg==
+
 "@eslint-community/eslint-utils@^4.8.0", "@eslint-community/eslint-utils@^4.9.1":
  version "4.9.1"
  resolved "https://registry.yarnpkg.com/@eslint-community/eslint-utils/-/eslint-utils-4.9.1.tgz#4e90af67bc51ddee6cdef5284edf572ec376b595"
@@ -134,48 +139,48 @@
  resolved "https://registry.yarnpkg.com/@keyv/serialize/-/serialize-1.1.1.tgz#0c01dd3a3483882af7cf3878d4e71d505c81fc4a"
  integrity sha512-dXn3FZhPv0US+7dtJsIi2R+c7qWYiReoEh5zUntWCf4oSpMNib8FDhSoed6m3QyZdx5hK7iLFkYk3rNxwt8vTA==

-"@langchain/core@^1.2.13":
-  version "1.2.13"
-  resolved "https://registry.yarnpkg.com/@langchain/core/-/core-1.2.13.tgz#4ea4eb0308a25af350f75de2fbf34aecb819177e"
-  integrity sha512-ADGTxZ84n3civruUX1LlTOdua/PDGoni2U6TmKTX7hvRU2Jlepu8vLJI4Wnwj45KUKhUCrW94Il12Q2bxE3e8A==
+"@langchain/core@^1.3.1":
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/@langchain/core/-/core-1.3.1.tgz#f6cdb6d200def5c2e69d25ff4fef92612d1b7601"
+  integrity sha512-jt0miXWxNi+rbZLeSeZkc7BBYKnWopksoJSpB+P3zaYgzMMNwkAPWqnd1zSClfYGwLZPXQbbTtaqv8ZFXmE3FA==
  dependencies:
    "@cfworker/json-schema" "^4.0.2"
    "@standard-schema/spec" "^1.1.0"
    js-tiktoken "^1.0.12"
-    langsmith ">=0.5.0 <1.0.0"
+    langsmith ">=0.11.0 <1.0.0"
    mustache "^4.2.0"
    p-queue "^6.6.2"
    zod "^3.25.76 || ^4"

-"@langchain/langgraph-checkpoint@^1.1.5":
-  version "1.1.5"
-  resolved "https://registry.yarnpkg.com/@langchain/langgraph-checkpoint/-/langgraph-checkpoint-1.1.5.tgz#c793177f9afcce31a1e9922f317f88fec1254282"
-  integrity sha512-BwDwl5VeTOh6CVuiIPgsUgfK51vTJDMSbFcSCUfjJWsl8/DPdK/mbv+ejxJstkSk/BlSPMP4JfXWcN6jD2ea2Q==
+"@langchain/langgraph-checkpoint@^1.2.1":
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph-checkpoint/-/langgraph-checkpoint-1.2.2.tgz#cbfdf0d461385769665e26f70e41f1291ed1d37e"
+  integrity sha512-KL3nzi7I61ll5nANCQe5RoJ5SqTFrE+si9IK6k7IIj9OrPkIKT/Dz0w8CyJF+K7OEuJfA33HvPrZqfzzW1DXDA==

-"@langchain/langgraph-sdk@~1.12.0":
-  version "1.12.0"
-  resolved "https://registry.yarnpkg.com/@langchain/langgraph-sdk/-/langgraph-sdk-1.12.0.tgz#b063a7eba0a66f51cbc841a824626a47eca1eec9"
-  integrity sha512-F3AOZjKZRUGmE3FzY+RaVZI6WzXOkwnuF7jqgto6rDPSnO9OdVdYGvwGDi3jjRGf5xLoDtX2dpsR9z5KptU+5A==
+"@langchain/langgraph-sdk@~1.12.8":
+  version "1.12.9"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph-sdk/-/langgraph-sdk-1.12.9.tgz#b8e66e00af207f18e56eb6cd916c1ee8e7608745"
+  integrity sha512-A1LkLPVu00dj+9aErXPBLhmFURHtnnRO9KRFST+xAwurqQTa+LxC9ixxF7p+ZMo5P70qMFoaP8Ud2wuZmYD4xw==
  dependencies:
-    "@langchain/protocol" "^0.0.19"
+    "@langchain/protocol" "^0.0.20"
    "@types/json-schema" "^7.0.15"
    p-queue "^9.0.1"
    p-retry "^7.1.1"

-"@langchain/langgraph@^1.4.18":
-  version "1.4.18"
-  resolved "https://registry.yarnpkg.com/@langchain/langgraph/-/langgraph-1.4.18.tgz#c8cc4ea734834262fdb00ae6a45a0849620e4fd2"
-  integrity sha512-yrMMJ9hk2NVMD2xU2WoVrgFawAU6s/RzEl/dX9BhlyxZHazo1wHY35z4K2BIBzTUh4z3giCzrUoqRAqW2CWpWg==
+"@langchain/langgraph@^1.5.3":
+  version "1.5.3"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph/-/langgraph-1.5.3.tgz#9a921c9e099c2e3009f34987e0acb2645636bb74"
+  integrity sha512-cuqswNgfoF/J3/r9K5Qm7EnQc2f0mz7uWlAAs751KWhoK8sKfmuLABghF4b1LYq1NpK72XG1x8lWPyg45M8BOA==
  dependencies:
-    "@langchain/langgraph-checkpoint" "^1.1.5"
-    "@langchain/langgraph-sdk" "~1.12.0"
-    "@langchain/protocol" "^0.0.19"
+    "@langchain/langgraph-checkpoint" "^1.2.1"
+    "@langchain/langgraph-sdk" "~1.12.8"
+    "@langchain/protocol" "^0.0.20"
    "@standard-schema/spec" "1.1.0"

-"@langchain/protocol@^0.0.19":
-  version "0.0.19"
-  resolved "https://registry.yarnpkg.com/@langchain/protocol/-/protocol-0.0.19.tgz#7fe43fed115dc34b3b4c246e8d5283fbcbfab7b0"
-  integrity sha512-9hKcRrH7cBX6gfutdfXPoft1OCchHe4FEpALoDJMl5Qu+n/YG5ynZmyu8+8cxORlPwHBoKTxggvXz+76M1yX1Q==
+"@langchain/protocol@^0.0.20":
+  version "0.0.20"
+  resolved "https://registry.yarnpkg.com/@langchain/protocol/-/protocol-0.0.20.tgz#441a57a6176f634306d9214da65d35033355d5e9"
+  integrity sha512-sxlkDG2/HGyjDFLTJ8B/o3oglRjOv8iLCFgrV0550/Vym3V6RZ0SUjAQFe8jrLQw8ZXjERy3swJp5OODBSrUYA==

 "@pkgr/core@^0.3.6":
  version "0.3.6"
@@ -197,35 +202,35 @@
  resolved "https://registry.yarnpkg.com/@tsconfig/recommended/-/recommended-1.0.13.tgz#269fce3ad04ca70b93269ff44cca81b950f542da"
  integrity sha512-sySRuBfMKyKO/j2ZAhR8kSembhjuPEV4Ra3AHtmWLq51+iGaudr45crPSzNC5b7/Ctrh9dfUpBuTlYrH6rM58Q==

-"@turbo/darwin-64@2.11.5":
-  version "2.11.5"
-  resolved "https://registry.yarnpkg.com/@turbo/darwin-64/-/darwin-64-2.11.5.tgz#6ddc580c2b7d05e578ca1c06b3f61473f4b7b00e"
-  integrity sha512-KdY4y7BBjIisl+jAkb3FFaRjClGqHyaeHCcVcCT8LBzFFwUu6thgfxyRZAx0uL4KoxLmH+iOan8UhVf/aDDcaA==
+"@turbo/darwin-64@2.11.10":
+  version "2.11.10"
+  resolved "https://registry.yarnpkg.com/@turbo/darwin-64/-/darwin-64-2.11.10.tgz#824aa74de92806ef2a21932b4148feaea98e8887"
+  integrity sha512-By4idRap5+nLnMuRzLB4qkOPRlvNdyY1ne4VJYDyUoUB11H94k7uif9mbe3JT8JSNXs1D68uMcBj6hJ/jMQRvA==

-"@turbo/darwin-arm64@2.11.5":
-  version "2.11.5"
-  resolved "https://registry.yarnpkg.com/@turbo/darwin-arm64/-/darwin-arm64-2.11.5.tgz#a756c67bb828cd00d03e909769dd39453c1f1e69"
-  integrity sha512-ToZDGi2u410+TfRtC/O1/LpujGgvNJoRBZnwVXob7oO0+3OSlwIO3zofXKUvwQvlba7a8ZXPyCZwufjAXd7f0w==
+"@turbo/darwin-arm64@2.11.10":
+  version "2.11.10"
+  resolved "https://registry.yarnpkg.com/@turbo/darwin-arm64/-/darwin-arm64-2.11.10.tgz#e9de7c9b9eb2a428cd4fb63fb9826696107339a4"
+  integrity sha512-pyEYlVcuexOPa92p0Wlwl9YT1Is5D60lxN3ItWm3g30YLvFaUq86TF4BBWg5ZAc0uMTnrOzCvuCsOBTdzUWnRQ==

-"@turbo/linux-64@2.11.5":
-  version "2.11.5"
-  resolved "https://registry.yarnpkg.com/@turbo/linux-64/-/linux-64-2.11.5.tgz#b95c05218aebb06c06e5f991d48c55b78dc5e005"
-  integrity sha512-Ub2d/nAbdWLaSytcEaPp1wm/YuIvHEIqNrCRMI/UgOGyFdOhgxm8VyWPAJilQWRYxYVrqEUoy2K5S5K8SG50rA==
+"@turbo/linux-64@2.11.10":
+  version "2.11.10"
+  resolved "https://registry.yarnpkg.com/@turbo/linux-64/-/linux-64-2.11.10.tgz#e9f48a6383e7c6926a488f329343792de3ee537c"
+  integrity sha512-1tYeR/IDZ5HEdsb0jNq2L2xam5nMQ+g80tlV2BZmv4OFw+pMcUM0mMmUcfc5wXPPNHVNPuDMjh9Y8G8HgXPLZA==

-"@turbo/linux-arm64@2.11.5":
-  version "2.11.5"
-  resolved "https://registry.yarnpkg.com/@turbo/linux-arm64/-/linux-arm64-2.11.5.tgz#c7a1d1a44c8c8dcff4b72fbafe9a5059c8fb668a"
-  integrity sha512-JQjmGxp724Wuft9FAxPMtmBur1CEdUyxJ+FVoIvKkgj63rXHl9PYCWrsU2tMjVi609XTQ3M8vZD9Yc9qVAVYrw==
+"@turbo/linux-arm64@2.11.10":
+  version "2.11.10"
+  resolved "https://registry.yarnpkg.com/@turbo/linux-arm64/-/linux-arm64-2.11.10.tgz#d76831f850d30ef386b221b8ee72270a5ee7e2ba"
+  integrity sha512-HuekQxvVGhUd46g1Im/DKdOtglHr4/gguZAvzEpPUgtxNkztSa8lWhQEGQ+EmPQ0n7w19qjThFU+OfEEd0uvlw==

-"@turbo/windows-64@2.11.5":
-  version "2.11.5"
-  resolved "https://registry.yarnpkg.com/@turbo/windows-64/-/windows-64-2.11.5.tgz#60bdaaa7e8ba32f32623b31a1c75f6c3db400a0c"
-  integrity sha512-AFkbPmXNd8XgCi/66YEHR2bVl3gtusXyDihTIVEPAuSB+7ulLmJePvz1unWPVKLHdbCTTIdKq2mpJ1B1e3lJXw==
+"@turbo/windows-64@2.11.10":
+  version "2.11.10"
+  resolved "https://registry.yarnpkg.com/@turbo/windows-64/-/windows-64-2.11.10.tgz#fb29a315a112afac9f01a4a1ea7601b28f140f31"
+  integrity sha512-UJOP3BkbreY3/JlMgJR6ZiimxYIBn+c+B4tnBIxD0E9c3Estmk+XoVNVBNBottZLNRXe3/ScgOU4+/k8tIWysg==

-"@turbo/windows-arm64@2.11.5":
-  version "2.11.5"
-  resolved "https://registry.yarnpkg.com/@turbo/windows-arm64/-/windows-arm64-2.11.5.tgz#18bd5a0ad30c4e094995786bd78916b6de6b5c1c"
-  integrity sha512-52ziXYP3snGOxjv19xA3WL1WDKv9Q6uDAa/7EKIR5j4hocMlYURkrOHbJ2ZZI+VfPU5MwKpcGeRfHxHJu7Y/Pw==
+"@turbo/windows-arm64@2.11.10":
+  version "2.11.10"
+  resolved "https://registry.yarnpkg.com/@turbo/windows-arm64/-/windows-arm64-2.11.10.tgz#bac3077b0a39643043ece360ff1f4f2af9272106"
+  integrity sha512-xOkEjF3ws/b/YNlc+bvJHMYBn+vL+QbEISZFVi0qS+ImmhA1X3/gmNmBrjjIG3dg6aeN+n6gQitzSkXQ286qJQ==

 "@types/esrecurse@^4.3.1":
  version "4.3.1"
@@ -247,110 +252,100 @@
  resolved "https://registry.yarnpkg.com/@types/json5/-/json5-0.0.29.tgz#ee28707ae94e11d2b827bcbe5270bcea7f3e71ee"
  integrity sha512-dRLjCWHYg4oaA77cxO64oO+7JwCwnIzkZPdrrC71jQmQtlhM556pwKo5bUzqvZndkVbeFLIIi+9TC40JNF5hNQ==

-"@typescript-eslint/eslint-plugin@^8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.70.1.tgz#d404bac4cb04e4dcd20086e46e13c952bd0771e0"
-  integrity sha512-nDNrUQ/4ruSNYbu749TRY7cfrzPtoLHEXSNBI8aaNY32LlZCajixqRf3FqcKC4p5Cam4VOHYx/t+i5+nKXvrqA==
+"@typescript-eslint/eslint-plugin@^8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.72.1.tgz#95e29de63ce7ed793eb1c6efd9f8b802ce808262"
+  integrity sha512-5CokTWXpmbylfFabsbvHC0CAw3XLaGnoa+nFJX5FR592h/LoZsENUE6p/rg5xvkKrFEXz6pYmgI29AgXc2N3BQ==
  dependencies:
    "@eslint-community/regexpp" "^4.12.2"
-    "@typescript-eslint/scope-manager" "8.70.1"
-    "@typescript-eslint/type-utils" "8.70.1"
-    "@typescript-eslint/utils" "8.70.1"
-    "@typescript-eslint/visitor-keys" "8.70.1"
+    "@typescript-eslint/scope-manager" "8.72.1"
+    "@typescript-eslint/type-utils" "8.72.1"
+    "@typescript-eslint/utils" "8.72.1"
+    "@typescript-eslint/visitor-keys" "8.72.1"
    ignore "^7.0.5"
    natural-compare "^1.4.0"
    ts-api-utils "^2.5.0"

-"@typescript-eslint/parser@^8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-8.70.1.tgz#6c99b7b954efc05dae179001c8b477d1a8948dcf"
-  integrity sha512-nO974WLllwhSFWQXnMLj6nDGa8f0khKEz1JzpPJ1u7Vm/4X1X6ZHajpoknU4bb41vJyMB0HHVyS2GqdhWfIXZw==
+"@typescript-eslint/parser@^8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-8.72.1.tgz#7370b68dadc3819b9aac68ea340bd8b43ee62379"
+  integrity sha512-ZGwZP4OCfyA0AQTpEAMWz+rtX01DRhQWW5hB0ucKDEIX5U7jdmPSaMx94rQfaPAQzIYz2BimOgKOJtjfpRFQ9g==
  dependencies:
-    "@typescript-eslint/scope-manager" "8.70.1"
-    "@typescript-eslint/types" "8.70.1"
-    "@typescript-eslint/typescript-estree" "8.70.1"
-    "@typescript-eslint/visitor-keys" "8.70.1"
+    "@typescript-eslint/scope-manager" "8.72.1"
+    "@typescript-eslint/types" "8.72.1"
+    "@typescript-eslint/typescript-estree" "8.72.1"
+    "@typescript-eslint/visitor-keys" "8.72.1"
    debug "^4.4.3"

-"@typescript-eslint/project-service@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/project-service/-/project-service-8.70.1.tgz#d5635594cc8a573f0e15a772b1704e93a00134c1"
-  integrity sha512-62xOgboPfwc3/IgPSX/W6oQR3ZbF04194FPGUGH8HL8iLFHbt/456/8Ph1wLNUgVF+s94FlHoipBsz+v7+LMnA==
+"@typescript-eslint/project-service@8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/project-service/-/project-service-8.72.1.tgz#1d09902a9c23f6cfab779e5acc78a45abf540add"
+  integrity sha512-fAuVMkwdO/huI8nyo/WKnNKf6Gag93S56Rh3Ts5mGcavwSdaN8tRg1gCeIGX8PF+nzp1BjGfO4gHhGzW1J6jTg==
  dependencies:
-    "@typescript-eslint/tsconfig-utils" "^8.70.1"
-    "@typescript-eslint/types" "^8.70.1"
+    "@typescript-eslint/tsconfig-utils" "^8.72.1"
+    "@typescript-eslint/types" "^8.72.1"
    debug "^4.4.3"

-"@typescript-eslint/scope-manager@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-8.70.1.tgz#0feeae4da2d279b960cdbfe5e0a02fbf1195e93f"
-  integrity sha512-Pa0EeSeAusQc1WbjQMac+YfenewYTBu0KjgYvkUKwhXaHUKbFog23Dm/rp0DX/6tyYOQ3Xl1a+3EcFNZynGHCw==
+"@typescript-eslint/scope-manager@8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-8.72.1.tgz#a0fb4dfe5aa2b0149b7a2d1fd00d947992b13067"
+  integrity sha512-lC/t6eMCZZQAAKZEYGL6RDVSuFehpdmMT6h+nJIjIa6oylN/PwDgDVtEIbB7O9xFfZYtZAYLoLlDNWKJhtF+uQ==
  dependencies:
-    "@typescript-eslint/types" "8.70.1"
-    "@typescript-eslint/visitor-keys" "8.70.1"
+    "@typescript-eslint/types" "8.72.1"
+    "@typescript-eslint/visitor-keys" "8.72.1"

-"@typescript-eslint/tsconfig-utils@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.70.1.tgz#e9353a6e5f3498a29b40946ca3e11f6166fef09e"
-  integrity sha512-jumze1fPI+sDOaM2TWGQdn39PDxTr7TZGeuyLkAbNyx2vtMT3uRnVKChN0hfht5V2TugphJzF6bYXvBcE09qqg==
+"@typescript-eslint/tsconfig-utils@8.72.1", "@typescript-eslint/tsconfig-utils@^8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.72.1.tgz#07394c85095ee38455e76bc221ba23650af73e44"
+  integrity sha512-e4D5R5vpeAEPBxT2BAzsFQL3sbwyeeeo5+aczgNSRK1V734jE7pTqaGFU+fXapWEQwnZbpFaTn32+Z8DwS6OTg==

-"@typescript-eslint/tsconfig-utils@^8.70.1":
-  version "8.71.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.71.0.tgz#83a69c9a514af8f5ff099cc6c0d609c273e8f039"
-  integrity sha512-Z1UlWHADEK2Mlb9NpWfDeSjqoZ5EyrOv4R3eQpbkzqn/EwaIdOpXXupEA1+0ZIOSJSZZDBHG0BrQyN8zUG6Pwg==
-
-"@typescript-eslint/type-utils@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/type-utils/-/type-utils-8.70.1.tgz#6ea36f2c7dc0776c1c8e1c380b4896f00bc4c27f"
-  integrity sha512-7zKTnyvaVWqzLZHPFQtX1hVHqgkMC+WebPWakNCSyrQVbIP1AM0L0TlBZtACldIRb6PptI8Odk+jyZ5kP3B1VA==
+"@typescript-eslint/type-utils@8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/type-utils/-/type-utils-8.72.1.tgz#f1f592f63bd9726de21191aae3ccf64a813914b8"
+  integrity sha512-iY2wlmyrXJmx4yxUGP3aYCFF3cA/6ShddOKmLU2dx7LnEykbAM8WThlxZEfd1NddqceF6eJmZUayxx9oKIYNlg==
  dependencies:
-    "@typescript-eslint/types" "8.70.1"
-    "@typescript-eslint/typescript-estree" "8.70.1"
-    "@typescript-eslint/utils" "8.70.1"
+    "@typescript-eslint/types" "8.72.1"
+    "@typescript-eslint/typescript-estree" "8.72.1"
+    "@typescript-eslint/utils" "8.72.1"
    debug "^4.4.3"
    ts-api-utils "^2.5.0"

-"@typescript-eslint/types@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-8.70.1.tgz#2022b9d07d057174eba25b9bbd289641d262a196"
-  integrity sha512-Dm1ypdhhrGCTyyehxElhgJ6kgk8MVCv5qXdoOVqPr1uqk42jX8KjrZqhROvdShczA8qrDoYiOWn1ykWlx2k81Q==
+"@typescript-eslint/types@8.72.1", "@typescript-eslint/types@^8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-8.72.1.tgz#067d8f738c294611e33a1425ae43ac9b9c2f24e3"
+  integrity sha512-LmE5IhQet1BWOWEXqBrVtBPsMAOQ6Nzk35d+WLh3mk4EUF33sqlfxjio1MdYeSvKSG5skactKKuixBIKXhL4Rw==

-"@typescript-eslint/types@^8.70.1":
-  version "8.71.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-8.71.0.tgz#a230a121e71665060afe27d1f1ad110371f9451e"
-  integrity sha512-cJ4OoxPGWvFnBTnSZyaU+qJzGTqPTGJY+gDchj6cRyLRdmIdt4rcsE4twj+zPfrNiWuVi38wijHzShL++Z9atQ==
-
-"@typescript-eslint/typescript-estree@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-8.70.1.tgz#ced48fee6f7043835d2edfed9786ae74813a3c99"
-  integrity sha512-TU8PwyGN0PQJUcE96mw8eCQ44SmxGdQlJmlWakHaHQ15eIuuvye5yNtmh/i6oS88jzXVQB71xdNkbkB/fMwL0g==
+"@typescript-eslint/typescript-estree@8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-8.72.1.tgz#e93b9cc3a56bf12f5fed857bb8f4963cce7924ee"
+  integrity sha512-DAlUoUV93hIvrtIQLwCbmZQYVZwOMhiHJrOVUUIWicFZaIYjTRqlY3I/NZevfkLmSqkNHRu2qYDcq9lrn16oOQ==
  dependencies:
-    "@typescript-eslint/project-service" "8.70.1"
-    "@typescript-eslint/tsconfig-utils" "8.70.1"
-    "@typescript-eslint/types" "8.70.1"
-    "@typescript-eslint/visitor-keys" "8.70.1"
+    "@typescript-eslint/project-service" "8.72.1"
+    "@typescript-eslint/tsconfig-utils" "8.72.1"
+    "@typescript-eslint/types" "8.72.1"
+    "@typescript-eslint/visitor-keys" "8.72.1"
    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@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/utils/-/utils-8.70.1.tgz#6a97887cee702df513692f5cdc7f79baeef48e02"
-  integrity sha512-Esgul8MsnKnRLdYU2Eb2cRV9bS5HJYtKj1ByJnOzzG2M58DGdSUQ1jUuILxipqcpB2h9WLrbD5GijIWUjX/Tqw==
+"@typescript-eslint/utils@8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/utils/-/utils-8.72.1.tgz#f210c1bf4a25aa1306df80c702ed30bbbc9b4d3d"
+  integrity sha512-5v5liypurJBFHCBNqh/RjsymAD+VWcE0djuGY/BUqp5fC3Qn+luWDEksjuTtWjPn6i5zQlUtkZCRG/CYG0yCkA==
  dependencies:
    "@eslint-community/eslint-utils" "^4.9.1"
-    "@typescript-eslint/scope-manager" "8.70.1"
-    "@typescript-eslint/types" "8.70.1"
-    "@typescript-eslint/typescript-estree" "8.70.1"
+    "@typescript-eslint/scope-manager" "8.72.1"
+    "@typescript-eslint/types" "8.72.1"
+    "@typescript-eslint/typescript-estree" "8.72.1"

-"@typescript-eslint/visitor-keys@8.70.1":
-  version "8.70.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-8.70.1.tgz#b4cde0ed16982bd963a6310fcae554f59fd14124"
-  integrity sha512-Vwj9lUIW5Xq3wQ9w6gv3R86g1hMK8f2zNOdGTAgeXUMMXFK78G9ruCjjqutHMNJc0+CH7LYRnHeUB9IT8wFmcw==
+"@typescript-eslint/visitor-keys@8.72.1":
+  version "8.72.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-8.72.1.tgz#c7aec9883b44ef795f1b8200df81d9d44d355de7"
+  integrity sha512-SB8xqipSzZHUePCCLNeYxqnxq83X61/qzNhjQGbTfjxGZIeOEP7tBgWYX05Tcd6CgE02WdTJnh5b8kMZJ/+bnQ==
  dependencies:
-    "@typescript-eslint/types" "8.70.1"
+    "@typescript-eslint/types" "8.72.1"
    eslint-visitor-keys "^5.0.0"

 "@typescript/typescript-aix-ppc64@7.0.2":
@@ -890,13 +885,13 @@ 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@^5.5.6:
-  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==
+eslint-plugin-prettier@^5.5.7:
+  version "5.5.7"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-prettier/-/eslint-plugin-prettier-5.5.7.tgz#ebef3acc2d664333b1356b717780198abc635398"
+  integrity sha512-WjHyn3GrFd+ZR0rzsLiM4zJZ35PZMOE0SUIxzGmnWNG0126yNfJKJzObmmkYDwHJfGlkz3PSlzyG9ez/LJntwg==
  dependencies:
    prettier-linter-helpers "^1.0.1"
-    synckit "^0.11.13"
+    synckit "^0.12.3"

 eslint-scope@^9.1.2:
  version "9.1.2"
@@ -923,10 +918,10 @@ 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@^10.11.0:
-  version "10.11.0"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-10.11.0.tgz#304d1591b7c6a327e3f64b4f550f99fda160ae20"
-  integrity sha512-P7a6UEEqb9G95MYAtqkmsTbVXIYyzIfl6NGOIJk162PaahFxFyeGcrlXYFSiagECg4sEm8IseJdZBKR3rx6MsQ==
+eslint@^10.13.0:
+  version "10.13.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-10.13.0.tgz#a8a4742648c0fa9131f429b509de5407682d4864"
+  integrity sha512-UohDjD4zSzEwhf58M3O7vc/ycc8O1I7dNlhtD0WxE8Px8EHNJKtUwzBqrzeGhisRuv2ag4sAYswszCJRgKXYUg==
  dependencies:
    "@eslint-community/eslint-utils" "^4.8.0"
    "@eslint-community/regexpp" "^4.12.2"
@@ -1476,10 +1471,10 @@ keyv@^5.6.0:
  dependencies:
    "@keyv/serialize" "^1.1.1"

-"langsmith@>=0.5.0 <1.0.0":
-  version "0.7.1"
-  resolved "https://registry.yarnpkg.com/langsmith/-/langsmith-0.7.1.tgz#d721ad2e5211f9a5373e8a84eb4fed36b5621971"
-  integrity sha512-Wjk90UjNoY5cBHMlNAC/eZx5clI8jnjBOBW8uJu8+MWBtx0QesNjsUiLtjI+I3UnrpxFFpDqGXcnhBjH654Mqg==
+"langsmith@>=0.11.0 <1.0.0":
+  version "0.11.6"
+  resolved "https://registry.yarnpkg.com/langsmith/-/langsmith-0.11.6.tgz#cdc0f89a14632f8b172deea5daa1ee625f7442c3"
+  integrity sha512-5hfJM5DEZpXFxUS3U9nY2CMyBRmFnhkJj7znUODJ8vsr/Jx38tGJl4GIhV484xAY7yQFWrFOTDr33PB95kHUKg==
  dependencies:
    p-queue "6.6.2"

@@ -1707,10 +1702,10 @@ prettier-linter-helpers@^1.0.1:
  dependencies:
    fast-diff "^1.1.2"

-prettier@^3.9.9:
-  version "3.9.9"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.9.9.tgz#09b826918c91cd4cbc80e0cbd1d2a922ff04f233"
-  integrity sha512-Z/CJHIkdujO/OtN7nXUii0Rf3VT5SRuhjBA82Xvu2XhBUgX3nhP67T0LHceBdQLex7OOFGTox+Q5Yg8Jk2Qivg==
+prettier@^3.9.10:
+  version "3.9.10"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.9.10.tgz#ac378e432f1a7381518f2e080816bbaefa38d585"
+  integrity sha512-skGHTH1Yb9QvaTC4hWnRTzEYtCpApF0UMBPz+t/0ZPzP8ihefo/btKd+QA7pUE0fEwA1SbS/NmhyEcstdXOIdA==

 punycode@^2.1.0:
  version "2.3.1"
@@ -1940,11 +1935,12 @@ 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@^0.11.13:
-  version "0.11.13"
-  resolved "https://registry.yarnpkg.com/synckit/-/synckit-0.11.13.tgz#062a5ea57d81befc35892f8254de5c567e97c80a"
-  integrity sha512-eNRKgb3z66Yp3D2CixVujOUvXLFUTij/zVnV8KRyvFdQwpz7I5DS8UfRkTeLzb64u+dkzDSdelE24izu+zSSUg==
+synckit@^0.12.3:
+  version "0.12.3"
+  resolved "https://registry.yarnpkg.com/synckit/-/synckit-0.12.3.tgz#6e30a3441d095ed04c311077350ce205465512d6"
+  integrity sha512-U+/AXT6LWsxnj2vz9HeUuPWBNgdWxjyIEjEPdbJARC9txmgPzo2VEdqnFo4hHaNyMPtycyVJrSaQYeQv/PoyyA==
  dependencies:
+    "@dual-bundle/import-meta-resolve" "^4.2.1"
    "@pkgr/core" "^0.3.6"

 tinyglobby@^0.2.15:
@@ -1970,17 +1966,17 @@ tsconfig-paths@^3.15.0:
    minimist "^1.2.6"
    strip-bom "^3.0.0"

-turbo@^2.11.5:
-  version "2.11.5"
-  resolved "https://registry.yarnpkg.com/turbo/-/turbo-2.11.5.tgz#e7223abd0555b978d3efe1b00ea9a98f43afb7ab"
-  integrity sha512-qLXheqz3TUvJpHIV6MUBwkNkvwKxMVG/QsimyiKT9DfNWPHJ294G/i5nDaH+fbHJt3UH7orubNNxAqYkbUNGAQ==
+turbo@^2.11.10:
+  version "2.11.10"
+  resolved "https://registry.yarnpkg.com/turbo/-/turbo-2.11.10.tgz#8b1d40debab2b871ff9e908d6f3018aeda04879d"
+  integrity sha512-3GJYwig8ygEI89oaOZdduJX8/aw6O9eRPYHoIt6T3FZl9hkKjiyIspufJoVgqXihPoJu8M5CSV0DlZvzfohBCw==
  optionalDependencies:
-    "@turbo/darwin-64" "2.11.5"
-    "@turbo/darwin-arm64" "2.11.5"
-    "@turbo/linux-64" "2.11.5"
-    "@turbo/linux-arm64" "2.11.5"
-    "@turbo/windows-64" "2.11.5"
-    "@turbo/windows-arm64" "2.11.5"
+    "@turbo/darwin-64" "2.11.10"
+    "@turbo/darwin-arm64" "2.11.10"
+    "@turbo/linux-64" "2.11.10"
+    "@turbo/linux-arm64" "2.11.10"
+    "@turbo/windows-64" "2.11.10"
+    "@turbo/windows-arm64" "2.11.10"

 type-check@^0.4.0, type-check@~0.4.0:
  version "0.4.0"
@@ -2148,6 +2144,6 @@ yocto-queue@^0.1.0:
  integrity sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==

 "zod@^3.25.76 || ^4":
-  version "4.3.6"
-  resolved "https://registry.yarnpkg.com/zod/-/zod-4.3.6.tgz#89c56e0aa7d2b05107d894412227087885ab112a"
-  integrity sha512-rftlrkhHZOcjDwkGlnUtZZkvaPHCsDATp4pGpuOOMDaTdDDXF91wuVDJoWoPsKX/3YPQ5fHuF3STjcYyKr+Qhg==
+  version "4.6.7"
+  resolved "https://registry.yarnpkg.com/zod/-/zod-4.6.7.tgz#e806cf64a7f4e37635ce9f2f52c04c3766f75e5b"
+  integrity sha512-g8W2D2kU6a8untc053fX1uVBKzM7yqAxW/3zwk83+6RyF2+SKOuV+c0wBDhUwzV1PaGapmZH+rmcUzPf+3CGwg==
@@ -1 +1 @@
-__version__ = "0.4.38"
+__version__ = "0.4.40"
@@ -12,7 +12,7 @@ from collections.abc import Callable, Mapping, Sequence
 from contextlib import contextmanager
 from dataclasses import asdict, dataclass, field
 from datetime import datetime, timezone
-from typing import Protocol, TypeVar
+from typing import Generic, Protocol, TypeVar

 import click
 import click.exceptions
@@ -26,7 +26,6 @@ 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 CommandRunner, Runner, subp_exec
 from langgraph_cli.host_backend import (
-    MAX_PAGE_SIZE,
    ControlPlaneEndpoints,
    HostBackendClient,
    HostBackendError,
@@ -183,12 +182,15 @@ class Listener:
        )
        return cls(
            identifier,
-            str(resource.get("compute_id", "")),
+            str(resource.get("compute_id") or ""),
            tuple(str(namespace) for namespace in namespaces)
            if isinstance(namespaces, list)
            else (),
        )

+    def cells(self) -> tuple[str | None, ...]:
+        return (self.id, self.compute_id, ", ".join(self.namespaces))
+

@dataclass(frozen=True, slots=True)
 class Unplaced:
@@ -276,8 +278,6 @@ def _describe_listeners(listeners: Sequence[Listener]) -> str:
    ]
    if len(listeners) > len(shown):
        lines.append(f"  ... and {len(listeners) - len(shown)} more")
-    if len(listeners) == MAX_PAGE_SIZE:
-        lines.append(f"  (only the first {MAX_PAGE_SIZE} listeners were read)")
    return "\n".join(lines)


@@ -499,16 +499,9 @@ def _source_of(resource: object) -> str | None:
 def find_deployment_by_name(
    client: HostBackendClient, name: str
 ) -> ExistingDeployment | None:
-    listed = client.list_deployments(name=name, name_contains=name, limit=MAX_PAGE_SIZE)
-    for resource in listed:
+    for resource in client.list_deployments(name=name, name_contains=name):
        if resource.get("name") == name and resource.get("id"):
            return ExistingDeployment(str(resource["id"]), _source_of(resource))
-    if len(listed) >= MAX_PAGE_SIZE:
-        raise click.ClickException(
-            "This workspace has more deployments than the CLI can search, so it "
-            f"cannot tell whether '{name}' already exists. Pass --deployment-id to "
-            "update an existing deployment."
-        )
    return None


@@ -583,103 +576,96 @@ def _validate_prebuilt_image(
    _get_emitter().info(f"Image is available for {_DEPLOYMENT_PLATFORM}")


-def _extract_deployment_url(deployment: dict[str, object]) -> str:
-    source_config = deployment.get("source_config")
-    if isinstance(source_config, dict):
-        custom_url = source_config.get("custom_url")
-        if isinstance(custom_url, str) and custom_url:
-            return custom_url
-    return "-"
+Resource = Mapping[str, object]
+RowT = TypeVar("RowT")


-def format_deployments_table(deployments: Sequence[dict[str, object]]) -> str:
-    headers = ("Deployment ID", "Deployment Name", "Deployment URL")
-    rows = [
-        (
-            str(deployment.get("id", "-") or "-"),
-            str(deployment.get("name", "-") or "-"),
-            _extract_deployment_url(deployment),
-        )
-        for deployment in deployments
-    ]
-    widths = [
-        max(len(headers[index]), *(len(row[index]) for row in rows))
-        for index in range(len(headers))
-    ]
+@dataclass(frozen=True, slots=True)
+class Table(Generic[RowT]):
+    headers: tuple[str, ...]
+    cells: Callable[[RowT], tuple[str | None, ...]]

-    def format_row(row: Sequence[str]) -> str:
-        return "  ".join(value.ljust(widths[index]) for index, value in enumerate(row))
-
-    lines = [format_row(headers), format_row(tuple("-" * width for width in widths))]
-    lines.extend(format_row(row) for row in rows)
-    return "\n".join(lines)
-
-
-def _extract_listener_namespaces(listener: dict[str, object]) -> str:
-    compute_config = listener.get("compute_config")
-    namespaces = (
-        compute_config.get("k8s_namespaces")
-        if isinstance(compute_config, dict)
-        else None
-    )
-    if isinstance(namespaces, list) and namespaces:
-        return ", ".join(str(namespace) for namespace in namespaces)
-    return "-"
-
-
-def format_listeners_table(listeners: Sequence[dict[str, object]]) -> str:
-    headers = ("Listener ID", "Compute ID", "Namespaces")
-    rows = [
-        (
-            str(listener.get("id", "-") or "-"),
-            str(listener.get("compute_id", "-") or "-"),
-            _extract_listener_namespaces(listener),
-        )
-        for listener in listeners
-    ]
-    widths = [
-        max(len(headers[index]), *(len(row[index]) for row in rows))
-        for index in range(len(headers))
-    ]
-
-    def format_row(row: Sequence[str]) -> str:
-        return "  ".join(value.ljust(widths[index]) for index, value in enumerate(row))
-
-    lines = [format_row(headers), format_row(tuple("-" * width for width in widths))]
-    lines.extend(format_row(row) for row in rows)
-    return "\n".join(lines)
-
-
-def format_revisions_table(revisions: Sequence[dict[str, object]]) -> str:
-    headers = ("Revision ID", "Status", "Created At")
-    latest_deployed_seen = False
-    rows = []
-    for revision in revisions:
-        status = str(revision.get("status", "-") or "-")
-        if status == "DEPLOYED":
-            if latest_deployed_seen:
-                status = "REPLACED"
-            else:
-                latest_deployed_seen = True
-        rows.append(
-            (
-                str(revision.get("id", "-") or "-"),
-                status,
-                str(revision.get("created_at", "-") or "-"),
+    def render(self, rows: Sequence[RowT]) -> str:
+        grid = [
+            self.headers,
+            *(tuple(cell or "-" for cell in self.cells(row)) for row in rows),
+        ]
+        widths = [max(map(len, column)) for column in zip(*grid, strict=True)]
+        rule = tuple("-" * width for width in widths)
+        return "\n".join(
+            "  ".join(
+                cell.ljust(width) for cell, width in zip(line, widths, strict=True)
            )
+            for line in (grid[0], rule, *grid[1:])
        )

-    widths = [
-        max(len(headers[index]), *(len(row[index]) for row in rows))
-        for index in range(len(headers))
+
+def _text(resource: Resource, key: str) -> str | None:
+    value = resource.get(key)
+    return str(value) if value else None
+
+
+def _deployment_url(deployment: Resource) -> str | None:
+    source_config = deployment.get("source_config")
+    custom_url = (
+        source_config.get("custom_url") if isinstance(source_config, Mapping) else None
+    )
+    return custom_url if isinstance(custom_url, str) and custom_url else None
+
+
+def _with_replaced_status(revisions: Sequence[Resource]) -> list[Resource]:
+    live_index = next(
+        (
+            index
+            for index, revision in enumerate(revisions)
+            if revision.get("status") == "DEPLOYED"
+        ),
+        None,
+    )
+    return [
+        {**revision, "status": "REPLACED"}
+        if revision.get("status") == "DEPLOYED" and index != live_index
+        else revision
+        for index, revision in enumerate(revisions)
    ]

-    def format_row(row: Sequence[str]) -> str:
-        return "  ".join(value.ljust(widths[index]) for index, value in enumerate(row))

-    lines = [format_row(headers), format_row(tuple("-" * width for width in widths))]
-    lines.extend(format_row(row) for row in rows)
-    return "\n".join(lines)
+@dataclass(frozen=True, slots=True)
+class DeploymentRow:
+    id: str
+    name: str | None
+    url: str | None
+
+    @classmethod
+    def from_resource(cls, deployment: Resource) -> "DeploymentRow":
+        identifier = _text(deployment, "id")
+        if identifier is None:
+            raise HostBackendError(
+                "The control plane returned a deployment without an id."
+            )
+        return cls(identifier, _text(deployment, "name"), _deployment_url(deployment))
+
+    def cells(self) -> tuple[str | None, ...]:
+        return (self.id, self.name, self.url)
+
+    def as_json(self) -> dict[str, str | None]:
+        return {"id": self.id, "name": self.name}
+
+
+DEPLOYMENTS_TABLE = Table(
+    ("Deployment ID", "Deployment Name", "Deployment URL"), DeploymentRow.cells
+)
+
+LISTENERS_TABLE = Table(("Listener ID", "Compute ID", "Namespaces"), Listener.cells)
+
+REVISIONS_TABLE = Table(
+    ("Revision ID", "Status", "Created At"),
+    lambda revision: (
+        _text(revision, "id"),
+        _text(revision, "status"),
+        _text(revision, "created_at"),
+    ),
+)


 def format_timestamp(ts) -> str:
@@ -841,7 +827,6 @@ def _find_deployment(
            lambda c: c.list_deployments(
                agent_id=selector.agent_id,
                agent_environment=selector.environment,
-                limit=MAX_PAGE_SIZE,
            ),
        )
        if len(existing) > 1:
@@ -1007,20 +992,15 @@ def _print_deployment_result(
    dashboard_label: str,
    status_url: str | None = None,
 ) -> None:
-    """Print final deployment status and raise on failure."""
    em = _get_emitter()
-    dep_info = client.get_deployment(deployment_id)
-    custom_url = None
-    if isinstance(dep_info, dict):
-        sc = dep_info.get("source_config")
-        if isinstance(sc, dict):
-            custom_url = sc.get("custom_url")
+    deployment = client.get_deployment(deployment_id)
+    url = _deployment_url(deployment) if isinstance(deployment, Mapping) else None

    if last_status == "DEPLOYED":
        em.result(
            "succeeded",
            deployment_id=deployment_id,
-            url=custom_url,
+            url=url,
            status_url=status_url,
        )
    elif last_status in ("BUILD_FAILED", "DEPLOY_FAILED", "CREATE_FAILED"):
@@ -1081,6 +1061,8 @@ def _docker_config_for_token(registry_host: str, token: str, username: str):

 _UPLOAD_TIMEOUT_SECONDS = 300
 _BYTES_PER_MIB = 1_048_576
+# Byte range Cloud Storage signs into upload URLs, up to the 200 MB archive limit.
+_GCS_SIZE_RANGE = f"0,{200 * _BYTES_PER_MIB}"


 class _ProgressReader:
@@ -1106,12 +1088,24 @@ class _ProgressReader:
        return self._file_size


-def _upload_to_gcs(signed_url: str, file_path: str, file_size: int) -> None:
-    """Upload tarball to GCS via signed PUT URL with progress display."""
+def _upload_source_tarball(
+    signed_url: str,
+    file_path: str,
+    file_size: int,
+    upload_headers: dict[str, str] | None,
+) -> None:
+    """Upload tarball via signed PUT URL with progress display."""
    import urllib.error
    import urllib.request

    em = _get_emitter()
+    # Control planes that return no `upload_headers` sign for the Cloud Storage
+    # size range. Content-Type is a fallback: without one, urllib sends a form
+    # content type, which breaks signatures that cover it.
+    headers = {
+        "Content-Type": "application/gzip",
+        **(upload_headers or {"X-Goog-Content-Length-Range": _GCS_SIZE_RANGE}),
+    }

    with open(file_path, "rb") as f:
        reader = _ProgressReader(f, file_size, em)
@@ -1119,11 +1113,7 @@ def _upload_to_gcs(signed_url: str, file_path: str, file_size: int) -> None:
            signed_url,
            data=reader,
            method="PUT",
-            headers={
-                "Content-Type": "application/gzip",
-                "Content-Length": str(file_size),
-                "X-Goog-Content-Length-Range": "0,209715200",
-            },
+            headers={**headers, "Content-Length": str(file_size)},
        )
        try:
            urllib.request.urlopen(req, timeout=_UPLOAD_TIMEOUT_SECONDS)
@@ -1443,7 +1433,9 @@ def _run_remote_build(
        step += 1

        _log_deploy_step(step, "Uploading source")
-        _upload_to_gcs(signed_url, archive_path, file_size)
+        _upload_source_tarball(
+            signed_url, archive_path, file_size, upload_data.get("upload_headers")
+        )
    step += 1

    _log_deploy_step(step, "Triggering remote build")
@@ -2439,7 +2431,6 @@ def _deploy_cmd(
    validate_deploy_commands(install_command, build_command)
    agent = None
    if agent_id is not None or environment is not None:
-        em.note("Note: --agent-id and --agent-environment flags are in private beta")
        if not agent_id or not agent_id.strip() or not environment:
            raise click.UsageError(
                "--agent-id and --agent-environment are required together."
@@ -2594,6 +2585,13 @@ def _deploy_cmd(
    default="",
    help="Only show deployments whose names contain this value.",
 )
+@click.option(
+    "--json",
+    "json_output",
+    is_flag=True,
+    default=False,
+    help="Print the deployments as a JSON array of {id, name} instead of a table.",
+)
@deploy.command("list", help="[Beta] List LangSmith Deployments.")
 def deploy_list(
    api_key: str | None,
@@ -2601,11 +2599,13 @@ def deploy_list(
    name_contains: str,
    agent_id: str | None,
    environment: str | None,
+    json_output: bool,
 ) -> None:
    if agent_id is not None or environment is not None:
        click.secho(
            "Note: --agent-id and --agent-environment flags are in private beta",
            fg="yellow",
+            err=True,
        )
    if agent_id is not None and not agent_id.strip():
        raise click.UsageError("--agent-id must not be empty.")
@@ -2614,15 +2614,19 @@ def deploy_list(
        filters["agent_id"] = agent_id
    if environment is not None:
        filters["agent_environment"] = environment
-    client = _create_host_backend_client(host_url, api_key)
-    deployments = _call_host_backend_with_optional_tenant(
+    client = _create_host_backend_client(host_url, api_key, no_input=json_output)
+    resources = _call_host_backend_with_optional_tenant(
        client,
        lambda c: c.list_deployments(name_contains=name_contains, **filters),
+        no_input=json_output,
    )
-    if not deployments:
+    deployments = [DeploymentRow.from_resource(resource) for resource in resources]
+    if json_output:
+        click.echo(json_mod.dumps([deployment.as_json() for deployment in deployments]))
+    elif not deployments:
        click.echo("No deployments found.")
-        return
-    click.echo(format_deployments_table(deployments))
+    else:
+        click.echo(DEPLOYMENTS_TABLE.render(deployments))


 # ---------------------------------------------------------------------------
@@ -2665,11 +2669,14 @@ def deploy_listeners_list(
    )
    if json_output:
        click.echo(json_mod.dumps(listeners))
-        return
-    if not listeners:
+    elif not listeners:
        click.echo("No listeners found for this workspace.")
-        return
-    click.echo(format_listeners_table(listeners))
+    else:
+        click.echo(
+            LISTENERS_TABLE.render(
+                [Listener.from_resource(listener) for listener in listeners]
+            )
+        )


 # ---------------------------------------------------------------------------
@@ -2712,7 +2719,7 @@ def deploy_revisions_list(
    if not revisions:
        click.echo(f"No revisions found for deployment {deployment_id}.")
        return
-    click.echo(format_revisions_table(revisions))
+    click.echo(REVISIONS_TABLE.render(_with_replaced_status(revisions)))


 # ---------------------------------------------------------------------------
@@ -2,6 +2,7 @@

 from __future__ import annotations

+from collections.abc import Mapping
 from dataclasses import dataclass
 from typing import Any, Literal
 from urllib.parse import urlparse
@@ -220,27 +221,51 @@ class HostBackendClient:
        *,
        name: str | None = None,
        name_contains: str | None = None,
-        limit: int | None = None,
        agent_id: str | None = None,
        agent_environment: str | None = None,
-    ) -> list[dict[str, Any]]:
+    ) -> list[dict[str, object]]:
        given = (
            ("name", name),
            ("name_contains", name_contains),
-            ("limit", limit),
            ("agent_id", agent_id),
            ("agent_environment", agent_environment),
        )
-        params = {key: value for key, value in given if value is not None}
-        return _resources(self._request("GET", "/v2/deployments", params=params))
+        filters = {key: value for key, value in given if value is not None}
+        return self._every_page("/v2/deployments", filters)
+
+    def _every_page(
+        self, path: str, filters: Mapping[str, object]
+    ) -> list[dict[str, object]]:
+        resources: list[dict[str, object]] = []
+        seen_ids: set[object] = set()
+        while True:
+            page = _resources(
+                self._request(
+                    "GET",
+                    path,
+                    params={
+                        **filters,
+                        "limit": MAX_PAGE_SIZE,
+                        "offset": len(resources),
+                    },
+                )
+            )
+            page_ids = {resource.get("id") for resource in page}
+            if page_ids and page_ids <= seen_ids:
+                raise HostBackendError(
+                    f"GET {path} returned the same resources again: this control "
+                    "plane ignores 'offset', so the CLI cannot read past the first page."
+                )
+            seen_ids |= page_ids
+            resources.extend(page)
+            if len(page) < MAX_PAGE_SIZE:
+                return resources

    def get_listener(self, listener_id: str) -> dict[str, Any]:
        return self._request("GET", f"/v2/listeners/{listener_id}")

-    def list_listeners(self) -> list[dict[str, Any]]:
-        return _resources(
-            self._request("GET", "/v2/listeners", params={"limit": MAX_PAGE_SIZE})
-        )
+    def list_listeners(self) -> list[dict[str, object]]:
+        return self._every_page("/v2/listeners", {})

    def get_deployment(self, deployment_id: str) -> dict[str, Any]:
        return self._request("GET", f"/v2/deployments/{deployment_id}")
@@ -258,10 +283,13 @@ class HostBackendClient:
        )

    def request_upload_url(self, deployment_id: str) -> dict[str, Any]:
-        """Get a signed GCS URL for uploading the source tarball."""
+        """Get a signed URL for uploading the source tarball."""
+        # Tells the control plane this client sends the returned
+        # `upload_headers` with its upload, which some storage requires.
        return self._request(
            "POST",
            f"/v2/deployments/{deployment_id}/upload-url",
+            {"supports_upload_headers": True},
        )

    def update_deployment(
@@ -482,6 +482,177 @@ def test_deploy_list_command_no_results(monkeypatch) -> None:
    assert result.output.strip() == "No deployments found."


+def test_deploy_list_prints_an_aligned_table(monkeypatch) -> None:
+    class FakeClient:
+        def __init__(self, host_url: str, api_key: str, tenant_id: str | None = None):
+            pass
+
+        def list_deployments(self, name_contains: str = ""):
+            return [
+                {
+                    "id": "dep-123",
+                    "name": "alpha",
+                    "source_config": {"custom_url": "https://alpha.example.com"},
+                },
+                {"id": "dep-4567", "name": "beta-agent", "source_config": {}},
+            ]
+
+    monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
+
+    result = CliRunner().invoke(
+        cli,
+        [
+            "deploy",
+            "list",
+            "--api-key",
+            "test-key",
+            "--host-url",
+            "https://api.example.com",
+        ],
+    )
+
+    assert result.exit_code == 0, result.output
+    assert result.output.splitlines() == [
+        "Deployment ID  Deployment Name  Deployment URL           ",
+        "-------------  ---------------  -------------------------",
+        "dep-123        alpha            https://alpha.example.com",
+        "dep-4567       beta-agent       -                        ",
+    ]
+
+
+def _deploy_list_json(
+    monkeypatch, deployments: list[dict], *extra_args: str
+) -> click.testing.Result:
+    class FakeClient:
+        def __init__(self, host_url: str, api_key: str, tenant_id: str | None = None):
+            pass
+
+        def list_deployments(
+            self,
+            name_contains: str = "",
+            agent_id: str | None = None,
+            agent_environment: str | None = None,
+        ):
+            return deployments
+
+    monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
+    return CliRunner().invoke(
+        cli,
+        [
+            "deploy",
+            "list",
+            "--json",
+            "--api-key",
+            "test-key",
+            "--host-url",
+            "https://api.example.com",
+            *extra_args,
+        ],
+    )
+
+
+def test_deploy_list_command_json(monkeypatch) -> None:
+    result = _deploy_list_json(
+        monkeypatch,
+        [
+            {
+                "id": "dep-123",
+                "name": "alpha",
+                "source_config": {"custom_url": "https://alpha.example.com"},
+            },
+            {"id": "dep-456", "name": "beta", "source_config": {}},
+        ],
+    )
+
+    assert result.exit_code == 0, result.output
+    assert json.loads(result.stdout) == [
+        {"id": "dep-123", "name": "alpha"},
+        {"id": "dep-456", "name": "beta"},
+    ]
+
+
+def test_deploy_list_json_never_prints_deployment_secrets(monkeypatch) -> None:
+    result = _deploy_list_json(
+        monkeypatch,
+        [
+            {
+                "id": "dep-123",
+                "name": "alpha",
+                "source_config": {"custom_url": None},
+                "secrets": [{"name": "OPENAI_API_KEY", "value": "sk-plain-value"}],
+            }
+        ],
+    )
+
+    assert result.exit_code == 0, result.output
+    assert "sk-plain-value" not in result.output
+    assert json.loads(result.stdout) == [{"id": "dep-123", "name": "alpha"}]
+
+
+def test_deploy_list_command_json_no_results(monkeypatch) -> None:
+    result = _deploy_list_json(monkeypatch, [])
+
+    assert result.exit_code == 0, result.output
+    assert json.loads(result.stdout) == []
+
+
+def test_deploy_list_rejects_a_deployment_without_an_id(monkeypatch) -> None:
+    result = _deploy_list_json(monkeypatch, [{"name": "alpha"}])
+
+    assert result.exit_code != 0
+    assert "deployment without an id" in result.output
+
+
+def test_deploy_list_json_keeps_the_agent_note_off_stdout(monkeypatch) -> None:
+    result = _deploy_list_json(
+        monkeypatch,
+        [{"id": "dep-123", "name": "alpha"}],
+        "--agent-id",
+        "customer-support",
+        "--agent-environment",
+        "staging",
+    )
+
+    assert result.exit_code == 0, result.output
+    assert json.loads(result.stdout) == [{"id": "dep-123", "name": "alpha"}]
+    assert "private beta" in result.stderr
+
+
+def test_deploy_list_json_never_prompts_for_a_workspace(monkeypatch) -> None:
+    class FakeClient:
+        def __init__(self, host_url: str, api_key: str, tenant_id: str | None = None):
+            pass
+
+        def list_deployments(self, name_contains: str = ""):
+            raise HostBackendError("requires workspace specification", status_code=403)
+
+        def set_tenant(self, tenant_id: str) -> None:
+            raise AssertionError("must not retry with a prompted tenant with --json")
+
+    monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
+    prompt_calls = []
+    monkeypatch.setattr(
+        click, "prompt", lambda *a, **k: prompt_calls.append((a, k)) or "unreachable"
+    )
+
+    result = CliRunner().invoke(
+        cli,
+        [
+            "deploy",
+            "list",
+            "--json",
+            "--api-key",
+            "test-key",
+            "--host-url",
+            "https://api.example.com",
+        ],
+    )
+
+    assert prompt_calls == []
+    assert result.exit_code != 0
+    assert "LANGSMITH_TENANT_ID" in result.output
+
+
 def test_deploy_listeners_list_command(monkeypatch) -> None:
    runner = CliRunner()
    captured: dict[str, str] = {}
@@ -564,6 +735,84 @@ def test_deploy_listeners_list_command_no_results(monkeypatch) -> None:
    assert result.output.strip() == "No listeners found for this workspace."


+def test_deploy_listeners_list_prints_an_aligned_table(monkeypatch) -> None:
+    class FakeClient:
+        def __init__(self, host_url: str, api_key: str, tenant_id: str | None = None):
+            pass
+
+        def list_listeners(self):
+            return [
+                {
+                    "id": "listener-1",
+                    "compute_id": "prod-cluster",
+                    "compute_config": {"k8s_namespaces": ["agents"]},
+                },
+                {
+                    "id": "listener-22",
+                    "compute_id": "multi",
+                    "compute_config": {"k8s_namespaces": ["agents", "agents-staging"]},
+                },
+                {"id": "listener-3", "compute_id": "", "compute_config": {}},
+                {
+                    "id": "listener-4",
+                    "compute_id": None,
+                    "compute_config": {"k8s_namespaces": ["agents"]},
+                },
+            ]
+
+    monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
+
+    result = CliRunner().invoke(
+        cli,
+        [
+            "deploy",
+            "listeners",
+            "list",
+            "--api-key",
+            "test-key",
+            "--host-url",
+            "https://api.example.com",
+        ],
+    )
+
+    assert result.exit_code == 0, result.output
+    assert result.output.splitlines() == [
+        "Listener ID  Compute ID    Namespaces            ",
+        "-----------  ------------  ----------------------",
+        "listener-1   prod-cluster  agents                ",
+        "listener-22  multi         agents, agents-staging",
+        "listener-3   -             -                     ",
+        "listener-4   -             agents                ",
+    ]
+
+
+def test_deploy_listeners_list_rejects_a_listener_without_an_id(monkeypatch) -> None:
+    class FakeClient:
+        def __init__(self, host_url: str, api_key: str, tenant_id: str | None = None):
+            pass
+
+        def list_listeners(self):
+            return [{"compute_id": "prod-cluster"}]
+
+    monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
+
+    result = CliRunner().invoke(
+        cli,
+        [
+            "deploy",
+            "listeners",
+            "list",
+            "--api-key",
+            "test-key",
+            "--host-url",
+            "https://api.example.com",
+        ],
+    )
+
+    assert result.exit_code != 0
+    assert "listener without an id" in result.output
+
+
 def test_deploy_listeners_list_command_json(monkeypatch) -> None:
    runner = CliRunner()

@@ -766,6 +1015,54 @@ def test_deploy_revisions_list_command_no_results(monkeypatch) -> None:
    assert result.output.strip() == "No revisions found for deployment dep-123."


+def test_deploy_revisions_list_marks_older_deployed_revisions_as_replaced(
+    monkeypatch,
+) -> None:
+    class FakeClient:
+        def __init__(self, host_url: str, api_key: str, tenant_id: str | None = None):
+            pass
+
+        def list_revisions(self, deployment_id: str, limit: int = 1):
+            return [
+                {
+                    "id": "rev-3",
+                    "status": "DEPLOYING",
+                    "created_at": "2026-10-20T10:00:00Z",
+                },
+                {
+                    "id": "rev-2",
+                    "status": "DEPLOYED",
+                    "created_at": "2026-10-19T10:00:00Z",
+                },
+                {"id": "rev-1", "status": "DEPLOYED", "created_at": None},
+            ]
+
+    monkeypatch.setattr(deploy_module, "HostBackendClient", FakeClient)
+
+    result = CliRunner().invoke(
+        cli,
+        [
+            "deploy",
+            "revisions",
+            "list",
+            "--api-key",
+            "test-key",
+            "--host-url",
+            "https://api.example.com",
+            "dep-123",
+        ],
+    )
+
+    assert result.exit_code == 0, result.output
+    assert result.output.splitlines() == [
+        "Revision ID  Status     Created At          ",
+        "-----------  ---------  --------------------",
+        "rev-3        DEPLOYING  2026-10-20T10:00:00Z",
+        "rev-2        DEPLOYED   2026-10-19T10:00:00Z",
+        "rev-1        REPLACED   -                   ",
+    ]
+
+
 def test_deploy_revisions_list_command_with_explicit_limit(monkeypatch) -> None:
    runner = CliRunner()
    captured: dict[str, str] = {}
@@ -96,6 +96,7 @@ class ControlPlaneDouble:
    existing_deployments: list[dict] = field(default_factory=list)
    push_token_status: int = 200
    push_token_extra: dict = field(default_factory=dict)
+    upload_url_extra: dict = field(default_factory=dict)
    create_error: str | None = None
    listeners: list[dict] = field(default_factory=list)
    listeners_by_id: dict[str, dict] = field(default_factory=dict)
@@ -111,7 +112,11 @@ class ControlPlaneDouble:
    def _respond(self, request: httpx.Request) -> httpx.Response:
        method, path = request.method, request.url.path
        if (method, path) == ("GET", "/v2/listeners"):
-            return httpx.Response(200, json={"resources": self.listeners})
+            offset = int(request.url.params.get("offset", 0))
+            limit = int(request.url.params.get("limit", 20))
+            return httpx.Response(
+                200, json={"resources": self.listeners[offset : offset + limit]}
+            )
        if method == "GET" and path.startswith("/v2/listeners/"):
            listener_id = path.rsplit("/", 1)[-1]
            if not _looks_like_a_uuid(listener_id):
@@ -159,7 +164,12 @@ class ControlPlaneDouble:
            )
        if path.endswith("/upload-url"):
            return httpx.Response(
-                200, json={"upload_url": SIGNED_UPLOAD_URL, "object_path": OBJECT_PATH}
+                200,
+                json={
+                    "upload_url": SIGNED_UPLOAD_URL,
+                    "object_path": OBJECT_PATH,
+                    **self.upload_url_extra,
+                },
            )
        if method == "PATCH":
            return httpx.Response(200, json={"tenant_id": "tenant-1"})
@@ -276,7 +286,7 @@ class DeployProject:
    control_plane: ControlPlaneDouble
    docker: DockerDouble
    timeline: list[str]
-    uploads: list[tuple[str, str, int]]
+    uploads: list[tuple[str, str, int, dict[str, str] | None]]

    def run(self, *args: str, host_url: str = CONTROL_PLANE_URL) -> Result:
        return CliRunner().invoke(
@@ -313,16 +323,21 @@ def deploy_project(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> DeployPro
    timeline: list[str] = []
    control_plane = ControlPlaneDouble(timeline)
    docker = DockerDouble(timeline)
-    uploads: list[tuple[str, str, int]] = []
+    uploads: list[tuple[str, str, int, dict[str, str] | None]] = []

    @contextmanager
    def fake_create_archive(config_path: Path, config: dict) -> Iterator[tuple]:
        timeline.append("create_archive")
        yield ARCHIVE

-    def fake_upload(signed_url: str, file_path: str, file_size: int) -> None:
+    def fake_upload(
+        signed_url: str,
+        file_path: str,
+        file_size: int,
+        upload_headers: dict[str, str] | None,
+    ) -> None:
        timeline.append("upload_archive")
-        uploads.append((signed_url, file_path, file_size))
+        uploads.append((signed_url, file_path, file_size, upload_headers))

    monkeypatch.setattr(deploy_module, "_no_input", False)
    monkeypatch.setattr(deploy_module, "_emitter", None)
@@ -340,7 +355,7 @@ def deploy_project(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> DeployPro
    )
    monkeypatch.setattr(deploy_module.platform, "machine", lambda: "x86_64")
    monkeypatch.setattr(archive_module, "create_archive", fake_create_archive)
-    monkeypatch.setattr(deploy_module, "_upload_to_gcs", fake_upload)
+    monkeypatch.setattr(deploy_module, "_upload_source_tarball", fake_upload)
    return DeployProject(control_plane, docker, timeline, uploads)


@@ -699,6 +714,9 @@ def test_deployment_not_created_by_the_cli_gets_an_actionable_error(
 def test_remote_build_creates_an_internal_source_deployment_and_uploads_the_archive(
    deploy_project: DeployProject,
 ) -> None:
+    upload_headers = {"Content-Type": "application/gzip", "x-ms-blob-type": "BlockBlob"}
+    deploy_project.control_plane.upload_url_extra = {"upload_headers": upload_headers}
+
    result = deploy_project.run("--remote", "--install-command", "yarn install")

    assert result.exit_code == 0, result.output
@@ -713,7 +731,12 @@ def test_remote_build_creates_an_internal_source_deployment_and_uploads_the_arch
    assert deploy_project.control_plane.bodies[CREATE_DEPLOYMENT]["source"] == (
        "internal_source"
    )
-    assert deploy_project.uploads == [(SIGNED_UPLOAD_URL, ARCHIVE[0], ARCHIVE[1])]
+    assert deploy_project.control_plane.bodies[_upload_url(CREATED_ID)] == {
+        "supports_upload_headers": True
+    }
+    assert deploy_project.uploads == [
+        (SIGNED_UPLOAD_URL, ARCHIVE[0], ARCHIVE[1], upload_headers)
+    ]
    assert deploy_project.control_plane.bodies[_patch(CREATED_ID)] == {
        "revision_source": "internal_source",
        "source_revision_config": {
@@ -1288,14 +1311,16 @@ def test_listener_flags_without_push_to_make_no_call_at_all(
    assert deploy_project.timeline == []


-def test_a_truncated_listener_page_says_so(deploy_project: DeployProject) -> None:
+def test_listeners_beyond_the_first_page_are_counted(
+    deploy_project: DeployProject,
+) -> None:
    deploy_project.control_plane.listeners = [
        {
            "id": str(uuid.UUID(int=index)),
            "compute_id": "cluster",
            "compute_config": {"k8s_namespaces": ["agents"]},
        }
-        for index in range(100)
+        for index in range(101)
    ]

    result = deploy_project.run(
@@ -1303,7 +1328,8 @@ def test_a_truncated_listener_page_says_so(deploy_project: DeployProject) -> Non
    )

    assert result.exit_code != 0
-    assert "first 100" in result.output
+    assert "... and 91 more" in result.output
+    assert "first 100" not in result.output


 def test_a_managed_build_in_a_listener_workspace_points_at_push_to(
@@ -75,6 +75,7 @@ def test_agent_create(deployment_api, tmp_path, monkeypatch):
        "agent_id": "customer-support",
        "agent_environment": "staging",
        "limit": "100",
+        "offset": "0",
    }
    payload = json.loads(requests[1].content)
    assert payload["agent"] == {
@@ -84,6 +85,8 @@ def test_agent_create(deployment_api, tmp_path, monkeypatch):
    assert "name" not in payload
    assert build.call_args.kwargs["deployment_id"] == "runtime-id"
    assert "server-name" in result.output
+    assert "'langgraph deploy' is in beta" in result.output
+    assert "private beta" not in result.output
    assert (tmp_path / ".env").read_text() == "LANGSMITH_DEPLOYMENT_NAME=legacy\n"


@@ -33,6 +33,7 @@ from langgraph_cli.deploy import (
    _Emitter,
    _env_without_deployment_name,
    _parse_env_from_config,
+    _print_deployment_result,
    _resolve_env_path,
    _resolve_pushed_image_digest,
    _resource_spec,
@@ -536,6 +537,39 @@ class TestEmitterTextMode:
        assert "URL: https://app.test" in lines


+@pytest.mark.parametrize(
+    ("deployment", "expected_url_lines"),
+    [
+        pytest.param(
+            {
+                "id": "dep-1",
+                "source_config": {"custom_url": "https://agent.example.com"},
+            },
+            ["URL: https://agent.example.com"],
+            id="custom_url_is_printed",
+        ),
+        pytest.param(
+            {"id": "dep-1", "source_config": {}}, [], id="no_custom_url_no_line"
+        ),
+    ],
+)
+def test_a_deployed_result_prints_the_deployment_url(
+    capsys, monkeypatch, deployment, expected_url_lines
+):
+    class FakeClient:
+        def get_deployment(self, deployment_id: str) -> dict:
+            return deployment
+
+    monkeypatch.setattr(deploy_mod, "_emitter", None)
+
+    _print_deployment_result(
+        FakeClient(), "dep-1", "DEPLOYED", dashboard_label="Deployment dashboard"
+    )
+
+    lines = [line.strip() for line in capsys.readouterr().out.splitlines()]
+    assert [line for line in lines if line.startswith("URL:")] == expected_url_lines
+
+
 # ---------------------------------------------------------------------------
 # --no-input guard on _create_host_backend_client
 # ---------------------------------------------------------------------------
@@ -1210,6 +1244,7 @@ def test_finding_a_deployment_by_name_narrows_the_search_for_every_server_versio
        "name": "agent",
        "name_contains": "agent",
        "limit": "100",
+        "offset": "0",
    }
    assert found == ExistingDeployment("dep-1", "github")

@@ -1237,20 +1272,29 @@ def test_a_server_that_ignores_the_exact_name_filter_never_matches_another_deplo
    assert find_deployment_by_name(client, "brand-new-agent") is None


-def test_a_full_page_without_a_match_refuses_to_claim_the_name_is_free():
-    page = [
-        {"id": f"dep-{index}", "name": f"other-agent-{index}"} for index in range(100)
-    ]
-    client = HostBackendClient(
-        "https://api.example.com",
-        "key",
-        transport=httpx.MockTransport(
-            lambda req: httpx.Response(200, json={"resources": page})
+def test_a_deployment_beyond_the_first_page_is_found_by_name():
+    deployments = [
+        *(
+            {"id": f"dep-{index}", "name": f"other-agent-{index}"}
+            for index in range(100)
        ),
+        {"id": "dep-target", "name": "agent", "source": "external_docker"},
+    ]
+
+    def handler(req: httpx.Request) -> httpx.Response:
+        offset = int(req.url.params["offset"])
+        limit = int(req.url.params["limit"])
+        return httpx.Response(
+            200, json={"resources": deployments[offset : offset + limit]}
+        )
+
+    client = HostBackendClient(
+        "https://api.example.com", "key", transport=httpx.MockTransport(handler)
    )

-    with pytest.raises(click.ClickException, match="--deployment-id"):
-        find_deployment_by_name(client, "brand-new-agent")
+    assert find_deployment_by_name(client, "agent") == ExistingDeployment(
+        "dep-target", "external_docker"
+    )


 def test_a_partial_page_without_a_match_means_the_name_is_free():
@@ -1414,3 +1458,59 @@ class TestPlacementOnAKnownListener:
    def test_refuses_and_names_the_namespaces(self, request_, listener, message):
        with pytest.raises(click.UsageError, match=message):
            request_.on(listener)
+
+
+DEFAULT_UPLOAD_HEADERS = {
+    "content-type": "application/gzip",
+    "content-length": "7",
+    "x-goog-content-length-range": "0,209715200",
+}
+
+
+@pytest.mark.parametrize(
+    ("upload_headers", "expected"),
+    [
+        pytest.param(None, DEFAULT_UPLOAD_HEADERS, id="missing_sends_defaults"),
+        pytest.param({}, DEFAULT_UPLOAD_HEADERS, id="empty_sends_defaults"),
+        pytest.param(
+            {
+                "content-type": "application/x-gzip",
+                "x-ms-blob-type": "BlockBlob",
+                "content-length": "1",
+            },
+            {
+                "content-type": "application/x-gzip",
+                "x-ms-blob-type": "BlockBlob",
+                "content-length": "7",
+            },
+            id="returned_headers_replace_defaults",
+        ),
+        pytest.param(
+            {"x-ms-blob-type": "BlockBlob"},
+            {
+                "content-type": "application/gzip",
+                "x-ms-blob-type": "BlockBlob",
+                "content-length": "7",
+            },
+            id="returned_headers_keep_a_content_type",
+        ),
+    ],
+)
+def test_source_upload_sends_the_headers_the_signed_url_requires(
+    tmp_path, mocker, upload_headers, expected
+):
+    archive = tmp_path / "source.tar.gz"
+    archive.write_bytes(b"tarball")
+    sent = []
+    mocker.patch(
+        "langgraph_cli.deploy._get_emitter", return_value=MagicMock(json_mode=True)
+    )
+    mocker.patch(
+        "urllib.request.urlopen", side_effect=lambda req, timeout: sent.append(req)
+    )
+
+    deploy_mod._upload_source_tarball(
+        "https://storage.example/signed", str(archive), 7, upload_headers
+    )
+
+    assert {name.lower(): value for name, value in sent[0].header_items()} == expected
@@ -575,7 +575,7 @@ def test_list_listeners_asks_for_a_full_page():
    )

    assert c.list_listeners() == [{"id": "listener-1"}]
-    assert seen["url"] == "https://api.example.com/v2/listeners?limit=100"
+    assert seen["url"] == "https://api.example.com/v2/listeners?limit=100&offset=0"


@pytest.mark.parametrize(
@@ -602,29 +602,30 @@ def test_is_cloud_recognises_the_managed_control_plane(control_plane_url, expect
    assert endpoints.is_cloud is expected


+FIRST_PAGE = {"limit": "100", "offset": "0"}
+
+
@pytest.mark.parametrize(
    ("call", "expected_params"),
    [
        pytest.param(
            lambda c: c.list_deployments(name="agent"),
-            {"name": "agent"},
+            {"name": "agent", **FIRST_PAGE},
            id="exact_name_filters_server_side",
        ),
        pytest.param(
            lambda c: c.list_deployments(name_contains="age"),
-            {"name_contains": "age"},
+            {"name_contains": "age", **FIRST_PAGE},
            id="substring_search_keeps_its_own_parameter",
        ),
        pytest.param(
            lambda c: c.list_deployments(),
-            {},
-            id="no_filter_sends_no_parameters",
+            FIRST_PAGE,
+            id="no_filter_sends_only_the_page",
        ),
        pytest.param(
-            lambda c: c.list_deployments(
-                name="agent", name_contains="agent", limit=100
-            ),
-            {"name": "agent", "name_contains": "agent", "limit": "100"},
+            lambda c: c.list_deployments(name="agent", name_contains="agent"),
+            {"name": "agent", "name_contains": "agent", **FIRST_PAGE},
            id="both_filters_travel_together_for_older_servers",
        ),
    ],
@@ -645,6 +646,68 @@ def test_list_deployments_sends_one_name_filter(call, expected_params):
    assert seen == expected_params


+@pytest.mark.parametrize(
+    "list_every",
+    [
+        pytest.param(HostBackendClient.list_deployments, id="deployments"),
+        pytest.param(HostBackendClient.list_listeners, id="listeners"),
+    ],
+)
+def test_list_endpoints_read_every_page(list_every):
+    resources = [{"id": f"resource-{index}"} for index in range(101)]
+    offsets: list[str] = []
+
+    def handler(req: httpx.Request) -> httpx.Response:
+        offset = int(req.url.params["offset"])
+        limit = int(req.url.params["limit"])
+        offsets.append(req.url.params["offset"])
+        return httpx.Response(
+            200, json={"resources": resources[offset : offset + limit]}
+        )
+
+    c = HostBackendClient(
+        "https://api.example.com", "key", transport=httpx.MockTransport(handler)
+    )
+
+    assert list_every(c) == resources
+    assert offsets == ["0", "100"]
+
+
+FIRST_PAGE_OF_DEPLOYMENTS = [
+    {"id": f"dep-{index}", "status": "DEPLOYED"} for index in range(100)
+]
+
+
+@pytest.mark.parametrize(
+    "repeated_page",
+    [
+        pytest.param(FIRST_PAGE_OF_DEPLOYMENTS, id="same_page_again"),
+        pytest.param(
+            [
+                {"id": "dep-99", "status": "DEPLOYING"},
+                *FIRST_PAGE_OF_DEPLOYMENTS[:99],
+            ],
+            id="same_deployments_reordered_and_updated",
+        ),
+    ],
+)
+def test_list_deployments_fails_when_the_server_ignores_the_offset(repeated_page):
+    pages = iter([FIRST_PAGE_OF_DEPLOYMENTS, repeated_page])
+
+    def handler(req: httpx.Request) -> httpx.Response:
+        page = next(pages, None)
+        if page is None:
+            return httpx.Response(500, json={"detail": "the guard let paging run on"})
+        return httpx.Response(200, json={"resources": page})
+
+    c = HostBackendClient(
+        "https://api.example.com", "key", transport=httpx.MockTransport(handler)
+    )
+
+    with pytest.raises(HostBackendError, match="ignores 'offset'"):
+        c.list_deployments()
+
+
@pytest.mark.parametrize(
    ("body", "expected"),
    [
@@ -1,11 +1,6 @@
 from unittest.mock import patch

-from langgraph_cli.deploy import (
-    _extract_deployment_url,
-    format_deployments_table,
-    format_listeners_table,
-    format_revisions_table,
-)
+from langgraph_cli.deploy import Table
 from langgraph_cli.util import clean_empty_lines, warn_non_wolfi_distro


@@ -194,96 +189,7 @@ def test_warn_non_wolfi_distro_does_not_modify_config():
    assert config_copy == original_config  # Config should remain unchanged


-def test_extract_deployment_url_uses_custom_url():
-    deployment = {"source_config": {"custom_url": "https://example.com/custom"}}
-    assert _extract_deployment_url(deployment) == "https://example.com/custom"
+def test_a_table_without_rows_still_renders_its_headers():
+    table = Table(("Name", "Status"), lambda resource: (None, None))

-
-def test_extract_deployment_url_defaults_to_dash():
-    assert _extract_deployment_url({"id": "dep-123"}) == "-"
-
-
-def test_format_deployments_table():
-    output = format_deployments_table(
-        [
-            {
-                "id": "dep-123",
-                "name": "alpha",
-                "source_config": {"custom_url": "https://alpha.example.com"},
-            },
-            {
-                "id": "dep-456",
-                "name": "beta",
-                "url": "https://beta.example.com",
-            },
-        ]
-    )
-    assert "Deployment ID" in output
-    assert "Deployment Name" in output
-    assert "Deployment URL" in output
-    assert "dep-123" in output
-    assert "alpha" in output
-    assert "https://alpha.example.com" in output
-    assert "dep-456" in output
-
-
-def test_format_revisions_table():
-    output = format_revisions_table(
-        [
-            {
-                "id": "rev-123",
-                "status": "DEPLOYED",
-                "created_at": "2023-11-09T10:00:00Z",
-            },
-            {
-                "id": "rev-456",
-                "status": "CREATING",
-                "created_at": "2023-11-07T05:31:56Z",
-            },
-            {
-                "id": "rev-789",
-                "status": "DEPLOYED",
-                "created_at": "2023-11-08T10:00:00Z",
-            },
-        ]
-    )
-    assert "Revision ID" in output
-    assert "Status" in output
-    assert "Created At" in output
-    assert "rev-123" in output
-    assert "CREATING" in output
-    assert "2023-11-07T05:31:56Z" in output
-    assert "rev-456" in output
-    assert "rev-789" in output
-    assert "REPLACED" in output
-
-
-def test_format_listeners_table():
-    output = format_listeners_table(
-        [
-            {
-                "id": "listener-1",
-                "compute_id": "prod-cluster",
-                "compute_config": {"k8s_namespaces": ["agents"]},
-            },
-            {
-                "id": "listener-2",
-                "compute_id": "multi-cluster",
-                "compute_config": {"k8s_namespaces": ["agents", "agents-staging"]},
-            },
-            {
-                "id": "listener-3",
-                "compute_id": "broken-cluster",
-            },
-        ]
-    )
-    assert "Listener ID" in output
-    assert "Compute ID" in output
-    assert "Namespaces" in output
-    assert "listener-1" in output
-    assert "prod-cluster" in output
-    assert "agents" in output
-    assert "listener-2" in output
-    assert "agents, agents-staging" in output
-    assert "listener-3" in output
-    assert "broken-cluster" in output
+    assert table.render([]).splitlines() == ["Name  Status", "----  ------"]
@@ -250,7 +250,7 @@ wheels = [

 [[package]]
 name = "langgraph"
-version = "1.2.11"
+version = "1.2.19"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "langchain-core" },
@@ -260,9 +260,9 @@ dependencies = [
    { name = "pydantic" },
    { name = "xxhash" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/56/0d/c8e7ee98896659e1b6555db0ab115a9ca899844744645d5d894032bab1d7/langgraph-1.2.11.tar.gz", hash = "sha256:9ecfe11e50d338b34b15cf4d8a442642de103e8ae6971320efba84e4542eb363", size = 725753, upload-time = "2026-08-11T14:00:36.945Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/ba/10/329dc49ce3fc40e36faafd407f08607fe3fab75613e709a66758b53faac2/langgraph-1.2.19.tar.gz", hash = "sha256:4a00fa1aad2b5fc2d3a789a8e9eaf993f76218ca924b434902ecf1bbaaf300f6", size = 782618, upload-time = "2026-10-30T22:23:32.962Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/0a/7f/c5c30e4be99ff821029c7ac872a480676bb179c9f3df85ea3f38d13f86d4/langgraph-1.2.11-py3-none-any.whl", hash = "sha256:8bab70de7b2d00b5300fb289bcf38d8b241400f3184c1e95e8ce706fb0e8686b", size = 248854, upload-time = "2026-08-11T14:00:35.494Z" },
+    { url = "https://files.pythonhosted.org/packages/d7/9e/bd29e368fb16feea8d24270d377d56c34b49afea371717124f19cdfa890c/langgraph-1.2.19-py3-none-any.whl", hash = "sha256:6094a5cbed52a77d8c74c276fcd2056abde7b2836eab1c7a6b74bacbd1a269b3", size = 262285, upload-time = "2026-10-30T22:23:31.334Z" },
 ]

 [[package]]
@@ -308,7 +308,7 @@ wheels = [

 [[package]]
 name = "langgraph-sdk"
-version = "0.4.4"
+version = "0.4.11"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "httpx" },
@@ -317,9 +317,9 @@ dependencies = [
    { name = "orjson" },
    { name = "websockets" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/3f/ae/91446c1fffa04a2dc1f81afbfb5bfff3590452891a72bd9098a656ab2657/langgraph_sdk-0.4.4.tar.gz", hash = "sha256:4e651ffa09de695681579396375377bdde23bedbc8e35b070e615cbd5af7da8b", size = 345789, upload-time = "2026-08-27T21:25:22.593Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/64/a8/d5807df5976f2b8e181baddbddf857cc0ba501bba274e81711b10385c65b/langgraph_sdk-0.4.11.tar.gz", hash = "sha256:2550af3bc7cb78ac4facb97d141ec1a76568fa3eb3d29040cff70b45bda84740", size = 366656, upload-time = "2026-10-30T22:17:49.202Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/43/d5/2ad7f3a835c6fcebf58b6669552536ecd52d2dfe4cf49c6c36648fd83572/langgraph_sdk-0.4.4-py3-none-any.whl", hash = "sha256:39afe416c91742925e6f8a93715f566d499b36e1b636b804a4ffe3190e4f4e64", size = 162270, upload-time = "2026-08-27T21:25:21.072Z" },
+    { url = "https://files.pythonhosted.org/packages/01/88/69899bb20b96b80468e98b90377e605c36658125e7e7fba401868a86138e/langgraph_sdk-0.4.11-py3-none-any.whl", hash = "sha256:6a65be4a8f825966a07317b8e34e3337cd227b9b58b185f0123fd13c3d0116fa", size = 169311, upload-time = "2026-10-30T22:17:47.96Z" },
 ]

 [[package]]
@@ -1,5 +1,5 @@
 version = 1
-revision = 3
+revision = 5
 requires-python = ">=3.11"

 [[package]]
@@ -224,7 +224,7 @@ wheels = [

 [[package]]
 name = "langgraph"
-version = "1.2.11"
+version = "1.2.19"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "langchain-core" },
@@ -234,22 +234,22 @@ dependencies = [
    { name = "pydantic" },
    { name = "xxhash" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/56/0d/c8e7ee98896659e1b6555db0ab115a9ca899844744645d5d894032bab1d7/langgraph-1.2.11.tar.gz", hash = "sha256:9ecfe11e50d338b34b15cf4d8a442642de103e8ae6971320efba84e4542eb363", size = 725753, upload-time = "2026-08-11T14:00:36.945Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/ba/10/329dc49ce3fc40e36faafd407f08607fe3fab75613e709a66758b53faac2/langgraph-1.2.19.tar.gz", hash = "sha256:4a00fa1aad2b5fc2d3a789a8e9eaf993f76218ca924b434902ecf1bbaaf300f6", size = 782618, upload-time = "2026-10-30T22:23:32.962Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/0a/7f/c5c30e4be99ff821029c7ac872a480676bb179c9f3df85ea3f38d13f86d4/langgraph-1.2.11-py3-none-any.whl", hash = "sha256:8bab70de7b2d00b5300fb289bcf38d8b241400f3184c1e95e8ce706fb0e8686b", size = 248854, upload-time = "2026-08-11T14:00:35.494Z" },
+    { url = "https://files.pythonhosted.org/packages/d7/9e/bd29e368fb16feea8d24270d377d56c34b49afea371717124f19cdfa890c/langgraph-1.2.19-py3-none-any.whl", hash = "sha256:6094a5cbed52a77d8c74c276fcd2056abde7b2836eab1c7a6b74bacbd1a269b3", size = 262285, upload-time = "2026-10-30T22:23:31.334Z" },
 ]

 [[package]]
 name = "langgraph-checkpoint"
-version = "4.1.1"
+version = "4.3.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "langchain-core" },
    { name = "ormsgpack" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/83/47/886af6f886f0bff2273164a45f008694e48a96ff3cd25ff0228f2aa9480e/langgraph_checkpoint-4.1.1.tar.gz", hash = "sha256:6c2bdb530c91f91d7d9c1bd100925d0fc4f498d418c17f3587d1526279482a25", size = 184020, upload-time = "2026-05-22T16:57:38.503Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/f0/c4/f4107f50dd07169d08d95766cd69104231e694f44a1b25b68ad8b393712d/langgraph_checkpoint-4.3.1.tar.gz", hash = "sha256:625e7c78a72b33e7c47f7e87ca051060fb90aa66f5fd551c472c08376fb669cb", size = 182679, upload-time = "2026-10-26T19:57:31.416Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/bd/b4/71425e3e38be92611300b9cc5e46a5bf98ab23f5ea8a75b73d02a2f1413c/langgraph_checkpoint-4.1.1-py3-none-any.whl", hash = "sha256:25d29144b082827218e7bc3f1e9b0566a4bb007895cd6cc26f66a8428739f56e", size = 56212, upload-time = "2026-05-22T16:57:37.203Z" },
+    { url = "https://files.pythonhosted.org/packages/f3/40/4251d676b5c585d42175c901175d4bff56e22939625e18bcef781fc3e893/langgraph_checkpoint-4.3.1-py3-none-any.whl", hash = "sha256:215a826935c8db4d9676e79fd95943e5b3847d78604390898e1d98581cc594e5", size = 58093, upload-time = "2026-10-26T19:57:30.361Z" },
 ]

 [[package]]
@@ -267,7 +267,7 @@ wheels = [

 [[package]]
 name = "langgraph-sdk"
-version = "0.4.4"
+version = "0.4.11"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "httpx" },
@@ -276,9 +276,9 @@ dependencies = [
    { name = "orjson" },
    { name = "websockets" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/3f/ae/91446c1fffa04a2dc1f81afbfb5bfff3590452891a72bd9098a656ab2657/langgraph_sdk-0.4.4.tar.gz", hash = "sha256:4e651ffa09de695681579396375377bdde23bedbc8e35b070e615cbd5af7da8b", size = 345789, upload-time = "2026-08-27T21:25:22.593Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/64/a8/d5807df5976f2b8e181baddbddf857cc0ba501bba274e81711b10385c65b/langgraph_sdk-0.4.11.tar.gz", hash = "sha256:2550af3bc7cb78ac4facb97d141ec1a76568fa3eb3d29040cff70b45bda84740", size = 366656, upload-time = "2026-10-30T22:17:49.202Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/43/d5/2ad7f3a835c6fcebf58b6669552536ecd52d2dfe4cf49c6c36648fd83572/langgraph_sdk-0.4.4-py3-none-any.whl", hash = "sha256:39afe416c91742925e6f8a93715f566d499b36e1b636b804a4ffe3190e4f4e64", size = 162270, upload-time = "2026-08-27T21:25:21.072Z" },
+    { url = "https://files.pythonhosted.org/packages/01/88/69899bb20b96b80468e98b90377e605c36658125e7e7fba401868a86138e/langgraph_sdk-0.4.11-py3-none-any.whl", hash = "sha256:6a65be4a8f825966a07317b8e34e3337cd227b9b58b185f0123fd13c3d0116fa", size = 169311, upload-time = "2026-10-30T22:17:47.96Z" },
 ]

 [[package]]
@@ -992,9 +992,11 @@ wheels = [

 [[package]]
 name = "langchain-core"
-version = "1.4.0"
+version = "1.7.3"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
+    { name = "certifi" },
+    { name = "httpx" },
    { name = "jsonpatch" },
    { name = "langchain-protocol" },
    { name = "langsmith" },
@@ -1005,26 +1007,26 @@ dependencies = [
    { name = "typing-extensions", version = "4.15.0", source = { registry = "https://pypi.org/simple" } },
    { name = "uuid-utils" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/59/de/679a53472c25860837e32c0442c962fa86e95317a36460e2c9d5c91b17c2/langchain_core-1.4.0.tar.gz", hash = "sha256:1dc341eed802ed9c117c0df3923c991e5e9e226571e5725c194eeb5bd93d1a7f", size = 920260, upload-time = "2026-05-11T18:42:35.919Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/ac/90/f932d9c82d15033ae9676fb3670993e10e1b4d9c59fe1b7ae024dee11955/langchain_core-1.7.3.tar.gz", hash = "sha256:77f70b81e238c981bfd8405840b03fdf143735ac93c0729c2bdb39d6f0648024", size = 1029116, upload-time = "2026-10-29T20:55:56.42Z" }
 wheels = [
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+    { url = "https://files.pythonhosted.org/packages/b4/c6/88bcc77899601e09a428d9c764e41ac3e7ede161384f85b9a2a8a828f81d/langchain_core-1.7.3-py3-none-any.whl", hash = "sha256:460c214bf31495d7b7e0a879e408dbfda677fd53fd879da786c1b966a4f6bff6", size = 577074, upload-time = "2026-10-29T20:55:54.722Z" },
 ]

 [[package]]
 name = "langchain-protocol"
-version = "0.0.17"
+version = "0.0.20"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "typing-extensions", version = "4.15.0", source = { registry = "https://pypi.org/simple" } },
 ]
-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" }
+sdist = { url = "https://files.pythonhosted.org/packages/cb/8b/d908d082c3cf5368ddd1816ed114de79c873f979ba7f98b95fab0e841643/langchain_protocol-0.0.20.tar.gz", hash = "sha256:0f5bd002474265648e91161771a9e0438fe9480bd55a416e51af0f60070637ec", size = 6280, upload-time = "2026-10-20T11:13:50.84Z" }
 wheels = [
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+    { url = "https://files.pythonhosted.org/packages/02/4b/f1c99a0b27c5ff8b4b131c0d6e62012c17cc424089efe213767db927afd2/langchain_protocol-0.0.20-py3-none-any.whl", hash = "sha256:3c935e5e46b0f6f9cb52f45ba7cfa53d1b9fa80c82c4a277d47f03e07f7385b1", size = 7347, upload-time = "2026-10-20T11:13:49.566Z" },
 ]

 [[package]]
 name = "langgraph"
-version = "1.2.3"
+version = "1.2.14"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "langchain-core" },
@@ -1034,9 +1036,9 @@ dependencies = [
    { name = "pydantic" },
    { name = "xxhash" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/5c/55/e42f59b5e4cce75085f68abb77114c4d1152628157bd60c2587881bca559/langgraph-1.2.3.tar.gz", hash = "sha256:7f89cd5f0946fe29bd7ca048e2a84d3c14e7f652e38bb98e00f0ba8b7004b9d0", size = 718812, upload-time = "2026-06-01T18:55:54.458Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/49/3f/6e60789eab2c5ceaf34ba2c626ac345df93b026bbe7385018aa4b9c30397/langgraph-1.2.14.tar.gz", hash = "sha256:5b1a72b7a7f994ac6947b7751fbbe00e949f8bb44d9ab78881604b703247ae55", size = 752793, upload-time = "2026-10-06T14:41:19.789Z" }
 wheels = [
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+    { url = "https://files.pythonhosted.org/packages/ec/4a/f976df0d3cf7fb7986dc39f656c6b7b5655834430e9bdfaef1e1e4fffaba/langgraph-1.2.14-py3-none-any.whl", hash = "sha256:e3f5f8ff4259f9281b73ff50fc9ef5cc3b025b8936b8283ecdca7cc0c4128690", size = 255980, upload-time = "2026-10-06T14:41:18.129Z" },
 ]

 [[package]]
@@ -1209,7 +1211,7 @@ wheels = [

 [[package]]
 name = "langgraph-sdk"
-version = "0.4.5"
+version = "0.4.6"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "httpx" },
@@ -1218,30 +1220,34 @@ dependencies = [
    { name = "orjson" },
    { name = "websockets" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/e8/9c/7ff305b366ce986052a27dc5946839bef2823b3567664cbad22e294dff5a/langgraph_sdk-0.4.5.tar.gz", hash = "sha256:d49a98a2ee8e0c494b101a7caf8061c8b4b94d3ee5ada0ea2dbe50903a5487b1", size = 349783, upload-time = "2026-09-21T14:42:55.732Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/78/85/54edf4902c0378510f09a009f64e3d3f5644aeeb51d13cf67ec380a5245b/langgraph_sdk-0.4.6.tar.gz", hash = "sha256:ea5b1749d70987d741c9b9fe2b7e1c5f7da7e4d102f64e390333c1890c9bbd5b", size = 350632, upload-time = "2026-10-06T14:17:53.641Z" }
 wheels = [
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+    { url = "https://files.pythonhosted.org/packages/6c/c7/69d13026db3577c157877dea47a9dc5fffd3dcde2d1ab8009fa8f7e5f6a6/langgraph_sdk-0.4.6-py3-none-any.whl", hash = "sha256:57122b02bda41d37a97a5e09eb018aa8c9b3dc85c433880073779bd9324b7eea", size = 162390, upload-time = "2026-10-06T14:17:52.134Z" },
 ]

 [[package]]
 name = "langsmith"
-version = "0.8.18"
+version = "0.14.16"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "httpx" },
+    { name = "anyio" },
+    { name = "distro" },
+    { name = "httpx2" },
    { name = "orjson", marker = "platform_python_implementation != 'PyPy'" },
    { name = "packaging" },
    { name = "pydantic" },
    { name = "requests" },
    { name = "requests-toolbelt" },
+    { name = "sniffio" },
+    { name = "typing-extensions", version = "4.15.0", source = { registry = "https://pypi.org/simple" } },
    { name = "uuid-utils" },
    { name = "websockets" },
    { name = "xxhash" },
    { name = "zstandard" },
 ]
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+sdist = { url = "https://files.pythonhosted.org/packages/f5/45/576803a72da96d9c0866b3815f08f447ed16c14acb52174129daca6847d6/langsmith-0.14.16.tar.gz", hash = "sha256:4e5816cbe1541f4d04d71f652eb8f4137889861bebcf7137bcba3553ae9e335e", size = 5096529, upload-time = "2026-10-29T17:53:27.747Z" }
 wheels = [
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+    { url = "https://files.pythonhosted.org/packages/11/3a/9a072c02a22089ddf20f0f33ea95bee5a5951b31839f118b04f27b94be6e/langsmith-0.14.16-py3-none-any.whl", hash = "sha256:b9ea1a57622b0788b181d78605f974fb206c5f6f75793076ffec23cef4d904c8", size = 933680, upload-time = "2026-10-29T17:53:25.465Z" },
 ]

 [package.optional-dependencies]
@@ -2093,6 +2099,15 @@ wheels = [
    { url = "https://files.pythonhosted.org/packages/b7/ce/149a00dd41f10bc29e5921b496af8b574d8413afcd5e30dfa0ed46c2cc5e/six-1.17.0-py2.py3-none-any.whl", hash = "sha256:4721f391ed90541fddacab5acf947aa0d3dc7d27b2e1e8eda2be8970586c3274", size = 11050, upload-time = "2024-12-04T17:35:26.475Z" },
 ]

+[[package]]
+name = "sniffio"
+version = "1.3.1"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/a2/87/a6771e1546d97e7e041b6ae58d80074f81b7d5121207425c964ddf5cfdbd/sniffio-1.3.1.tar.gz", hash = "sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc", size = 20372, upload-time = "2024-02-25T23:20:04.057Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/e9/44/75a9c9421471a6c4805dbf2356f7c181a29c1879239abab1ea2cc8f38b40/sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2", size = 10235, upload-time = "2024-02-25T23:20:01.196Z" },
+]
+
 [[package]]
 name = "sse-starlette"
 version = "3.3.4"
@@ -347,6 +347,7 @@ def ensure_config(*configs: RunnableConfig | None) -> RunnableConfig:
        recursion_limit=DEFAULT_RECURSION_LIMIT,
        configurable={},
    )
+    inherited_tags: set[str] = set()
    if var_config := var_child_runnable_config.get():
        empty.update(
            {
@@ -355,6 +356,7 @@ def ensure_config(*configs: RunnableConfig | None) -> RunnableConfig:
                if _is_not_empty(v)
            },
        )
+        inherited_tags.update(empty["tags"])
    # An explicit config that supplies its own checkpoint coordinate (a
    # thread_id, or any checkpoint_ns/checkpoint_id/checkpoint_map) is addressing
    # its own checkpoint lineage, so drop the inherited ambient configurable
@@ -407,12 +409,14 @@ def ensure_config(*configs: RunnableConfig | None) -> RunnableConfig:
                elif k == "tags":
                    # Concatenate tags across configs so values bound via
                    # with_config(...) are preserved when later configs
-                    # supply additional tags. Matches merge_configs.
+                    # supply additional tags. Matches merge_configs. Tags the
+                    # ambient config already has are skipped: a subgraph gets
+                    # its parent's config both explicitly and as the ambient
+                    # one, so they would double at every nesting level.
                    existing_tags: list[str] | None = empty.get("tags")
+                    new_tags = [t for t in cast(list, v) if t not in inherited_tags]
                    empty["tags"] = (
-                        [*existing_tags, *cast(list, v)]
-                        if existing_tags
-                        else list(cast(list, v))
+                        [*existing_tags, *new_tags] if existing_tags else new_tags
                    )
                else:
                    empty[k] = v  # type: ignore[literal-required]
@@ -1,6 +1,7 @@
 from __future__ import annotations

 import asyncio
+import copy
 import enum
 import inspect
 import logging
@@ -23,9 +24,16 @@ from typing import (
    Optional,
    Protocol,
    TypeGuard,
+    TypeVar,
    cast,
 )

+from langchain_core.callbacks.base import BaseCallbackHandler, BaseCallbackManager
+from langchain_core.callbacks.manager import (
+    AsyncCallbackManagerForChainRun,
+    BaseRunManager,
+    CallbackManagerForChainRun,
+)
 from langchain_core.runnables.base import (
    Runnable,
    RunnableConfig,
@@ -41,6 +49,7 @@ from langchain_core.runnables.config import (
    var_child_runnable_config,
 )
 from langchain_core.runnables.utils import Input, Output
+from langchain_core.tracers.base import BaseTracer
 from langchain_core.tracers.langchain import LangChainTracer
 from langgraph.store.base import BaseStore

@@ -57,7 +66,7 @@ from langgraph._internal._constants import (
 )
 from langgraph._internal._typing import MISSING
 from langgraph.errors import NodeError
-from langgraph.types import StreamWriter
+from langgraph.types import StreamWriter, TracePolicy

 try:
    from langchain_core.tracers._streaming import _StreamingCallbackHandler
@@ -85,6 +94,29 @@ def _trace_payload(value: Any, transform: Callable[[Any], Any] | None) -> Any:
        return value


+def _is_stream_handler(handler: BaseCallbackHandler) -> bool:
+    # Inheritance, not isinstance on the runtime-checkable protocol, which also
+    # matches any exporter that merely has the tap methods: stream handlers get a
+    # node's real payload and its streamed output.
+    return _StreamingCallbackHandler in type(handler).__mro__
+
+
+_M = TypeVar("_M", bound=BaseCallbackManager | BaseRunManager)
+
+
+def _split_handlers(manager: _M) -> tuple[_M, _M]:
+    # The recorded payload exists to keep tracer ingest small, so only tracers get it.
+    # `astream_log`'s handler is a tracer too, but it feeds the caller's own stream.
+    real, tracers = copy.copy(manager), copy.copy(manager)
+    tracers.handlers = [
+        h
+        for h in manager.handlers
+        if isinstance(h, BaseTracer) and not _is_stream_handler(h)
+    ]
+    real.handlers = [h for h in manager.handlers if h not in tracers.handlers]
+    return real, tracers
+
+
 def _set_config_context(
    config: RunnableConfig, run: Any = None
 ) -> Token[RunnableConfig | None]:
@@ -593,13 +625,15 @@ class RunnableSeq(Runnable):
        *steps: RunnableLike,
        name: str | None = None,
        trace_inputs: Callable[[Any], Any] | None = None,
-        trace_outputs: Callable[[Any], Any] | None = None,
+        trace_policy: TracePolicy | None = None,
    ) -> None:
        """Create a new RunnableSeq.

        Args:
            steps: The steps to include in the sequence.
            name: The name of the `Runnable`.
+            trace_inputs: Transforms the input every callback handler receives.
+            trace_policy: Processes what tracers record, after `trace_inputs`.

        Raises:
            ValueError: If the sequence has less than 2 steps.
@@ -619,7 +653,67 @@ class RunnableSeq(Runnable):
        self.steps = steps_flat
        self.name = name
        self.trace_inputs = trace_inputs
-        self.trace_outputs = trace_outputs
+        self.trace_policy = trace_policy or TracePolicy()
+
+    def _start(self, input: Any, config: RunnableConfig) -> CallbackManagerForChainRun:
+        callback_manager = get_callback_manager_for_config(config)
+        payload = _trace_payload(input, self.trace_inputs)
+        recorded = _trace_payload(payload, self.trace_policy.process_inputs)
+        name = config.get("run_name") or self.get_name()
+        run_id = config.pop("run_id", None)
+        if recorded is payload:
+            return callback_manager.on_chain_start(
+                None, payload, name=name, run_id=run_id
+            )
+        real, tracers = _split_handlers(callback_manager)
+        run_manager = real.on_chain_start(None, payload, name=name, run_id=run_id)
+        tracers.on_chain_start(None, recorded, name=name, run_id=run_manager.run_id)
+        run_manager.handlers = callback_manager.handlers
+        return run_manager
+
+    async def _astart(
+        self, input: Any, config: RunnableConfig
+    ) -> AsyncCallbackManagerForChainRun:
+        callback_manager = get_async_callback_manager_for_config(config)
+        payload = _trace_payload(input, self.trace_inputs)
+        recorded = _trace_payload(payload, self.trace_policy.process_inputs)
+        name = config.get("run_name") or self.get_name()
+        run_id = config.pop("run_id", None)
+        if recorded is payload:
+            return await callback_manager.on_chain_start(
+                None, payload, name=name, run_id=run_id
+            )
+        real, tracers = _split_handlers(callback_manager)
+        # Tracers start last, so a cancellation before then leaves no tracer run open.
+        run_manager = await real.on_chain_start(None, payload, name=name, run_id=run_id)
+        await tracers.on_chain_start(
+            None, recorded, name=name, run_id=run_manager.run_id
+        )
+        run_manager.handlers = callback_manager.handlers
+        return run_manager
+
+    def _end(self, run_manager: CallbackManagerForChainRun, output: Any) -> None:
+        recorded = _trace_payload(output, self.trace_policy.process_outputs)
+        if recorded is output:
+            run_manager.on_chain_end(output)
+        else:
+            real, tracers = _split_handlers(run_manager)
+            tracers.on_chain_end(recorded)
+            real.on_chain_end(output)
+
+    async def _aend(
+        self, run_manager: AsyncCallbackManagerForChainRun, output: Any
+    ) -> None:
+        recorded = _trace_payload(output, self.trace_policy.process_outputs)
+        if recorded is output:
+            await run_manager.on_chain_end(output)
+        else:
+            real, tracers = _split_handlers(run_manager)
+            # Tracers end first: on_chain_end is shielded once it starts, so a
+            # cancellation can only skip the other handlers' end, never leave a
+            # tracer run open.
+            await tracers.on_chain_end(recorded)
+            await real.on_chain_end(output)

    def __or__(
        self,
@@ -676,15 +770,8 @@ class RunnableSeq(Runnable):
    ) -> Any:
        if config is None:
            config = ensure_config()
-        # setup callbacks and context
-        callback_manager = get_callback_manager_for_config(config)
        # start the root run
-        run_manager = callback_manager.on_chain_start(
-            None,
-            _trace_payload(input, self.trace_inputs),
-            name=config.get("run_name") or self.get_name(),
-            run_id=config.pop("run_id", None),
-        )
+        run_manager = self._start(input, config)
        # invoke all steps in sequence
        try:
            for i, step in enumerate(self.steps):
@@ -712,7 +799,7 @@ class RunnableSeq(Runnable):
            run_manager.on_chain_error(e)
            raise
        else:
-            run_manager.on_chain_end(_trace_payload(input, self.trace_outputs))
+            self._end(run_manager, input)
            return input

    async def ainvoke(
@@ -723,15 +810,8 @@ class RunnableSeq(Runnable):
    ) -> Any:
        if config is None:
            config = ensure_config()
-        # setup callbacks
-        callback_manager = get_async_callback_manager_for_config(config)
        # start the root run
-        run_manager = await callback_manager.on_chain_start(
-            None,
-            _trace_payload(input, self.trace_inputs),
-            name=config.get("run_name") or self.get_name(),
-            run_id=config.pop("run_id", None),
-        )
+        run_manager = await self._astart(input, config)

        # invoke all steps in sequence
        try:
@@ -765,7 +845,7 @@ class RunnableSeq(Runnable):
            await run_manager.on_chain_error(e)
            raise
        else:
-            await run_manager.on_chain_end(_trace_payload(input, self.trace_outputs))
+            await self._aend(run_manager, input)
            return input

    def stream(
@@ -776,15 +856,8 @@ class RunnableSeq(Runnable):
    ) -> Iterator[Any]:
        if config is None:
            config = ensure_config()
-        # setup callbacks
-        callback_manager = get_callback_manager_for_config(config)
        # start the root run
-        run_manager = callback_manager.on_chain_start(
-            None,
-            _trace_payload(input, self.trace_inputs),
-            name=config.get("run_name") or self.get_name(),
-            run_id=config.pop("run_id", None),
-        )
+        run_manager = self._start(input, config)
        # get the run object
        for h in run_manager.handlers:
            if isinstance(h, LangChainTracer):
@@ -814,10 +887,9 @@ class RunnableSeq(Runnable):
                        )
                        iterator = step.transform(iterator, config)
                # populates streamed_output in astream_log() output if needed
-                if _StreamingCallbackHandler is not None:
-                    for h in run_manager.handlers:
-                        if isinstance(h, _StreamingCallbackHandler):
-                            iterator = h.tap_output_iter(run_manager.run_id, iterator)
+                for h in run_manager.handlers:
+                    if _is_stream_handler(h):
+                        iterator = h.tap_output_iter(run_manager.run_id, iterator)
                # consume into final output
                output = context.run(_consume_iter, iterator)
                # sequence doesn't emit output, yield to mark as generator
@@ -826,7 +898,7 @@ class RunnableSeq(Runnable):
                run_manager.on_chain_error(e)
                raise
            else:
-                run_manager.on_chain_end(_trace_payload(output, self.trace_outputs))
+                self._end(run_manager, output)

    async def astream(
        self,
@@ -836,15 +908,8 @@ class RunnableSeq(Runnable):
    ) -> AsyncIterator[Any]:
        if config is None:
            config = ensure_config()
-        # setup callbacks
-        callback_manager = get_async_callback_manager_for_config(config)
        # start the root run
-        run_manager = await callback_manager.on_chain_start(
-            None,
-            _trace_payload(input, self.trace_inputs),
-            name=config.get("run_name") or self.get_name(),
-            run_id=config.pop("run_id", None),
-        )
+        run_manager = await self._astart(input, config)
        # stream the last steps
        # transform the input stream of each step with the next
        # steps that don't natively support transforming an input stream will
@@ -880,12 +945,11 @@ class RunnableSeq(Runnable):
                            if hasattr(aiterator, "aclose"):
                                stack.push_async_callback(aiterator.aclose)
                        # populates streamed_output in astream_log() output if needed
-                        if _StreamingCallbackHandler is not None:
-                            for h in run_manager.handlers:
-                                if isinstance(h, _StreamingCallbackHandler):
-                                    aiterator = h.tap_output_aiter(
-                                        run_manager.run_id, aiterator
-                                    )
+                        for h in run_manager.handlers:
+                            if _is_stream_handler(h):
+                                aiterator = h.tap_output_aiter(
+                                    run_manager.run_id, aiterator
+                                )
                        # consume into final output
                        output = await asyncio.create_task(
                            _consume_aiter(aiterator), context=context
@@ -896,9 +960,7 @@ class RunnableSeq(Runnable):
                    await run_manager.on_chain_error(e)
                    raise
                else:
-                    await run_manager.on_chain_end(
-                        _trace_payload(output, self.trace_outputs)
-                    )
+                    await self._aend(run_manager, output)
        else:
            try:
                async with AsyncExitStack() as stack:
@@ -914,12 +976,11 @@ class RunnableSeq(Runnable):
                        if hasattr(aiterator, "aclose"):
                            stack.push_async_callback(aiterator.aclose)
                    # populates streamed_output in astream_log() output if needed
-                    if _StreamingCallbackHandler is not None:
-                        for h in run_manager.handlers:
-                            if isinstance(h, _StreamingCallbackHandler):
-                                aiterator = h.tap_output_aiter(
-                                    run_manager.run_id, aiterator
-                                )
+                    for h in run_manager.handlers:
+                        if _is_stream_handler(h):
+                            aiterator = h.tap_output_aiter(
+                                run_manager.run_id, aiterator
+                            )
                    # consume into final output
                    output = await _consume_aiter(aiterator)
                    # sequence doesn't emit output, yield to mark as generator
@@ -928,9 +989,7 @@ class RunnableSeq(Runnable):
                await run_manager.on_chain_error(e)
                raise
            else:
-                await run_manager.on_chain_end(
-                    _trace_payload(output, self.trace_outputs)
-                )
+                await self._aend(run_manager, output)


 def _consume_iter(it: Iterator[Any]) -> Any:
@@ -60,7 +60,7 @@ class DeltaChannel(Generic[Value], BaseChannel[Any, Any, Any]):
        typ: The value type (e.g. `list`, `dict`). Inferred automatically
            from the outer type when used inside `Annotated[T, DeltaChannel(...)]`.
        snapshot_frequency: Every Nth update to this channel writes a snapshot
-            blob (default `1000`). Must be a positive int.
+            blob (default `100`). Must be a positive int.
    """

    __slots__ = ("value", "reducer", "snapshot_frequency")
@@ -71,7 +71,7 @@ class DeltaChannel(Generic[Value], BaseChannel[Any, Any, Any]):
        reducer: Callable[[Any, Sequence[Any]], Any],
        typ: type[Value] | None = None,
        *,
-        snapshot_frequency: int = 1000,
+        snapshot_frequency: int = 100,
    ) -> None:
        if snapshot_frequency <= 0:
            raise ValueError(
@@ -22,7 +22,7 @@ from langchain_core.messages import (
 )
 from typing_extensions import TypedDict, deprecated

-from langgraph._internal._constants import CONF, CONFIG_KEY_SEND, NS_SEP
+from langgraph._internal._constants import CONF, CONFIG_KEY_SEND
 from langgraph.graph.state import StateGraph
 from langgraph.pregel._messages import (
    _messages_delta_reducer as _messages_delta_reducer,
@@ -343,7 +343,7 @@ def push_message(
    )

    from langgraph.config import get_config
-    from langgraph.pregel._messages import StreamMessagesHandler
+    from langgraph.pregel._messages import StreamMessagesHandler, graph_namespace

    config = get_config()
    message = next(x for x in convert_to_messages([message]))
@@ -359,15 +359,12 @@ def push_message(
    ):
        handlers = config["callbacks"]

-    if stream_handler := next(
-        (x for x in handlers if isinstance(x, StreamMessagesHandler)), None
-    ):
-        metadata = config["metadata"]
-        message_meta = (
-            tuple(cast(str, metadata["langgraph_checkpoint_ns"]).split(NS_SEP)),
-            metadata,
-        )
-        stream_handler._emit(message_meta, message, dedupe=False)
+    metadata = config["metadata"]
+    for handler in handlers:
+        if isinstance(handler, StreamMessagesHandler):
+            ns = graph_namespace(metadata)
+            if handler.subgraphs or not ns or ns == handler.parent_ns:
+                handler._emit((ns, metadata), message, dedupe=False)

    if state_key:
        config[CONF][CONFIG_KEY_SEND]([(state_key, message)])
@@ -228,6 +228,10 @@ def draw_graph(
            metadata["__interrupt"] = "before"
        elif name in interrupt_after_nodes:
            metadata["__interrupt"] = "after"
+        # Duck-typed so core doesn't import ToolNode from langgraph-prebuilt.
+        tools_by_name = getattr(node.bound, "tools_by_name", None)
+        if isinstance(tools_by_name, Mapping) and tools_by_name:
+            metadata["__tools"] = list(tools_by_name)
        graph.add_node(node.bound, name, metadata=metadata or None)
    # add start node
    if START not in nodes:
@@ -3,6 +3,7 @@ from __future__ import annotations
 import asyncio
 import concurrent.futures
 import time
+import weakref
 from collections.abc import Awaitable, Callable, Coroutine
 from contextlib import AbstractAsyncContextManager, AbstractContextManager, ExitStack
 from contextvars import copy_context
@@ -37,6 +38,13 @@ class Submit(Protocol[P, T]):
    ) -> concurrent.futures.Future[T]: ...


+# Futures whose exception a node's error handler took over; the executors
+# don't re-raise them on exit.
+SKIP_RERAISE_SET: weakref.WeakSet[concurrent.futures.Future | asyncio.Future] = (
+    weakref.WeakSet()
+)
+
+
 class BackgroundExecutor(AbstractContextManager):
    """A context manager that runs sync tasks in the background.
    Uses a thread pool executor to delegate tasks to separate threads.
@@ -111,7 +119,7 @@ class BackgroundExecutor(AbstractContextManager):
        if exc_type is None:
            # re-raise the first exception that occurred in a task
            for task, (_, reraise) in tasks.items():
-                if not reraise:
+                if not reraise or task in SKIP_RERAISE_SET:
                    continue
                try:
                    task.result()
@@ -202,7 +210,7 @@ class AsyncBackgroundExecutor(AbstractAsyncContextManager):
        if exc_type is None:
            # re-raise the first exception that occurred in a task
            for task, (_, reraise) in tasks.items():
-                if not reraise:
+                if not reraise or task in SKIP_RERAISE_SET:
                    continue
                try:
                    if exc := task.exception():
@@ -657,48 +657,11 @@ class PregelLoop:
        # check if iteration limit is reached
        if self.step > self.stop:
            self.status = "out_of_steps"
+            # stream the checkpoint the last step saved, as a tick that runs would
+            self._prepare_tasks_and_emit_checkpoint()
            return False

-        # prepare next tasks
-        self.tasks = prepare_next_tasks(
-            self.checkpoint,
-            self.checkpoint_pending_writes,
-            self.nodes,
-            self.channels,
-            self.managed,
-            self.config,
-            self.step,
-            self.stop,
-            for_execution=True,
-            manager=self.manager,
-            store=self.store,
-            checkpointer=self.checkpointer,
-            trigger_to_nodes=self.trigger_to_nodes,
-            updated_channels=self.updated_channels,
-            retry_policy=self.retry_policy,
-            cache_policy=self.cache_policy,
-        )
-
-        # produce debug output
-        if self._checkpointer_put_after_previous is not None:
-            self._emit(
-                "checkpoints",
-                map_debug_checkpoint,
-                {
-                    **self.checkpoint_config,
-                    CONF: {
-                        **self.checkpoint_config[CONF],
-                        CONFIG_KEY_CHECKPOINT_ID: self.checkpoint["id"],
-                    },
-                },
-                self.channels,
-                self.stream_keys,
-                self.checkpoint_metadata,
-                self.tasks.values(),
-                self.checkpoint_pending_writes,
-                self.prev_checkpoint_config,
-                self.output_keys,
-            )
+        self._prepare_tasks_and_emit_checkpoint()

        # if no more tasks, we're done
        if not self.tasks:
@@ -806,10 +769,53 @@ class PregelLoop:
            self.checkpoint, self.interrupt_after, self.tasks.values()
        ):
            self.status = "interrupt_after"
+            # the next tick, which streams this checkpoint, never runs
+            self._prepare_tasks_and_emit_checkpoint()
            raise GraphInterrupt()
        # unset resuming flag
        self.config[CONF].pop(CONFIG_KEY_RESUMING, None)

+    def _prepare_tasks_and_emit_checkpoint(self) -> None:
+        self.tasks = prepare_next_tasks(
+            self.checkpoint,
+            self.checkpoint_pending_writes,
+            self.nodes,
+            self.channels,
+            self.managed,
+            self.config,
+            self.step,
+            self.stop,
+            for_execution=True,
+            manager=self.manager,
+            store=self.store,
+            checkpointer=self.checkpointer,
+            trigger_to_nodes=self.trigger_to_nodes,
+            updated_channels=self.updated_channels,
+            retry_policy=self.retry_policy,
+            cache_policy=self.cache_policy,
+        )
+
+        # produce debug output
+        if self._checkpointer_put_after_previous is not None:
+            self._emit(
+                "checkpoints",
+                map_debug_checkpoint,
+                {
+                    **self.checkpoint_config,
+                    CONF: {
+                        **self.checkpoint_config[CONF],
+                        CONFIG_KEY_CHECKPOINT_ID: self.checkpoint["id"],
+                    },
+                },
+                self.channels,
+                self.stream_keys,
+                self.checkpoint_metadata,
+                self.tasks.values(),
+                self.checkpoint_pending_writes,
+                self.prev_checkpoint_config,
+                self.output_keys,
+            )
+
    def match_cached_writes(self) -> Sequence[PregelExecutableTask]:
        raise NotImplementedError

@@ -23,7 +23,7 @@ from langchain_core.outputs import ChatGeneration, ChatGenerationChunk, LLMResul
 from pydantic import BaseModel

 from langgraph._internal._config import filter_to_user_tags
-from langgraph._internal._constants import NS_SEP
+from langgraph._internal._constants import NS_SEP, PUSH
 from langgraph.channels.binop import _get_overwrite
 from langgraph.channels.delta import DeltaChannel
 from langgraph.constants import TAG_HIDDEN, TAG_NOSTREAM
@@ -55,6 +55,23 @@ def _state_values(obj: Any) -> Sequence[Any]:
    return ()


+def graph_namespace(metadata: Mapping[str, Any]) -> tuple[str, ...]:
+    """Namespace of the graph a task runs in, from the task's run metadata.
+
+    Drops the task's own segment, plus one per enclosing `@task` call: a call
+    runs in its caller's graph but nests its segment under the caller's. A
+    call's `langgraph_path` is `(PUSH, <caller's path>, <index>, True)`, while
+    a `Send` task's ends in `False`.
+    """
+    ns = tuple(cast(str, metadata["langgraph_checkpoint_ns"]).split(NS_SEP))
+    path = metadata.get("langgraph_path", ())
+    drop = 1
+    while len(path) == 4 and path[0] == PUSH and path[-1] is True:
+        drop += 1
+        path = path[1]
+    return ns[:-drop]
+
+
 class StreamMessagesHandler(BaseCallbackHandler, _StreamingCallbackHandler):
    """A callback handler that implements stream_mode=messages.

@@ -148,9 +165,7 @@ class StreamMessagesHandler(BaseCallbackHandler, _StreamingCallbackHandler):
        **kwargs: Any,
    ) -> Any:
        if metadata and (not tags or (TAG_NOSTREAM not in tags)):
-            ns = tuple(cast(str, metadata["langgraph_checkpoint_ns"]).split(NS_SEP))[
-                :-1
-            ]
+            ns = graph_namespace(metadata)
            if not self.subgraphs and len(ns) > 0 and ns != self.parent_ns:
                return
            if (filtered_tags := filter_to_user_tags(tags)) is not None:
@@ -213,10 +228,8 @@ class StreamMessagesHandler(BaseCallbackHandler, _StreamingCallbackHandler):
            and kwargs.get("name") == metadata.get("langgraph_node")
            and (not tags or TAG_HIDDEN not in tags)
        ):
-            ns = tuple(cast(str, metadata["langgraph_checkpoint_ns"]).split(NS_SEP))[
-                :-1
-            ]
-            if not self.subgraphs and len(ns) > 0:
+            ns = graph_namespace(metadata)
+            if not self.subgraphs and len(ns) > 0 and ns != self.parent_ns:
                return
            self.metadata[run_id] = (ns, metadata)
            for value in _state_values(inputs):
@@ -227,23 +227,14 @@ class PregelNode:
    def node(self) -> Runnable[Any, Any] | None:
        """Get a runnable that combines `bound` and `writers`."""
        writers = self.flat_writers
-        trace_inputs = self.trace_policy.process_inputs if self.trace_policy else None
-        trace_outputs = self.trace_policy.process_outputs if self.trace_policy else None
        if self.bound is DEFAULT_BOUND and not writers:
            return None
        elif self.bound is DEFAULT_BOUND and len(writers) == 1:
            return writers[0]
        elif self.bound is DEFAULT_BOUND:
-            return RunnableSeq(
-                *writers, trace_inputs=trace_inputs, trace_outputs=trace_outputs
-            )
+            return RunnableSeq(*writers, trace_policy=self.trace_policy)
        elif writers:
-            return RunnableSeq(
-                self.bound,
-                *writers,
-                trace_inputs=trace_inputs,
-                trace_outputs=trace_outputs,
-            )
+            return RunnableSeq(self.bound, *writers, trace_policy=self.trace_policy)
        else:
            return self.bound

@@ -34,6 +34,7 @@ from langgraph._internal._constants import (
    CONFIG_KEY_THREAD_ID,
    CONFIG_KEY_TIMED_ATTEMPT_OBSERVER,
    NS_SEP,
+    RETURN,
 )
 from langgraph._internal._runnable import create_task_in_config_context
 from langgraph._internal._timeout import sync_timeout_unsupported
@@ -733,15 +734,14 @@ async def arun_with_retry(
                if stream:
                    async for _ in task.proc.astream(task.input, config):
                        pass
-                    break
+                    return _return_value(task)
                return await task.proc.ainvoke(task.input, config)
            result = await _arun_with_timeout(
                task, config, resolved_timeout, attempt_ctx, stream=stream
            )
            _finish_timed_attempt(config, attempt_ctx)
            if stream:
-                # if successful, end
-                break
+                return _return_value(task)
            return result
        except ParentCommand as exc:
            ns: str = config[CONF][CONFIG_KEY_CHECKPOINT_NS]
@@ -831,6 +831,12 @@ async def arun_with_retry(
            config = patch_configurable(config, {CONFIG_KEY_RESUMING: True})


+def _return_value(task: PregelExecutableTask) -> Any:
+    # Streaming drains the task instead of returning its result, so a caller
+    # awaiting a `@task` needs the value the task wrote.
+    return next((value for channel, value in task.writes if channel == RETURN), None)
+
+
 def _should_retry_on(retry_policy: RetryPolicy, exc: Exception) -> bool:
    """Check if the given exception should be retried based on the retry policy."""
    if isinstance(retry_policy.retry_on, Sequence):
@@ -43,7 +43,7 @@ from langgraph._internal._typing import MISSING
 from langgraph.constants import TAG_HIDDEN
 from langgraph.errors import GraphBubbleUp, GraphInterrupt, is_invalid_resume
 from langgraph.pregel._algo import Call
-from langgraph.pregel._executor import Submit
+from langgraph.pregel._executor import SKIP_RERAISE_SET, Submit
 from langgraph.pregel._retry import arun_with_retry, run_with_retry
 from langgraph.pregel._task_status import CONTROL_WRITES
 from langgraph.types import (
@@ -68,10 +68,6 @@ EXCLUDED_FRAME_FNAMES = (
    "concurrent/futures/_base.py",
 )

-SKIP_RERAISE_SET: weakref.WeakSet[concurrent.futures.Future | asyncio.Future] = (
-    weakref.WeakSet()
-)
-

 class FuturesDict(Generic[F, E], dict[F, PregelExecutableTask | None]):
    event: E
@@ -239,6 +235,8 @@ class PregelRunner:
                        fut.set_exception(exc)
                        futures.done.add(fut)
                elif reraise and id(exc) not in self._handled_exception_ids:
+                    # let the caller stream this task's result before it raises
+                    yield
                    if tb := exc.__traceback__:
                        while tb.tb_next is not None and any(
                            tb.tb_frame.f_code.co_filename.endswith(name)
@@ -430,6 +428,8 @@ class PregelRunner:
                        fut.set_exception(exc)
                        futures.done.add(fut)
                elif reraise and id(exc) not in self._handled_exception_ids:
+                    # let the caller stream this task's result before it raises
+                    yield
                    if tb := exc.__traceback__:
                        while tb.tb_next is not None and any(
                            tb.tb_frame.f_code.co_filename.endswith(name)
@@ -7,8 +7,9 @@ from uuid import UUID

 from langchain_core.callbacks import BaseCallbackHandler

-from langgraph._internal._constants import NS_SEP
 from langgraph.constants import TAG_NOSTREAM
+from langgraph.errors import GraphDrained, GraphInterrupt
+from langgraph.pregel._messages import graph_namespace
 from langgraph.pregel.protocol import StreamChunk

 try:
@@ -91,12 +92,9 @@ class StreamToolCallHandler(BaseCallbackHandler, _StreamingCallbackHandler):
    ) -> tuple[str, ...] | None:
        """Resolve the namespace this tool call should emit at, or `None` to skip.

-        Mirrors `StreamMessagesHandler.on_chat_model_start`'s namespace
-        derivation: parses `langgraph_checkpoint_ns` (which ends with
-        the `node_name:task_id` of the calling node), drops that
-        trailing segment, and returns the containing subgraph's own
-        namespace. Returns `None` when the call should be silently
-        suppressed:
+        Mirrors `StreamMessagesHandler.on_chat_model_start`: the namespace
+        is that of the graph the tool runs in (`graph_namespace`). Returns
+        `None` when the call should be silently suppressed:

        - `metadata` is missing — handler is attached to a context
          without Pregel routing info.
@@ -109,11 +107,9 @@ class StreamToolCallHandler(BaseCallbackHandler, _StreamingCallbackHandler):
            return None
        if tags and TAG_NOSTREAM in tags:
            return None
-        nskey = metadata.get("langgraph_checkpoint_ns")
-        if not nskey:
-            ns: tuple[str, ...] = ()
-        else:
-            ns = tuple(cast(str, nskey).split(NS_SEP))[:-1]
+        ns = (
+            graph_namespace(metadata) if metadata.get("langgraph_checkpoint_ns") else ()
+        )
        if not self.subgraphs and len(ns) > 0 and ns != self.parent_ns:
            return None
        return ns
@@ -188,6 +184,10 @@ class StreamToolCallHandler(BaseCallbackHandler, _StreamingCallbackHandler):
            return
        ns, tool_call_id, token = info
        self._reset_writer(token)
+        # An interrupted or drained tool is paused, not failed: it runs again
+        # on resume and reports its start and end then.
+        if isinstance(error, (GraphInterrupt, GraphDrained)):
+            return
        self.stream(
            (
                ns,
@@ -97,6 +97,7 @@ from langgraph._internal._runnable import (
    Runnable,
    RunnableLike,
    RunnableSeq,
+    _is_stream_handler,
    coerce_to_runnable,
 )
 from langgraph._internal._timeout import coerce_timeout_policy
@@ -203,11 +204,6 @@ from langgraph.types import (
 from langgraph.typing import ContextT, InputT, OutputT, StateT
 from langgraph.warnings import LangGraphDeprecatedSinceV10

-try:
-    from langchain_core.tracers._streaming import _StreamingCallbackHandler
-except ImportError:
-    _StreamingCallbackHandler = None  # type: ignore
-
 __all__ = ("NodeBuilder", "Pregel")

 _WriteValue = Callable[[Input], Output] | Any
@@ -2880,6 +2876,20 @@ class Pregel(
                    for h in callback_manager.inheritable_handlers
                    if not isinstance(h, StreamMessagesHandlerV2)
                ]
+            if CONFIG_KEY_TASK_ID not in config[CONF]:
+                # Not run as a task (a child invoked with its own thread, say),
+                # this graph's namespace starts at the root, so a caller's
+                # handler would take this graph's events for its own graph's.
+                callback_manager.handlers = [
+                    h
+                    for h in callback_manager.handlers
+                    if not _is_stream_mode_handler(h)
+                ]
+                callback_manager.inheritable_handlers = [
+                    h
+                    for h in callback_manager.inheritable_handlers
+                    if not _is_stream_mode_handler(h)
+                ]
            if "ls_integration" not in callback_manager.metadata:
                callback_manager.add_metadata({"ls_integration": "langgraph"})
            run_manager = callback_manager.on_chain_start(
@@ -2898,9 +2908,9 @@ class Pregel(
                )
            # set up subgraph checkpointing
            config = self._own_checkpoint_config(config)
+            stream_handlers: list[StreamMessagesHandler | StreamToolCallHandler] = []
            # set up messages stream mode
            if "messages" in stream_modes:
-                ns_ = cast(str | None, config[CONF].get(CONFIG_KEY_CHECKPOINT_NS))
                use_stream_messages_v2 = bool(
                    version == "v2" and config[CONF].get(CONFIG_KEY_STREAM_MESSAGES_V2)
                )
@@ -2909,24 +2919,12 @@ class Pregel(
                    if use_stream_messages_v2
                    else StreamMessagesHandler
                )
-                run_manager.inheritable_handlers.append(
-                    messages_handler_cls(
-                        stream.put,
-                        subgraphs,
-                        parent_ns=tuple(ns_.split(NS_SEP)) if ns_ else None,
-                    )
-                )
+                stream_handlers.append(messages_handler_cls(stream.put, subgraphs))

            # set up tools stream mode
            if "tools" in stream_modes:
-                ns_tools = cast(str | None, config[CONF].get(CONFIG_KEY_CHECKPOINT_NS))
-                run_manager.inheritable_handlers.append(
-                    StreamToolCallHandler(
-                        stream.put,
-                        subgraphs,
-                        parent_ns=tuple(ns_tools.split(NS_SEP)) if ns_tools else None,
-                    )
-                )
+                stream_handlers.append(StreamToolCallHandler(stream.put, subgraphs))
+            run_manager.inheritable_handlers.extend(stream_handlers)

            # set up custom stream mode
            if "custom" in stream_modes:
@@ -3009,6 +3007,10 @@ class Pregel(
                cache_policy=self.cache_policy,
                has_graph_lifecycle_callbacks=bool(graph_callback_manager.handlers),
            ) as loop:
+                # Known only now: the loop numbers the namespace of every
+                # subgraph a task runs after its first.
+                for handler in stream_handlers:
+                    handler.parent_ns = loop.checkpoint_ns
                emit_graph_lifecycle_events(loop)
                # create runner
                runner = PregelRunner(
@@ -3291,6 +3293,20 @@ class Pregel(
                    for h in callback_manager.inheritable_handlers
                    if not isinstance(h, StreamMessagesHandlerV2)
                ]
+            if CONFIG_KEY_TASK_ID not in config[CONF]:
+                # Not run as a task (a child invoked with its own thread, say),
+                # this graph's namespace starts at the root, so a caller's
+                # handler would take this graph's events for its own graph's.
+                callback_manager.handlers = [
+                    h
+                    for h in callback_manager.handlers
+                    if not _is_stream_mode_handler(h)
+                ]
+                callback_manager.inheritable_handlers = [
+                    h
+                    for h in callback_manager.inheritable_handlers
+                    if not _is_stream_mode_handler(h)
+                ]
            if "ls_integration" not in callback_manager.metadata:
                callback_manager.add_metadata({"ls_integration": "langgraph"})
            run_manager = await callback_manager.on_chain_start(
@@ -3304,18 +3320,10 @@ class Pregel(
                run_id=run_manager.run_id,
            )
            # if running from astream_log() run each proc with streaming
-            do_stream = (
-                next(
-                    (
-                        True
-                        for h in run_manager.handlers
-                        if isinstance(h, _StreamingCallbackHandler)
-                        and not isinstance(h, StreamMessagesHandler)
-                    ),
-                    False,
-                )
-                if _StreamingCallbackHandler is not None
-                else False
+            do_stream = any(
+                _is_stream_handler(h)
+                and not isinstance(h, (StreamMessagesHandler, StreamToolCallHandler))
+                for h in run_manager.handlers
            )
            if checkpointer is None and durability is not None:
                warnings.warn(
@@ -3323,10 +3331,9 @@ class Pregel(
                )
            # set up subgraph checkpointing
            config = self._own_checkpoint_config(config)
+            stream_handlers: list[StreamMessagesHandler | StreamToolCallHandler] = []
            # set up messages stream mode
            if "messages" in stream_modes:
-                # namespace can be None in a root level graph?
-                ns_ = cast(str | None, config[CONF].get(CONFIG_KEY_CHECKPOINT_NS))
                use_stream_messages_v2 = bool(
                    version == "v2" and config[CONF].get(CONFIG_KEY_STREAM_MESSAGES_V2)
                )
@@ -3335,24 +3342,12 @@ class Pregel(
                    if use_stream_messages_v2
                    else StreamMessagesHandler
                )
-                run_manager.inheritable_handlers.append(
-                    messages_handler_cls(
-                        stream_put,
-                        subgraphs,
-                        parent_ns=tuple(ns_.split(NS_SEP)) if ns_ else None,
-                    )
-                )
+                stream_handlers.append(messages_handler_cls(stream_put, subgraphs))

            # set up tools stream mode
            if "tools" in stream_modes:
-                ns_tools = cast(str | None, config[CONF].get(CONFIG_KEY_CHECKPOINT_NS))
-                run_manager.inheritable_handlers.append(
-                    StreamToolCallHandler(
-                        stream_put,
-                        subgraphs,
-                        parent_ns=tuple(ns_tools.split(NS_SEP)) if ns_tools else None,
-                    )
-                )
+                stream_handlers.append(StreamToolCallHandler(stream_put, subgraphs))
+            run_manager.inheritable_handlers.extend(stream_handlers)

            # set up custom stream mode
            def stream_writer(c: Any) -> None:
@@ -3461,6 +3456,10 @@ class Pregel(
                cache_policy=self.cache_policy,
                has_graph_lifecycle_callbacks=bool(graph_callback_manager.handlers),
            ) as loop:
+                # Known only now: the loop numbers the namespace of every
+                # subgraph a task runs after its first.
+                for handler in stream_handlers:
+                    handler.parent_ns = loop.checkpoint_ns
                await aemit_graph_lifecycle_events(loop)
                # create runner
                runner = PregelRunner(
@@ -4458,6 +4457,10 @@ def _coerce_checkpoint_values(payload: Any, mapper: Callable[[Any], Any]) -> Non
        payload["values"] = mapper(payload["values"])


+def _is_stream_mode_handler(handler: object) -> bool:
+    return isinstance(handler, (StreamMessagesHandler, StreamToolCallHandler))
+
+
 def _resolve_parent_ns(
    graph_config: RunnableConfig | None, call_config: RunnableConfig | None
 ) -> tuple[str, ...]:
@@ -847,6 +847,11 @@ class RemoteGraph(PregelProtocol):
            # filter for what was actually requested
            if mode not in requested:
                continue
+            # subgraph events may have been requested only for the parent stream.
+            # messages are exempt: the server dedupes them across namespaces, so
+            # dropping them here would also drop the root-level message
+            if not subgraphs and NS_SEP in chunk.event and mode != "messages":
+                continue

            if chunk.event.startswith("messages"):
                chunk = chunk._replace(data=tuple(chunk.data))
@@ -997,6 +1002,11 @@ class RemoteGraph(PregelProtocol):
            # filter for what was actually requested
            if mode not in requested:
                continue
+            # subgraph events may have been requested only for the parent stream.
+            # messages are exempt: the server dedupes them across namespaces, so
+            # dropping them here would also drop the root-level message
+            if not subgraphs and NS_SEP in chunk.event and mode != "messages":
+                continue

            if chunk.event.startswith("messages"):
                chunk = chunk._replace(data=tuple(chunk.data))
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"

 [project]
 name = "langgraph"
-version = "1.2.17"
+version = "1.2.19"
 description = "Building stateful, multi-actor applications with LLMs"
 authors = []
 requires-python = ">=3.10"
@@ -133,6 +133,11 @@
            "ToolNode"
          ],
          "name": "tools"
+        },
+        "metadata": {
+          "__tools": [
+            "search_api"
+          ]
        }
      },
      {
@@ -221,6 +226,11 @@
            "ToolNode"
          ],
          "name": "tools"
+        },
+        "metadata": {
+          "__tools": [
+            "search_api"
+          ]
        }
      },
      {
@@ -20,6 +20,7 @@ from langgraph.errors import EmptyChannelError, InvalidUpdateError
 from langgraph.graph import START, StateGraph
 from langgraph.graph.message import _messages_delta_reducer
 from langgraph.graph.state import _get_channel
+from langgraph.pregel._checkpoint import delta_channels_to_snapshot
 from langgraph.types import Overwrite

 pytestmark = pytest.mark.anyio
@@ -342,6 +343,26 @@ def test_delta_channel_checkpoint_returns_missing() -> None:
 # ---------------------------------------------------------------------------


+@pytest.mark.parametrize("frequency", [None, 50, 1000])
+def test_delta_channel_snapshot_frequency(frequency: int | None) -> None:
+    spec = (
+        DeltaChannel(_messages_delta_reducer)
+        if frequency is None
+        else DeltaChannel(_messages_delta_reducer, snapshot_frequency=frequency)
+    )
+    expected = 100 if frequency is None else frequency
+    assert spec.snapshot_frequency == expected
+    channel = spec.from_checkpoint(MISSING)
+    channel.update([HumanMessage(content="hi", id="h1")])
+    assert channel.copy().snapshot_frequency == expected
+    for updates in (expected - 1, expected):
+        assert delta_channels_to_snapshot(
+            {"messages": channel},
+            {"messages": (updates, updates)},
+            {"messages": 1},
+        ) == ({"messages"} if updates == expected else set())
+
+
 def test_delta_channel_snapshot_version_based() -> None:
    """Snapshots fire when a channel accumulates `snapshot_frequency` updates.

@@ -4346,6 +4346,25 @@ def test_enum_node_names():
    assert graph.invoke({"foo": "hello"}) == {"foo": "hello", "bar": "hello!"}


+@pytest.mark.parametrize("stream_mode", ["tasks", "debug"])
+def test_failing_task_result_is_streamed_before_the_error(stream_mode: str) -> None:
+    class State(TypedDict):
+        x: str
+
+    def failing(state: State) -> State:
+        raise ValueError("boom")
+
+    graph = StateGraph(State).add_node("failing", failing).add_edge(START, "failing")
+    errors = []
+    with pytest.raises(ValueError, match="boom"):
+        for chunk in graph.compile().stream({"x": ""}, stream_mode=stream_mode):
+            payload = chunk["payload"] if stream_mode == "debug" else chunk
+            if "error" in payload:
+                errors.append(payload["error"])
+
+    assert [type(error) for error in errors] == [ValueError]
+
+
 def test_debug_retry(sync_checkpointer: BaseCheckpointSaver):
    class State(TypedDict):
        messages: Annotated[list[str], operator.add]
@@ -4410,6 +4429,52 @@ def test_debug_retry(sync_checkpointer: BaseCheckpointSaver):
        assert stream_parent_conf == history_parent_conf


+def test_interrupt_after_streams_the_checkpoint_it_pauses_on(
+    sync_checkpointer: BaseCheckpointSaver,
+) -> None:
+    class State(TypedDict):
+        x: int
+
+    graph = (
+        StateGraph(State)
+        .add_node("one", lambda state: {"x": 1})
+        .add_node("two", lambda state: {"x": 2})
+        .add_edge(START, "one")
+        .add_edge("one", "two")
+        .compile(checkpointer=sync_checkpointer, interrupt_after=["one"])
+    )
+    config = {"configurable": {"thread_id": "1"}}
+
+    checkpoints = list(graph.stream({"x": 0}, config, stream_mode="checkpoints"))
+
+    state = graph.get_state(config)
+    assert checkpoints[-1]["config"] == state.config
+    assert checkpoints[-1]["next"] == ["two"]
+
+
+def test_recursion_limit_streams_the_last_checkpoint_saved(
+    sync_checkpointer: BaseCheckpointSaver,
+) -> None:
+    class State(TypedDict):
+        x: int
+
+    graph = (
+        StateGraph(State)
+        .add_node("loop", lambda state: {"x": state["x"] + 1})
+        .add_edge(START, "loop")
+        .add_edge("loop", "loop")
+        .compile(checkpointer=sync_checkpointer)
+    )
+    config = {"configurable": {"thread_id": "1"}, "recursion_limit": 3}
+    checkpoints = []
+
+    with pytest.raises(GraphRecursionError):
+        for chunk in graph.stream({"x": 0}, config, stream_mode="checkpoints"):
+            checkpoints.append(chunk)
+
+    assert checkpoints[-1]["config"] == graph.get_state(config).config
+
+
 def test_debug_subgraphs(
    sync_checkpointer: BaseCheckpointSaver, durability: Durability
 ):
@@ -6880,6 +6945,22 @@ def test_named_tasks_functional() -> None:
    ]


+def test_invoke_tags_reach_a_node_three_subgraphs_deep_once() -> None:
+    class State(TypedDict):
+        copies: int
+
+    def leaf(state: State, config: RunnableConfig) -> State:
+        return {"copies": config["tags"].count("my-tag")}
+
+    graph = StateGraph(State).add_node("leaf", leaf).add_edge(START, "leaf").compile()
+    for _ in range(3):
+        graph = (
+            StateGraph(State).add_node("sub", graph).add_edge(START, "sub").compile()
+        )
+
+    assert graph.invoke({"copies": 0}, {"tags": ["my-tag"]}) == {"copies": 1}
+
+
 def test_tags_stream_mode_messages() -> None:
    model = GenericFakeChatModel(messages=iter(["foo"]), tags=["meow"])
    graph = (
@@ -8869,6 +8950,39 @@ def test_subgraph_streaming_sync() -> None:
    assert result["num_chunks"] == 9


+def test_subgraph_streaming_node_output_messages_sync() -> None:
+    """Messages returned by a node (not streamed by an LLM) are emitted when a
+    graph is explicitly streamed with `stream_mode="messages"` inside a node."""
+
+    def respond(state: MessagesState) -> dict:
+        return {"messages": [AIMessage("hi there", id="ai1")]}
+
+    subgraph = (
+        StateGraph(MessagesState)
+        .add_node("respond", respond)
+        .add_edge(START, "respond")
+        .compile()
+    )
+    msgs = {"messages": [("user", "hello")]}
+
+    top_level = [msg for msg, _ in subgraph.stream(msgs, stream_mode="messages")]
+
+    def parent_node(state: MessagesState, config: RunnableConfig) -> dict:
+        nonlocal in_node
+        in_node = [
+            msg for msg, _ in subgraph.stream(msgs, config, stream_mode="messages")
+        ]
+        return {}
+
+    in_node: list = []
+    StateGraph(MessagesState).add_node("parent", parent_node).add_edge(
+        START, "parent"
+    ).compile().invoke(msgs)
+
+    assert [m.content for m in top_level] == ["hi there"]
+    assert [m.content for m in in_node] == ["hi there"]
+
+
 def test_get_graph_nonterminal_last_step_source(snapshot: SnapshotAssertion) -> None:
    class State(TypedDict):
        messages: list[str]
@@ -5809,6 +5809,60 @@ async def test_store_injected_async(
    )  # still overwriting the same one


+@pytest.mark.parametrize("stream_mode", ["tasks", "debug"])
+async def test_failing_task_result_is_streamed_before_the_error(
+    stream_mode: str,
+) -> None:
+    class State(TypedDict):
+        x: str
+
+    async def failing(state: State) -> State:
+        raise ValueError("boom")
+
+    graph = StateGraph(State).add_node("failing", failing).add_edge(START, "failing")
+    errors = []
+    with pytest.raises(ValueError, match="boom"):
+        async for chunk in graph.compile().astream({"x": ""}, stream_mode=stream_mode):
+            payload = chunk["payload"] if stream_mode == "debug" else chunk
+            if "error" in payload:
+                errors.append(payload["error"])
+
+    assert [type(error) for error in errors] == [ValueError]
+
+
+@pytest.mark.parametrize(
+    ("parallel", "stream_mode"), [(False, "custom"), (True, "values")]
+)
+async def test_graph_error_handler_recovers_on_the_executor_path(
+    parallel: bool, stream_mode: str
+) -> None:
+    class State(TypedDict):
+        x: str
+
+    async def failing(state: State) -> State:
+        raise ValueError("boom")
+
+    async def handler(state: State) -> Command:
+        return Command(update={"x": "handled"}, goto=END)
+
+    builder = (
+        StateGraph(State)
+        .add_node("failing", failing, error_handler=handler)
+        .add_edge(START, "failing")
+    )
+    if parallel:
+        builder.add_node("sibling", lambda state: {}).add_edge(START, "sibling")
+
+    chunks = [
+        chunk
+        async for chunk in builder.compile().astream(
+            {"x": ""}, stream_mode=[stream_mode, "values"]
+        )
+    ]
+
+    assert [c[-1] for c in chunks if c[0] == "values"][-1] == {"x": "handled"}
+
+
 async def test_debug_retry(async_checkpointer: BaseCheckpointSaver):
    class State(TypedDict):
        messages: Annotated[list[str], operator.add]
@@ -5875,6 +5929,55 @@ async def test_debug_retry(async_checkpointer: BaseCheckpointSaver):
        assert stream_parent_conf == history_parent_conf


+async def test_interrupt_after_streams_the_checkpoint_it_pauses_on(
+    async_checkpointer: BaseCheckpointSaver,
+) -> None:
+    class State(TypedDict):
+        x: int
+
+    graph = (
+        StateGraph(State)
+        .add_node("one", lambda state: {"x": 1})
+        .add_node("two", lambda state: {"x": 2})
+        .add_edge(START, "one")
+        .add_edge("one", "two")
+        .compile(checkpointer=async_checkpointer, interrupt_after=["one"])
+    )
+    config = {"configurable": {"thread_id": "1"}}
+
+    checkpoints = [
+        chunk
+        async for chunk in graph.astream({"x": 0}, config, stream_mode="checkpoints")
+    ]
+
+    state = await graph.aget_state(config)
+    assert checkpoints[-1]["config"] == state.config
+    assert checkpoints[-1]["next"] == ["two"]
+
+
+async def test_recursion_limit_streams_the_last_checkpoint_saved(
+    async_checkpointer: BaseCheckpointSaver,
+) -> None:
+    class State(TypedDict):
+        x: int
+
+    graph = (
+        StateGraph(State)
+        .add_node("loop", lambda state: {"x": state["x"] + 1})
+        .add_edge(START, "loop")
+        .add_edge("loop", "loop")
+        .compile(checkpointer=async_checkpointer)
+    )
+    config = {"configurable": {"thread_id": "1"}, "recursion_limit": 3}
+    checkpoints = []
+
+    with pytest.raises(GraphRecursionError):
+        async for chunk in graph.astream({"x": 0}, config, stream_mode="checkpoints"):
+            checkpoints.append(chunk)
+
+    assert checkpoints[-1]["config"] == (await graph.aget_state(config)).config
+
+
 async def test_debug_subgraphs(
    async_checkpointer: BaseCheckpointSaver, durability: Durability
 ):
@@ -6731,6 +6834,31 @@ async def test_multiple_updates() -> None:
    ]


+@NEEDS_CONTEXTVARS
+async def test_task_in_subgraph_node_returns_its_value_with_tools_mode() -> None:
+    class State(TypedDict):
+        out: int | None
+
+    @task
+    async def double(x: int) -> int:
+        return x * 2
+
+    async def node(state: State) -> State:
+        return {"out": await double(21)}
+
+    inner = StateGraph(State).add_node("node", node).add_edge(START, "node").compile()
+    graph = (
+        StateGraph(State).add_node("inner", inner).add_edge(START, "inner").compile()
+    )
+
+    chunks = [
+        chunk
+        async for chunk in graph.astream({"out": None}, stream_mode=["values", "tools"])
+    ]
+
+    assert chunks[-1] == ("values", {"out": 42})
+
+
@NEEDS_CONTEXTVARS
 async def test_falsy_return_from_task(async_checkpointer: BaseCheckpointSaver) -> None:
    """Test with a falsy return from a task."""
@@ -7495,6 +7623,40 @@ async def test_entrypoint_from_async_generator() -> None:
            yield "b"


+@NEEDS_CONTEXTVARS
+@pytest.mark.parametrize("timeout", [None, 30])
+@pytest.mark.parametrize("version", ["v1", "v2"])
+async def test_awaited_task_returns_its_value_under_astream_events(
+    version: Literal["v1", "v2"], timeout: int | None
+) -> None:
+    class State(TypedDict):
+        doubled: int
+        zeroed: int
+
+    @task(timeout=timeout)
+    async def double(x: int) -> int:
+        return x * 2
+
+    @task(timeout=timeout)
+    async def zero() -> int:
+        return 0
+
+    async def node(state: State) -> State:
+        return {"doubled": await double(21), "zeroed": await zero()}
+
+    graph = StateGraph(State).add_node("node", node).add_edge(START, "node").compile()
+
+    outputs = [
+        event["data"]["output"]
+        async for event in graph.astream_events(
+            {"doubled": 0, "zeroed": 1}, version=version
+        )
+        if event["event"] == "on_chain_end" and event["name"] == "node"
+    ]
+
+    assert outputs == [{"doubled": 42, "zeroed": 0}]
+
+
@NEEDS_CONTEXTVARS
 async def test_named_tasks_functional() -> None:
    class Foo:
@@ -9341,6 +9503,44 @@ async def test_subgraph_streaming_async() -> None:
    assert result["num_chunks"] == 9


+async def test_subgraph_streaming_node_output_messages_async() -> None:
+    """Messages returned by a node (not streamed by an LLM) are emitted when a
+    graph is explicitly streamed with `stream_mode="messages"` inside a node."""
+
+    async def respond(state: MessagesState) -> dict:
+        return {"messages": [AIMessage("hi there", id="ai1")]}
+
+    subgraph = (
+        StateGraph(MessagesState)
+        .add_node("respond", respond)
+        .add_edge(START, "respond")
+        .compile()
+    )
+    msgs = {"messages": [("user", "hello")]}
+
+    top_level = [msg async for msg, _ in subgraph.astream(msgs, stream_mode="messages")]
+
+    async def parent_node(state: MessagesState, config: RunnableConfig) -> dict:
+        nonlocal in_node
+        in_node = [
+            msg
+            async for msg, _ in subgraph.astream(msgs, config, stream_mode="messages")
+        ]
+        return {}
+
+    in_node: list = []
+    await (
+        StateGraph(MessagesState)
+        .add_node("parent", parent_node)
+        .add_edge(START, "parent")
+        .compile()
+        .ainvoke(msgs)
+    )
+
+    assert [m.content for m in top_level] == ["hi there"]
+    assert [m.content for m in in_node] == ["hi there"]
+
+
@NEEDS_CONTEXTVARS
 async def test_null_resume_disallowed_with_multiple_interrupts(
    async_checkpointer: BaseCheckpointSaver,
@@ -16,9 +16,11 @@ from langgraph_sdk.schema import StreamPart
 from pydantic import BaseModel
 from typing_extensions import TypedDict

+from langgraph._internal._constants import CONFIG_KEY_STREAM
 from langgraph.errors import GraphInterrupt
 from langgraph.graph import END, START, MessagesState, StateGraph, add_messages
 from langgraph.pregel import Pregel
+from langgraph.pregel.protocol import StreamProtocol
 from langgraph.pregel.remote import RemoteGraph
 from langgraph.types import Interrupt, StateSnapshot
 from tests.any_str import AnyStr
@@ -863,6 +865,87 @@ async def test_astream_subgraphs_keeps_caller_namespace():
    assert stream_parts == _CALLER_PREFIXED


+# Subgraph events requested only on behalf of a streaming parent graph
+_PARENT_STREAMED_PARTS = [
+    StreamPart(event="updates|sub:abc", data={"inner": {"chunk": "inner"}}),
+    StreamPart(event="messages|sub:abc", data=[{"content": "token"}, {}]),
+    StreamPart(event="updates", data={"sub": {"chunk": "root"}}),
+]
+
+
+def _parent_streamed_config(parent_parts: list) -> RunnableConfig:
+    return {
+        "configurable": {
+            "thread_id": "thread_1",
+            "checkpoint_ns": "outer:123",
+            CONFIG_KEY_STREAM: StreamProtocol(
+                parent_parts.append, {"updates", "messages"}
+            ),
+        }
+    }
+
+
+def test_stream_without_subgraphs_skips_parent_requested_subgraph_events():
+    mock_sync_client = MagicMock()
+    mock_sync_client.runs.stream.return_value = _PARENT_STREAMED_PARTS
+    remote_pregel = RemoteGraph("test_graph_id", sync_client=mock_sync_client)
+
+    for stream_mode, expected in [
+        ("updates", [{"sub": {"chunk": "root"}}]),
+        # messages are not filtered: the server dedupes them across namespaces
+        ("messages", [({"content": "token"}, {})]),
+    ]:
+        parent_parts: list = []
+        stream_parts = list(
+            remote_pregel.stream(
+                {"input": "data"},
+                _parent_streamed_config(parent_parts),
+                stream_mode=stream_mode,
+            )
+        )
+
+        assert stream_parts == expected
+        # subgraph events are still requested and forwarded to the parent
+        assert mock_sync_client.runs.stream.call_args.kwargs["stream_subgraphs"]
+        assert [ns for ns, _, _ in parent_parts] == [
+            ("outer:123", "sub:abc"),
+            ("outer:123", "sub:abc"),
+            ("outer:123",),
+        ]
+
+
+async def test_astream_without_subgraphs_skips_parent_requested_subgraph_events():
+    mock_async_client = MagicMock()
+    async_iter = MagicMock()
+    async_iter.__aiter__.return_value = _PARENT_STREAMED_PARTS
+    mock_async_client.runs.stream.return_value = async_iter
+    remote_pregel = RemoteGraph("test_graph_id", client=mock_async_client)
+
+    for stream_mode, expected in [
+        ("updates", [{"sub": {"chunk": "root"}}]),
+        # messages are not filtered: the server dedupes them across namespaces
+        ("messages", [({"content": "token"}, {})]),
+    ]:
+        parent_parts: list = []
+        stream_parts = [
+            part
+            async for part in remote_pregel.astream(
+                {"input": "data"},
+                _parent_streamed_config(parent_parts),
+                stream_mode=stream_mode,
+            )
+        ]
+
+        assert stream_parts == expected
+        # subgraph events are still requested and forwarded to the parent
+        assert mock_async_client.runs.stream.call_args.kwargs["stream_subgraphs"]
+        assert [ns for ns, _, _ in parent_parts] == [
+            ("outer:123", "sub:abc"),
+            ("outer:123", "sub:abc"),
+            ("outer:123",),
+        ]
+
+
 def test_invoke():
    # set up test
    mock_sync_client = MagicMock()
@@ -2097,6 +2097,47 @@ def test_graph_error_handler_can_route_with_command():
    assert result["foo"] == "handled_next"


+# Each case runs the failing node on the executor path instead of the
+# single-task fast path.
+@pytest.mark.parametrize(
+    ("parallel", "stream_mode", "subgraphs"),
+    [
+        (False, "custom", False),
+        (False, "messages", False),
+        (False, "values", True),
+        (True, "values", False),
+    ],
+)
+def test_graph_error_handler_recovers_on_the_executor_path(
+    parallel: bool, stream_mode: str, subgraphs: bool
+) -> None:
+    class State(TypedDict):
+        x: str
+
+    def failing(state: State) -> State:
+        raise ValueError("boom")
+
+    def handler(state: State) -> Command:
+        return Command(update={"x": "handled"}, goto=END)
+
+    builder = (
+        StateGraph(State)
+        .add_node("failing", failing, error_handler=handler)
+        .add_edge(START, "failing")
+    )
+    if parallel:
+        builder.add_node("sibling", lambda state: {}).add_edge(START, "sibling")
+    graph = builder.compile()
+
+    chunks = list(
+        graph.stream(
+            {"x": ""}, stream_mode=[stream_mode, "values"], subgraphs=subgraphs
+        )
+    )
+
+    assert [c[-1] for c in chunks if c[-2] == "values"][-1] == {"x": "handled"}
+
+
 def test_graph_error_handler_failure_fails_run():
    class State(TypedDict):
        foo: str
@@ -0,0 +1,308 @@
+import sys
+from typing import Any
+
+import pytest
+from langchain_core.language_models.fake_chat_models import GenericFakeChatModel
+from langchain_core.messages import AIMessage
+from langchain_core.tools import tool
+
+from langgraph.func import entrypoint, task
+from langgraph.graph import START, MessagesState, StateGraph
+from langgraph.graph.message import push_message
+from langgraph.graph.state import CompiledStateGraph
+
+pytestmark = pytest.mark.anyio
+
+NEEDS_CONTEXTVARS = pytest.mark.skipif(
+    sys.version_info < (3, 11),
+    reason="Python 3.11+ is required for async contextvars support",
+)
+
+
+@tool
+def echo(text: str) -> str:
+    """Echo the text."""
+    return text
+
+
+def _one_node_graph(node: Any) -> CompiledStateGraph:
+    return (
+        StateGraph(MessagesState)
+        .add_node(node)
+        .add_edge(START, node.__name__)
+        .compile()
+    )
+
+
+def _chat_and_echo(state: MessagesState) -> dict:
+    echo.invoke({"text": "done"})
+    return {"messages": [GenericFakeChatModel(messages=iter(["one two"])).invoke("hi")]}
+
+
+async def _achat_and_echo(state: MessagesState) -> dict:
+    await echo.ainvoke({"text": "done"})
+    model = GenericFakeChatModel(messages=iter(["one two"]))
+    return {"messages": [await model.ainvoke("hi")]}
+
+
+def _segment_names(ns: tuple[str, ...]) -> tuple[str, ...]:
+    return tuple(segment.split(":")[0] for segment in ns)
+
+
+def _summary(part: dict) -> tuple[tuple[str, ...], str]:
+    if part["type"] == "messages":
+        return _segment_names(part["ns"]), part["data"][0].content
+    return _segment_names(part["ns"]), part["data"]["event"]
+
+
+_CHAT_AND_ECHO_EVENTS = [
+    ((), "tool-started"),
+    ((), "tool-finished"),
+    ((), "one"),
+    ((), " "),
+    ((), "two"),
+]
+
+_CHILD_CONFIGS = pytest.mark.parametrize(
+    "child_config",
+    [
+        None,
+        {"configurable": {"thread_id": "child"}},
+        {"configurable": {"thread_id": "parent"}},
+    ],
+    ids=["no_config", "own_thread", "caller_thread"],
+)
+
+
+_TASK_CALLERS = pytest.mark.parametrize(
+    "nested", [False, True], ids=["from_entrypoint", "from_task_in_task"]
+)
+
+
+@_TASK_CALLERS
+@pytest.mark.parametrize("subgraphs", [False, True])
+def test_task_events_stream_under_the_graph_namespace(
+    nested: bool, subgraphs: bool
+) -> None:
+    @task
+    def chat_and_echo() -> None:
+        _chat_and_echo({"messages": []})
+
+    @task
+    def outer() -> None:
+        chat_and_echo().result()
+
+    @entrypoint()
+    def workflow(inputs: dict) -> None:
+        (outer() if nested else chat_and_echo()).result()
+
+    parts = workflow.stream(
+        {}, stream_mode=["messages", "tools"], subgraphs=subgraphs, version="v2"
+    )
+
+    assert [_summary(part) for part in parts] == _CHAT_AND_ECHO_EVENTS
+
+
+@NEEDS_CONTEXTVARS
+@_TASK_CALLERS
+@pytest.mark.parametrize("subgraphs", [False, True])
+async def test_task_events_stream_under_the_graph_namespace_async(
+    nested: bool, subgraphs: bool
+) -> None:
+    @task
+    async def chat_and_echo() -> None:
+        await _achat_and_echo({"messages": []})
+
+    @task
+    async def outer() -> None:
+        await chat_and_echo()
+
+    @entrypoint()
+    async def workflow(inputs: dict) -> None:
+        await (outer() if nested else chat_and_echo())
+
+    parts = workflow.astream(
+        {}, stream_mode=["messages", "tools"], subgraphs=subgraphs, version="v2"
+    )
+
+    assert [_summary(part) async for part in parts] == _CHAT_AND_ECHO_EVENTS
+
+
+def test_task_events_stream_under_the_namespace_of_their_subgraph() -> None:
+    @task
+    def chat_and_echo() -> None:
+        _chat_and_echo({"messages": []})
+
+    def node(state: MessagesState) -> dict:
+        chat_and_echo().result()
+        return {}
+
+    sub = _one_node_graph(node)
+    parent = StateGraph(MessagesState).add_node("sub", sub).add_edge(START, "sub")
+
+    parts = parent.compile().stream(
+        {"messages": []},
+        stream_mode=["messages", "tools"],
+        subgraphs=True,
+        version="v2",
+    )
+
+    assert [_summary(part) for part in parts] == [
+        (("sub",), event) for _, event in _CHAT_AND_ECHO_EVENTS
+    ]
+
+
+@_CHILD_CONFIGS
+def test_child_graph_streams_only_to_the_node_streaming_it(
+    child_config: dict | None,
+) -> None:
+    child = _one_node_graph(_chat_and_echo)
+    received = []
+
+    def node(state: MessagesState) -> dict:
+        received.extend(
+            child.stream(
+                {"messages": []}, child_config, stream_mode=["messages", "tools"]
+            )
+        )
+        return {}
+
+    parts = _one_node_graph(node).stream(
+        {"messages": []},
+        {"configurable": {"thread_id": "parent"}},
+        stream_mode=["messages", "tools"],
+    )
+
+    assert list(parts) == []
+    assert len(received) == len(_CHAT_AND_ECHO_EVENTS)
+
+
+@NEEDS_CONTEXTVARS
+@_CHILD_CONFIGS
+async def test_child_graph_streams_only_to_the_node_streaming_it_async(
+    child_config: dict | None,
+) -> None:
+    child = _one_node_graph(_achat_and_echo)
+    received = []
+
+    async def node(state: MessagesState) -> dict:
+        stream = child.astream(
+            {"messages": []}, child_config, stream_mode=["messages", "tools"]
+        )
+        received.extend([part async for part in stream])
+        return {}
+
+    parts = _one_node_graph(node).astream(
+        {"messages": []},
+        {"configurable": {"thread_id": "parent"}},
+        stream_mode=["messages", "tools"],
+    )
+
+    assert [part async for part in parts] == []
+    assert len(received) == len(_CHAT_AND_ECHO_EVENTS)
+
+
+@pytest.mark.parametrize(
+    "child_config",
+    [
+        {"configurable": {"thread_id": "child"}},
+        {"configurable": {"thread_id": "parent"}},
+    ],
+    ids=["own_thread", "caller_thread"],
+)
+def test_child_graph_on_its_own_thread_skips_a_caller_streaming_subgraphs(
+    child_config: dict,
+) -> None:
+    child = _one_node_graph(_chat_and_echo)
+
+    def node(state: MessagesState) -> dict:
+        child.invoke({"messages": []}, child_config)
+        return {}
+
+    parts = _one_node_graph(node).stream(
+        {"messages": []},
+        {"configurable": {"thread_id": "parent"}},
+        stream_mode=["messages", "tools"],
+        subgraphs=True,
+    )
+
+    assert list(parts) == []
+
+
+def test_node_gets_the_events_of_every_subgraph_it_streams() -> None:
+    sub = _one_node_graph(_chat_and_echo)
+    counts = []
+
+    def node(state: MessagesState) -> dict:
+        for _ in range(2):
+            stream = sub.stream({"messages": []}, stream_mode=["messages", "tools"])
+            counts.append(len(list(stream)))
+        return {}
+
+    _one_node_graph(node).invoke({"messages": []})
+
+    assert counts == [len(_CHAT_AND_ECHO_EVENTS)] * 2
+
+
+@NEEDS_CONTEXTVARS
+async def test_node_gets_the_events_of_every_subgraph_it_streams_async() -> None:
+    sub = _one_node_graph(_achat_and_echo)
+    counts = []
+
+    async def node(state: MessagesState) -> dict:
+        for _ in range(2):
+            stream = sub.astream({"messages": []}, stream_mode=["messages", "tools"])
+            counts.append(len([part async for part in stream]))
+        return {}
+
+    await _one_node_graph(node).ainvoke({"messages": []})
+
+    assert counts == [len(_CHAT_AND_ECHO_EVENTS)] * 2
+
+
+def _push(state: MessagesState) -> dict:
+    push_message(AIMessage(id="pushed", content="hi"), state_key=None)
+    return {}
+
+
+def _namespaces(graph: CompiledStateGraph, subgraphs: bool) -> list[tuple[str, ...]]:
+    parts = graph.stream(
+        {"messages": []}, stream_mode="messages", subgraphs=subgraphs, version="v2"
+    )
+    return [_segment_names(part["ns"]) for part in parts]
+
+
+def _streams_pushing_graph(received: list) -> Any:
+    pushing = _one_node_graph(_push)
+
+    def node(state: MessagesState) -> dict:
+        for message, _ in pushing.stream({"messages": []}, stream_mode="messages"):
+            received.append(message.id)
+        return {}
+
+    return node
+
+
+def test_pushed_message_streams_under_the_namespace_of_its_graph() -> None:
+    pushing = _one_node_graph(_push)
+    parent = StateGraph(MessagesState).add_node("sub", pushing).add_edge(START, "sub")
+
+    assert _namespaces(pushing, subgraphs=True) == [()]
+    assert _namespaces(parent.compile(), subgraphs=False) == []
+    assert _namespaces(parent.compile(), subgraphs=True) == [("sub",)]
+
+
+def test_pushed_message_streams_to_the_node_that_streams_its_graph() -> None:
+    received: list[str] = []
+    graph = _one_node_graph(_streams_pushing_graph(received))
+
+    assert _namespaces(graph, subgraphs=False) == []
+    assert received == ["pushed"]
+
+
+def test_pushed_message_streams_to_every_stream_that_takes_it() -> None:
+    received: list[str] = []
+    graph = _one_node_graph(_streams_pushing_graph(received))
+
+    assert _namespaces(graph, subgraphs=True) == [("node",)]
+    assert received == ["pushed"]
@@ -13,13 +13,17 @@ from typing import Annotated, Any
 import pytest
 from langchain_core.messages import AIMessage
 from langchain_core.tools import tool
+from langgraph.checkpoint.memory import InMemorySaver
 from langgraph.prebuilt import ToolNode, ToolRuntime
 from typing_extensions import TypedDict

 from langgraph.constants import END, START
+from langgraph.errors import GraphDrained
 from langgraph.graph import StateGraph
 from langgraph.graph.message import add_messages
 from langgraph.pregel._tools import _tool_call_writer
+from langgraph.runtime import RunControl
+from langgraph.types import Command, interrupt


 class _State(TypedDict):
@@ -54,14 +58,14 @@ def _caller_async(tool_name: str, tool_args: dict[str, Any], tc_id: str = "tc1")
    return caller


-def _build_graph(caller, tools) -> Any:
+def _build_graph(caller, tools, checkpointer=None) -> Any:
    sg = StateGraph(_State)
    sg.add_node("caller", caller)
    sg.add_node("tools", ToolNode(tools))
    sg.add_edge(START, "caller")
    sg.add_edge("caller", "tools")
    sg.add_edge("tools", END)
-    return sg.compile()
+    return sg.compile(checkpointer=checkpointer)


 def _tool_events(stream) -> list[tuple[tuple[str, ...], dict]]:
@@ -146,6 +150,105 @@ class TestSyncGraphSyncTool:
        assert kinds == ["tool-started", "tool-error"]
        assert events[1][1]["message"] == "nope"

+    def test_interrupt_in_tool_is_not_a_tool_error(self) -> None:
+        @tool
+        def ask() -> str:
+            """asks."""
+            return interrupt("ok?")
+
+        graph = _build_graph(_caller_sync("ask", {}), [ask], InMemorySaver())
+        config = {"configurable": {"thread_id": "1"}}
+        paused = _tool_events(
+            graph.stream(
+                {"messages": []}, config, stream_mode=["tools"], subgraphs=True
+            )
+        )
+        resumed = _tool_events(
+            graph.stream(
+                Command(resume="yes"), config, stream_mode=["tools"], subgraphs=True
+            )
+        )
+
+        assert [p["event"] for _, p in paused] == ["tool-started"]
+        assert [(p["event"], p["tool_call_id"]) for _, p in resumed] == [
+            ("tool-started", "tc1"),
+            ("tool-finished", "tc1"),
+        ]
+
+    def test_tool_handing_off_to_the_parent_still_ends_its_call(self) -> None:
+        class State(TypedDict):
+            messages: Annotated[list, add_messages]
+            done: bool
+
+        def hand_off(state: State) -> Command:
+            return Command(graph=Command.PARENT, goto="finish", update={"done": True})
+
+        inner = StateGraph(State).add_node("hand_off", hand_off)
+        inner = inner.add_edge(START, "hand_off").compile()
+
+        @tool
+        def handoff() -> str:
+            """hands off."""
+            inner.invoke({"messages": [], "done": False})
+            return "unreachable"
+
+        graph = (
+            StateGraph(State)
+            .add_node("caller", _caller_sync("handoff", {}))
+            .add_node("tools", ToolNode([handoff]))
+            .add_node("finish", lambda state: {"done": True})
+            .add_edge(START, "caller")
+            .add_edge("caller", "tools")
+            .add_edge("tools", END)
+            .add_edge("finish", END)
+            .compile()
+        )
+        events = [
+            payload["event"]
+            for _, payload in _tool_events(
+                graph.stream(
+                    {"messages": [], "done": False},
+                    stream_mode=["tools"],
+                    subgraphs=True,
+                )
+            )
+        ]
+
+        assert events[0] == "tool-started"
+        assert events[-1] == "tool-error", events
+
+    def test_drained_tool_is_not_a_tool_error(self) -> None:
+        control = RunControl()
+
+        def request_drain(state: _State) -> dict:
+            control.request_drain()
+            return {}
+
+        inner = (
+            StateGraph(_State)
+            .add_node("request_drain", request_drain)
+            .add_node("after", lambda state: {})
+            .add_edge(START, "request_drain")
+            .add_edge("request_drain", "after")
+            .compile()
+        )
+
+        @tool
+        def drained() -> str:
+            """drains."""
+            inner.invoke({"messages": []}, control=control)
+            return "unreachable"
+
+        graph = _build_graph(_caller_sync("drained", {}), [drained])
+        chunks: list = []
+        with pytest.raises(GraphDrained):
+            for chunk in graph.stream(
+                {"messages": []}, stream_mode=["tools"], subgraphs=True
+            ):
+                chunks.append(chunk)
+
+        assert [p["event"] for _, p in _tool_events(chunks)] == ["tool-started"]
+
    def test_writer_unset_outside_tool(self) -> None:
        # Outside any tool body the ContextVar that ToolRuntime reads
        # is unset — emitting from there would be a no-op.
@@ -196,6 +299,25 @@ class TestAsyncGraphAsyncTool:
        assert kinds == ["tool-started", "tool-output-delta", "tool-finished"]
        assert events[1][1]["delta"] == "hi"

+    @pytest.mark.anyio
+    async def test_interrupt_in_async_tool_is_not_a_tool_error(self) -> None:
+        @tool
+        async def aask() -> str:
+            """asks."""
+            return interrupt("ok?")
+
+        graph = _build_graph(_caller_async("aask", {}), [aask], InMemorySaver())
+        config = {"configurable": {"thread_id": "1"}}
+        events = []
+        for graph_input in ({"messages": []}, Command(resume="yes")):
+            async for ns, mode, payload in graph.astream(
+                graph_input, config, stream_mode=["tools"], subgraphs=True
+            ):
+                if mode == "tools":
+                    events.append(payload["event"])
+
+        assert events == ["tool-started", "tool-started", "tool-finished"]
+

 class TestConcurrentToolCalls:
    def test_parallel_tool_calls_do_not_bleed(self) -> None:
@@ -1,11 +1,24 @@
 """End-to-end tests for `TracePolicy` input processing on node trace runs."""

+import asyncio
+from collections.abc import AsyncIterator, Iterator
 from typing import Any
+from uuid import UUID

 import pytest
+from langchain_core.callbacks import BaseCallbackHandler
+from langchain_core.language_models.fake_chat_models import FakeMessagesListChatModel
+from langchain_core.messages import AIMessage, HumanMessage
+from langchain_core.runnables import RunnableConfig
 from typing_extensions import TypedDict

-from langgraph.graph import END, START, StateGraph
+from langgraph._internal._runnable import (
+    ASYNCIO_ACCEPTS_CONTEXT,
+    RunnableCallable,
+    RunnableSeq,
+)
+from langgraph.graph import END, START, MessagesState, StateGraph
+from langgraph.graph.state import CompiledStateGraph
 from langgraph.types import TracePolicy
 from tests.fake_tracer import FakeTracer, Run

@@ -147,3 +160,179 @@ async def test_trace_policy_transforms_recorded_inputs_async() -> None:
    run = _node_run(tracer, "n")
    assert run.inputs == {"scrubbed_in": True}
    assert run.outputs == {"value": 6}
+
+
+_RECORDING_POLICY = TracePolicy(
+    process_inputs=lambda _: {"recorded": "inputs"},
+    process_outputs=lambda _: {"recorded": "outputs"},
+)
+
+
+def _chat_graph() -> CompiledStateGraph:
+    model = FakeMessagesListChatModel(
+        responses=[AIMessage("model reply", id="ai-model")]
+    )
+
+    def chat(state: MessagesState) -> dict[str, Any]:
+        reply = model.invoke(state["messages"])
+        return {
+            "messages": [
+                *state["messages"],
+                reply,
+                AIMessage("from node", id="ai-node"),
+            ]
+        }
+
+    return (
+        StateGraph(MessagesState)
+        .add_node("chat", chat, trace_policy=_RECORDING_POLICY)
+        .add_edge(START, "chat")
+        .compile()
+    )
+
+
+def _assert_scrubbed_node_run(tracer: FakeTracer, *, model_is_child: bool) -> None:
+    run = _node_run(tracer, "chat")
+    assert run.inputs == {"recorded": "inputs"}
+    assert run.outputs == {"recorded": "outputs"}
+    if model_is_child:
+        assert [c.name for c in run.child_runs] == ["FakeMessagesListChatModel"]
+
+
+def test_trace_policy_scrubs_tracer_not_messages_stream() -> None:
+    tracer = FakeTracer()
+    streamed = [
+        message.content
+        for message, _ in _chat_graph().stream(
+            {"messages": [HumanMessage("hello", id="h-1")]},
+            {"callbacks": [tracer]},
+            stream_mode="messages",
+        )
+    ]
+
+    assert streamed == ["model reply", "from node"]
+    _assert_scrubbed_node_run(tracer, model_is_child=True)
+
+
+@pytest.mark.anyio
+async def test_trace_policy_scrubs_tracer_not_messages_stream_async() -> None:
+    tracer = FakeTracer()
+    streamed = [
+        message.content
+        async for message, _ in _chat_graph().astream(
+            {"messages": [HumanMessage("hello", id="h-1")]},
+            {"callbacks": [tracer]},
+            stream_mode="messages",
+        )
+    ]
+
+    assert streamed == ["model reply", "from node"]
+    _assert_scrubbed_node_run(tracer, model_is_child=ASYNCIO_ACCEPTS_CONTEXT)
+
+
+@pytest.mark.anyio
+async def test_trace_policy_scrubs_tracer_not_astream_events() -> None:
+    tracer = FakeTracer()
+    chat_events = [
+        event
+        async for event in _chat_graph().astream_events(
+            {"messages": [HumanMessage("hello", id="h-1")]},
+            {"callbacks": [tracer]},
+            version="v2",
+        )
+        if event["name"] == "chat"
+        and event["event"] in ("on_chain_start", "on_chain_end")
+    ]
+
+    assert [e["event"] for e in chat_events] == ["on_chain_start", "on_chain_end"]
+    start, end = (e["data"] for e in chat_events)
+    assert [m.content for m in start["input"]["messages"]] == ["hello"]
+    assert [m.content for m in end["output"]["messages"]] == [
+        "hello",
+        "model reply",
+        "from node",
+    ]
+    _assert_scrubbed_node_run(tracer, model_is_child=ASYNCIO_ACCEPTS_CONTEXT)
+
+
+class _HandlerWithTapMethods(BaseCallbackHandler):
+    def __init__(self) -> None:
+        self.node_payloads: list[Any] = []
+        self.node_run_ids: set[UUID] = set()
+
+    def _record(self, run_id: UUID, payload: Any) -> None:
+        if run_id in self.node_run_ids:
+            self.node_payloads.append(payload)
+
+    def tap_output_iter(self, run_id: UUID, output: Iterator[Any]) -> Iterator[Any]:
+        for chunk in output:
+            self._record(run_id, chunk)
+            yield chunk
+
+    async def tap_output_aiter(
+        self, run_id: UUID, output: AsyncIterator[Any]
+    ) -> AsyncIterator[Any]:
+        async for chunk in output:
+            self._record(run_id, chunk)
+            yield chunk
+
+    def on_chain_start(
+        self, serialized: Any, inputs: Any, *, run_id: UUID, **kwargs: Any
+    ) -> None:
+        if kwargs.get("name") == "n":
+            self.node_run_ids.add(run_id)
+            self._record(run_id, inputs)
+
+    def on_chain_end(self, outputs: Any, *, run_id: UUID, **kwargs: Any) -> None:
+        self._record(run_id, outputs)
+
+
+@pytest.mark.anyio
+@pytest.mark.parametrize("via_events", [False, True], ids=["ainvoke", "astream_events"])
+async def test_trace_policy_reaches_tracers_but_not_custom_handlers(
+    via_events: bool,
+) -> None:
+    graph = (
+        StateGraph(State)
+        .add_node("n", _incr, trace_policy=_RECORDING_POLICY)
+        .add_edge(START, "n")
+        .add_edge("n", END)
+        .compile()
+    )
+    handler = _HandlerWithTapMethods()
+    tracer = FakeTracer()
+    config: RunnableConfig = {"callbacks": [handler, tracer]}
+
+    if via_events:
+        async for _ in graph.astream_events({"value": 1}, config, version="v2"):
+            pass
+    else:
+        assert await graph.ainvoke({"value": 1}, config) == {"value": 2}
+    assert handler.node_payloads == [{"value": 1}, {"value": 2}]
+    run = _node_run(tracer, "n")
+    assert (run.inputs, run.outputs) == (
+        {"recorded": "inputs"},
+        {"recorded": "outputs"},
+    )
+
+
+@pytest.mark.anyio
+async def test_trace_policy_cancel_at_node_end_still_closes_tracer_run() -> None:
+    def cancel_own_task(value: Any) -> Any:
+        asyncio.current_task().cancel()
+        return value
+
+    tracer = FakeTracer()
+    seq = RunnableSeq(
+        RunnableCallable(lambda x: x, trace=False),
+        RunnableCallable(cancel_own_task, trace=False),
+        trace_policy=_RECORDING_POLICY,
+    )
+    with pytest.raises(asyncio.CancelledError):
+        await asyncio.create_task(seq.ainvoke({}, {"callbacks": [tracer]}))
+    for _ in range(100):
+        if tracer.runs:
+            break
+        await asyncio.sleep(0.01)
+
+    assert [r.outputs for r in tracer.runs] == [{"recorded": "outputs"}]
@@ -799,6 +799,15 @@ def test_ensure_config_tags_concat_preserves_order_and_duplicates() -> None:
    assert merged["tags"] == ["shared", "alpha", "shared", "beta"]


+def test_ensure_config_skips_tags_inherited_from_ambient() -> None:
+    token = var_child_runnable_config.set({"tags": ["inherited"]})
+    try:
+        merged = ensure_config({"tags": ["inherited", "own"]})
+    finally:
+        var_child_runnable_config.reset(token)
+    assert merged["tags"] == ["inherited", "own"]
+
+
 def test_ensure_config_merges_callbacks_across_configs() -> None:
    a_cb = _TrackingCB("a")
    b_cb = _TrackingCB("b")
@@ -1439,7 +1439,7 @@ wheels = [

 [[package]]
 name = "langgraph"
-version = "1.2.17"
+version = "1.2.19"
 source = { editable = "." }
 dependencies = [
    { name = "langchain-core" },
@@ -1625,7 +1625,7 @@ wheels = [

 [[package]]
 name = "langgraph-checkpoint"
-version = "4.3.0"
+version = "4.3.1"
 source = { editable = "../checkpoint" }
 dependencies = [
    { name = "langchain-core" },
@@ -1722,7 +1722,7 @@ test = [

 [[package]]
 name = "langgraph-checkpoint-sqlite"
-version = "3.1.2"
+version = "3.1.3"
 source = { editable = "../checkpoint-sqlite" }
 dependencies = [
    { name = "aiosqlite" },
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 [[package]]
@@ -3419,11 +3418,11 @@ wheels = [

 [[package]]
 name = "setuptools"
-version = "83.0.0"
+version = "84.1.0"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/34/26/f5d29e25ffdb535afef2d35cdb55b325298f96debd670da4c325e08d70f4/setuptools-83.0.0.tar.gz", hash = "sha256:025bccbbf0fa05b6192bc64ae1e7b16e001fd6d6d4d5de03c97b1c1ade523bef", size = 1154254, upload-time = "2026-07-04T15:31:22.699Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/73/eb/7e5f628ee2eb168fecbf8026de7856b2543d6d609cc85f086b9a91ac93d6/setuptools-84.1.0.tar.gz", hash = "sha256:23657205b63d4d31395ab917815247f694aafad28cd21316bf5fd45a51048ea0", size = 1171783, upload-time = "2026-10-19T20:11:43.489Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/5d/40/e1e72872c6354b306daef1703549e8e83b4d43cfea356311bf722a043752/setuptools-83.0.0-py3-none-any.whl", hash = "sha256:29b23c360f22f414dc7336bb39178cc7bcbf6021ed2733cde173f09dba19abb3", size = 1008090, upload-time = "2026-07-04T15:31:20.885Z" },
+    { url = "https://files.pythonhosted.org/packages/18/02/b4bbb90f8f29e334898ff45c6d9b1fffaa6f378017052b3023a06262b5f7/setuptools-84.1.0-py3-none-any.whl", hash = "sha256:5231689c6ac8156cd155cfb98c3fd6fb252c3e7e9bd3d78b64d3c55f132624c9", size = 819380, upload-time = "2026-10-19T20:11:41.684Z" },
 ]

 [[package]]
@@ -3669,14 +3668,14 @@ wheels = [

 [[package]]
 name = "types-requests"
-version = "2.33.0.20260906"
+version = "2.33.0.20261006"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "urllib3" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/c0/18/4c2c0290953f8b3b9612adfcb07b57f144ade3ad32a76764fca42b77c5f3/types_requests-2.33.0.20260906.tar.gz", hash = "sha256:76ab8a0fb736744a0c3deee7aa57b2927e301f078d9e61f5391b3e92002416b9", size = 25263, upload-time = "2026-09-06T06:35:47.707Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/57/15/9b7e2e2e7c87d01366185b198b3febc6bc0c973f2bf21a62da4ab7d3495e/types_requests-2.33.0.20261006.tar.gz", hash = "sha256:0652999e9306aea345f40732d58fa49a7f6cade6a0d74d92119c5c8d82eddaf0", size = 25316, upload-time = "2026-10-06T08:15:57.782Z" }
 wheels = [
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+    { url = "https://files.pythonhosted.org/packages/4d/72/b82789207b3d360ce9f5a4372c790c52cc3dd928aeb7d4faeec652b651b2/types_requests-2.33.0.20261006-py3-none-any.whl", hash = "sha256:26cc8146505cab33cda9737991929e4144c559bebe05078ccc6998f27c4ca2c1", size = 21445, upload-time = "2026-10-06T08:15:56.658Z" },
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 [[package]]
@@ -286,7 +286,7 @@ wheels = [

 [[package]]
 name = "langgraph"
-version = "1.2.17"
+version = "1.2.19"
 source = { editable = "../langgraph" }
 dependencies = [
    { name = "langchain-core" },
@@ -370,7 +370,7 @@ test = [

 [[package]]
 name = "langgraph-checkpoint"
-version = "4.3.0"
+version = "4.3.1"
 source = { editable = "../checkpoint" }
 dependencies = [
    { name = "langchain-core" },
@@ -467,7 +467,7 @@ test = [

 [[package]]
 name = "langgraph-checkpoint-sqlite"
-version = "3.1.2"
+version = "3.1.3"
 source = { editable = "../checkpoint-sqlite" }
 dependencies = [
    { name = "aiosqlite" },
@@ -1,6 +1,21 @@
 # Changelog

-## Unreleased
+## 0.4.12
+
+### Removed
+
+- **`PrioritySettings.fairness_weight`** — removed. The server stores only
+  `priority` and `fairness_group` on the thread; it ignores a
+  `fairness_weight` and logs a warning. Remove it from your callback.
+
+### Changed
+
+- **`PrioritySettings.priority`** — now says -5 runs first and 5 runs last,
+  matching how the server orders runs. 0.4.9 to 0.4.11 said the reverse, and
+  their example gave premium users 3, which runs them after everyone at the
+  default 0. Check any callback written from those docs.
+
+## 0.4.11 and earlier

 ### Added

@@ -38,7 +53,7 @@
  and name the object in the `priority` section of `langgraph.json`. The
  server calls the function with a `PriorityContext` at the first run on a
  thread with no settings and stores the `PrioritySettings` it returns
-  (`priority`, `fairness_group`, `fairness_weight`) on the thread. Requires
+  (`priority`, `fairness_group`) on the thread. Requires
  `langgraph-api` 0.18.0 or later and a `langgraph-cli` that supports the
  section; older versions of either ignore it.

@@ -5,7 +5,7 @@ from langgraph_sdk.encryption.types import DecryptResult, EncryptionContext
 from langgraph_sdk.priority import Priority
 from langgraph_sdk.priority.types import PriorityContext, PrioritySettings

-__version__ = "0.4.9"
+__version__ = "0.4.11"

 __all__ = [
    "Auth",
@@ -14,9 +14,16 @@ import orjson

 from langgraph_sdk._shared.utilities import (
    _orjson_default,
+    _reconnect_delay,
+    _run_check_headers,
+    _run_url_from_stream_location,
    _validate_reconnect_location,
 )
-from langgraph_sdk.errors import _araise_for_status_typed
+from langgraph_sdk.errors import (
+    InternalServerError,
+    RateLimitError,
+    _araise_for_status_typed,
+)
 from langgraph_sdk.schema import QueryParamTypes, StreamPart
 from langgraph_sdk.sse import SSEDecoder, aiter_lines_raw

@@ -146,7 +153,8 @@ class HttpClient:
        on_response: Callable[[httpx.Response], None] | None = None,
        reconnect_limit: int = 5,
    ) -> Any:
-        """Send a request that automatically reconnects to Location header."""
+        """Send a request that reconnects to its Location header if the response is
+        cut off, with backoff between attempts."""
        request_headers, content = await _aencode_json(json)
        if headers:
            request_headers.update(headers)
@@ -176,13 +184,27 @@ class HttpClient:
                    stacklevel=2,
                )
                await r.aclose()
-                return await self.request_reconnect(
-                    loc,
-                    "GET",
-                    headers=request_headers,
-                    # don't pass on_response so it's only called once
-                    reconnect_limit=reconnect_limit - 1,
-                )
+                for attempt in range(reconnect_limit):
+                    await asyncio.sleep(_reconnect_delay(attempt, base=1.0, cap=5.0))
+                    # A restart or a deploy looks like a refused connection, a
+                    # dropped body, a 429 or a 5xx; other errors won't go away.
+                    try:
+                        return await self.request_reconnect(
+                            loc,
+                            "GET",
+                            headers=headers,
+                            # don't pass on_response so it's only called once
+                            reconnect_limit=0,
+                        )
+                    except httpx.HTTPStatusError as err:
+                        status = err.response.status_code
+                        if attempt == reconnect_limit - 1 or (
+                            status != 429 and status < 500
+                        ):
+                            raise
+                    except httpx.TransportError:
+                        if attempt == reconnect_limit - 1:
+                            raise

    async def stream(
        self,
@@ -212,77 +234,119 @@ class HttpClient:
        reconnect_path: str | None = None
        reconnect_attempts = 0
        max_reconnect_attempts = 5
+        run_ended = False

        while True:
            current_headers = dict(
                request_headers if reconnect_path is None else reconnect_headers
            )
            if last_event_id is not None:
+                current_headers = {
+                    key: value
+                    for key, value in current_headers.items()
+                    if key.lower() != "last-event-id"
+                }
+            if last_event_id:
                current_headers["Last-Event-ID"] = last_event_id
+            if reconnect_path is not None and not any(
+                key.lower() == "last-event-id" and value
+                for key, value in current_headers.items()
+            ):
+                warnings.warn(
+                    "Reconnecting without a Last-Event-ID, so events sent while "
+                    "disconnected are not replayed. Only runs created with "
+                    "stream_resumable=True send the event IDs a reconnect resumes "
+                    "from.",
+                    stacklevel=2,
+                )

            current_method = method if reconnect_path is None else "GET"
            current_content = content if reconnect_path is None else None
            current_params = params if reconnect_path is None else None

-            retry = False
-            async with self.client.stream(
-                current_method,
-                reconnect_path or path,
-                headers=current_headers,
-                content=current_content,
-                params=current_params,
-            ) as res:
-                if reconnect_path is None and on_response:
-                    on_response(res)
-                # check status
-                await _araise_for_status_typed(res)
-                # check content type
-                content_type = res.headers.get("content-type", "").partition(";")[0]
-                if "text/event-stream" not in content_type:
-                    raise httpx.TransportError(
-                        "Expected response header Content-Type to contain 'text/event-stream', "
-                        f"got {content_type!r}"
-                    )
+            reconnect_cause: httpx.HTTPError | None = None
+            try:
+                async with self.client.stream(
+                    current_method,
+                    reconnect_path or path,
+                    headers=current_headers,
+                    content=current_content,
+                    params=current_params,
+                ) as res:
+                    if reconnect_path is None and on_response:
+                        on_response(res)
+                    # check status
+                    await _araise_for_status_typed(res)
+                    # check content type
+                    content_type = res.headers.get("content-type", "").partition(";")[0]
+                    if "text/event-stream" not in content_type:
+                        raise httpx.TransportError(
+                            "Expected response header Content-Type to contain 'text/event-stream', "
+                            f"got {content_type!r}"
+                        )

-                reconnect_location = res.headers.get("location")
-                if reconnect_location:
-                    _validate_reconnect_location(
-                        self.client.base_url, reconnect_location
-                    )
-                    reconnect_path = reconnect_location
+                    reconnect_location = res.headers.get("location")
+                    if reconnect_location:
+                        _validate_reconnect_location(
+                            self.client.base_url, reconnect_location
+                        )
+                        reconnect_path = reconnect_location

-                # parse SSE
-                decoder = SSEDecoder()
-                try:
-                    async for line in aiter_lines_raw(res):
-                        sse = decoder.decode(line=cast("bytes", line).rstrip(b"\n"))
-                        if sse is not None:
+                    # parse SSE
+                    decoder = SSEDecoder(last_event_id=last_event_id)
+                    try:
+                        async for line in aiter_lines_raw(res):
+                            sse = decoder.decode(line=cast("bytes", line).rstrip(b"\n"))
+                            if sse is not None:
+                                if decoder.last_event_id is not None:
+                                    last_event_id = decoder.last_event_id
+                                if sse.event or decoder.has_data:
+                                    # Progress since the last drop earns a fresh
+                                    # set of reconnect attempts.
+                                    reconnect_attempts = 0
+                                    run_ended |= sse.event in ("end", "error")
+                                    yield sse
+                    except httpx.HTTPError as err:
+                        # httpx.TransportError inherits from HTTPError, so transient
+                        # disconnects during streaming land here.
+                        if reconnect_path is None:
+                            raise
+                        reconnect_cause = err
+                    else:
+                        if sse := decoder.decode(b""):
                            if decoder.last_event_id is not None:
                                last_event_id = decoder.last_event_id
-                            if sse.event or sse.data is not None:
+                            if sse.event or decoder.has_data:
+                                # decoder.decode(b"") flushes the in-flight event and may
+                                # return an empty placeholder when there is no pending
+                                # message. Skip these no-op events so the stream doesn't
+                                # emit a trailing blank item after reconnects.
+                                run_ended |= sse.event in ("end", "error")
                                yield sse
-                except httpx.HTTPError:
-                    # httpx.TransportError inherits from HTTPError, so transient
-                    # disconnects during streaming land here.
-                    if reconnect_path is None:
-                        raise
-                    retry = True
-                else:
-                    if sse := decoder.decode(b""):
-                        if decoder.last_event_id is not None:
-                            last_event_id = decoder.last_event_id
-                        if sse.event or sse.data is not None:
-                            # decoder.decode(b"") flushes the in-flight event and may
-                            # return an empty placeholder when there is no pending
-                            # message. Skip these no-op events so the stream doesn't
-                            # emit a trailing blank item after reconnects.
-                            yield sse
-            if retry:
+            except (httpx.TransportError, RateLimitError, InternalServerError) as err:
+                # A reconnect that can't open (connection refused, 429, 5xx or a
+                # non-SSE body) usually means the server is restarting or
+                # mid-deploy, so retry it like a drop. Before the server sends a
+                # Location there is nothing to reconnect to, so raise.
+                if reconnect_path is None:
+                    raise
+                reconnect_cause = err
+            # A run's stream closes cleanly both when the run ends and when a
+            # proxy timeout or a server restart cuts it. Without an `end` or
+            # `error` event the two look the same, so ask the run.
+            if reconnect_cause is None and reconnect_path is not None and not run_ended:
+                reconnect_cause = await _acheck_run(
+                    self.client, reconnect_path, reconnect_headers
+                )
+            if reconnect_cause is not None:
                reconnect_attempts += 1
                if reconnect_attempts > max_reconnect_attempts:
                    raise httpx.TransportError(
                        "Exceeded maximum SSE reconnection attempts"
-                    )
+                    ) from reconnect_cause
+                await asyncio.sleep(
+                    _reconnect_delay(reconnect_attempts - 1, base=1.0, cap=5.0)
+                )
                continue
            break

@@ -310,3 +374,28 @@ async def _adecode_json(r: httpx.Response) -> Any:
        if body
        else None
    )
+
+
+async def _acheck_run(
+    client: httpx.AsyncClient, stream_location: str, headers: Mapping[str, str]
+) -> httpx.HTTPError | None:
+    run_url = _run_url_from_stream_location(stream_location)
+    if run_url is None:
+        return None
+    try:
+        r = await client.get(run_url, headers=_run_check_headers(headers))
+        if r.status_code == 429 or r.status_code >= 500:
+            await _araise_for_status_typed(r)
+        status = (await _adecode_json(r))["status"] if r.is_success else None
+    except (httpx.TransportError, RateLimitError, InternalServerError) as err:
+        # The restart that closed the stream can fail the check too, so retry
+        # it like a drop.
+        return err
+    except Exception:
+        # Anything else must not turn a normal end of stream into an error.
+        return None
+    if status in ("pending", "running"):
+        return httpx.TransportError(
+            "Stream closed while the run was still pending or running"
+        )
+    return None
@@ -99,6 +99,7 @@ class RunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
        version: Literal["v1"] = "v1",
    ) -> AsyncIterator[StreamPart]: ...

@@ -131,6 +132,7 @@ class RunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
        version: Literal["v2"],
    ) -> AsyncIterator[StreamPartV2]: ...

@@ -147,6 +149,7 @@ class RunsClient:
        stream_resumable: bool = False,
        metadata: Mapping[str, Any] | None = None,
        config: Config | None = None,
+        context: Context | None = None,
        checkpoint_during: bool | None = None,
        interrupt_before: All | Sequence[str] | None = None,
        interrupt_after: All | Sequence[str] | None = None,
@@ -160,6 +163,7 @@ class RunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
        version: Literal["v1"] = "v1",
    ) -> AsyncIterator[StreamPart]: ...

@@ -176,6 +180,7 @@ class RunsClient:
        stream_resumable: bool = False,
        metadata: Mapping[str, Any] | None = None,
        config: Config | None = None,
+        context: Context | None = None,
        checkpoint_during: bool | None = None,
        interrupt_before: All | Sequence[str] | None = None,
        interrupt_after: All | Sequence[str] | None = None,
@@ -189,6 +194,7 @@ class RunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
        version: Literal["v2"],
    ) -> AsyncIterator[StreamPartV2]: ...

@@ -385,6 +391,7 @@ class RunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
    ) -> Run: ...

    @overload
@@ -414,6 +421,7 @@ class RunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
    ) -> Run: ...

    async def create(
@@ -647,6 +655,7 @@ class RunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
    ) -> builtins.list[dict] | dict[str, Any]: ...

    @overload
@@ -673,6 +682,7 @@ class RunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
    ) -> builtins.list[dict] | dict[str, Any]: ...

    async def wait(
@@ -16,7 +16,6 @@ from __future__ import annotations
 import asyncio
 import contextlib
 import logging
-import random
 from collections.abc import AsyncGenerator, AsyncIterator, Generator, Mapping
 from dataclasses import dataclass, field
 from typing import Any, Literal, TypedDict, cast
@@ -25,7 +24,7 @@ from langchain_core.language_models.chat_model_stream import AsyncChatModelStrea
 from langchain_protocol import Event, SubscribeParams

 from langgraph_sdk._async.http import HttpClient
-from langgraph_sdk._shared.utilities import _quote_path_param
+from langgraph_sdk._shared.utilities import _quote_path_param, _reconnect_delay
 from langgraph_sdk.schema import LangSmithTracing, QueryParamTypes
 from langgraph_sdk.stream.controller import _SeenEventIds
 from langgraph_sdk.stream.decoders import (
@@ -1691,11 +1690,13 @@ class AsyncThreadStream:

    async def _reconnect_sleep(self, attempt: int) -> None:
        """Sleep with exponential backoff and jitter for reconnect attempt `attempt`."""
-        base = self._shared_reconnect_backoff_base
-        cap = self._shared_reconnect_backoff_cap
-        delay = min(cap, base * (2**attempt))
-        jitter = random.uniform(0, delay * 0.25)
-        await asyncio.sleep(delay + jitter)
+        await asyncio.sleep(
+            _reconnect_delay(
+                attempt,
+                base=self._shared_reconnect_backoff_base,
+                cap=self._shared_reconnect_backoff_cap,
+            )
+        )

    async def _reconnect_shared_stream(self) -> bool:
        """Attempt to reopen the shared stream after a post-ready transport drop.
@@ -4,11 +4,12 @@ from __future__ import annotations

 import functools
 import os
+import random
 import re
 from collections.abc import Mapping
 from datetime import tzinfo
 from typing import TYPE_CHECKING, Any, cast
-from urllib.parse import quote, urlparse
+from urllib.parse import quote, urlparse, urlsplit, urlunsplit

 import httpx

@@ -194,6 +195,34 @@ def _validate_reconnect_location(base_url: httpx.URL, location: str) -> str:
    return location


+_RUN_STREAM_PATH = re.compile(r"(.*/threads/[^/]+/runs/[^/]+)/stream")
+
+
+def _run_url_from_stream_location(location: str) -> str | None:
+    url = urlsplit(location)
+    if match := _RUN_STREAM_PATH.fullmatch(url.path):
+        return urlunsplit((url.scheme, url.netloc, match[1], "", ""))
+    return None
+
+
+def _run_check_headers(reconnect_headers: Mapping[str, str]) -> dict[str, str]:
+    headers = {
+        key: value
+        for key, value in reconnect_headers.items()
+        if key.lower() not in ("accept", "last-event-id")
+    }
+    return {**headers, "Accept": "application/json"}
+
+
+def _reconnect_delay(attempt: int, *, base: float, cap: float) -> float:
+    """Seconds to wait before reconnect attempt `attempt` (0-based).
+
+    Exponential backoff capped at `cap`, plus up to 25% jitter.
+    """
+    delay = min(cap, base * (2**attempt))
+    return delay + random.uniform(0, delay * 0.25)
+
+
 def _provided_vals(d: Mapping[str, Any]) -> dict[str, Any]:
    return {k: v for k, v in d.items() if v is not None}

@@ -4,6 +4,7 @@ from __future__ import annotations

 import logging
 import sys
+import time
 import warnings
 from collections.abc import Callable, Iterator, Mapping
 from typing import Any, cast
@@ -13,9 +14,16 @@ import orjson

 from langgraph_sdk._shared.utilities import (
    _orjson_default,
+    _reconnect_delay,
+    _run_check_headers,
+    _run_url_from_stream_location,
    _validate_reconnect_location,
 )
-from langgraph_sdk.errors import _raise_for_status_typed
+from langgraph_sdk.errors import (
+    InternalServerError,
+    RateLimitError,
+    _raise_for_status_typed,
+)
 from langgraph_sdk.schema import QueryParamTypes, StreamPart
 from langgraph_sdk.sse import SSEDecoder, iter_lines_raw

@@ -146,7 +154,8 @@ class SyncHttpClient:
        on_response: Callable[[httpx.Response], None] | None = None,
        reconnect_limit: int = 5,
    ) -> Any:
-        """Send a request that automatically reconnects to Location header."""
+        """Send a request that reconnects to its Location header if the response is
+        cut off, with backoff between attempts."""
        request_headers, content = _encode_json(json)
        if headers:
            request_headers.update(headers)
@@ -176,13 +185,27 @@ class SyncHttpClient:
                    stacklevel=2,
                )
                r.close()
-                return self.request_reconnect(
-                    loc,
-                    "GET",
-                    headers=request_headers,
-                    # don't pass on_response so it's only called once
-                    reconnect_limit=reconnect_limit - 1,
-                )
+                for attempt in range(reconnect_limit):
+                    time.sleep(_reconnect_delay(attempt, base=1.0, cap=5.0))
+                    # A restart or a deploy looks like a refused connection, a
+                    # dropped body, a 429 or a 5xx; other errors won't go away.
+                    try:
+                        return self.request_reconnect(
+                            loc,
+                            "GET",
+                            headers=headers,
+                            # don't pass on_response so it's only called once
+                            reconnect_limit=0,
+                        )
+                    except httpx.HTTPStatusError as err:
+                        status = err.response.status_code
+                        if attempt == reconnect_limit - 1 or (
+                            status != 429 and status < 500
+                        ):
+                            raise
+                    except httpx.TransportError:
+                        if attempt == reconnect_limit - 1:
+                            raise

    def stream(
        self,
@@ -214,79 +237,121 @@ class SyncHttpClient:
        reconnect_path: str | None = None
        reconnect_attempts = 0
        max_reconnect_attempts = 5
+        run_ended = False

        while True:
            current_headers = dict(
                request_headers if reconnect_path is None else reconnect_headers
            )
            if last_event_id is not None:
+                current_headers = {
+                    key: value
+                    for key, value in current_headers.items()
+                    if key.lower() != "last-event-id"
+                }
+            if last_event_id:
                current_headers["Last-Event-ID"] = last_event_id
+            if reconnect_path is not None and not any(
+                key.lower() == "last-event-id" and value
+                for key, value in current_headers.items()
+            ):
+                warnings.warn(
+                    "Reconnecting without a Last-Event-ID, so events sent while "
+                    "disconnected are not replayed. Only runs created with "
+                    "stream_resumable=True send the event IDs a reconnect resumes "
+                    "from.",
+                    stacklevel=2,
+                )

            current_method = method if reconnect_path is None else "GET"
            current_content = content if reconnect_path is None else None
            current_params = params if reconnect_path is None else None

-            retry = False
-            with self.client.stream(
-                current_method,
-                reconnect_path or path,
-                headers=current_headers,
-                content=current_content,
-                params=current_params,
-            ) as res:
-                if reconnect_path is None and on_response:
-                    on_response(res)
-                # check status
-                _raise_for_status_typed(res)
-                # check content type
-                content_type = res.headers.get("content-type", "").partition(";")[0]
-                if "text/event-stream" not in content_type:
-                    raise httpx.TransportError(
-                        "Expected response header Content-Type to contain 'text/event-stream', "
-                        f"got {content_type!r}"
-                    )
+            reconnect_cause: httpx.HTTPError | None = None
+            try:
+                with self.client.stream(
+                    current_method,
+                    reconnect_path or path,
+                    headers=current_headers,
+                    content=current_content,
+                    params=current_params,
+                ) as res:
+                    if reconnect_path is None and on_response:
+                        on_response(res)
+                    # check status
+                    _raise_for_status_typed(res)
+                    # check content type
+                    content_type = res.headers.get("content-type", "").partition(";")[0]
+                    if "text/event-stream" not in content_type:
+                        raise httpx.TransportError(
+                            "Expected response header Content-Type to contain 'text/event-stream', "
+                            f"got {content_type!r}"
+                        )

-                reconnect_location = res.headers.get("location")
-                if reconnect_location:
-                    _validate_reconnect_location(
-                        self.client.base_url, reconnect_location
-                    )
-                    reconnect_path = reconnect_location
+                    reconnect_location = res.headers.get("location")
+                    if reconnect_location:
+                        _validate_reconnect_location(
+                            self.client.base_url, reconnect_location
+                        )
+                        reconnect_path = reconnect_location

-                decoder = SSEDecoder()
-                try:
-                    for line in iter_lines_raw(res):
-                        sse = decoder.decode(cast(bytes, line).rstrip(b"\n"))
-                        if sse is not None:
+                    decoder = SSEDecoder(last_event_id=last_event_id)
+                    try:
+                        for line in iter_lines_raw(res):
+                            sse = decoder.decode(cast(bytes, line).rstrip(b"\n"))
+                            if sse is not None:
+                                if decoder.last_event_id is not None:
+                                    last_event_id = decoder.last_event_id
+                                if sse.event or decoder.has_data:
+                                    # Progress since the last drop earns a fresh
+                                    # set of reconnect attempts.
+                                    reconnect_attempts = 0
+                                    run_ended |= sse.event in ("end", "error")
+                                    yield sse
+                    except httpx.HTTPError as err:
+                        # httpx.TransportError inherits from HTTPError, so transient
+                        # disconnects during streaming land here.
+                        if reconnect_path is None:
+                            raise
+                        reconnect_cause = err
+                    else:
+                        if sse := decoder.decode(b""):
                            if decoder.last_event_id is not None:
                                last_event_id = decoder.last_event_id
-                            if sse.event or sse.data is not None:
+                            if sse.event or decoder.has_data:
+                                # See async stream implementation for rationale on
+                                # skipping empty flush events.
+                                run_ended |= sse.event in ("end", "error")
                                yield sse
-                except httpx.HTTPError:
-                    # httpx.TransportError inherits from HTTPError, so transient
-                    # disconnects during streaming land here.
-                    if reconnect_path is None:
-                        raise
-                    retry = True
-                else:
-                    if sse := decoder.decode(b""):
-                        if decoder.last_event_id is not None:
-                            last_event_id = decoder.last_event_id
-                        if sse.event or sse.data is not None:
-                            # See async stream implementation for rationale on
-                            # skipping empty flush events.
-                            yield sse
-            if retry:
+            except (httpx.TransportError, RateLimitError, InternalServerError) as err:
+                # A reconnect that can't open (connection refused, 429, 5xx or a
+                # non-SSE body) usually means the server is restarting or
+                # mid-deploy, so retry it like a drop. Before the server sends a
+                # Location there is nothing to reconnect to, so raise.
+                if reconnect_path is None:
+                    raise
+                reconnect_cause = err
+            # A run's stream closes cleanly both when the run ends and when a
+            # proxy timeout or a server restart cuts it. Without an `end` or
+            # `error` event the two look the same, so ask the run.
+            if reconnect_cause is None and reconnect_path is not None and not run_ended:
+                reconnect_cause = _check_run(
+                    self.client, reconnect_path, reconnect_headers
+                )
+            if reconnect_cause is not None:
                reconnect_attempts += 1
                if reconnect_attempts > max_reconnect_attempts:
                    raise httpx.TransportError(
                        "Exceeded maximum SSE reconnection attempts"
-                    )
+                    ) from reconnect_cause
+                time.sleep(_reconnect_delay(reconnect_attempts - 1, base=1.0, cap=5.0))
                continue
            break


-def _encode_json(json: Any) -> tuple[dict[str, str], bytes]:
+def _encode_json(json: Any) -> tuple[dict[str, str], bytes | None]:
+    if json is None:
+        return {}, None
    body = orjson.dumps(
        json,
        _orjson_default,
@@ -301,3 +366,28 @@ def _encode_json(json: Any) -> tuple[dict[str, str], bytes]:
 def _decode_json(r: httpx.Response) -> Any:
    body = r.read()
    return orjson.loads(body) if body else None
+
+
+def _check_run(
+    client: httpx.Client, stream_location: str, headers: Mapping[str, str]
+) -> httpx.HTTPError | None:
+    run_url = _run_url_from_stream_location(stream_location)
+    if run_url is None:
+        return None
+    try:
+        r = client.get(run_url, headers=_run_check_headers(headers))
+        if r.status_code == 429 or r.status_code >= 500:
+            _raise_for_status_typed(r)
+        status = _decode_json(r)["status"] if r.is_success else None
+    except (httpx.TransportError, RateLimitError, InternalServerError) as err:
+        # The restart that closed the stream can fail the check too, so retry
+        # it like a drop.
+        return err
+    except Exception:
+        # Anything else must not turn a normal end of stream into an error.
+        return None
+    if status in ("pending", "running"):
+        return httpx.TransportError(
+            "Stream closed while the run was still pending or running"
+        )
+    return None
@@ -80,6 +80,7 @@ class SyncRunsClient:
        command: Command | None = None,
        stream_mode: StreamMode | Sequence[StreamMode] = "values",
        stream_subgraphs: bool = False,
+        stream_resumable: bool = False,
        metadata: Mapping[str, Any] | None = None,
        config: Config | None = None,
        context: Context | None = None,
@@ -98,6 +99,7 @@ class SyncRunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
        version: Literal["v1"] = "v1",
    ) -> Iterator[StreamPart]: ...

@@ -111,6 +113,7 @@ class SyncRunsClient:
        command: Command | None = None,
        stream_mode: StreamMode | Sequence[StreamMode] = "values",
        stream_subgraphs: bool = False,
+        stream_resumable: bool = False,
        metadata: Mapping[str, Any] | None = None,
        config: Config | None = None,
        context: Context | None = None,
@@ -129,6 +132,7 @@ class SyncRunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
        version: Literal["v2"],
    ) -> Iterator[StreamPartV2]: ...

@@ -159,6 +163,7 @@ class SyncRunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
        version: Literal["v1"] = "v1",
    ) -> Iterator[StreamPart]: ...

@@ -189,6 +194,7 @@ class SyncRunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
        version: Literal["v2"],
    ) -> Iterator[StreamPartV2]: ...

@@ -380,6 +386,7 @@ class SyncRunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
    ) -> Run: ...

    @overload
@@ -409,6 +416,7 @@ class SyncRunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
    ) -> Run: ...

    def create(
@@ -642,6 +650,7 @@ class SyncRunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
    ) -> builtins.list[dict] | dict[str, Any]: ...

    @overload
@@ -668,6 +677,7 @@ class SyncRunsClient:
        headers: Mapping[str, str] | None = None,
        params: QueryParamTypes | None = None,
        on_run_created: Callable[[RunCreateMetadata], None] | None = None,
+        durability: Durability | None = None,
    ) -> builtins.list[dict] | dict[str, Any]: ...

    def wait(
@@ -815,7 +825,6 @@ class SyncRunsClient:
            "checkpoint_during": checkpoint_during,
            "on_completion": on_completion,
            "after_seconds": after_seconds,
-            "raise_error": raise_error,
            "durability": durability,
            "langsmith_tracer": langsmith_tracing,
        }
@@ -830,7 +839,7 @@ class SyncRunsClient:
            if thread_id is not None
            else "/runs/wait"
        )
-        return self.http.request_reconnect(
+        response = self.http.request_reconnect(
            endpoint,
            "POST",
            json={k: v for k, v in payload.items() if v is not None},
@@ -838,6 +847,16 @@ class SyncRunsClient:
            headers=headers,
            on_response=on_response if on_run_created else None,
        )
+        if (
+            raise_error
+            and isinstance(response, dict)
+            and "__error__" in response
+            and isinstance(response["__error__"], dict)
+        ):
+            raise Exception(
+                f"{response['__error__'].get('error')}: {response['__error__'].get('message')}"
+            )
+        return response

    def list(
        self,
@@ -811,7 +811,7 @@ class _On:
    def __call__(
        self,
        *,
-        resources: str | Sequence[str],
+        resources: str | Sequence[str] | None = None,
        actions: str | Sequence[str] | None = None,
    ) -> Callable[[AHO], AHO]: ...

@@ -102,7 +102,7 @@ class Priority:
        @priority.assign
        async def assign(ctx: PriorityContext) -> PrioritySettings | None:
            return {
-                "priority": 3 if "premium" in ctx.permissions else 0,
+                "priority": -3 if "premium" in ctx.permissions else 0,
                # Stored unencrypted, so an opaque ID rather than personal data.
                "fairness_group": ctx.user["org_id"],
            }
@@ -134,7 +134,7 @@ class Priority:
            @priority.assign
            async def assign(ctx: PriorityContext) -> PrioritySettings | None:
                if ctx.cron_id is not None:
-                    return {"priority": -2}
+                    return {"priority": 2}
                return None
            ```

@@ -50,18 +50,20 @@ class PrioritySettings(typing.TypedDict, total=False):

    Every key is optional: a missing key or a key set to `None` takes its
    default, and returning `None` instead of a dict gives every key its default.
-    A value outside its range, or an empty `fairness_group`, is an error.
+    A `priority` outside -5 to 5, or a `fairness_group` longer than 256
+    characters, is an error.
    """

    priority: int | None
-    """An integer from -5 to 5, where 5 runs first and -5 runs last. Defaults to 0."""
+    """An integer from -5 to 5, where -5 runs first and 5 runs last. Defaults to 0."""

    fairness_group: str | None
-    """The thread's fairness group, a non-empty string. Defaults to `"default"`.
+    """Currently disabled.
+    The thread's fairness group, a string of at most 256 characters.
+
+    Defaults to `"default"`, as does an empty string. It has no effect on run
+    order for now.

    The server stores it unencrypted, even when the deployment uses custom
    encryption, so use an opaque ID rather than personal data.
    """
-
-    fairness_weight: int | None
-    """The weight of the thread's fairness group, an integer from 1 to 100. Defaults to 1."""
@@ -30,18 +30,14 @@ class BytesLineDecoder:
        # See https://docs.python.org/3/glossary.html#term-universal-newlines
        NEWLINE_CHARS = b"\n\r"

-        # We always push a trailing `\r` into the next decode iteration.
-        if self.trailing_cr:
-            text = b"\r" + text
-            self.trailing_cr = False
-        if text.endswith(b"\r"):
-            self.trailing_cr = True
-            text = text[:-1]
+        if not text:
+            return []
+        if self.trailing_cr and text.startswith(b"\n"):
+            text = text[1:]
+        self.trailing_cr = text.endswith(b"\r")

        if not text:
-            # NOTE: the edge case input of empty text doesn't occur in practice,
-            # because other httpx internals filter out this value
-            return []  # pragma: no cover
+            return []

        trailing_newline = text[-1] in NEWLINE_CHARS
        lines = cast(list[BytesLike], text.splitlines())
@@ -66,7 +62,7 @@ class BytesLineDecoder:
        return lines

    def flush(self) -> list[BytesLike]:
-        if not self.buffer and not self.trailing_cr:
+        if not self.buffer:
            return []

        lines: list[BytesLike] = [self.buffer]
@@ -76,40 +72,66 @@ class BytesLineDecoder:


 class SSEDecoder:
-    def __init__(self) -> None:
+    def __init__(self, *, last_event_id: str | None = None) -> None:
        self._event = ""
        self._data = bytearray()
-        self._last_event_id = ""
+        self._last_event_id = last_event_id
        self._retry: int | None = None
+        self._at_stream_start = True
+        self._has_data = False
+        self._id_changed = False
+
+    @property
+    def has_data(self) -> bool:
+        """Whether the last decoded block contained a data field."""
+        return self._has_data

    @property
    def last_event_id(self) -> str | None:
-        """Return the last event identifier that was seen."""
+        """Return the last event identifier that was seen.

-        return self._last_event_id or None
+        `None` until an ID is supplied or received, and `""` after an empty
+        one, which resets the reconnect cursor.
+        """
+
+        return self._last_event_id

    def decode(self, line: bytes) -> StreamPart | None:
        # See: https://html.spec.whatwg.org/multipage/server-sent-events.html#event-stream-interpretation

+        if self._at_stream_start:
+            self._at_stream_start = False
+            line = line.removeprefix(b"\xef\xbb\xbf")
+
        if not line:
+            self._has_data = bool(self._data)
            if (
                not self._event
                and not self._data
-                and not self._last_event_id
+                and not self._id_changed
                and self._retry is None
            ):
                return None

+            body = self._data[:-1]
+            data = None
+            if body and not body.isspace():
+                try:
+                    data = orjson.loads(body)
+                except orjson.JSONDecodeError:
+                    data = orjson.loads(body.decode(errors="replace"))
+
            sse = StreamPart(
                event=self._event,
-                data=orjson.loads(self._data) if self._data else None,  # ty: ignore[invalid-argument-type]
-                id=self.last_event_id,
+                data=data,  # ty: ignore[invalid-argument-type]
+                id=self._last_event_id or None,
            )

            # NOTE: as per the SSE spec, do not reset last_event_id.
            self._event = ""
            self._data = bytearray()
            self._retry = None
+            self._id_changed = False

            return sse

@@ -122,14 +144,16 @@ class SSEDecoder:
            value = value[1:]

        if fieldname == b"event":
-            self._event = value.decode()
+            self._event = value.decode(errors="replace")
        elif fieldname == b"data":
            self._data.extend(value)
+            self._data.extend(b"\n")
        elif fieldname == b"id":
            if b"\0" in value:
                pass
            else:
-                self._last_event_id = value.decode()
+                self._last_event_id = value.decode(errors="replace")
+                self._id_changed = True
        elif fieldname == b"retry":
            with contextlib.suppress(TypeError, ValueError):
                self._retry = int(value)
@@ -15,7 +15,6 @@ from __future__ import annotations
 import asyncio
 import contextlib
 import logging
-import random
 from collections import OrderedDict
 from collections.abc import AsyncGenerator, AsyncIterator, Awaitable, Callable
 from dataclasses import dataclass, field
@@ -23,6 +22,7 @@ from typing import Any

 from langchain_protocol import Event, SubscribeParams

+from langgraph_sdk._shared.utilities import _reconnect_delay
 from langgraph_sdk.stream.transport import AsyncProtocolTransport, EventStreamHandle

 # ---------------------------------------------------------------------------
@@ -275,11 +275,13 @@ class StreamController:

    async def _reconnect_sleep(self, attempt: int) -> None:
        """Sleep with exponential backoff and jitter for reconnect attempt *attempt*."""
-        base = self._reconnect_backoff_base
-        cap = self._reconnect_backoff_cap
-        delay = min(cap, base * (2**attempt))
-        jitter = random.uniform(0, delay * 0.25)
-        await asyncio.sleep(delay + jitter)
+        await asyncio.sleep(
+            _reconnect_delay(
+                attempt,
+                base=self._reconnect_backoff_base,
+                cap=self._reconnect_backoff_cap,
+            )
+        )

    async def _reconnect_shared_stream(self) -> bool:
        """Attempt to reopen the shared stream after a transport drop.
@@ -4,7 +4,6 @@ from __future__ import annotations

 import contextlib
 import logging
-import random
 import threading
 import time
 from dataclasses import dataclass, field
@@ -13,6 +12,7 @@ from typing import Any

 from langchain_protocol import Event, SubscribeParams

+from langgraph_sdk._shared.utilities import _reconnect_delay
 from langgraph_sdk.stream.errors import (
    is_non_retryable_stream_error,
    stream_error_frame,
@@ -282,11 +282,13 @@ class SyncStreamController:

    def _reconnect_sleep(self, attempt: int) -> None:
        """Sleep with exponential backoff + jitter before a reconnect attempt."""
-        base = self._reconnect_backoff_base
-        cap = self._reconnect_backoff_cap
-        delay = min(cap, base * (2**attempt))
-        jitter = random.uniform(0, delay * 0.25)
-        time.sleep(delay + jitter)
+        time.sleep(
+            _reconnect_delay(
+                attempt,
+                base=self._reconnect_backoff_base,
+                cap=self._reconnect_backoff_cap,
+            )
+        )

    def _reconnect_shared_stream(self) -> bool:
        """Attempt to reopen the shared stream after a transport drop.
@@ -0,0 +1,17 @@
+import asyncio
+import time
+
+import pytest
+
+
+@pytest.fixture
+def no_sleep(monkeypatch):
+    """Record backoff sleeps without actually waiting."""
+    sleeps: list[float] = []
+
+    async def fake_async_sleep(d):
+        sleeps.append(d)
+
+    monkeypatch.setattr(asyncio, "sleep", fake_async_sleep)
+    monkeypatch.setattr(time, "sleep", lambda d: sleeps.append(d))
+    return sleeps
@@ -1,7 +1,9 @@
 from __future__ import annotations

+import ast
 import inspect
 import re
+from pathlib import Path

 import pytest

@@ -128,3 +130,45 @@ def test_sync_api_matches_async(async_cls, sync_cls):
            f"Return annotation mismatch for {async_cls.__name__}.{name}: "
            f"async={a_ret}, sync={s_ret}"
        )
+
+
+# Stateless overloads (`thread_id: None`) leave out the thread-only parameters,
+# and stateful ones (`thread_id: str`) leave out `on_completion`, which only
+# applies to stateless runs.
+_RUN_OVERLOAD_OMISSIONS = {
+    "None": {"checkpoint", "checkpoint_id", "multitask_strategy"},
+    "str": {"on_completion"},
+}
+
+
+@pytest.mark.parametrize("client_cls", [RunsClient, SyncRunsClient])
+def test_run_overloads_accept_implementation_params(client_cls) -> None:
+    tree = ast.parse(Path(inspect.getfile(client_cls)).read_text())
+    cls = next(
+        node
+        for node in tree.body
+        if isinstance(node, ast.ClassDef) and node.name == client_cls.__name__
+    )
+    defs = [
+        node
+        for node in cls.body
+        if isinstance(node, (ast.FunctionDef, ast.AsyncFunctionDef))
+        and node.name in {"stream", "create", "wait"}
+    ]
+    impl_params = {
+        node.name: {arg.arg for arg in node.args.kwonlyargs}
+        for node in defs
+        if not node.decorator_list
+    }
+    gaps = []
+    for stub in defs:
+        if not stub.decorator_list:
+            continue
+        thread_id = next(arg for arg in stub.args.args if arg.arg == "thread_id")
+        assert thread_id.annotation is not None
+        kind = ast.unparse(thread_id.annotation)
+        expected = impl_params[stub.name] - _RUN_OVERLOAD_OMISSIONS[kind]
+        if missing := expected - {arg.arg for arg in stub.args.kwonlyargs}:
+            gaps.append(f"{stub.name}(thread_id: {kind}) line {stub.lineno}: {missing}")
+
+    assert not gaps, gaps
@@ -1,8 +1,49 @@
+import ast
+import inspect
+
 import pytest

 from langgraph_sdk import Auth


+@pytest.mark.parametrize(
+    "kwargs",
+    [{}, {"actions": "read"}, {"resources": None}],
+)
+def test_global_handler_factory_accepts_optional_resources(kwargs) -> None:
+    auth = Auth()
+    tree = ast.parse(inspect.getsource(type(auth.on)))
+    cls = tree.body[0]
+    assert isinstance(cls, ast.ClassDef)
+    factory_overload = next(
+        node
+        for node in cls.body
+        if isinstance(node, ast.FunctionDef)
+        and node.name == "__call__"
+        and node.decorator_list
+        and any(arg.arg == "resources" for arg in node.args.kwonlyargs)
+    )
+    resources = next(
+        arg for arg in factory_overload.args.kwonlyargs if arg.arg == "resources"
+    )
+    assert resources.annotation is not None
+    assert ast.unparse(resources.annotation) == "str | Sequence[str] | None"
+    default = factory_overload.args.kw_defaults[0]
+    assert isinstance(default, ast.Constant) and default.value is None
+
+    @auth.on(**kwargs)
+    async def handler(ctx, value):
+        del ctx, value
+        return None
+
+    if kwargs.get("actions"):
+        assert auth._handlers == {("*", "read"): [handler]}
+        assert auth._global_handlers == []
+    else:
+        assert auth._global_handlers == [handler]
+        assert auth._handlers == {}
+
+
 def test_handler_multiple_resources_and_actions() -> None:
    auth = Auth()

@@ -1,10 +1,11 @@
 from __future__ import annotations

-from collections.abc import Iterator, Sequence
+from collections.abc import Callable, Iterator, Sequence
 from pathlib import Path
 from typing import Any

 import httpx
+import orjson
 import pytest
 from typing_extensions import assert_type

@@ -12,6 +13,7 @@ from langgraph_sdk._async.runs import _wrap_stream_v2
 from langgraph_sdk._shared.utilities import _sse_to_v2_dict
 from langgraph_sdk._sync.runs import _wrap_stream_v2_sync
 from langgraph_sdk.client import HttpClient, SyncHttpClient
+from langgraph_sdk.errors import InternalServerError, NotFoundError
 from langgraph_sdk.schema import (
    CheckpointPayload,
    CheckpointsStreamPart,
@@ -110,6 +112,129 @@ def test_stream_sse():
        assert len(parts) == 79


+def test_sse_decoder_joins_data_lines_with_a_newline():
+    decoder = SSEDecoder()
+    for line in (b"data: [1,", b"data: 2]"):
+        decoder.decode(line)
+    assert decoder.decode(b"") == StreamPart(event="", data=[1, 2], id=None)  # ty: ignore[invalid-argument-type]
+
+    for line in (b"data: [1", b"data: 0]"):
+        decoder.decode(line)
+    with pytest.raises(orjson.JSONDecodeError):
+        decoder.decode(b"")
+
+
+def test_sse_decoder_strips_a_leading_bom():
+    decoder = SSEDecoder()
+    for line in (b"\xef\xbb\xbfevent: values", b"data: 1"):
+        decoder.decode(line)
+    assert decoder.decode(b"") == StreamPart(event="values", data=1, id=None)  # ty: ignore[invalid-argument-type]
+
+
+def test_control_blocks_do_not_repeat_after_a_cursor_update():
+    decoder = SSEDecoder()
+    decoder.decode(b"id: cursor")
+    assert decoder.decode(b"") == StreamPart(event="", data=None, id="cursor")  # ty: ignore[invalid-argument-type]
+    decoder.decode(b": heartbeat")
+    assert decoder.decode(b"") is None
+    assert decoder.decode(b"") is None
+    decoder.decode(b"id:")
+    assert decoder.decode(b"") == StreamPart(event="", data=None, id=None)  # ty: ignore[invalid-argument-type]
+    assert decoder.last_event_id == ""
+    assert decoder.decode(b"") is None
+
+
+def test_cr_lines_are_emitted_without_waiting_for_another_chunk():
+    decoder = BytesLineDecoder()
+    assert decoder.decode(b"data: 1\r\r") == [b"data: 1", b""]
+    assert decoder.decode(b"\n") == []
+    assert decoder.decode(b"data: 2\r") == [b"data: 2"]
+    assert decoder.decode(b"") == []
+    assert decoder.decode(b"\n\r") == [b""]
+    assert decoder.flush() == []
+
+
+def test_empty_data_lines_preserve_their_newlines():
+    decoder = SSEDecoder()
+    for line in (b"data", b"data: 1", b"data:"):
+        decoder.decode(line)
+    assert decoder._data == b"\n1\n\n"
+    assert decoder.decode(b"") == StreamPart(event="", data=1, id=None)  # ty: ignore[invalid-argument-type]
+    decoder.decode(b"data:")
+    decoder.decode(b"data:")
+    assert decoder.decode(b"") == StreamPart(event="", data=None, id=None)  # ty: ignore[invalid-argument-type]
+    assert decoder.has_data
+    assert decoder.decode(b"") is None
+    assert not decoder.has_data
+
+
+def test_malformed_utf8_is_replaced_in_fields_and_json_strings():
+    decoder = SSEDecoder()
+    for line in (b"event: \xff", b"id: \xff", b'data: "\xff"'):
+        decoder.decode(line)
+    assert decoder.decode(b"") == StreamPart(event="\ufffd", data="\ufffd", id="\ufffd")  # ty: ignore[invalid-argument-type]
+
+
+@pytest.mark.parametrize("asynchronous", [False, True])
+async def test_null_and_empty_data_are_not_dropped(asynchronous: bool):
+    def handler(_request: httpx.Request) -> httpx.Response:
+        return httpx.Response(
+            200,
+            headers={"Content-Type": "text/event-stream"},
+            content=b"data: null\n\ndata:\n\n",
+        )
+
+    transport = httpx.MockTransport(handler)
+    if asynchronous:
+        async with httpx.AsyncClient(
+            transport=transport, base_url="https://example.com"
+        ) as client:
+            parts = [part async for part in HttpClient(client).stream("/stream", "GET")]
+    else:
+        with httpx.Client(
+            transport=transport, base_url="https://example.com"
+        ) as client:
+            parts = list(SyncHttpClient(client).stream("/stream", "GET"))
+    assert parts == [StreamPart(event="", data=None), StreamPart(event="", data=None)]  # ty: ignore[invalid-argument-type]
+
+
+@pytest.mark.parametrize("asynchronous", [False, True])
+async def test_cursor_is_inherited_after_reconnect(asynchronous: bool):
+    requests: list[httpx.Request] = []
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        requests.append(request)
+        if len(requests) == 1:
+            stream_cls = AsyncListByteStream if asynchronous else ListByteStream
+            return httpx.Response(
+                200,
+                headers={"Content-Type": "text/event-stream", "Location": "/reconnect"},
+                stream=stream_cls(
+                    [b"id: cursor\nevent: values\ndata: 1\n\n"],
+                    httpx.RemoteProtocolError("incomplete chunked read"),
+                ),
+            )
+        assert (b"Last-Event-ID", b"cursor") in request.headers.raw
+        return httpx.Response(
+            200,
+            headers={"Content-Type": "text/event-stream"},
+            content=b"event: values\ndata: 2\n\n",
+        )
+
+    transport = httpx.MockTransport(handler)
+    if asynchronous:
+        async with httpx.AsyncClient(
+            transport=transport, base_url="https://example.com"
+        ) as client:
+            parts = [part async for part in HttpClient(client).stream("/stream", "GET")]
+    else:
+        with httpx.Client(
+            transport=transport, base_url="https://example.com"
+        ) as client:
+            parts = list(SyncHttpClient(client).stream("/stream", "GET"))
+    assert [part.id for part in parts] == ["cursor", "cursor"]
+
+
 # --- HTTP client streaming ---


@@ -156,6 +281,7 @@ def test_sync_http_client_stream_flushes_trailing_event():
    assert parts == [StreamPart(event="foo", data={"bar": 1})]


+@pytest.mark.usefixtures("no_sleep")
 def test_sync_http_client_stream_recovers_after_disconnect():
    reconnect_path = "/reconnect"
    first_chunks = [
@@ -221,6 +347,7 @@ def test_sync_http_client_stream_recovers_after_disconnect():


@pytest.mark.asyncio
+@pytest.mark.usefixtures("no_sleep")
 async def test_http_client_stream_recovers_after_disconnect():
    reconnect_path = "/reconnect"
    first_chunks = [
@@ -292,6 +419,686 @@ async def test_http_client_stream_recovers_after_disconnect():
    ]


+def _drop_after(chunks: list[bytes], stream_cls: type, reconnects: list[httpx.Request]):
+    def handler(request: httpx.Request) -> httpx.Response:
+        if request.method == "POST":
+            return httpx.Response(
+                200,
+                headers={"Content-Type": "text/event-stream", "Location": "/reconnect"},
+                stream=stream_cls(
+                    chunks, httpx.RemoteProtocolError("incomplete chunked read")
+                ),
+            )
+        reconnects.append(request)
+        return httpx.Response(
+            200,
+            headers={"Content-Type": "text/event-stream"},
+            stream=stream_cls([b"event: end\ndata: null\n\n"]),
+        )
+
+    return handler
+
+
+def _sync_reconnect(
+    chunks: list[bytes], headers: dict[str, str] | None
+) -> httpx.Request:
+    reconnects: list[httpx.Request] = []
+    transport = httpx.MockTransport(_drop_after(chunks, ListByteStream, reconnects))
+    with httpx.Client(transport=transport, base_url="https://example.com") as client:
+        list(SyncHttpClient(client).stream("/stream", "POST", json={}, headers=headers))
+    return reconnects[0]
+
+
+async def _async_reconnect(
+    chunks: list[bytes], headers: dict[str, str] | None
+) -> httpx.Request:
+    reconnects: list[httpx.Request] = []
+    transport = httpx.MockTransport(
+        _drop_after(chunks, AsyncListByteStream, reconnects)
+    )
+    async with httpx.AsyncClient(
+        transport=transport, base_url="https://example.com"
+    ) as client:
+        [
+            part
+            async for part in HttpClient(client).stream(
+                "/stream", "POST", json={}, headers=headers
+            )
+        ]
+    return reconnects[0]
+
+
+_EMPTY_IDS = pytest.mark.parametrize(
+    "empty_id",
+    [b"id:\nevent: values\ndata: 2\n\n", b"id:\n\n"],
+    ids=["with-an-event", "alone"],
+)
+_CALLER_CURSORS = pytest.mark.parametrize(
+    "headers",
+    [None, {"Last-Event-ID": "5"}, {"last-event-id": "5"}],
+    ids=["no-caller-cursor", "caller-cursor", "lowercase-caller-cursor"],
+)
+
+
+@_EMPTY_IDS
+@_CALLER_CURSORS
+@pytest.mark.usefixtures("no_sleep")
+def test_sync_stream_reconnects_without_a_cursor_after_an_empty_id(
+    empty_id: bytes, headers: dict[str, str] | None
+):
+    with pytest.warns(UserWarning, match="Last-Event-ID"):
+        reconnect = _sync_reconnect(
+            [b"id: 1\nevent: values\ndata: 1\n\n", empty_id], headers
+        )
+
+    assert "last-event-id" not in reconnect.headers
+
+
+@_EMPTY_IDS
+@_CALLER_CURSORS
+@pytest.mark.usefixtures("no_sleep")
+async def test_async_stream_reconnects_without_a_cursor_after_an_empty_id(
+    empty_id: bytes, headers: dict[str, str] | None
+):
+    with pytest.warns(UserWarning, match="Last-Event-ID"):
+        reconnect = await _async_reconnect(
+            [b"id: 1\nevent: values\ndata: 1\n\n", empty_id], headers
+        )
+
+    assert "last-event-id" not in reconnect.headers
+
+
+@pytest.mark.usefixtures("no_sleep")
+def test_sync_stream_id_replaces_a_lowercase_caller_cursor():
+    reconnect = _sync_reconnect(
+        [b"id: 1\nevent: values\ndata: 1\n\n"], {"last-event-id": "5"}
+    )
+
+    assert reconnect.headers.get_list("last-event-id") == ["1"]
+
+
+@pytest.mark.usefixtures("no_sleep")
+async def test_async_stream_id_replaces_a_lowercase_caller_cursor():
+    reconnect = await _async_reconnect(
+        [b"id: 1\nevent: values\ndata: 1\n\n"], {"last-event-id": "5"}
+    )
+
+    assert reconnect.headers.get_list("last-event-id") == ["1"]
+
+
+@pytest.mark.usefixtures("no_sleep")
+def test_sync_stream_keeps_the_caller_cursor_until_the_stream_sends_an_id():
+    reconnect = _sync_reconnect([b"event: values\ndata: 1\n\n"], {"Last-Event-ID": "5"})
+
+    assert reconnect.headers.get_list("last-event-id") == ["5"]
+
+
+@pytest.mark.usefixtures("no_sleep")
+async def test_async_stream_keeps_the_caller_cursor_until_the_stream_sends_an_id():
+    reconnect = await _async_reconnect(
+        [b"event: values\ndata: 1\n\n"], {"Last-Event-ID": "5"}
+    )
+
+    assert reconnect.headers.get_list("last-event-id") == ["5"]
+
+
+# A reconnect that sends no Last-Event-ID can't replay what was sent while it was
+# disconnected, so it warns.
+_RECONNECT_CURSORS = pytest.mark.parametrize(
+    ("chunks", "headers", "warns"),
+    [
+        ([b"event: values\ndata: 1\n\n"], None, True),
+        ([b"id: 1\nevent: values\ndata: 1\n\n"], None, False),
+        ([b"event: values\ndata: 1\n\n"], {"Last-Event-ID": "5"}, False),
+    ],
+    ids=["no-cursor", "stream-cursor", "caller-cursor"],
+)
+
+
+@_RECONNECT_CURSORS
+@pytest.mark.usefixtures("no_sleep")
+def test_sync_reconnect_warns_only_without_a_cursor(
+    chunks: list[bytes],
+    headers: dict[str, str] | None,
+    warns: bool,
+    recwarn: pytest.WarningsRecorder,
+):
+    _sync_reconnect(chunks, headers)
+
+    assert any("Last-Event-ID" in str(w.message) for w in recwarn) is warns
+
+
+@_RECONNECT_CURSORS
+@pytest.mark.usefixtures("no_sleep")
+async def test_async_reconnect_warns_only_without_a_cursor(
+    chunks: list[bytes],
+    headers: dict[str, str] | None,
+    warns: bool,
+    recwarn: pytest.WarningsRecorder,
+):
+    await _async_reconnect(chunks, headers)
+
+    assert any("Last-Event-ID" in str(w.message) for w in recwarn) is warns
+
+
+# --- reconnects survive a server restart or a deploy ---
+
+SSE = {"Content-Type": "text/event-stream"}
+DROP = httpx.RemoteProtocolError("incomplete chunked read")
+
+
+def _event(i: int) -> bytes:
+    return f"id: {i}\nevent: values\ndata: {i}\n\n".encode()
+
+
+def _scripted(steps: list[Callable[[httpx.Request], httpx.Response]]):
+    """Handler that plays one step per request and records each request."""
+    seen: list[httpx.Request] = []
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        seen.append(request)
+        if len(seen) > len(steps):
+            raise AssertionError("unexpected request")
+        return steps[len(seen) - 1](request)
+
+    return handler, seen
+
+
+def _ok(stream_cls, chunks, *, drop=False, location=None):
+    headers = dict(SSE)
+    if location:
+        headers["Location"] = location
+
+    def step(_request):
+        return httpx.Response(
+            200, headers=headers, stream=stream_cls(chunks, DROP if drop else None)
+        )
+
+    return step
+
+
+def _status(code):
+    return lambda request: httpx.Response(
+        code, json={"detail": "upstream"}, request=request
+    )
+
+
+def _connect_error(request):
+    raise httpx.ConnectError("[Errno 61] Connection refused", request=request)
+
+
+def _not_sse(request):
+    return httpx.Response(
+        200, headers={"Content-Type": "text/html"}, text="<html>", request=request
+    )
+
+
+def _transient_steps(stream_cls, failure):
+    """POST drops after event 1; first reconnect fails; second succeeds."""
+    return [
+        _ok(stream_cls, [_event(1)], drop=True, location="/reconnect"),
+        failure,
+        _ok(stream_cls, [_event(2), b"event: end\ndata: null\n\n"]),
+    ]
+
+
+def _long_stream_steps(stream_cls, drops):
+    """POST + `drops` reconnects, each delivering one event then dropping."""
+    steps = [_ok(stream_cls, [_event(0)], drop=True, location="/reconnect")]
+    for i in range(1, drops):
+        steps.append(_ok(stream_cls, [_event(i)], drop=True))
+    steps.append(_ok(stream_cls, [_event(drops), b"event: end\ndata: null\n\n"]))
+    return steps
+
+
+def _run_sync(steps, headers=None):
+    handler, seen = _scripted(steps)
+    with httpx.Client(
+        transport=httpx.MockTransport(handler), base_url="https://example.com"
+    ) as client:
+        parts = list(
+            SyncHttpClient(client).stream("/stream", "POST", json={}, headers=headers)
+        )
+    return parts, seen
+
+
+async def _run_async(steps, headers=None):
+    sync_handler, seen = _scripted(steps)
+
+    async def handler(request):
+        return sync_handler(request)
+
+    async with httpx.AsyncClient(
+        transport=httpx.MockTransport(handler), base_url="https://example.com"
+    ) as client:
+        parts = [
+            p
+            async for p in HttpClient(client).stream(
+                "/stream", "POST", json={}, headers=headers
+            )
+        ]
+    return parts, seen
+
+
+FAILURES = {
+    "429": _status(429),
+    "502": _status(502),
+    "503": _status(503),
+    "connect_error": _connect_error,
+    "not_sse": _not_sse,
+}
+
+
+# A reconnect that hits a 429 / 502 / 503 / connect error / non-SSE body, then
+# succeeds, should recover.
+
+
+@pytest.mark.usefixtures("no_sleep")
+@pytest.mark.parametrize("failure", FAILURES.values(), ids=FAILURES.keys())
+def test_sync_reconnect_recovers_from_transient_failure(failure):
+    parts, seen = _run_sync(_transient_steps(ListByteStream, failure))
+    assert [p.event for p in parts] == ["values", "values", "end"]
+    assert len(seen) == 3
+
+
+@pytest.mark.usefixtures("no_sleep")
+@pytest.mark.parametrize("failure", FAILURES.values(), ids=FAILURES.keys())
+async def test_async_reconnect_recovers_from_transient_failure(failure):
+    parts, seen = await _run_async(_transient_steps(AsyncListByteStream, failure))
+    assert [p.event for p in parts] == ["values", "values", "end"]
+    assert len(seen) == 3
+
+
+# Any other 4xx on a reconnect won't go away by retrying, so it raises.
+
+
+def _client_error_steps(stream_cls):
+    return [
+        _ok(stream_cls, [_event(1)], drop=True, location="/reconnect"),
+        _status(404),
+    ]
+
+
+@pytest.mark.usefixtures("no_sleep")
+def test_sync_reconnect_does_not_retry_a_client_error():
+    with pytest.raises(NotFoundError):
+        _run_sync(_client_error_steps(ListByteStream))
+
+
+@pytest.mark.usefixtures("no_sleep")
+async def test_async_reconnect_does_not_retry_a_client_error():
+    with pytest.raises(NotFoundError):
+        await _run_async(_client_error_steps(AsyncListByteStream))
+
+
+# The first request isn't a reconnect, so it raises even when it names a Location.
+
+
+def _first_request_503(request):
+    return httpx.Response(
+        503,
+        headers={"Location": "/reconnect"},
+        json={"detail": "upstream"},
+        request=request,
+    )
+
+
+@pytest.mark.usefixtures("no_sleep")
+def test_sync_first_request_failure_is_not_retried():
+    with pytest.raises(InternalServerError):
+        _run_sync([_first_request_503])
+
+
+@pytest.mark.usefixtures("no_sleep")
+async def test_async_first_request_failure_is_not_retried():
+    with pytest.raises(InternalServerError):
+        await _run_async([_first_request_503])
+
+
+# A server that stays down gets five reconnects, backing off 1, 2, 4, 5 and 5s
+# (each plus up to 25% jitter), so about 20s, before the stream gives up. The
+# error it gives up with is caused by the last failure, so callers see why.
+
+GIVE_UP = "Exceeded maximum SSE reconnection attempts"
+
+
+def _server_down_steps(stream_cls):
+    return [
+        _ok(stream_cls, [_event(1)], drop=True, location="/reconnect"),
+        *[_status(502)] * 5,
+    ]
+
+
+def _assert_backed_off_for_about_20s(sleeps: list[float]) -> None:
+    assert len(sleeps) == 5
+    for slept, delay in zip(sleeps, [1, 2, 4, 5, 5], strict=True):
+        assert delay <= slept <= delay * 1.25
+
+
+def test_sync_reconnect_gives_up_after_five_backed_off_attempts(no_sleep):
+    with pytest.raises(httpx.TransportError, match=GIVE_UP) as exc_info:
+        _run_sync(_server_down_steps(ListByteStream))
+    assert isinstance(exc_info.value.__cause__, InternalServerError)
+    _assert_backed_off_for_about_20s(no_sleep)
+
+
+async def test_async_reconnect_gives_up_after_five_backed_off_attempts(no_sleep):
+    with pytest.raises(httpx.TransportError, match=GIVE_UP) as exc_info:
+        await _run_async(_server_down_steps(AsyncListByteStream))
+    assert isinstance(exc_info.value.__cause__, InternalServerError)
+    _assert_backed_off_for_about_20s(no_sleep)
+
+
+# A long stream that drops 6 times, each reconnect succeeding and making
+# progress, should not run out of attempts.
+
+
+@pytest.mark.usefixtures("no_sleep")
+def test_sync_long_stream_survives_many_spaced_out_drops():
+    parts, _ = _run_sync(_long_stream_steps(ListByteStream, drops=6))
+    assert [p.data for p in parts] == [0, 1, 2, 3, 4, 5, 6, None]
+
+
+@pytest.mark.usefixtures("no_sleep")
+async def test_async_long_stream_survives_many_spaced_out_drops():
+    parts, _ = await _run_async(_long_stream_steps(AsyncListByteStream, drops=6))
+    assert [p.data for p in parts] == [0, 1, 2, 3, 4, 5, 6, None]
+
+
+# Each reconnect resumes after the newest event the stream got, so a reconnect
+# loop on a resumable run replays only what it missed. A failed reconnect keeps
+# the cursor for the next one.
+RECONNECT_LOOPS = {
+    "progress_between_drops": (
+        lambda stream_cls: _long_stream_steps(stream_cls, drops=3),
+        [None, "0", "1", "2"],
+    ),
+    "failed_reconnect": (
+        lambda stream_cls: _transient_steps(stream_cls, _status(502)),
+        [None, "1", "1"],
+    ),
+}
+
+
+@pytest.mark.usefixtures("no_sleep")
+@pytest.mark.parametrize(
+    ("steps", "cursors"), RECONNECT_LOOPS.values(), ids=RECONNECT_LOOPS.keys()
+)
+def test_sync_reconnect_loop_resumes_after_the_newest_event(steps, cursors):
+    _, seen = _run_sync(steps(ListByteStream))
+    assert [r.headers.get("last-event-id") for r in seen] == cursors
+
+
+@pytest.mark.usefixtures("no_sleep")
+@pytest.mark.parametrize(
+    ("steps", "cursors"), RECONNECT_LOOPS.values(), ids=RECONNECT_LOOPS.keys()
+)
+async def test_async_reconnect_loop_resumes_after_the_newest_event(steps, cursors):
+    _, seen = await _run_async(steps(AsyncListByteStream))
+    assert [r.headers.get("last-event-id") for r in seen] == cursors
+
+
+# Reconnects should back off rather than hammer the server.
+
+
+def test_sync_reconnect_backs_off(no_sleep):
+    _run_sync(_long_stream_steps(ListByteStream, drops=2))
+    assert len(no_sleep) == 2 and all(d > 0 for d in no_sleep)
+
+
+async def test_async_reconnect_backs_off(no_sleep):
+    await _run_async(_long_stream_steps(AsyncListByteStream, drops=2))
+    assert len(no_sleep) == 2 and all(d > 0 for d in no_sleep)
+
+
+# --- a run stream that closes cleanly before the run ends ---
+
+RUN_STREAM = "/threads/t1/runs/r1/stream"
+RUN = "/threads/t1/runs/r1"
+END = b"event: end\ndata: null\n\n"
+
+Step = Callable[[httpx.Request], httpx.Response]
+
+
+def _run_status(status: str) -> Step:
+    return lambda request: httpx.Response(200, json={"status": status}, request=request)
+
+
+def _clean_close_steps(stream_cls: type, closes: int, check: Step) -> list[Step]:
+    steps = [_ok(stream_cls, [_event(0)], location=RUN_STREAM)]
+    for i in range(1, closes + 1):
+        steps += [check, _ok(stream_cls, [_event(i)])]
+    return [*steps, _run_status("success")]
+
+
+def _stalled_steps(stream_cls: type) -> list[Step]:
+    return [
+        _ok(stream_cls, [_event(1)], location=RUN_STREAM),
+        *[_run_status("running"), _ok(stream_cls, [])] * 5,
+        _run_status("running"),
+    ]
+
+
+def _requests(seen: list[httpx.Request]) -> list[tuple[str, str, str | None]]:
+    return [(r.method, r.url.path, r.headers.get("last-event-id")) for r in seen]
+
+
+RESUMED = [
+    ("POST", "/stream", None),
+    ("GET", RUN, None),
+    ("GET", RUN_STREAM, "0"),
+    ("GET", RUN, None),
+]
+
+
+CHECKS_THAT_RECONNECT = {
+    "pending": _run_status("pending"),
+    "running": _run_status("running"),
+    "429": _status(429),
+    "503": _status(503),
+    "connect_error": _connect_error,
+}
+
+
+@pytest.mark.parametrize(
+    "check", CHECKS_THAT_RECONNECT.values(), ids=CHECKS_THAT_RECONNECT.keys()
+)
+def test_sync_clean_close_reconnects_after_check(check: Step, no_sleep: list[float]):
+    parts, seen = _run_sync(_clean_close_steps(ListByteStream, 1, check))
+    assert [p.data for p in parts] == [0, 1]
+    assert _requests(seen) == RESUMED
+    assert len(no_sleep) == 1
+
+
+@pytest.mark.parametrize(
+    "check", CHECKS_THAT_RECONNECT.values(), ids=CHECKS_THAT_RECONNECT.keys()
+)
+async def test_async_clean_close_reconnects_after_check(
+    check: Step, no_sleep: list[float]
+):
+    parts, seen = await _run_async(_clean_close_steps(AsyncListByteStream, 1, check))
+    assert [p.data for p in parts] == [0, 1]
+    assert _requests(seen) == RESUMED
+    assert len(no_sleep) == 1
+
+
+@pytest.mark.usefixtures("no_sleep")
+def test_sync_clean_closes_with_progress_do_not_run_out_of_attempts():
+    parts, _ = _run_sync(_clean_close_steps(ListByteStream, 6, _run_status("running")))
+    assert [p.data for p in parts] == [0, 1, 2, 3, 4, 5, 6]
+
+
+@pytest.mark.usefixtures("no_sleep")
+async def test_async_clean_closes_with_progress_do_not_run_out_of_attempts():
+    parts, _ = await _run_async(
+        _clean_close_steps(AsyncListByteStream, 6, _run_status("running"))
+    )
+    assert [p.data for p in parts] == [0, 1, 2, 3, 4, 5, 6]
+
+
+CHECKS_THAT_END = {
+    "success": _run_status("success"),
+    "error": _run_status("error"),
+    "timeout": _run_status("timeout"),
+    "interrupted": _run_status("interrupted"),
+    "403": _status(403),
+    "404": _status(404),
+    "not_json": _not_sse,
+    "json_without_status": lambda request: httpx.Response(
+        200, json={}, request=request
+    ),
+}
+CHECKED = [("POST", "/stream", None), ("GET", RUN, None)]
+
+
+@pytest.mark.usefixtures("no_sleep")
+@pytest.mark.parametrize("check", CHECKS_THAT_END.values(), ids=CHECKS_THAT_END.keys())
+def test_sync_clean_close_ends_the_stream_after_check(check: Step):
+    parts, seen = _run_sync(
+        [_ok(ListByteStream, [_event(1)], location=RUN_STREAM), check]
+    )
+    assert [p.data for p in parts] == [1]
+    assert _requests(seen) == CHECKED
+
+
+@pytest.mark.usefixtures("no_sleep")
+@pytest.mark.parametrize("check", CHECKS_THAT_END.values(), ids=CHECKS_THAT_END.keys())
+async def test_async_clean_close_ends_the_stream_after_check(check: Step):
+    parts, seen = await _run_async(
+        [_ok(AsyncListByteStream, [_event(1)], location=RUN_STREAM), check]
+    )
+    assert [p.data for p in parts] == [1]
+    assert _requests(seen) == CHECKED
+
+
+NO_CHECK = {
+    "end": lambda s: [_ok(s, [_event(1), END], location=RUN_STREAM)],
+    "error": lambda s: [
+        _ok(s, [_event(1), b"event: error\ndata: {}\n\n"], location=RUN_STREAM)
+    ],
+    "unterminated_end": lambda s: [
+        _ok(s, [_event(1), b"event: end\ndata: null\n"], location=RUN_STREAM)
+    ],
+    "end_on_an_earlier_connection": lambda s: [
+        _ok(s, [_event(1), END], drop=True, location=RUN_STREAM),
+        _ok(s, []),
+    ],
+    "thread_stream": lambda s: [_ok(s, [_event(1)], location="/threads/t1/stream")],
+    "threadless_run_location": lambda s: [
+        _ok(s, [_event(1)], location="/runs/r1/stream")
+    ],
+}
+
+
+@pytest.mark.usefixtures("no_sleep")
+@pytest.mark.parametrize("steps", NO_CHECK.values(), ids=NO_CHECK.keys())
+def test_sync_stream_ends_without_a_run_check(steps: Callable[[type], list[Step]]):
+    _, seen = _run_sync(steps(ListByteStream))
+    assert [r.url.path for r in seen if not r.url.path.endswith("/stream")] == []
+
+
+@pytest.mark.usefixtures("no_sleep")
+@pytest.mark.parametrize("steps", NO_CHECK.values(), ids=NO_CHECK.keys())
+async def test_async_stream_ends_without_a_run_check(
+    steps: Callable[[type], list[Step]],
+):
+    _, seen = await _run_async(steps(AsyncListByteStream))
+    assert [r.url.path for r in seen if not r.url.path.endswith("/stream")] == []
+
+
+def test_sync_clean_closes_without_progress_give_up_after_five_attempts(
+    no_sleep: list[float],
+):
+    with pytest.raises(httpx.TransportError, match=GIVE_UP) as exc_info:
+        _run_sync(_stalled_steps(ListByteStream))
+    assert "still pending or running" in str(exc_info.value.__cause__)
+    _assert_backed_off_for_about_20s(no_sleep)
+
+
+async def test_async_clean_closes_without_progress_give_up_after_five_attempts(
+    no_sleep: list[float],
+):
+    with pytest.raises(httpx.TransportError, match=GIVE_UP) as exc_info:
+        await _run_async(_stalled_steps(AsyncListByteStream))
+    assert "still pending or running" in str(exc_info.value.__cause__)
+    _assert_backed_off_for_about_20s(no_sleep)
+
+
+CHECK_URLS = {
+    "path": ("/threads/t1/runs/r1/stream", "https://example.com/threads/t1/runs/r1"),
+    "prefix_and_query": (
+        "/api/threads/t1/runs/r1/stream?stream_mode=values",
+        "https://example.com/api/threads/t1/runs/r1",
+    ),
+    "absolute": (
+        "https://example.com/threads/t1/runs/r1/stream",
+        "https://example.com/threads/t1/runs/r1",
+    ),
+}
+
+
+@pytest.mark.usefixtures("no_sleep")
+@pytest.mark.parametrize(
+    ("location", "url"), CHECK_URLS.values(), ids=CHECK_URLS.keys()
+)
+def test_sync_run_check_gets_the_run_behind_the_stream_location(
+    location: str, url: str
+):
+    _, seen = _run_sync(
+        [_ok(ListByteStream, [_event(1)], location=location), _run_status("success")]
+    )
+    assert str(seen[-1].url) == url
+
+
+@pytest.mark.usefixtures("no_sleep")
+@pytest.mark.parametrize(
+    ("location", "url"), CHECK_URLS.values(), ids=CHECK_URLS.keys()
+)
+async def test_async_run_check_gets_the_run_behind_the_stream_location(
+    location: str, url: str
+):
+    _, seen = await _run_async(
+        [
+            _ok(AsyncListByteStream, [_event(1)], location=location),
+            _run_status("success"),
+        ]
+    )
+    assert str(seen[-1].url) == url
+
+
+CALLER_HEADERS = {"Authorization": "Bearer token", "Last-Event-ID": "0"}
+BODY_AND_CURSOR_HEADERS = {"content-type", "content-length", "last-event-id"}
+
+
+def _assert_run_check_headers(seen: list[httpx.Request]) -> None:
+    check = seen[-1]
+    assert check.url.path == RUN
+    assert check.headers["authorization"] == "Bearer token"
+    assert check.headers["accept"] == "application/json"
+    assert check.headers.keys() & BODY_AND_CURSOR_HEADERS == set()
+
+
+@pytest.mark.usefixtures("no_sleep")
+def test_sync_run_check_sends_caller_headers_and_accepts_json_without_body_or_cursor():
+    _, seen = _run_sync(
+        [_ok(ListByteStream, [_event(1)], location=RUN_STREAM), _run_status("success")],
+        headers=CALLER_HEADERS,
+    )
+    _assert_run_check_headers(seen)
+
+
+@pytest.mark.usefixtures("no_sleep")
+async def test_async_run_check_sends_caller_headers_and_accepts_json_without_body_or_cursor():
+    _, seen = await _run_async(
+        [
+            _ok(AsyncListByteStream, [_event(1)], location=RUN_STREAM),
+            _run_status("success"),
+        ],
+        headers=CALLER_HEADERS,
+    )
+    _assert_run_check_headers(seen)
+
+
 # --- _sse_to_v2_dict conversion ---


@@ -120,9 +120,5 @@ def test_context_is_frozen():


 def test_every_settings_key_is_optional():
-    assert PrioritySettings.__optional_keys__ == {
-        "priority",
-        "fairness_group",
-        "fairness_weight",
-    }
+    assert PrioritySettings.__optional_keys__ == {"priority", "fairness_group"}
    assert PrioritySettings.__required_keys__ == frozenset()
@@ -0,0 +1,214 @@
+from __future__ import annotations
+
+import json
+from collections.abc import AsyncIterator, Callable, Iterator, Sequence
+from typing import Any
+
+import httpx
+import pytest
+
+from langgraph_sdk.client import (
+    HttpClient,
+    RunsClient,
+    SyncHttpClient,
+    SyncRunsClient,
+)
+
+
+class _BodyDropsMidRead(httpx.SyncByteStream, httpx.AsyncByteStream):
+    def __iter__(self) -> Iterator[bytes]:
+        yield b'{"partial'
+        raise httpx.ReadError("connection dropped")
+
+    async def __aiter__(self) -> AsyncIterator[bytes]:
+        yield b'{"partial'
+        raise httpx.ReadError("connection dropped")
+
+
+def _done(_request: httpx.Request) -> httpx.Response:
+    return httpx.Response(200, json={"done": True})
+
+
+def _wait_handler(
+    requests: list[httpx.Request],
+    reconnects: Sequence[Callable[[httpx.Request], httpx.Response]] = (_done,),
+):
+    """POST drops mid-body; the reconnects answer from `reconnects` in order."""
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        requests.append(request)
+        if request.method == "POST":
+            return httpx.Response(
+                200,
+                headers={"Location": "/threads/t1/runs/r1/join"},
+                stream=_BodyDropsMidRead(),
+            )
+        return reconnects[len(requests) - 2](request)
+
+    return handler
+
+
+def _assert_bodyless_get(request: httpx.Request) -> None:
+    assert request.method == "GET"
+    assert request.url.path == "/threads/t1/runs/r1/join"
+    assert "content-length" not in request.headers, request.headers
+    assert "content-type" not in request.headers, request.headers
+    assert request.read() == b""
+
+
+@pytest.mark.usefixtures("no_sleep")
+def test_sync_wait_reconnects_with_a_bodyless_get():
+    requests: list[httpx.Request] = []
+    transport = httpx.MockTransport(_wait_handler(requests))
+    with httpx.Client(transport=transport, base_url="https://example.com") as client:
+        runs = SyncRunsClient(SyncHttpClient(client))
+        with pytest.warns(UserWarning, match="attempting reconnect"):
+            result = runs.wait("t1", "agent", input={"question": "hi"})
+
+    assert result == {"done": True}
+    _assert_bodyless_get(requests[1])
+
+
+@pytest.mark.usefixtures("no_sleep")
+async def test_async_wait_reconnects_with_a_bodyless_get():
+    requests: list[httpx.Request] = []
+    transport = httpx.MockTransport(_wait_handler(requests))
+    async with httpx.AsyncClient(
+        transport=transport, base_url="https://example.com"
+    ) as client:
+        runs = RunsClient(HttpClient(client))
+        with pytest.warns(UserWarning, match="attempting reconnect"):
+            result = await runs.wait("t1", "agent", input={"question": "hi"})
+
+    assert result == {"done": True}
+    _assert_bodyless_get(requests[1])
+
+
+def _connect_error(request: httpx.Request) -> httpx.Response:
+    raise httpx.ConnectError("[Errno 61] Connection refused", request=request)
+
+
+async def _wait(
+    handler: Callable[[httpx.Request], httpx.Response], *, asynchronous: bool
+) -> Any:
+    transport = httpx.MockTransport(handler)
+    if asynchronous:
+        async with httpx.AsyncClient(
+            transport=transport, base_url="https://example.com"
+        ) as client:
+            return await RunsClient(HttpClient(client)).wait("t1", "agent", input={})
+    with httpx.Client(transport=transport, base_url="https://example.com") as client:
+        return SyncRunsClient(SyncHttpClient(client)).wait("t1", "agent", input={})
+
+
+# What a server restart or a deploy looks like to the reconnect GET: each one is
+# retried after a backoff.
+RECONNECT_FAILURES = {
+    "429": lambda request: httpx.Response(429, request=request),
+    "503": lambda request: httpx.Response(503, request=request),
+    "connect_error": _connect_error,
+    "body_drops": lambda _request: httpx.Response(
+        200,
+        headers={"Location": "/threads/t1/runs/r1/join"},
+        stream=_BodyDropsMidRead(),
+    ),
+}
+
+
+@pytest.mark.parametrize("asynchronous", [False, True])
+@pytest.mark.parametrize(
+    "failure", RECONNECT_FAILURES.values(), ids=RECONNECT_FAILURES.keys()
+)
+async def test_wait_retries_a_failed_reconnect_after_a_backoff(
+    failure, asynchronous, no_sleep
+):
+    requests: list[httpx.Request] = []
+    with pytest.warns(UserWarning, match="attempting reconnect"):
+        result = await _wait(
+            _wait_handler(requests, [failure, _done]), asynchronous=asynchronous
+        )
+
+    assert result == {"done": True}
+    assert len(requests) == 3
+    assert len(no_sleep) == 2 and min(no_sleep) >= 1, no_sleep
+
+
+@pytest.mark.usefixtures("no_sleep")
+@pytest.mark.parametrize("asynchronous", [False, True])
+async def test_wait_raises_after_five_failed_reconnects(asynchronous):
+    requests: list[httpx.Request] = []
+    with (
+        pytest.warns(UserWarning, match="attempting reconnect"),
+        pytest.raises(httpx.HTTPStatusError, match="503"),
+    ):
+        await _wait(
+            _wait_handler(requests, [RECONNECT_FAILURES["503"]] * 5),
+            asynchronous=asynchronous,
+        )
+
+    assert len(requests) == 6
+
+
+@pytest.mark.usefixtures("no_sleep")
+@pytest.mark.parametrize("asynchronous", [False, True])
+async def test_wait_does_not_retry_a_client_error(asynchronous):
+    requests: list[httpx.Request] = []
+    with (
+        pytest.warns(UserWarning, match="attempting reconnect"),
+        pytest.raises(httpx.HTTPStatusError, match="404"),
+    ):
+        await _wait(
+            _wait_handler(
+                requests, [lambda request: httpx.Response(404, request=request)]
+            ),
+            asynchronous=asynchronous,
+        )
+
+    assert len(requests) == 2
+
+
+def test_sync_wait_raises_the_run_error():
+    requests: list[httpx.Request] = []
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        requests.append(request)
+        return httpx.Response(
+            200, json={"__error__": {"error": "RuntimeError", "message": "boom"}}
+        )
+
+    transport = httpx.MockTransport(handler)
+    with httpx.Client(transport=transport, base_url="https://example.com") as client:
+        runs = SyncRunsClient(SyncHttpClient(client))
+        with pytest.raises(Exception, match="RuntimeError: boom"):
+            runs.wait("t1", "agent", input={}, raise_error=True)
+
+    assert "raise_error" not in json.loads(requests[0].content)
+
+
+@pytest.mark.parametrize("asynchronous", [False, True])
+async def test_wait_returns_the_run_error_without_raise_error(asynchronous):
+    requests: list[httpx.Request] = []
+    run_error = {"__error__": {"error": "RuntimeError", "message": "boom"}}
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        requests.append(request)
+        return httpx.Response(200, json=run_error)
+
+    transport = httpx.MockTransport(handler)
+    if asynchronous:
+        async with httpx.AsyncClient(
+            transport=transport, base_url="https://example.com"
+        ) as client:
+            result = await RunsClient(HttpClient(client)).wait(
+                "t1", "agent", input={}, raise_error=False
+            )
+    else:
+        with httpx.Client(
+            transport=transport, base_url="https://example.com"
+        ) as client:
+            result = SyncRunsClient(SyncHttpClient(client)).wait(
+                "t1", "agent", input={}, raise_error=False
+            )
+
+    assert result == run_error
+    assert "raise_error" not in json.loads(requests[0].content)
@@ -301,7 +301,7 @@ wheels = [

 [[package]]
 name = "langgraph"
-version = "1.2.17"
+version = "1.2.19"
 source = { editable = "../langgraph" }
 dependencies = [
    { name = "langchain-core" },
@@ -385,7 +385,7 @@ test = [

 [[package]]
 name = "langgraph-checkpoint"
-version = "4.3.0"
+version = "4.3.1"
 source = { editable = "../checkpoint" }
 dependencies = [
    { name = "langchain-core" },