fix: keep LANGSERVE_GRAPHS, LANGGRAPH_UI, LANGGRAPH_UI_CONFIG as individual ENV lines

JS build/runtime scripts (build.mts, client.mts, preload.mjs) read these env vars directly, so they must remain as individual Dockerfile ENV lines alongside AGENT_SERVER_CONFIG. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
feat(cli): emit unified AGENT_SERVER_CONFIG env var in Dockerfiles
2026-08-27 01:52:25 +02:00 · 2026-02-25 04:30:26 +00:00 · 2026-02-25 04:16:09 +00:00
45 changed files with 450 additions and 3954 deletions
@@ -40,12 +40,11 @@ jobs:
      - uses: actions/checkout@v6
      - name: Get changed files
        id: changed-files
-        if: github.event_name != 'workflow_dispatch'
        uses: Ana06/get-changed-files@v2.3.0
        with:
          filter: "libs/cli/**"
      - name: Set up Python ${{ matrix.python-version }}
-        if: (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch')
+        if: steps.changed-files.outputs.all
        uses: astral-sh/setup-uv@v7
        with:
          python-version: ${{ matrix.python-version }}
@@ -53,15 +52,15 @@ jobs:
          cache-suffix: "cli-integration-test"
          ignore-nothing-to-cache: true
      - name: Install cli globally
-        if: (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch')
+        if: steps.changed-files.outputs.all
        run: pip install -e .
      - name: Build service ${{ matrix.example.name }}
-        if: (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch')
+        if: steps.changed-files.outputs.all
        working-directory: ${{ matrix.example.workdir }}
        run: |
          langgraph build -t ${{ matrix.example.tag }}
      - name: Test service ${{ matrix.example.name }}
-        if: ${{ (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch') &&env.HAS_LANGSMITH_API_KEY == 'true' }}
+        if: ${{ steps.changed-files.outputs.all && env.HAS_LANGSMITH_API_KEY == 'true' }}
        working-directory: ${{ matrix.example.workdir }}
        env:
          LANGSMITH_API_KEY: ${{ secrets.LANGSMITH_API_KEY }}
@@ -75,24 +74,24 @@ jobs:
          timeout 60 python "$REPO_ROOT/.github/scripts/run_langgraph_cli_test.py" -t ${{ matrix.example.tag }}

      - name: Build JS service
-        if: ${{ (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch') &&matrix.example.name == 'A' }}
+        if: ${{ steps.changed-files.outputs.all && matrix.example.name == 'A' }}
        working-directory: libs/cli/js-examples
        run: |
          langgraph build -t langgraph-test-e

      - name: Build JS monorepo service
-        if: ${{ (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch') &&matrix.example.name == 'A' }}
+        if: ${{ steps.changed-files.outputs.all && matrix.example.name == 'A' }}
        working-directory: libs/cli/js-monorepo-example
        run: |
          langgraph build -t langgraph-test-f -c apps/agent/langgraph.json --build-command "yarn run turbo build" --install-command "yarn install"

      - name: Build Python monorepo service
-        if: ${{ (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch') &&matrix.example.name == 'A' }}
+        if: ${{ steps.changed-files.outputs.all && matrix.example.name == 'A' }}
        working-directory: libs/cli/python-monorepo-example
        run: |
          langgraph build -t langgraph-test-g -c apps/agent/langgraph.json
      - name: Test Python monorepo service
-        if: ${{ (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch') &&matrix.example.name == 'A' && env.HAS_LANGSMITH_API_KEY == 'true' }}
+        if: ${{ steps.changed-files.outputs.all && matrix.example.name == 'A' && env.HAS_LANGSMITH_API_KEY == 'true' }}
        working-directory: libs/cli/python-monorepo-example
        env:
          LANGSMITH_API_KEY: ${{ secrets.LANGSMITH_API_KEY }}
@@ -102,12 +101,12 @@ jobs:
          timeout 60 python ../../../.github/scripts/run_langgraph_cli_test.py -t langgraph-test-g -c apps/agent/langgraph.json

      - name: Build prerelease reqs service
-        if: ${{ (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch') &&matrix.example.name == 'A' }}
+        if: ${{ steps.changed-files.outputs.all && matrix.example.name == 'A' }}
        working-directory: libs/cli/examples/graph_prerelease_reqs
        run: |
          langgraph build -t langgraph-test-h
      - name: Test prerelease reqs service
-        if: ${{ (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch') &&matrix.example.name == 'A' && env.HAS_LANGSMITH_API_KEY == 'true' }}
+        if: ${{ steps.changed-files.outputs.all && matrix.example.name == 'A' && env.HAS_LANGSMITH_API_KEY == 'true' }}
        working-directory: libs/cli/examples/graph_prerelease_reqs
        env:
          LANGSMITH_API_KEY: ${{ secrets.LANGSMITH_API_KEY }}
@@ -133,7 +132,7 @@ jobs:
          fi

      - name: Build and test prerelease reqs fail service
-        if: ${{ (steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch') &&matrix.example.name == 'A' }}
+        if: ${{ steps.changed-files.outputs.all && matrix.example.name == 'A' }}
        working-directory: libs/cli/examples/graph_prerelease_reqs_fail
        run: |
          langgraph build -t langgraph-test-i || [ $? -eq 1 ]
@@ -34,12 +34,11 @@ jobs:
      - uses: actions/checkout@v6
      - name: Get changed files
        id: changed-files
-        if: github.event_name != 'workflow_dispatch'
        uses: Ana06/get-changed-files@v2.3.0
        with:
          filter: "${{ inputs.working-directory }}/**"
      - name: Set up Python ${{ matrix.python-version }}
-        if: steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch'
+        if: steps.changed-files.outputs.all
        uses: astral-sh/setup-uv@v7
        with:
          python-version: ${{ matrix.python-version }}
@@ -47,12 +46,12 @@ jobs:
          cache-suffix: lint-${{ inputs.working-directory }}

      - name: Install dependencies
-        if: steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch'
+        if: steps.changed-files.outputs.all
        working-directory: ${{ inputs.working-directory }}
        run: uv sync --frozen --group lint

      - name: Get .mypy_cache to speed up mypy
-        if: steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch'
+        if: steps.changed-files.outputs.all
        uses: actions/cache@v5
        env:
          SEGMENT_DOWNLOAD_TIMEOUT_MIN: "2"
@@ -62,7 +61,7 @@ jobs:
          key: mypy-lint-${{ runner.os }}-${{ runner.arch }}-py${{ matrix.python-version }}-${{ inputs.working-directory }}-${{ hashFiles(format('{0}/uv.lock', inputs.working-directory)) }}

      - name: Analysing package code with our lint
-        if: steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch'
+        if: steps.changed-files.outputs.all
        working-directory: ${{ inputs.working-directory }}
        run: |
          if make lint_package > /dev/null 2>&1; then
@@ -73,12 +72,12 @@ jobs:
          fi

      - name: Install test dependencies
-        if: steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch'
+        if: steps.changed-files.outputs.all
        working-directory: ${{ inputs.working-directory }}
        run: uv sync --group lint

      - name: Get .mypy_cache_test to speed up mypy
-        if: steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch'
+        if: steps.changed-files.outputs.all
        uses: actions/cache@v5
        env:
          SEGMENT_DOWNLOAD_TIMEOUT_MIN: "2"
@@ -88,7 +87,7 @@ jobs:
          key: mypy-test-${{ runner.os }}-${{ runner.arch }}-py${{ matrix.python-version }}-${{ inputs.working-directory }}-${{ hashFiles(format('{0}/uv.lock', inputs.working-directory)) }}

      - name: Analysing tests with our lint
-        if: steps.changed-files.outputs.all || github.event_name == 'workflow_dispatch'
+        if: steps.changed-files.outputs.all
        working-directory: ${{ inputs.working-directory }}
        run: |
          if make lint_tests > /dev/null 2>&1; then
@@ -45,13 +45,6 @@ jobs:
        shell: bash
        run: make test_parallel

-      - name: Run strict msgpack pregel tests
-        if: ${{ matrix.python-version == '3.13' }}
-        shell: bash
-        env:
-          LANGGRAPH_STRICT_MSGPACK: "true"
-        run: make test TEST="tests/test_pregel.py tests/test_pregel_async.py"
-
      - name: Ensure the tests did not create any additional files
        shell: bash
        run: |
@@ -2,12 +2,10 @@
 name: CI

 on:
-  workflow_dispatch:
  push:
    branches:
      - main
  pull_request:
-  

 permissions:
  contents: read
@@ -26,12 +24,11 @@ jobs:
  changes:
    runs-on: ubuntu-latest
    outputs:
-      python: ${{ steps.filter.outputs.python || 'true' }}
-      deps: ${{ steps.filter.outputs.deps || 'true' }}
+      python: ${{ steps.filter.outputs.python }}
+      deps: ${{ steps.filter.outputs.deps }}
    steps:
      - uses: actions/checkout@v6
      - uses: dorny/paths-filter@v3
-        if: github.event_name != 'workflow_dispatch'
        id: filter
        with:
          filters: |
@@ -259,7 +259,7 @@ wheels = [

 [[package]]
 name = "langgraph-checkpoint"
-version = "4.0.1rc3"
+version = "4.0.0"
 source = { editable = "../checkpoint" }
 dependencies = [
    { name = "langchain-core" },
@@ -280,7 +280,6 @@ dev = [
    { name = "numpy" },
    { name = "pandas" },
    { name = "pandas-stubs", specifier = ">=2.2.2.240807" },
-    { name = "pycryptodome", specifier = ">=3.23.0" },
    { name = "pytest" },
    { name = "pytest-asyncio" },
    { name = "pytest-mock" },
@@ -692,15 +691,15 @@ wheels = [

 [[package]]
 name = "psycopg"
-version = "3.3.3"
+version = "3.3.2"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "typing-extensions", marker = "python_full_version < '3.13'" },
    { name = "tzdata", marker = "sys_platform == 'win32'" },
 ]
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+sdist = { url = "https://files.pythonhosted.org/packages/e0/1a/7d9ef4fdc13ef7f15b934c393edc97a35c281bb7d3c3329fbfcbe915a7c2/psycopg-3.3.2.tar.gz", hash = "sha256:707a67975ee214d200511177a6a80e56e654754c9afca06a7194ea6bbfde9ca7", size = 165630, upload-time = "2025-12-06T17:34:53.899Z" }
 wheels = [
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+    { url = "https://files.pythonhosted.org/packages/8c/51/2779ccdf9305981a06b21a6b27e8547c948d85c41c76ff434192784a4c93/psycopg-3.3.2-py3-none-any.whl", hash = "sha256:3e94bc5f4690247d734599af56e51bae8e0db8e4311ea413f801fef82b14a99b", size = 212774, upload-time = "2025-12-06T17:31:41.414Z" },
 ]

 [package.optional-dependencies]
@@ -710,64 +709,64 @@ binary = [

 [[package]]
 name = "psycopg-binary"
-version = "3.3.3"
+version = "3.3.2"
 source = { registry = "https://pypi.org/simple" }
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 ]

 [[package]]
@@ -268,7 +268,7 @@ wheels = [

 [[package]]
 name = "langgraph-checkpoint"
-version = "4.0.1rc3"
+version = "4.0.0"
 source = { editable = "../checkpoint" }
 dependencies = [
    { name = "langchain-core" },
@@ -289,7 +289,6 @@ dev = [
    { name = "numpy" },
    { name = "pandas" },
    { name = "pandas-stubs", specifier = ">=2.2.2.240807" },
-    { name = "pycryptodome", specifier = ">=3.23.0" },
    { name = "pytest" },
    { name = "pytest-asyncio" },
    { name = "pytest-mock" },
@@ -37,4 +37,4 @@ type:

 format format_diff:
 	uv run ruff format $(PYTHON_FILES)
-	uv run ruff check --fix $(PYTHON_FILES)
+	uv run ruff check --select I --fix $(PYTHON_FILES)
@@ -1,8 +1,6 @@
 from __future__ import annotations

-import copy
-import logging
-from collections.abc import AsyncIterator, Collection, Iterator, Mapping, Sequence
+from collections.abc import AsyncIterator, Iterator, Mapping, Sequence
 from typing import (  # noqa: UP035
    Any,
    Generic,
@@ -16,7 +14,6 @@ from langchain_core.runnables import RunnableConfig

 from langgraph.checkpoint.base.id import uuid6
 from langgraph.checkpoint.serde.base import SerializerProtocol, maybe_add_typed_methods
-from langgraph.checkpoint.serde.encrypted import EncryptedSerializer
 from langgraph.checkpoint.serde.jsonplus import JsonPlusSerializer
 from langgraph.checkpoint.serde.types import (
    ERROR,
@@ -28,7 +25,6 @@ from langgraph.checkpoint.serde.types import (

 V = TypeVar("V", int, float, str)
 PendingWrite = tuple[str, str, Any]
-logger = logging.getLogger(__name__)


 # Marked as total=False to allow for future expansion.
@@ -478,37 +474,6 @@ class BaseCheckpointSaver(Generic[V]):
        else:
            return current + 1

-    def with_allowlist(
-        self, extra_allowlist: Collection[tuple[str, ...]]
-    ) -> BaseCheckpointSaver[V]:
-        """Return a shallow clone with a derived msgpack allowlist."""
-        serde = _with_msgpack_allowlist(self.serde, extra_allowlist)
-        if serde is self.serde:
-            return self
-        clone = copy.copy(self)
-        clone.serde = maybe_add_typed_methods(serde)
-        return clone
-
-
-def _with_msgpack_allowlist(
-    serde: SerializerProtocol, extra_allowlist: Collection[tuple[str, ...]]
-) -> SerializerProtocol:
-    if isinstance(serde, JsonPlusSerializer):
-        return serde.with_msgpack_allowlist(extra_allowlist)
-    if isinstance(serde, EncryptedSerializer):
-        inner = serde.serde
-        if isinstance(inner, JsonPlusSerializer):
-            updated_inner = inner.with_msgpack_allowlist(extra_allowlist)
-            if updated_inner is inner:
-                return serde
-            return EncryptedSerializer(serde.cipher, updated_inner)
-    logger.warning(
-        "Serializer %s does not support msgpack allowlist. "
-        "Strict msgpack deserialization will not be enforced.",
-        type(serde).__name__,
-    )
-    return serde
-

 class EmptyChannelError(Exception):
    """Raised when attempting to get the value of a channel that hasn't been updated
@@ -1,89 +0,0 @@
-import os
-from collections.abc import Iterable
-from typing import cast
-
-STRICT_MSGPACK_ENABLED = os.getenv("LANGGRAPH_STRICT_MSGPACK", "false").lower() in (
-    "1",
-    "true",
-    "yes",
-)
-
-
-_SENTINEL = cast(None, object())
-
-SAFE_MSGPACK_TYPES: frozenset[tuple[str, ...]] = frozenset(
-    {
-        # datetime types
-        ("datetime", "datetime"),
-        ("datetime", "date"),
-        ("datetime", "time"),
-        ("datetime", "timedelta"),
-        ("datetime", "timezone"),
-        # uuid
-        ("uuid", "UUID"),
-        # numeric
-        ("decimal", "Decimal"),
-        # collections
-        ("builtins", "set"),
-        ("builtins", "frozenset"),
-        ("collections", "deque"),
-        # ip addresses
-        ("ipaddress", "IPv4Address"),
-        ("ipaddress", "IPv4Interface"),
-        ("ipaddress", "IPv4Network"),
-        ("ipaddress", "IPv6Address"),
-        ("ipaddress", "IPv6Interface"),
-        ("ipaddress", "IPv6Network"),
-        # pathlib
-        ("pathlib", "Path"),
-        ("pathlib", "PosixPath"),
-        ("pathlib", "WindowsPath"),
-        # pathlib in Python 3.13+
-        ("pathlib._local", "Path"),
-        ("pathlib._local", "PosixPath"),
-        ("pathlib._local", "WindowsPath"),
-        # zoneinfo
-        ("zoneinfo", "ZoneInfo"),
-        # regex
-        ("re", "compile"),
-        # langchain-core messages (safe container types used by graph state)
-        ("langchain_core.messages.base", "BaseMessage"),
-        ("langchain_core.messages.base", "BaseMessageChunk"),
-        ("langchain_core.messages.human", "HumanMessage"),
-        ("langchain_core.messages.human", "HumanMessageChunk"),
-        ("langchain_core.messages.ai", "AIMessage"),
-        ("langchain_core.messages.ai", "AIMessageChunk"),
-        ("langchain_core.messages.system", "SystemMessage"),
-        ("langchain_core.messages.system", "SystemMessageChunk"),
-        ("langchain_core.messages.chat", "ChatMessage"),
-        ("langchain_core.messages.chat", "ChatMessageChunk"),
-        ("langchain_core.messages.tool", "ToolMessage"),
-        ("langchain_core.messages.tool", "ToolMessageChunk"),
-        ("langchain_core.messages.function", "FunctionMessage"),
-        ("langchain_core.messages.function", "FunctionMessageChunk"),
-        ("langchain_core.messages.modifier", "RemoveMessage"),
-        # langchain-core document model
-        ("langchain_core.documents.base", "Document"),
-        # langgraph
-        ("langgraph.types", "Send"),
-        ("langgraph.types", "Interrupt"),
-        ("langgraph.types", "Command"),
-        ("langgraph.types", "StateSnapshot"),
-        ("langgraph.types", "PregelTask"),
-        ("langgraph.types", "Overwrite"),
-        ("langgraph.store.base", "Item"),
-        ("langgraph.store.base", "GetOp"),
-    }
-)
-
-# Allowed (module, name, method) triples for EXT_METHOD_SINGLE_ARG.
-# Only these specific method invocations are permitted during deserialization.
-# This is separate from SAFE_MSGPACK_TYPES which only governs construction.
-SAFE_MSGPACK_METHODS: frozenset[tuple[str, str, str]] = frozenset(
-    {
-        ("datetime", "datetime", "fromisoformat"),
-    }
-)
-
-
-AllowedMsgpackModules = Iterable[tuple[str, ...] | type]
@@ -41,7 +41,7 @@ class EncryptedSerializer(SerializerProtocol):
    ) -> "EncryptedSerializer":
        """Create an `EncryptedSerializer` using AES encryption."""
        try:
-            from Crypto.Cipher import AES
+            from Crypto.Cipher import AES  # type: ignore
        except ImportError:
            raise ImportError(
                "Pycryptodome is not installed. Please install it with `pip install pycryptodome`."
@@ -1,6 +1,5 @@
 from __future__ import annotations

-import copy
 import dataclasses
 import decimal
 import importlib
@@ -11,7 +10,7 @@ import pickle
 import re
 import sys
 from collections import deque
-from collections.abc import Callable, Iterable, Sequence
+from collections.abc import Callable, Sequence
 from datetime import date, datetime, time, timedelta, timezone
 from enum import Enum
 from inspect import isclass
@@ -23,24 +22,17 @@ from ipaddress import (
    IPv6Interface,
    IPv6Network,
 )
-from typing import TYPE_CHECKING, Any, Literal, cast
+from typing import Any, Literal
 from uuid import UUID
 from zoneinfo import ZoneInfo

 import ormsgpack
 from langchain_core.load.load import Reviver

-from langgraph.checkpoint.serde import _msgpack as _lg_msgpack
 from langgraph.checkpoint.serde.base import SerializerProtocol
 from langgraph.checkpoint.serde.types import SendProtocol
 from langgraph.store.base import Item

-if TYPE_CHECKING:
-    from langgraph.checkpoint.serde._msgpack import (
-        AllowedMsgpackModules,
-    )
-    from langgraph.checkpoint.serde.types import SendProtocol
-
 LC_REVIVER = Reviver()
 EMPTY_BYTES = b""
 logger = logging.getLogger(__name__)
@@ -61,62 +53,21 @@ class JsonPlusSerializer(SerializerProtocol):
        self,
        *,
        pickle_fallback: bool = False,
-        allowed_json_modules: Iterable[tuple[str, ...]] | Literal[True] | None = None,
-        allowed_msgpack_modules: (
-            AllowedMsgpackModules | Literal[True] | None
-        ) = _lg_msgpack._SENTINEL,
+        allowed_json_modules: Sequence[tuple[str, ...]] | Literal[True] | None = None,
        __unpack_ext_hook__: Callable[[int, bytes], Any] | None = None,
    ) -> None:
-        if allowed_msgpack_modules is _lg_msgpack._SENTINEL:
-            if _lg_msgpack.STRICT_MSGPACK_ENABLED:
-                allowed_msgpack_modules = None
-            else:
-                allowed_msgpack_modules = True
        self.pickle_fallback = pickle_fallback
-        self._allowed_json_modules: set[tuple[str, ...]] | Literal[True] | None = (
-            _normalize_allowlist(allowed_json_modules)
+        self._allowed_modules = (
+            {mod_and_name for mod_and_name in allowed_json_modules}
+            if allowed_json_modules and allowed_json_modules is not True
+            else (allowed_json_modules if allowed_json_modules is True else None)
        )
-        self._allowed_msgpack_modules = _normalize_allowlist(allowed_msgpack_modules)
-
-        self._custom_unpack_ext_hook = __unpack_ext_hook__ is not None
        self._unpack_ext_hook = (
            __unpack_ext_hook__
            if __unpack_ext_hook__ is not None
-            else _create_msgpack_ext_hook(self._allowed_msgpack_modules)
+            else _msgpack_ext_hook
        )

-    def with_msgpack_allowlist(
-        self, extra_allowlist: Iterable[tuple[str, ...] | type]
-    ) -> JsonPlusSerializer:
-        """Return a new serializer with a merged msgpack allowlist."""
-        base_allowlist = self._allowed_msgpack_modules
-        if base_allowlist is True or base_allowlist is False:
-            return self
-        elif base_allowlist:
-            base_allowlist = set(base_allowlist)
-        else:
-            base_allowlist = set()
-        extra = _normalize_module_keys(tuple(extra_allowlist))
-        merged = base_allowlist | extra
-        if merged == base_allowlist:
-            return self
-        allowed_msgpack_modules: AllowedMsgpackModules | Literal[True] | None
-        if merged:
-            allowed_msgpack_modules = tuple(merged)
-        elif isinstance(self._allowed_msgpack_modules, set):
-            allowed_msgpack_modules = tuple(self._allowed_msgpack_modules)
-        else:
-            allowed_msgpack_modules = self._allowed_msgpack_modules
-
-        clone = copy.copy(self)
-        clone._allowed_json_modules = _normalize_allowlist(self._allowed_json_modules)
-        clone._allowed_msgpack_modules = _normalize_allowlist(allowed_msgpack_modules)
-        if not clone._custom_unpack_ext_hook:
-            clone._unpack_ext_hook = _create_msgpack_ext_hook(
-                clone._allowed_msgpack_modules
-            )
-        return clone
-
    def _encode_constructor_args(
        self,
        constructor: Callable | type[Any],
@@ -139,7 +90,7 @@ class JsonPlusSerializer(SerializerProtocol):
        return out

    def _reviver(self, value: dict[str, Any]) -> Any:
-        if self._allowed_json_modules and (
+        if self._allowed_modules and (
            value.get("lc", None) == 2
            and value.get("type", None) == "constructor"
            and value.get("id", None) is not None
@@ -156,7 +107,7 @@ class JsonPlusSerializer(SerializerProtocol):
        return LC_REVIVER(value)

    def _revive_lc2(self, value: dict[str, Any]) -> Any:
-        self._check_allowed_json_modules(value)
+        self._check_allowed_modules(value)

        [*module, name] = value["id"]
        try:
@@ -188,7 +139,7 @@ class JsonPlusSerializer(SerializerProtocol):
        except Exception:
            return None

-    def _check_allowed_json_modules(self, value: dict[str, Any]) -> None:
+    def _check_allowed_modules(self, value: dict[str, Any]) -> None:
        needed = tuple(value["id"])
        method = value.get("method")
        if isinstance(method, list):
@@ -199,7 +150,7 @@ class JsonPlusSerializer(SerializerProtocol):
            method_display = "<init>"

        dotted = ".".join(needed)
-        if not self._allowed_json_modules:
+        if not self._allowed_modules:
            raise InvalidModuleError(
                f"Refused to deserialize JSON constructor: {dotted} (method: {method_display}). "
                "No allowed_json_modules configured.\n\n"
@@ -210,9 +161,9 @@ class JsonPlusSerializer(SerializerProtocol):
                "or plain-JSON representations revived without import-time side effects."
            )

-        if self._allowed_json_modules is True:
+        if self._allowed_modules is True:
            return
-        if needed in self._allowed_json_modules:
+        if needed in self._allowed_modules:
            return

        raise InvalidModuleError(
@@ -497,174 +448,92 @@ def _msgpack_default(obj: Any) -> str | ormsgpack.Ext:
        raise TypeError(f"Object of type {obj.__class__.__name__} is not serializable")


-def _create_msgpack_ext_hook(
-    allowed_modules: set[tuple[str, ...]] | Literal[True] | None,
-) -> Callable[[int, bytes], Any]:
-    """Create msgpack ext hook with allowlist.
-
-    Args:
-        allowed_modules: Set of (module, name) tuples that are allowed to be
-        deserialized, or True to allow all with warnings for unregistered types, or None to only allow safe types.
-
-    Returns:
-        An ext_hook function for use with ormsgpack.unpackb.
-    """
-
-    def _check_allowed(module: str, name: str) -> bool:
-        """Check if type is allowed. Returns True if allowed, False if blocked."""
-        key = (module, name)
-
-        if key in _lg_msgpack.SAFE_MSGPACK_TYPES:
-            return True
-
-        if allowed_modules is True:
-            # default is to warn but allow unregistered types
-            logger.warning(
-                "Deserializing unregistered type %s.%s from checkpoint. "
-                "This will be blocked in a future version. "
-                "Add to allowed_msgpack_modules to silence: [(%r, %r)]",
-                module,
-                name,
-                module,
-                name,
+def _msgpack_ext_hook(code: int, data: bytes) -> Any:
+    if code == EXT_CONSTRUCTOR_SINGLE_ARG:
+        try:
+            tup = ormsgpack.unpackb(
+                data, ext_hook=_msgpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
            )
-            return True
-        if allowed_modules is not None:
-            if key in allowed_modules:
-                return True
-        # strict mode blocks unregistered types
-        logger.warning(
-            "Blocked deserialization of %s.%s - not in allowed_msgpack_modules. "
-            "Add to allowed_msgpack_modules to allow: [(%r, %r)]",
-            module,
-            name,
-            module,
-            name,
-        )
-        return False
+            # module, name, arg
+            return getattr(importlib.import_module(tup[0]), tup[1])(tup[2])
+        except Exception:
+            return
+    elif code == EXT_CONSTRUCTOR_POS_ARGS:
+        try:
+            tup = ormsgpack.unpackb(
+                data, ext_hook=_msgpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
+            )
+            # module, name, args
+            return getattr(importlib.import_module(tup[0]), tup[1])(*tup[2])
+        except Exception:
+            return
+    elif code == EXT_CONSTRUCTOR_KW_ARGS:
+        try:
+            tup = ormsgpack.unpackb(
+                data, ext_hook=_msgpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
+            )
+            # module, name, args
+            return getattr(importlib.import_module(tup[0]), tup[1])(**tup[2])
+        except Exception:
+            return
+    elif code == EXT_METHOD_SINGLE_ARG:
+        try:
+            tup = ormsgpack.unpackb(
+                data, ext_hook=_msgpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
+            )
+            # module, name, arg, method
+            return getattr(getattr(importlib.import_module(tup[0]), tup[1]), tup[3])(
+                tup[2]
+            )
+        except Exception:
+            return
+    elif code == EXT_PYDANTIC_V1:
+        try:
+            tup = ormsgpack.unpackb(
+                data, ext_hook=_msgpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
+            )
+            # module, name, kwargs
+            cls = getattr(importlib.import_module(tup[0]), tup[1])
+            try:
+                return cls(**tup[2])
+            except Exception:
+                return cls.construct(**tup[2])
+        except Exception:
+            # for pydantic objects we can't find/reconstruct
+            # let's return the kwargs dict instead
+            try:
+                return tup[2]
+            except NameError:
+                return
+    elif code == EXT_PYDANTIC_V2:
+        try:
+            tup = ormsgpack.unpackb(
+                data, ext_hook=_msgpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
+            )
+            # module, name, kwargs, method
+            cls = getattr(importlib.import_module(tup[0]), tup[1])
+            try:
+                return cls(**tup[2])
+            except Exception:
+                return cls.model_construct(**tup[2])
+        except Exception:
+            # for pydantic objects we can't find/reconstruct
+            # let's return the kwargs dict instead
+            try:
+                return tup[2]
+            except NameError:
+                return
+    elif code == EXT_NUMPY_ARRAY:
+        try:
+            import numpy as _np

-    def _check_allowed_method(module: str, name: str, method: str) -> bool:
-        """Check if a method invocation is allowed."""
-        key = (module, name, method)
-        if key in _lg_msgpack.SAFE_MSGPACK_METHODS:
-            return True
-        logger.warning(
-            "Blocked deserialization of method call %s.%s.%s - "
-            "not in allowed methods set.",
-            module,
-            name,
-            method,
-        )
-        return False
-
-    def ext_hook(code: int, data: bytes) -> Any:
-        if code == EXT_CONSTRUCTOR_SINGLE_ARG:
-            try:
-                tup = ormsgpack.unpackb(
-                    data, ext_hook=ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
-                )
-                if not _check_allowed(tup[0], tup[1]):
-                    # We default to returning the raw data. If the user
-                    # is using this in the context of a pydantic state, etc., then
-                    # it would be validated upon construction.
-                    return tup[2]
-                # module, name, arg
-                return getattr(importlib.import_module(tup[0]), tup[1])(tup[2])
-            except Exception:
-                return None
-        elif code == EXT_CONSTRUCTOR_POS_ARGS:
-            try:
-                tup = ormsgpack.unpackb(
-                    data, ext_hook=ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
-                )
-                if not _check_allowed(tup[0], tup[1]):
-                    return tup[2]
-                # module, name, args
-                return getattr(importlib.import_module(tup[0]), tup[1])(*tup[2])
-            except Exception:
-                return None
-        elif code == EXT_CONSTRUCTOR_KW_ARGS:
-            try:
-                tup = ormsgpack.unpackb(
-                    data, ext_hook=ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
-                )
-                if not _check_allowed(tup[0], tup[1]):
-                    return tup[2]
-                # module, name, kwargs
-                return getattr(importlib.import_module(tup[0]), tup[1])(**tup[2])
-            except Exception:
-                return None
-        elif code == EXT_METHOD_SINGLE_ARG:
-            try:
-                tup = ormsgpack.unpackb(
-                    data, ext_hook=ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
-                )
-                if not _check_allowed_method(tup[0], tup[1], tup[3]):
-                    return tup[2]
-                # module, name, arg, method
-                return getattr(
-                    getattr(importlib.import_module(tup[0]), tup[1]), tup[3]
-                )(tup[2])
-            except Exception:
-                return None
-        elif code == EXT_PYDANTIC_V1:
-            try:
-                tup = ormsgpack.unpackb(
-                    data, ext_hook=ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
-                )
-                if not _check_allowed(tup[0], tup[1]):
-                    return tup[2]
-                # module, name, kwargs
-                cls = getattr(importlib.import_module(tup[0]), tup[1])
-                try:
-                    return cls(**tup[2])
-                except Exception:
-                    return cls.construct(**tup[2])
-            except Exception:
-                # for pydantic objects we can't find/reconstruct
-                # let's return the kwargs dict instead
-                try:
-                    return tup[2]
-                except NameError:
-                    return None
-        elif code == EXT_PYDANTIC_V2:
-            try:
-                tup = ormsgpack.unpackb(
-                    data, ext_hook=ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
-                )
-                if not _check_allowed(tup[0], tup[1]):
-                    return tup[2]
-                # module, name, kwargs, method
-                cls = getattr(importlib.import_module(tup[0]), tup[1])
-                try:
-                    return cls(**tup[2])
-                except Exception:
-                    return cls.model_construct(**tup[2])
-            except Exception:
-                # for pydantic objects we can't find/reconstruct
-                # let's return the kwargs dict instead
-                try:
-                    return tup[2]
-                except NameError:
-                    return None
-        elif code == EXT_NUMPY_ARRAY:
-            try:
-                import numpy as _np
-
-                dtype_str, shape, order, buf = ormsgpack.unpackb(
-                    data, ext_hook=ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
-                )
-                arr = _np.frombuffer(buf, dtype=_np.dtype(dtype_str))
-                return arr.reshape(shape, order=order)
-            except Exception:
-                return None
-        return None
-
-    return ext_hook
-
-
-# Aliasing in case anyone imported it directly
-_msgpack_ext_hook = _create_msgpack_ext_hook(allowed_modules=None)
+            dtype_str, shape, order, buf = ormsgpack.unpackb(
+                data, ext_hook=_msgpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
+            )
+            arr = _np.frombuffer(buf, dtype=_np.dtype(dtype_str))
+            return arr.reshape(shape, order=order)
+        except Exception:
+            return


 def _msgpack_ext_hook_to_json(code: int, data: bytes) -> Any:
@@ -779,26 +648,3 @@ _option = (

 def _msgpack_enc(data: Any) -> bytes:
    return ormsgpack.packb(data, default=_msgpack_default, option=_option)
-
-
-def _normalize_allowlist(
-    allowlist: AllowedMsgpackModules | Literal[True] | None,
-) -> set[tuple[str, ...]] | Literal[True] | None:
-    if allowlist is True:
-        return allowlist
-    elif allowlist:
-        return _normalize_module_keys(allowlist)
-    else:
-        return None
-
-
-def _normalize_module_keys(
-    modules: AllowedMsgpackModules,
-) -> set[tuple[str, ...]]:
-    normalized: set[tuple[str, ...]] = set()
-    for module in modules:
-        if isclass(module):
-            normalized.add((module.__module__, module.__name__))
-        else:
-            normalized.add(cast(tuple[str, ...], module))
-    return normalized
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"

 [project]
 name = "langgraph-checkpoint"
-version = "4.0.1rc3"
+version = "4.0.0"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 authors = []
 requires-python = ">=3.10"
@@ -42,7 +42,6 @@ lint = [
 dev = [
  {include-group = "test"},
  {include-group = "lint"},
-  "pycryptodome>=3.23.0",
 ]

 [tool.hatch.build.targets.wheel]
@@ -1,437 +0,0 @@
-"""Tests for EncryptedSerializer with msgpack allowlist functionality.
-
-These tests mirror the msgpack allowlist tests in test_jsonplus.py but run them
-through the EncryptedSerializer to ensure the allowlist behavior is preserved
-when encryption is enabled.
-"""
-
-from __future__ import annotations
-
-import logging
-import pathlib
-import re
-import uuid
-from collections import deque
-from datetime import date, datetime, time, timezone
-from decimal import Decimal
-from ipaddress import IPv4Address
-from typing import Literal, cast
-
-import ormsgpack
-import pytest
-from pydantic import BaseModel
-
-from langgraph.checkpoint.base import BaseCheckpointSaver, _with_msgpack_allowlist
-from langgraph.checkpoint.serde import _msgpack as _lg_msgpack
-from langgraph.checkpoint.serde.base import CipherProtocol
-from langgraph.checkpoint.serde.encrypted import EncryptedSerializer
-from langgraph.checkpoint.serde.jsonplus import (
-    EXT_METHOD_SINGLE_ARG,
-    JsonPlusSerializer,
-    _msgpack_enc,
-)
-
-
-class InnerPydantic(BaseModel):
-    hello: str
-
-
-class MyPydantic(BaseModel):
-    foo: str
-    bar: int
-    inner: InnerPydantic
-
-
-class AnotherPydantic(BaseModel):
-    foo: str
-
-
-class _PassthroughCipher(CipherProtocol):
-    def encrypt(self, plaintext: bytes) -> tuple[str, bytes]:
-        return "passthrough", plaintext
-
-    def decrypt(self, ciphername: str, ciphertext: bytes) -> bytes:
-        assert ciphername == "passthrough"
-        return ciphertext
-
-
-def _make_encrypted_serde(
-    allowed_msgpack_modules: (
-        _lg_msgpack.AllowedMsgpackModules | Literal[True] | None | object
-    ) = _lg_msgpack._SENTINEL,
-) -> EncryptedSerializer:
-    """Create an EncryptedSerializer with AES encryption for testing."""
-    inner = JsonPlusSerializer(
-        allowed_msgpack_modules=cast(
-            _lg_msgpack.AllowedMsgpackModules | Literal[True] | None,
-            allowed_msgpack_modules,
-        )
-    )
-    return EncryptedSerializer.from_pycryptodome_aes(
-        serde=inner, key=b"1234567890123456"
-    )
-
-
-def test_msgpack_method_pathlib_blocked_encrypted_strict(
-    tmp_path: pathlib.Path, caplog: pytest.LogCaptureFixture
-) -> None:
-    target = tmp_path / "secret.txt"
-    target.write_text("secret")
-    payload = ormsgpack.packb(
-        ormsgpack.Ext(
-            EXT_METHOD_SINGLE_ARG,
-            _msgpack_enc(("pathlib", "Path", target, "read_text")),
-        ),
-        option=ormsgpack.OPT_NON_STR_KEYS,
-    )
-    serde = EncryptedSerializer(
-        _PassthroughCipher(),
-        JsonPlusSerializer(allowed_msgpack_modules=None),
-    )
-
-    caplog.set_level(logging.WARNING, logger="langgraph.checkpoint.serde.jsonplus")
-    caplog.clear()
-    result = serde.loads_typed(("msgpack+passthrough", payload))
-
-    assert result == target
-    assert "blocked deserialization of method call pathlib.path.read_text" in (
-        caplog.text.lower()
-    )
-
-
-class TestEncryptedSerializerMsgpackAllowlist:
-    """Test msgpack allowlist behavior through EncryptedSerializer."""
-
-    def test_safe_types_no_warning(self, caplog: pytest.LogCaptureFixture) -> None:
-        """Test safe types deserialize without warnings through encryption."""
-        serde = _make_encrypted_serde()
-
-        safe_objects = [
-            datetime.now(),
-            date.today(),
-            time(12, 30),
-            timezone.utc,
-            uuid.uuid4(),
-            Decimal("123.45"),
-            {1, 2, 3},
-            frozenset([1, 2, 3]),
-            deque([1, 2, 3]),
-            IPv4Address("192.168.1.1"),
-            pathlib.Path("/tmp/test"),
-        ]
-
-        for obj in safe_objects:
-            caplog.clear()
-            dumped = serde.dumps_typed(obj)
-            # Verify encryption is happening
-            assert "+aes" in dumped[0], f"Expected encryption for {type(obj)}"
-            result = serde.loads_typed(dumped)
-            assert "unregistered type" not in caplog.text.lower(), (
-                f"Unexpected warning for {type(obj)}"
-            )
-            assert result is not None
-
-    def test_pydantic_warns_by_default(self, caplog: pytest.LogCaptureFixture) -> None:
-        """Pydantic models not in allowlist should log warning but still deserialize."""
-        current = _lg_msgpack.STRICT_MSGPACK_ENABLED
-        _lg_msgpack.STRICT_MSGPACK_ENABLED = False
-        serde = _make_encrypted_serde()
-
-        obj = MyPydantic(foo="test", bar=42, inner=InnerPydantic(hello="world"))
-
-        caplog.clear()
-        dumped = serde.dumps_typed(obj)
-        assert "+aes" in dumped[0]
-        result = serde.loads_typed(dumped)
-
-        assert "unregistered type" in caplog.text.lower()
-        assert "allowed_msgpack_modules" in caplog.text
-        assert result == obj
-        _lg_msgpack.STRICT_MSGPACK_ENABLED = current
-
-    def test_strict_mode_blocks_unregistered(
-        self, caplog: pytest.LogCaptureFixture
-    ) -> None:
-        """Strict mode should block unregistered types through encryption."""
-        serde = _make_encrypted_serde(allowed_msgpack_modules=None)
-
-        obj = MyPydantic(foo="test", bar=42, inner=InnerPydantic(hello="world"))
-
-        caplog.clear()
-        dumped = serde.dumps_typed(obj)
-        assert "+aes" in dumped[0]
-        result = serde.loads_typed(dumped)
-
-        assert "blocked" in caplog.text.lower()
-        expected = obj.model_dump()
-        assert result == expected
-
-    def test_allowlist_silences_warning(self, caplog: pytest.LogCaptureFixture) -> None:
-        """Types in allowed_msgpack_modules should deserialize without warnings."""
-        serde = _make_encrypted_serde(
-            allowed_msgpack_modules=[
-                ("tests.test_encrypted", "MyPydantic"),
-                ("tests.test_encrypted", "InnerPydantic"),
-            ]
-        )
-
-        obj = MyPydantic(foo="test", bar=42, inner=InnerPydantic(hello="world"))
-
-        caplog.clear()
-        dumped = serde.dumps_typed(obj)
-        assert "+aes" in dumped[0]
-        result = serde.loads_typed(dumped)
-
-        assert "unregistered type" not in caplog.text.lower()
-        assert "blocked" not in caplog.text.lower()
-        assert result == obj
-
-    def test_allowlist_blocks_non_listed(
-        self, caplog: pytest.LogCaptureFixture
-    ) -> None:
-        """Allowlists should block unregistered types even through encryption."""
-        serde = _make_encrypted_serde(
-            allowed_msgpack_modules=[("tests.test_encrypted", "MyPydantic")]
-        )
-
-        obj = AnotherPydantic(foo="nope")
-
-        caplog.clear()
-        dumped = serde.dumps_typed(obj)
-        assert "+aes" in dumped[0]
-        result = serde.loads_typed(dumped)
-
-        assert "blocked" in caplog.text.lower()
-        expected = obj.model_dump()
-        assert result == expected
-
-    def test_safe_types_value_equality(self, caplog: pytest.LogCaptureFixture) -> None:
-        """Verify safe types are correctly restored with proper values through encryption."""
-        serde = _make_encrypted_serde(allowed_msgpack_modules=None)
-
-        test_cases = [
-            datetime(2024, 1, 15, 12, 30, 45, 123456),
-            date(2024, 6, 15),
-            time(14, 30, 0),
-            uuid.UUID("12345678-1234-5678-1234-567812345678"),
-            Decimal("123.456789"),
-            {1, 2, 3, 4, 5},
-            frozenset(["a", "b", "c"]),
-            deque([1, 2, 3]),
-            IPv4Address("10.0.0.1"),
-            pathlib.Path("/some/test/path"),
-            re.compile(r"\d+", re.MULTILINE),
-        ]
-
-        for obj in test_cases:
-            caplog.clear()
-            dumped = serde.dumps_typed(obj)
-            assert "+aes" in dumped[0], f"Expected encryption for {type(obj)}"
-            result = serde.loads_typed(dumped)
-
-            assert "blocked" not in caplog.text.lower(), f"Blocked for {type(obj)}"
-            if isinstance(obj, re.Pattern):
-                assert result.pattern == obj.pattern
-                assert result.flags == obj.flags
-            else:
-                assert result == obj, (
-                    f"Value mismatch for {type(obj)}: {result} != {obj}"
-                )
-
-    def test_regex_safe_type(self, caplog: pytest.LogCaptureFixture) -> None:
-        """re.compile patterns should deserialize without warnings as a safe type."""
-        serde = _make_encrypted_serde(allowed_msgpack_modules=None)
-        pattern = re.compile(r"foo.*bar", re.IGNORECASE | re.DOTALL)
-
-        caplog.clear()
-        dumped = serde.dumps_typed(pattern)
-        assert "+aes" in dumped[0]
-        result = serde.loads_typed(dumped)
-
-        assert "blocked" not in caplog.text.lower()
-        assert "unregistered" not in caplog.text.lower()
-        assert result.pattern == pattern.pattern
-        assert result.flags == pattern.flags
-
-
-class TestWithMsgpackAllowlistEncrypted:
-    """Test _with_msgpack_allowlist function with EncryptedSerializer."""
-
-    def test_propagates_allowlist_to_inner_serde(self) -> None:
-        """_with_msgpack_allowlist should propagate allowlist to inner JsonPlusSerializer."""
-        inner = JsonPlusSerializer(allowed_msgpack_modules=None)
-        encrypted = EncryptedSerializer.from_pycryptodome_aes(
-            serde=inner, key=b"1234567890123456"
-        )
-
-        extra = [("my.module", "MyClass")]
-        result = _with_msgpack_allowlist(encrypted, extra)
-
-        # Should return a new EncryptedSerializer
-        assert isinstance(result, EncryptedSerializer)
-        assert result is not encrypted
-        # Inner serde should have the allowlist
-        assert isinstance(result.serde, JsonPlusSerializer)
-        assert isinstance(result.serde._allowed_msgpack_modules, set)
-        assert ("my.module", "MyClass") in result.serde._allowed_msgpack_modules
-
-    def test_preserves_cipher(self) -> None:
-        """_with_msgpack_allowlist should preserve the cipher from the original."""
-        inner = JsonPlusSerializer(allowed_msgpack_modules=None)
-        encrypted = EncryptedSerializer.from_pycryptodome_aes(
-            serde=inner, key=b"1234567890123456"
-        )
-
-        result = _with_msgpack_allowlist(encrypted, [("my.module", "MyClass")])
-
-        assert isinstance(result, EncryptedSerializer)
-        # Should use the same cipher
-        assert result.cipher is encrypted.cipher
-
-    def test_returns_same_if_not_jsonplus_inner(self) -> None:
-        """_with_msgpack_allowlist should return same serde if inner is not JsonPlusSerializer."""
-
-        class DummyInnerSerde:
-            def dumps_typed(self, obj: object) -> tuple[str, bytes]:
-                return ("dummy", b"")
-
-            def loads_typed(self, data: tuple[str, bytes]) -> None:
-                return None
-
-        from langgraph.checkpoint.serde.base import CipherProtocol
-
-        class DummyCipher(CipherProtocol):
-            def encrypt(self, plaintext: bytes) -> tuple[str, bytes]:
-                return "dummy", plaintext
-
-            def decrypt(self, ciphername: str, ciphertext: bytes) -> bytes:
-                return ciphertext
-
-        encrypted = EncryptedSerializer(DummyCipher(), DummyInnerSerde())
-        result = _with_msgpack_allowlist(encrypted, [("my.module", "MyClass")])
-
-        assert result is encrypted
-
-    def test_warns_if_allowlist_unsupported(
-        self, caplog: pytest.LogCaptureFixture
-    ) -> None:
-        class DummySerde:
-            def dumps_typed(self, obj: object) -> tuple[str, bytes]:
-                return ("dummy", b"")
-
-            def loads_typed(self, data: tuple[str, bytes]) -> object:
-                return data
-
-        serde = DummySerde()
-        caplog.set_level(logging.WARNING, logger="langgraph.checkpoint.base")
-        caplog.clear()
-
-        result = _with_msgpack_allowlist(serde, [("my.module", "MyClass")])
-
-        assert result is serde
-        assert "does not support msgpack allowlist" in caplog.text.lower()
-
-    def test_noop_allowlist_returns_same_encrypted_instance(self) -> None:
-        inner = JsonPlusSerializer(allowed_msgpack_modules=None)
-        encrypted = EncryptedSerializer.from_pycryptodome_aes(
-            serde=inner, key=b"1234567890123456"
-        )
-
-        result = _with_msgpack_allowlist(encrypted, ())
-
-        assert result is encrypted
-
-    def test_functional_roundtrip_with_allowlist(
-        self, caplog: pytest.LogCaptureFixture
-    ) -> None:
-        """End-to-end test: allowlist applied via _with_msgpack_allowlist works."""
-        inner = JsonPlusSerializer(allowed_msgpack_modules=None)
-        encrypted = EncryptedSerializer.from_pycryptodome_aes(
-            serde=inner, key=b"1234567890123456"
-        )
-
-        # Apply allowlist for MyPydantic
-        updated = _with_msgpack_allowlist(
-            encrypted,
-            [
-                ("tests.test_encrypted", "MyPydantic"),
-                ("tests.test_encrypted", "InnerPydantic"),
-            ],
-        )
-
-        obj = MyPydantic(foo="test", bar=42, inner=InnerPydantic(hello="world"))
-
-        caplog.clear()
-        dumped = updated.dumps_typed(obj)
-        assert "+aes" in dumped[0]
-        result = updated.loads_typed(dumped)
-
-        # Should deserialize without blocking
-        assert "blocked" not in caplog.text.lower()
-        assert result == obj
-
-    def test_original_still_blocks_after_with_allowlist(
-        self, caplog: pytest.LogCaptureFixture
-    ) -> None:
-        """Original serde should still block after _with_msgpack_allowlist creates a new one."""
-        inner = JsonPlusSerializer(allowed_msgpack_modules=None)
-        encrypted = EncryptedSerializer.from_pycryptodome_aes(
-            serde=inner, key=b"1234567890123456"
-        )
-
-        # Apply allowlist - this should create a NEW serde
-        _with_msgpack_allowlist(
-            encrypted,
-            [("tests.test_encrypted", "MyPydantic")],
-        )
-
-        # Original should still block
-        obj = MyPydantic(foo="test", bar=42, inner=InnerPydantic(hello="world"))
-
-        caplog.clear()
-        dumped = encrypted.dumps_typed(obj)
-        result = encrypted.loads_typed(dumped)
-
-        assert "blocked" in caplog.text.lower()
-        assert result == obj.model_dump()
-
-
-class TestEncryptedSerializerUnencryptedFallback:
-    """Test that EncryptedSerializer handles unencrypted data correctly."""
-
-    def test_loads_unencrypted_data(self) -> None:
-        """EncryptedSerializer should handle unencrypted data for backwards compat."""
-        plain = JsonPlusSerializer(allowed_msgpack_modules=None)
-        encrypted = _make_encrypted_serde(allowed_msgpack_modules=None)
-
-        obj = {"key": "value", "number": 42}
-
-        # Serialize with plain serde
-        dumped = plain.dumps_typed(obj)
-        assert "+aes" not in dumped[0]
-
-        # Should still deserialize with encrypted serde
-        result = encrypted.loads_typed(dumped)
-        assert result == obj
-
-
-def test_with_allowlist_uses_copy_protocol() -> None:
-    class CopyAwareSaver(BaseCheckpointSaver[str]):
-        def __init__(self) -> None:
-            super().__init__(serde=JsonPlusSerializer(allowed_msgpack_modules=None))
-            self.copy_was_used = False
-
-        def __copy__(self) -> object:
-            clone = object.__new__(self.__class__)
-            clone.__dict__ = self.__dict__.copy()
-            clone.copy_was_used = True
-            return clone
-
-    saver = CopyAwareSaver()
-
-    updated = saver.with_allowlist([("tests.test_encrypted", "MyPydantic")])
-
-    assert isinstance(updated, CopyAwareSaver)
-    assert updated is not saver
-    assert updated.copy_was_used is True
-    assert saver.copy_was_used is False
@@ -1,6 +1,5 @@
 import dataclasses
 import json
-import logging
 import pathlib
 import re
 import sys
@@ -14,22 +13,15 @@ from zoneinfo import ZoneInfo

 import dataclasses_json
 import numpy as np
-import ormsgpack
 import pandas as pd
 import pytest
-from langchain_core.documents.base import Document
-from langchain_core.messages import HumanMessage
 from pydantic import BaseModel, SecretStr
 from pydantic.v1 import BaseModel as BaseModelV1
 from pydantic.v1 import SecretStr as SecretStrV1

-from langgraph.checkpoint.serde import _msgpack as _lg_msgpack
-from langgraph.checkpoint.serde._msgpack import AllowedMsgpackModules
 from langgraph.checkpoint.serde.jsonplus import (
-    EXT_METHOD_SINGLE_ARG,
    InvalidModuleError,
    JsonPlusSerializer,
-    _msgpack_enc,
    _msgpack_ext_hook_to_json,
 )
 from langgraph.store.base import Item
@@ -45,10 +37,6 @@ class MyPydantic(BaseModel):
    inner: InnerPydantic


-class AnotherPydantic(BaseModel):
-    foo: str
-
-
 class InnerPydanticV1(BaseModelV1):
    hello: str

@@ -150,27 +138,7 @@ def test_serde_jsonplus() -> None:
        )
        to_serialize["my_secret_str_v1"] = SecretStrV1("meow")

-    allowed_msgpack_modules: AllowedMsgpackModules = [
-        InnerDataclass,
-        MyDataclass,
-        MyDataclassWSlots,
-        MyEnum,
-        InnerPydantic,
-        MyPydantic,
-        # Testing that it supports both.
-        (Person.__module__, Person.__name__),
-        (SecretStr.__module__, SecretStr.__name__),
-    ]
-    if sys.version_info < (3, 14):
-        allowed_msgpack_modules.extend(  # type: ignore
-            [
-                (InnerPydanticV1.__module__, InnerPydanticV1.__name__),
-                (MyPydanticV1.__module__, MyPydanticV1.__name__),
-                (SecretStrV1.__module__, SecretStrV1.__name__),
-            ]
-        )
-
-    serde = JsonPlusSerializer(allowed_msgpack_modules=allowed_msgpack_modules)
+    serde = JsonPlusSerializer()

    dumped = serde.dumps_typed(to_serialize)

@@ -544,404 +512,5 @@ def test_serde_jsonplus_pandas_series(series: pd.Series) -> None:

    assert dumped[0] == "pickle"
    result = serde.loads_typed(dumped)
+
    assert result.equals(series)
-
-
-def test_msgpack_safe_types_no_warning(caplog: pytest.LogCaptureFixture) -> None:
-    """Test safe types deserialize without warnings."""
-
-    serde = JsonPlusSerializer()
-
-    safe_objects = [
-        datetime.now(),
-        date.today(),
-        time(12, 30),
-        timezone.utc,
-        uuid.uuid4(),
-        Decimal("123.45"),
-        {1, 2, 3},
-        frozenset([1, 2, 3]),
-        deque([1, 2, 3]),
-        IPv4Address("192.168.1.1"),
-        pathlib.Path("/tmp/test"),
-    ]
-
-    for obj in safe_objects:
-        caplog.clear()
-        dumped = serde.dumps_typed(obj)
-        result = serde.loads_typed(dumped)
-        assert "unregistered type" not in caplog.text.lower(), (
-            f"Unexpected warning for {type(obj)}"
-        )
-        assert result is not None
-
-
-def test_msgpack_pydantic_warns_by_default(caplog: pytest.LogCaptureFixture) -> None:
-    """Pydantic models not in allowlist should log warning but still deserialize."""
-    current = _lg_msgpack.STRICT_MSGPACK_ENABLED
-    _lg_msgpack.STRICT_MSGPACK_ENABLED = False
-    serde = JsonPlusSerializer()
-
-    obj = MyPydantic(foo="test", bar=42, inner=InnerPydantic(hello="world"))
-
-    caplog.clear()
-    dumped = serde.dumps_typed(obj)
-    result = serde.loads_typed(dumped)
-
-    assert "unregistered type" in caplog.text.lower()
-    assert "allowed_msgpack_modules" in caplog.text
-    assert result == obj
-    _lg_msgpack.STRICT_MSGPACK_ENABLED = current
-
-
-def test_msgpack_env_strict_default(
-    caplog: pytest.LogCaptureFixture,
-) -> None:
-    """Strict msgpack env should default to blocking unregistered types."""
-    current = _lg_msgpack.STRICT_MSGPACK_ENABLED
-    _lg_msgpack.STRICT_MSGPACK_ENABLED = True
-    serde = JsonPlusSerializer()
-
-    obj = MyPydantic(foo="test", bar=42, inner=InnerPydantic(hello="world"))
-
-    caplog.clear()
-    dumped = serde.dumps_typed(obj)
-    result = serde.loads_typed(dumped)
-
-    assert "blocked" in caplog.text.lower()
-    assert result == obj.model_dump()
-    _lg_msgpack.STRICT_MSGPACK_ENABLED = current
-
-
-def test_msgpack_allowlist_silences_warning(caplog: pytest.LogCaptureFixture) -> None:
-    """Types in allowed_msgpack_modules should deserialize without warnings."""
-
-    serde = JsonPlusSerializer(
-        allowed_msgpack_modules=[
-            ("tests.test_jsonplus", "MyPydantic"),
-            ("tests.test_jsonplus", "InnerPydantic"),
-        ]
-    )
-
-    obj = MyPydantic(foo="test", bar=42, inner=InnerPydantic(hello="world"))
-
-    caplog.clear()
-    dumped = serde.dumps_typed(obj)
-    result = serde.loads_typed(dumped)
-
-    assert "unregistered type" not in caplog.text.lower()
-    assert result == obj
-
-
-def test_msgpack_none_blocks_unregistered(caplog: pytest.LogCaptureFixture) -> None:
-    """allowed_msgpack_modules=None should block unregistered types."""
-
-    serde = JsonPlusSerializer(allowed_msgpack_modules=None)
-
-    obj = MyPydantic(foo="test", bar=42, inner=InnerPydantic(hello="world"))
-
-    caplog.clear()
-    dumped = serde.dumps_typed(obj)
-    result = serde.loads_typed(dumped)
-
-    assert "blocked" in caplog.text.lower()
-    expected = obj.model_dump()
-    assert result == expected
-
-
-def test_msgpack_allowlist_blocks_non_listed(
-    caplog: pytest.LogCaptureFixture,
-) -> None:
-    """Allowlists should block unregistered types even if msgpack is enabled."""
-
-    serde = JsonPlusSerializer(
-        allowed_msgpack_modules=[("tests.test_jsonplus", "MyPydantic")]
-    )
-
-    obj = AnotherPydantic(foo="nope")
-
-    caplog.clear()
-    dumped = serde.dumps_typed(obj)
-    result = serde.loads_typed(dumped)
-
-    assert "blocked" in caplog.text.lower()
-    expected = obj.model_dump()
-    # It's not allowed, so we just leave it as a dict
-    assert result == expected
-
-
-def test_msgpack_strict_allows_safe_types(
-    caplog: pytest.LogCaptureFixture,
-) -> None:
-    """Safe types should still deserialize in strict mode without warnings."""
-
-    serde = JsonPlusSerializer(allowed_msgpack_modules=None)
-    safe = uuid.uuid4()
-
-    caplog.clear()
-    dumped = serde.dumps_typed(safe)
-    result = serde.loads_typed(dumped)
-
-    assert "blocked" not in caplog.text.lower()
-    assert result == safe
-
-
-def test_msgpack_strict_allows_core_langchain_messages(
-    caplog: pytest.LogCaptureFixture,
-) -> None:
-    serde = JsonPlusSerializer(allowed_msgpack_modules=None)
-    msg = HumanMessage(content="hello")
-
-    caplog.clear()
-    result = serde.loads_typed(serde.dumps_typed(msg))
-
-    assert "blocked" not in caplog.text.lower()
-    assert "unregistered" not in caplog.text.lower()
-    assert isinstance(result, HumanMessage)
-    assert result == msg
-
-
-def test_msgpack_strict_allows_langchain_document(
-    caplog: pytest.LogCaptureFixture,
-) -> None:
-    serde = JsonPlusSerializer(allowed_msgpack_modules=None)
-    doc = Document(page_content="hello", metadata={"k": "v"})
-
-    caplog.clear()
-    result = serde.loads_typed(serde.dumps_typed(doc))
-
-    assert "blocked" not in caplog.text.lower()
-    assert "unregistered" not in caplog.text.lower()
-    assert isinstance(result, Document)
-    assert result == doc
-
-
-def test_msgpack_regex_safe_type(caplog: pytest.LogCaptureFixture) -> None:
-    """re.compile patterns should deserialize without warnings as a safe type."""
-
-    serde = JsonPlusSerializer(allowed_msgpack_modules=None)
-    pattern = re.compile(r"foo.*bar", re.IGNORECASE | re.DOTALL)
-
-    caplog.clear()
-    dumped = serde.dumps_typed(pattern)
-    result = serde.loads_typed(dumped)
-
-    assert "blocked" not in caplog.text.lower()
-    assert "unregistered" not in caplog.text.lower()
-    assert result.pattern == pattern.pattern
-    assert result.flags == pattern.flags
-
-
-def test_msgpack_method_pathlib_blocked_in_strict(
-    tmp_path: pathlib.Path, caplog: pytest.LogCaptureFixture
-) -> None:
-    target = tmp_path / "secret.txt"
-    target.write_text("secret")
-    serde = JsonPlusSerializer(allowed_msgpack_modules=None)
-    payload = ormsgpack.packb(
-        ormsgpack.Ext(
-            EXT_METHOD_SINGLE_ARG,
-            _msgpack_enc(("pathlib", "Path", target, "read_text")),
-        ),
-        option=ormsgpack.OPT_NON_STR_KEYS,
-    )
-
-    caplog.set_level(logging.WARNING, logger="langgraph.checkpoint.serde.jsonplus")
-    caplog.clear()
-    result = serde.loads_typed(("msgpack", payload))
-
-    assert result == target
-    assert "blocked deserialization of method call pathlib.path.read_text" in (
-        caplog.text.lower()
-    )
-
-
-def test_msgpack_method_pathlib_blocked_default_mode(
-    tmp_path: pathlib.Path, caplog: pytest.LogCaptureFixture
-) -> None:
-    target = tmp_path / "secret.txt"
-    target.write_text("secret")
-    serde = JsonPlusSerializer(allowed_msgpack_modules=True)
-    payload = ormsgpack.packb(
-        ormsgpack.Ext(
-            EXT_METHOD_SINGLE_ARG,
-            _msgpack_enc(("pathlib", "Path", target, "read_text")),
-        ),
-        option=ormsgpack.OPT_NON_STR_KEYS,
-    )
-
-    caplog.set_level(logging.WARNING, logger="langgraph.checkpoint.serde.jsonplus")
-    caplog.clear()
-    result = serde.loads_typed(("msgpack", payload))
-
-    assert result == target
-    assert "blocked deserialization of method call pathlib.path.read_text" in (
-        caplog.text.lower()
-    )
-
-
-def test_msgpack_regex_still_works_strict(caplog: pytest.LogCaptureFixture) -> None:
-    serde = JsonPlusSerializer(allowed_msgpack_modules=None)
-    pattern = re.compile(r"pattern", re.IGNORECASE | re.MULTILINE)
-
-    caplog.clear()
-    result = serde.loads_typed(serde.dumps_typed(pattern))
-
-    assert "blocked" not in caplog.text.lower()
-    assert result.pattern == pattern.pattern
-    assert result.flags == pattern.flags
-
-
-def test_msgpack_path_constructor_still_works() -> None:
-    serde = JsonPlusSerializer(allowed_msgpack_modules=None)
-    path_obj = pathlib.Path("/tmp/foo")
-
-    result = serde.loads_typed(serde.dumps_typed(path_obj))
-
-    assert result == path_obj
-
-
-def test_with_msgpack_allowlist_noop_returns_same_instance() -> None:
-    serde = JsonPlusSerializer(allowed_msgpack_modules=None)
-
-    result = serde.with_msgpack_allowlist(())
-
-    assert result is serde
-
-
-def test_with_msgpack_allowlist_supports_subclass_without_init_kwargs() -> None:
-    class CustomSerializer(JsonPlusSerializer):
-        def __init__(self) -> None:
-            super().__init__(allowed_msgpack_modules=None)
-
-    serde = CustomSerializer()
-    result = serde.with_msgpack_allowlist([MyDataclass])
-
-    assert isinstance(result, CustomSerializer)
-    assert result is not serde
-    assert serde._allowed_msgpack_modules is None
-    assert result._allowed_msgpack_modules == {
-        (MyDataclass.__module__, MyDataclass.__name__)
-    }
-
-
-def test_with_msgpack_allowlist_rebuilds_default_unpack_hook() -> None:
-    serde = JsonPlusSerializer(allowed_msgpack_modules=None)
-    original_hook = serde._unpack_ext_hook
-
-    result = serde.with_msgpack_allowlist([MyDataclass])
-
-    assert result._unpack_ext_hook is not original_hook
-
-
-def test_with_msgpack_allowlist_preserves_custom_unpack_hook() -> None:
-    def custom_hook(code: int, data: bytes) -> None:
-        return None
-
-    serde = JsonPlusSerializer(
-        allowed_msgpack_modules=None, __unpack_ext_hook__=custom_hook
-    )
-    result = serde.with_msgpack_allowlist([MyDataclass])
-
-    assert result._unpack_ext_hook is custom_hook
-
-
-@pytest.mark.skipif(sys.version_info >= (3, 14), reason="pydantic v1 not on 3.14+")
-def test_msgpack_pydantic_v1_allowlist(caplog: pytest.LogCaptureFixture) -> None:
-    """Pydantic v1 models in allowlist should deserialize without warnings."""
-
-    serde = JsonPlusSerializer(
-        allowed_msgpack_modules=[
-            ("tests.test_jsonplus", "MyPydanticV1"),
-            ("tests.test_jsonplus", "InnerPydanticV1"),
-        ]
-    )
-
-    obj = MyPydanticV1(foo="test", bar=42, inner=InnerPydanticV1(hello="world"))
-
-    caplog.clear()
-    dumped = serde.dumps_typed(obj)
-    result = serde.loads_typed(dumped)
-
-    assert "unregistered type" not in caplog.text.lower()
-    assert "blocked" not in caplog.text.lower()
-    assert result == obj
-
-
-def test_msgpack_dataclass_allowlist(caplog: pytest.LogCaptureFixture) -> None:
-    """Dataclasses in allowlist should deserialize without warnings."""
-
-    serde = JsonPlusSerializer(
-        allowed_msgpack_modules=[
-            ("tests.test_jsonplus", "MyDataclass"),
-            ("tests.test_jsonplus", "InnerDataclass"),
-        ]
-    )
-
-    obj = MyDataclass(foo="test", bar=42, inner=InnerDataclass(hello="world"))
-
-    caplog.clear()
-    dumped = serde.dumps_typed(obj)
-    result = serde.loads_typed(dumped)
-
-    assert "unregistered type" not in caplog.text.lower()
-    assert "blocked" not in caplog.text.lower()
-    assert result == obj
-
-
-def test_msgpack_safe_types_value_equality(caplog: pytest.LogCaptureFixture) -> None:
-    """Verify safe types are correctly restored with proper values."""
-
-    serde = JsonPlusSerializer(allowed_msgpack_modules=None)
-
-    test_cases = [
-        datetime(2024, 1, 15, 12, 30, 45, 123456),
-        date(2024, 6, 15),
-        time(14, 30, 0),
-        uuid.UUID("12345678-1234-5678-1234-567812345678"),
-        Decimal("123.456789"),
-        {1, 2, 3, 4, 5},
-        frozenset(["a", "b", "c"]),
-        deque([1, 2, 3]),
-        IPv4Address("10.0.0.1"),
-        pathlib.Path("/some/test/path"),
-        re.compile(r"\d+", re.MULTILINE),
-    ]
-
-    for obj in test_cases:
-        caplog.clear()
-        dumped = serde.dumps_typed(obj)
-        result = serde.loads_typed(dumped)
-
-        assert "blocked" not in caplog.text.lower(), f"Blocked for {type(obj)}"
-        # For regex patterns, compare pattern and flags
-        if isinstance(obj, re.Pattern):
-            assert result.pattern == obj.pattern
-            assert result.flags == obj.flags
-        else:
-            assert result == obj, f"Value mismatch for {type(obj)}: {result} != {obj}"
-
-
-def test_msgpack_nested_pydantic_serializes_as_dict(
-    caplog: pytest.LogCaptureFixture,
-) -> None:
-    """Nested Pydantic models are serialized via model_dump() as dicts.
-
-    This means nested models don't go through the ext hook and don't need
-    to be in the allowlist - only the outer type does.
-    """
-
-    # Only allow outer type - inner is serialized as dict via model_dump()
-    serde = JsonPlusSerializer(
-        allowed_msgpack_modules=[("tests.test_jsonplus", "MyPydantic")]
-    )
-
-    obj = MyPydantic(foo="test", bar=42, inner=InnerPydantic(hello="world"))
-
-    caplog.clear()
-    dumped = serde.dumps_typed(obj)
-    result = serde.loads_typed(dumped)
-
-    # No blocking should occur - inner is serialized as dict, not ext
-    assert "blocked" not in caplog.text.lower()
-    assert result == obj
@@ -1,9 +1,7 @@
-import logging
 from typing import Any

 import pytest
 from langchain_core.runnables import RunnableConfig
-from pydantic import BaseModel

 from langgraph.checkpoint.base import (
    Checkpoint,
@@ -12,11 +10,6 @@ from langgraph.checkpoint.base import (
    empty_checkpoint,
 )
 from langgraph.checkpoint.memory import InMemorySaver
-from langgraph.checkpoint.serde.jsonplus import JsonPlusSerializer
-
-
-class MemoryPydantic(BaseModel):
-    foo: str


 class TestMemorySaver:
@@ -206,105 +199,3 @@ async def test_memory_saver() -> None:

    with memory_saver as sync_memory_saver:
        assert sync_memory_saver is memory_saver
-
-
-def test_memory_saver_warns_on_unregistered_msgpack(
-    caplog: pytest.LogCaptureFixture,
-) -> None:
-    serde = JsonPlusSerializer()
-    memory_saver = InMemorySaver(serde=serde)
-    obj = MemoryPydantic(foo="bar")
-
-    checkpoint = empty_checkpoint()
-    checkpoint["channel_values"] = {"foo": obj}
-    checkpoint["channel_versions"] = {"foo": 1}
-
-    config: RunnableConfig = {
-        "configurable": {"thread_id": "thread-1", "checkpoint_ns": ""}
-    }
-
-    caplog.set_level(logging.WARNING, logger="langgraph.checkpoint.serde.jsonplus")
-    new_config = memory_saver.put(config, checkpoint, {}, {"foo": 1})
-    result = memory_saver.get_tuple(new_config)
-
-    assert result is not None
-    assert "unregistered type" in caplog.text.lower()
-    assert result.checkpoint["channel_values"]["foo"] == obj
-
-
-def test_memory_saver_allowlist_silences_warning(
-    caplog: pytest.LogCaptureFixture,
-) -> None:
-    serde = JsonPlusSerializer(
-        allowed_msgpack_modules=[("tests.test_memory", "MemoryPydantic")]
-    )
-    memory_saver = InMemorySaver(serde=serde)
-    obj = MemoryPydantic(foo="bar")
-
-    checkpoint = empty_checkpoint()
-    checkpoint["channel_values"] = {"foo": obj}
-    checkpoint["channel_versions"] = {"foo": 1}
-
-    config: RunnableConfig = {
-        "configurable": {"thread_id": "thread-1", "checkpoint_ns": ""}
-    }
-
-    caplog.set_level(logging.WARNING, logger="langgraph.checkpoint.serde.jsonplus")
-    new_config = memory_saver.put(config, checkpoint, {}, {"foo": 1})
-    result = memory_saver.get_tuple(new_config)
-
-    assert result is not None
-    assert "unregistered type" not in caplog.text.lower()
-    assert result.checkpoint["channel_values"]["foo"] == obj
-
-
-def test_memory_saver_strict_blocks_unregistered(
-    caplog: pytest.LogCaptureFixture,
-) -> None:
-    serde = JsonPlusSerializer(allowed_msgpack_modules=None)
-    memory_saver = InMemorySaver(serde=serde)
-    obj = MemoryPydantic(foo="bar")
-
-    checkpoint = empty_checkpoint()
-    checkpoint["channel_values"] = {"foo": obj}
-    checkpoint["channel_versions"] = {"foo": 1}
-
-    config: RunnableConfig = {
-        "configurable": {"thread_id": "thread-1", "checkpoint_ns": ""}
-    }
-
-    caplog.set_level(logging.WARNING, logger="langgraph.checkpoint.serde.jsonplus")
-    new_config = memory_saver.put(config, checkpoint, {}, {"foo": 1})
-    result = memory_saver.get_tuple(new_config)
-
-    assert result is not None
-    assert "blocked" in caplog.text.lower()
-    expected = obj.model_dump() if hasattr(obj, "model_dump") else obj.dict()
-    assert result.checkpoint["channel_values"]["foo"] == expected
-
-
-def test_memory_saver_with_allowlist_proxy_isolated() -> None:
-    serde = JsonPlusSerializer(allowed_msgpack_modules=None)
-    memory_saver = InMemorySaver(serde=serde)
-    proxy = memory_saver.with_allowlist([("tests.test_memory", "MemoryPydantic")])
-
-    obj = MemoryPydantic(foo="bar")
-
-    checkpoint = empty_checkpoint()
-    checkpoint["channel_values"] = {"foo": obj}
-    checkpoint["channel_versions"] = {"foo": 1}
-
-    config: RunnableConfig = {
-        "configurable": {"thread_id": "thread-1", "checkpoint_ns": ""}
-    }
-
-    new_config = proxy.put(config, checkpoint, {}, {"foo": 1})
-
-    proxied = proxy.get_tuple(new_config)
-    assert proxied is not None
-    assert proxied.checkpoint["channel_values"]["foo"] == obj
-
-    direct = memory_saver.get_tuple(new_config)
-    assert direct is not None
-    expected = obj.model_dump() if hasattr(obj, "model_dump") else obj.dict()
-    assert direct.checkpoint["channel_values"]["foo"] == expected
@@ -286,7 +286,7 @@ wheels = [

 [[package]]
 name = "langgraph-checkpoint"
-version = "4.0.1rc3"
+version = "4.0.0"
 source = { editable = "." }
 dependencies = [
    { name = "langchain-core" },
@@ -302,7 +302,6 @@ dev = [
    { name = "numpy", version = "2.4.1", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version >= '3.11'" },
    { name = "pandas" },
    { name = "pandas-stubs" },
-    { name = "pycryptodome" },
    { name = "pytest" },
    { name = "pytest-asyncio" },
    { name = "pytest-mock" },
@@ -342,7 +341,6 @@ dev = [
    { name = "numpy" },
    { name = "pandas" },
    { name = "pandas-stubs", specifier = ">=2.2.2.240807" },
-    { name = "pycryptodome", specifier = ">=3.23.0" },
    { name = "pytest" },
    { name = "pytest-asyncio" },
    { name = "pytest-mock" },
@@ -914,41 +912,6 @@ wheels = [
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 ]

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-
 [[package]]
 name = "pydantic"
 version = "2.12.5"
@@ -22,6 +22,24 @@ DEFAULT_IMAGE_DISTRO = "debian"
 _BUILD_TOOLS = ("pip", "setuptools", "wheel")


+def _build_server_config_env(config: Config) -> str:
+    """Build the AGENT_SERVER_CONFIG env var line from a validated config."""
+    server_config: dict = {"graphs": config["graphs"]}
+    for key in (
+        "store",
+        "auth",
+        "encryption",
+        "http",
+        "webhooks",
+        "checkpointer",
+        "ui",
+        "ui_config",
+    ):
+        if (value := config.get(key)) is not None:
+            server_config[key] = value
+    return f"ENV AGENT_SERVER_CONFIG='{json.dumps(server_config)}'"
+
+
 def _get_pip_cleanup_lines(
    install_cmd: str,
    to_uninstall: tuple[str] | None,
@@ -1006,37 +1024,14 @@ ADD {relpath} /deps/{name}
        )
    )

-    env_vars = []
-
-    if (store_config := config.get("store")) is not None:
-        env_vars.append(f"ENV LANGGRAPH_STORE='{json.dumps(store_config)}'")
-
-    if (auth_config := config.get("auth")) is not None:
-        env_vars.append(f"ENV LANGGRAPH_AUTH='{json.dumps(auth_config)}'")
-
-    if (encryption_config := config.get("encryption")) is not None:
-        env_vars.append(f"ENV LANGGRAPH_ENCRYPTION='{json.dumps(encryption_config)}'")
-
-    if (http_config := config.get("http")) is not None:
-        env_vars.append(f"ENV LANGGRAPH_HTTP='{json.dumps(http_config)}'")
-
-    # Inject webhooks configuration if provided
-    if (webhooks_config := config.get("webhooks")) is not None:
-        env_vars.append(f"ENV LANGGRAPH_WEBHOOKS='{json.dumps(webhooks_config)}'")
-
-    if (checkpointer_config := config.get("checkpointer")) is not None:
-        env_vars.append(
-            f"ENV LANGGRAPH_CHECKPOINTER='{json.dumps(checkpointer_config)}'"
-        )
-
+    env_vars = [_build_server_config_env(config)]
+    # JS build/runtime scripts read these env vars directly
+    env_vars.append(f"ENV LANGSERVE_GRAPHS='{json.dumps(config['graphs'])}'")
    if (ui := config.get("ui")) is not None:
        env_vars.append(f"ENV LANGGRAPH_UI='{json.dumps(ui)}'")
-
    if (ui_config := config.get("ui_config")) is not None:
        env_vars.append(f"ENV LANGGRAPH_UI_CONFIG='{json.dumps(ui_config)}'")

-    env_vars.append(f"ENV LANGSERVE_GRAPHS='{json.dumps(config['graphs'])}'")
-
    js_inst_str: str = ""
    if (config.get("ui") or config.get("node_version")) and local_deps.working_dir:
        js_inst_str = os.linesep.join(
@@ -1137,37 +1132,14 @@ def node_config_to_docker(

    image_str = docker_tag(config, base_image, api_version)

-    env_vars: list[str] = []
-
-    if (store_config := config.get("store")) is not None:
-        env_vars.append(f"ENV LANGGRAPH_STORE='{json.dumps(store_config)}'")
-
-    if (auth_config := config.get("auth")) is not None:
-        env_vars.append(f"ENV LANGGRAPH_AUTH='{json.dumps(auth_config)}'")
-
-    if (encryption_config := config.get("encryption")) is not None:
-        env_vars.append(f"ENV LANGGRAPH_ENCRYPTION='{json.dumps(encryption_config)}'")
-
-    if (http_config := config.get("http")) is not None:
-        env_vars.append(f"ENV LANGGRAPH_HTTP='{json.dumps(http_config)}'")
-
-    # Inject webhooks configuration if provided
-    if (webhooks_config := config.get("webhooks")) is not None:
-        env_vars.append(f"ENV LANGGRAPH_WEBHOOKS='{json.dumps(webhooks_config)}'")
-
-    if (checkpointer_config := config.get("checkpointer")) is not None:
-        env_vars.append(
-            f"ENV LANGGRAPH_CHECKPOINTER='{json.dumps(checkpointer_config)}'"
-        )
-
+    env_vars: list[str] = [_build_server_config_env(config)]
+    # JS build/runtime scripts read these env vars directly
+    env_vars.append(f"ENV LANGSERVE_GRAPHS='{json.dumps(config['graphs'])}'")
    if ui := config.get("ui"):
        env_vars.append(f"ENV LANGGRAPH_UI='{json.dumps(ui)}'")
-
    if ui_config := config.get("ui_config"):
        env_vars.append(f"ENV LANGGRAPH_UI_CONFIG='{json.dumps(ui_config)}'")

-    env_vars.append(f"ENV LANGSERVE_GRAPHS='{json.dumps(config['graphs'])}'")
-
    # For monorepo support, we need to handle install and build commands differently
    if build_context:
        # Monorepo case: install from root, build from config directory
@@ -128,7 +128,7 @@ class SerdeConfig(TypedDict, total=False):
    If omitted, no serde is set up (the object store will still be present, however)."""

    allowed_json_modules: list[list[str]] | bool | None
-    """Optional. List of allowed python modules to de-serialize custom objects from JSON.
+    """Optional. List of allowed python modules to de-serialize custom objects from.
    
    If provided, only the specified modules will be allowed to be deserialized.
    If omitted, no modules are allowed, and the object returned will simply be a json object OR
@@ -148,34 +148,7 @@ class SerdeConfig(TypedDict, total=False):
    Example:
    {...
        "serde": {
-            "allowed_json_modules": True
-        }
-    }
-
-    """
-    allowed_msgpack_modules: list[list[str]] | bool | None
-    """Optional. List of allowed python modules to de-serialize custom objects from msgpack.
-
-    Known safe types (langgraph.checkpoint.serde.jsonplus.SAFE_MSGPACK_TYPES) are always
-    allowed regardless of this setting. Use this to allowlist your custom Pydantic models,
-    dataclasses, and other user-defined types.
-
-    If True (default), unregistered types will log a warning but still be deserialized.
-    If None, only known safe types will be deserialized; unregistered types will be blocked.
-
-    Example - allowlist specific types (no warnings for these):
-    {...
-        "serde": {
-            "allowed_msgpack_modules": [
-                ["my_agent.models", "MyState"],
-            ]
-        }
-    }
-
-    Example - strict mode (only safe types allowed):
-    {...
-        "serde": {
-            "allowed_msgpack_modules": null
+            "allowed_json_modules": true
        }
    }
    
@@ -355,7 +328,8 @@ class EncryptionConfig(TypedDict, total=False):
    """Configuration for custom at-rest encryption logic.

    Allows you to implement custom encryption for sensitive data stored in the database,
-    including metadata fields and checkpoint blobs."""
+    including metadata fields and checkpoint blobs.
+    """

    path: str
    """Required. Path to an instance of the Encryption() class that implements custom encryption handlers.
@@ -739,9 +713,28 @@ class Config(TypedDict, total=False):
    """


+class ServerConfig(TypedDict, total=False):
+    """Unified server configuration emitted as ``AGENT_SERVER_CONFIG``.
+
+    Mirrors the server-side ``ServerConfig`` but only contains fields
+    relevant to the CLI's Dockerfile / docker-compose emission.
+    """
+
+    graphs: dict[str, str]
+    store: StoreConfig | None
+    auth: AuthConfig | None
+    encryption: EncryptionConfig | None
+    http: HttpConfig | None
+    webhooks: WebhooksConfig | None
+    checkpointer: CheckpointerConfig | None
+    ui: dict[str, str] | None
+    ui_config: dict | None
+
+
 __all__ = [
    "Config",
    "GraphDef",
+    "ServerConfig",
    "StoreConfig",
    "CheckpointerConfig",
    "AuthConfig",
@@ -608,27 +608,7 @@
              "type": "null"
            }
          ],
-          "description": "Optional. List of allowed python modules to de-serialize custom objects from JSON.\n\nIf provided, only the specified modules will be allowed to be deserialized.\nIf omitted, no modules are allowed, and the object returned will simply be a json object OR\na deserialized langchain object.\n"
-        },
-        "allowed_msgpack_modules": {
-          "anyOf": [
-            {
-              "type": "array",
-              "items": {
-                "type": "array",
-                "items": {
-                  "type": "string"
-                }
-              }
-            },
-            {
-              "type": "boolean"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "Optional. List of allowed python modules to de-serialize custom objects from msgpack.\n\nKnown safe types (langgraph.checkpoint.serde.jsonplus.SAFE_MSGPACK_TYPES) are always\nallowed regardless of this setting. Use this to allowlist your custom Pydantic models,\ndataclasses, and other user-defined types.\n\nIf True (default), unregistered types will log a warning but still be deserialized.\nIf None, only known safe types will be deserialized; unregistered types will be blocked.\n\n{...\n[\"my_agent.models\", \"MyState\"],\n]\n}\n}\n\n{...\n}\n}\n\n"
+          "description": "Optional. List of allowed python modules to de-serialize custom objects from.\n\nIf provided, only the specified modules will be allowed to be deserialized.\nIf omitted, no modules are allowed, and the object returned will simply be a json object OR\na deserialized langchain object.\n"
        },
        "pickle_fallback": {
          "type": "boolean",
@@ -608,27 +608,7 @@
              "type": "null"
            }
          ],
-          "description": "Optional. List of allowed python modules to de-serialize custom objects from JSON.\n\nIf provided, only the specified modules will be allowed to be deserialized.\nIf omitted, no modules are allowed, and the object returned will simply be a json object OR\na deserialized langchain object.\n"
-        },
-        "allowed_msgpack_modules": {
-          "anyOf": [
-            {
-              "type": "array",
-              "items": {
-                "type": "array",
-                "items": {
-                  "type": "string"
-                }
-              }
-            },
-            {
-              "type": "boolean"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "Optional. List of allowed python modules to de-serialize custom objects from msgpack.\n\nKnown safe types (langgraph.checkpoint.serde.jsonplus.SAFE_MSGPACK_TYPES) are always\nallowed regardless of this setting. Use this to allowlist your custom Pydantic models,\ndataclasses, and other user-defined types.\n\nIf True (default), unregistered types will log a warning but still be deserialized.\nIf None, only known safe types will be deserialized; unregistered types will be blocked.\n\n{...\n[\"my_agent.models\", \"MyState\"],\n]\n}\n}\n\n{...\n}\n}\n\n"
+          "description": "Optional. List of allowed python modules to de-serialize custom objects from.\n\nIf provided, only the specified modules will be allowed to be deserialized.\nIf omitted, no modules are allowed, and the object returned will simply be a json object OR\na deserialized langchain object.\n"
        },
        "pickle_fallback": {
          "type": "boolean",
@@ -152,6 +152,7 @@ services:
                # -- Installing all local dependencies --
                RUN for dep in /deps/*; do             echo "Installing $$dep";             if [ -d "$$dep" ]; then                 echo "Installing $$dep";                 (cd "$$dep" && PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
                # -- End of local dependencies install --
+                ENV AGENT_SERVER_CONFIG='{{"graphs": {{"agent": "agent.py:graph"}}}}'
                ENV LANGSERVE_GRAPHS='{{"agent": "agent.py:graph"}}'
 {textwrap.indent(textwrap.dedent(FORMATTED_CLEANUP_LINES), "                ")}
                WORKDIR /deps/cli
@@ -474,7 +474,7 @@ RUN set -ex && \\
 # -- Installing all local dependencies --
 RUN for dep in /deps/*; do             echo "Installing $dep";             if [ -d "$dep" ]; then                 echo "Installing $dep";                 (cd "$dep" && PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
 # -- End of local dependencies install --
-ENV LANGGRAPH_HTTP='{{"app": "/deps/examples/my_app.py:app"}}'
+ENV AGENT_SERVER_CONFIG='{{"graphs": {{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}, "http": {{"app": "/deps/examples/my_app.py:app"}}}}'
 ENV LANGSERVE_GRAPHS='{{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}'
 {FORMATTED_CLEANUP_LINES}
 WORKDIR /deps/outer-unit_tests/unit_tests\
@@ -531,6 +531,7 @@ RUN set -ex && \\
 # -- Installing all local dependencies --
 RUN for dep in /deps/*; do             echo "Installing $dep";             if [ -d "$dep" ]; then                 echo "Installing $dep";                 (cd "$dep" && PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
 # -- End of local dependencies install --
+ENV AGENT_SERVER_CONFIG='{"graphs": {"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}'
 ENV LANGSERVE_GRAPHS='{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}'
 """
        + FORMATTED_CLEANUP_LINES
@@ -578,6 +579,7 @@ RUN set -ex && \\
 # -- Installing all local dependencies --
 RUN for dep in /deps/*; do             echo "Installing $dep";             if [ -d "$dep" ]; then                 echo "Installing $dep";                 (cd "$dep" && PIP_CONFIG_FILE=/pipconfig.txt PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
 # -- End of local dependencies install --
+ENV AGENT_SERVER_CONFIG='{"graphs": {"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}'
 ENV LANGSERVE_GRAPHS='{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}'
 """
        + FORMATTED_CLEANUP_LINES
@@ -640,6 +642,7 @@ RUN set -ex && \\
 # -- Installing all local dependencies --
 RUN for dep in /deps/*; do             echo "Installing $dep";             if [ -d "$dep" ]; then                 echo "Installing $dep";                 (cd "$dep" && PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
 # -- End of local dependencies install --
+ENV AGENT_SERVER_CONFIG='{{"graphs": {{"agent": "/deps/outer-graphs/src/agent.py:graph"}}}}'
 ENV LANGSERVE_GRAPHS='{{"agent": "/deps/outer-graphs/src/agent.py:graph"}}'
 {FORMATTED_CLEANUP_LINES}\
 """
@@ -676,6 +679,7 @@ ADD . /deps/unit_tests
 # -- Installing all local dependencies --
 RUN for dep in /deps/*; do             echo "Installing $dep";             if [ -d "$dep" ]; then                 echo "Installing $dep";                 (cd "$dep" && PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
 # -- End of local dependencies install --
+ENV AGENT_SERVER_CONFIG='{"graphs": {"agent": "/deps/unit_tests/graphs/agent.py:graph"}}'
 ENV LANGSERVE_GRAPHS='{"agent": "/deps/unit_tests/graphs/agent.py:graph"}'
 """
        + FORMATTED_CLEANUP_LINES
@@ -724,6 +728,7 @@ RUN set -ex && \\
 # -- Installing all local dependencies --
 RUN for dep in /deps/*; do             echo "Installing $dep";             if [ -d "$dep" ]; then                 echo "Installing $dep";                 (cd "$dep" && PIP_CONFIG_FILE=/pipconfig.txt PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
 # -- End of local dependencies install --
+ENV AGENT_SERVER_CONFIG='{{"graphs": {{"agent": "/deps/outer-graphs/src/agent.py:graph"}}}}'
 ENV LANGSERVE_GRAPHS='{{"agent": "/deps/outer-graphs/src/agent.py:graph"}}'
 {FORMATTED_CLEANUP_LINES}"""
    assert clean_empty_lines(actual_docker_stdin) == expected_docker_stdin
@@ -752,10 +757,10 @@ ARG meow
 ARG foo
 ADD . /deps/unit_tests
 RUN cd /deps/unit_tests && npm i
-ENV LANGGRAPH_AUTH='{"path": "./graphs/auth.mts:auth"}'
+ENV AGENT_SERVER_CONFIG='{"graphs": {"agent": "./graphs/agent.js:graph"}, "auth": {"path": "./graphs/auth.mts:auth"}, "ui": {"agent": "./graphs/agent.ui.jsx"}, "ui_config": {"shared": ["nuqs"]}}'
+ENV LANGSERVE_GRAPHS='{"agent": "./graphs/agent.js:graph"}'
 ENV LANGGRAPH_UI='{"agent": "./graphs/agent.ui.jsx"}'
 ENV LANGGRAPH_UI_CONFIG='{"shared": ["nuqs"]}'
-ENV LANGSERVE_GRAPHS='{"agent": "./graphs/agent.js:graph"}'
 WORKDIR /deps/unit_tests
 RUN (test ! -f /api/langgraph_api/js/build.mts && echo "Prebuild script not found, skipping") || tsx /api/langgraph_api/js/build.mts"""

@@ -809,8 +814,8 @@ def test_config_to_docker_python_encryption_formatted():
        ),
        base_image="langchain/langgraph-api",
    )
-    # Verify that LANGGRAPH_ENCRYPTION is in the docker output with the correct path
-    assert "LANGGRAPH_ENCRYPTION=" in actual_docker_stdin
+    # Verify that AGENT_SERVER_CONFIG contains encryption with the correct path
+    assert "AGENT_SERVER_CONFIG=" in actual_docker_stdin
    assert (
        "/deps/outer-unit_tests/unit_tests/agent.py:my_encryption"
        in actual_docker_stdin
@@ -839,10 +844,10 @@ ARG meow
 ARG foo
 ADD . /deps/unit_tests
 RUN cd /deps/unit_tests && npm i
-ENV LANGGRAPH_AUTH='{"path": "./graphs/auth.mts:auth"}'
+ENV AGENT_SERVER_CONFIG='{"graphs": {"agent": "./graphs/agent.js:graph"}, "auth": {"path": "./graphs/auth.mts:auth"}, "ui": {"agent": "./graphs/agent.ui.jsx"}, "ui_config": {"shared": ["nuqs"]}}'
+ENV LANGSERVE_GRAPHS='{"agent": "./graphs/agent.js:graph"}'
 ENV LANGGRAPH_UI='{"agent": "./graphs/agent.ui.jsx"}'
 ENV LANGGRAPH_UI_CONFIG='{"shared": ["nuqs"]}'
-ENV LANGSERVE_GRAPHS='{"agent": "./graphs/agent.js:graph"}'
 WORKDIR /deps/unit_tests
 RUN (test ! -f /api/langgraph_api/js/build.mts && echo "Prebuild script not found, skipping") || tsx /api/langgraph_api/js/build.mts"""

@@ -850,14 +855,14 @@ RUN (test ! -f /api/langgraph_api/js/build.mts && echo "Prebuild script not foun
    assert additional_contexts == {}


-def _extract_env_json(dockerfile: str, var_name: str) -> dict:
-    """Helper to extract and parse a JSON value from an ENV line in a Dockerfile."""
-    line_prefix = f"ENV {var_name}='"
+def _extract_server_config(dockerfile: str) -> dict:
+    """Helper to extract and parse the AGENT_SERVER_CONFIG JSON from a Dockerfile."""
+    line_prefix = "ENV AGENT_SERVER_CONFIG='"
    for line in dockerfile.splitlines():
        if line.startswith(line_prefix) and line.endswith("'"):
            json_str = line[len(line_prefix) : -1]
            return json.loads(json_str)
-    raise AssertionError(f"{var_name} not found in Dockerfile env lines")
+    raise AssertionError("AGENT_SERVER_CONFIG not found in Dockerfile env lines")


 def test_config_to_docker_webhooks_python():
@@ -890,8 +895,8 @@ def test_config_to_docker_webhooks_python():
    )

    # Ensure the ENV line is present and the payload round-trips via JSON
-    parsed = _extract_env_json(dockerfile, "LANGGRAPH_WEBHOOKS")
-    assert parsed == webhooks
+    server_config = _extract_server_config(dockerfile)
+    assert server_config["webhooks"] == webhooks


 def test_config_to_docker_webhooks_node():
@@ -914,8 +919,8 @@ def test_config_to_docker_webhooks_node():
        base_image="langchain/langgraphjs-api",
    )

-    parsed = _extract_env_json(dockerfile, "LANGGRAPH_WEBHOOKS")
-    assert parsed == webhooks
+    server_config = _extract_server_config(dockerfile)
+    assert server_config["webhooks"] == webhooks


 def test_config_to_docker_no_webhooks():
@@ -926,7 +931,8 @@ def test_config_to_docker_no_webhooks():
        base_image="langchain/langgraph-api",
    )

-    assert "ENV LANGGRAPH_WEBHOOKS=" not in dockerfile
+    server_config = _extract_server_config(dockerfile)
+    assert "webhooks" not in server_config


 def test_config_to_docker_gen_ui_python():
@@ -963,9 +969,10 @@ RUN set -ex && \\
 # -- Installing all local dependencies --
 RUN for dep in /deps/*; do             echo "Installing $dep";             if [ -d "$dep" ]; then                 echo "Installing $dep";                 (cd "$dep" && PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
 # -- End of local dependencies install --
+ENV AGENT_SERVER_CONFIG='{{"graphs": {{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}, "ui": {{"agent": "./graphs/agent.ui.jsx"}}, "ui_config": {{"shared": ["nuqs"]}}}}'
+ENV LANGSERVE_GRAPHS='{{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}'
 ENV LANGGRAPH_UI='{{"agent": "./graphs/agent.ui.jsx"}}'
 ENV LANGGRAPH_UI_CONFIG='{{"shared": ["nuqs"]}}'
-ENV LANGSERVE_GRAPHS='{{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}'
 # -- Installing JS dependencies --
 ENV NODE_VERSION=20
 RUN cd /deps/outer-unit_tests/unit_tests && npm i && tsx /api/langgraph_api/js/build.mts
@@ -1009,6 +1016,7 @@ RUN set -ex && \\
 # -- Installing all local dependencies --
 RUN for dep in /deps/*; do             echo "Installing $dep";             if [ -d "$dep" ]; then                 echo "Installing $dep";                 (cd "$dep" && PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
 # -- End of local dependencies install --
+ENV AGENT_SERVER_CONFIG='{{"graphs": {{"python": "/deps/outer-unit_tests/unit_tests/multiplatform/python.py:graph", "js": "/deps/outer-unit_tests/unit_tests/multiplatform/js.mts:graph"}}}}'
 ENV LANGSERVE_GRAPHS='{{"python": "/deps/outer-unit_tests/unit_tests/multiplatform/python.py:graph", "js": "/deps/outer-unit_tests/unit_tests/multiplatform/js.mts:graph"}}'
 # -- Installing JS dependencies --
 ENV NODE_VERSION=22
@@ -1150,6 +1158,7 @@ def test_config_to_compose_simple_config():
                # -- Installing all local dependencies --
                RUN for dep in /deps/*; do             echo "Installing $$dep";             if [ -d "$$dep" ]; then                 echo "Installing $$dep";                 (cd "$$dep" && PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
                # -- End of local dependencies install --
+                ENV AGENT_SERVER_CONFIG='{{"graphs": {{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}}}'
                ENV LANGSERVE_GRAPHS='{{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}'
 {textwrap.indent(textwrap.dedent(FORMATTED_CLEANUP_LINES), "                ")}
                WORKDIR /deps/outer-unit_tests/unit_tests
@@ -1191,6 +1200,7 @@ def test_config_to_compose_env_vars():
                # -- Installing all local dependencies --
                RUN for dep in /deps/*; do             echo "Installing $$dep";             if [ -d "$$dep" ]; then                 echo "Installing $$dep";                 (cd "$$dep" && PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
                # -- End of local dependencies install --
+                ENV AGENT_SERVER_CONFIG='{{"graphs": {{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}}}'
                ENV LANGSERVE_GRAPHS='{{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}'
 {textwrap.indent(textwrap.dedent(FORMATTED_CLEANUP_LINES), "                ")}
                WORKDIR /deps/outer-unit_tests/unit_tests
@@ -1236,6 +1246,7 @@ def test_config_to_compose_env_file():
                # -- Installing all local dependencies --
                RUN for dep in /deps/*; do             echo "Installing $$dep";             if [ -d "$$dep" ]; then                 echo "Installing $$dep";                 (cd "$$dep" && PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
                # -- End of local dependencies install --
+                ENV AGENT_SERVER_CONFIG='{{"graphs": {{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}}}'
                ENV LANGSERVE_GRAPHS='{{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}'
 {textwrap.indent(textwrap.dedent(FORMATTED_CLEANUP_LINES), "                ")}
                WORKDIR /deps/outer-unit_tests/unit_tests
@@ -1274,6 +1285,7 @@ def test_config_to_compose_watch():
                # -- Installing all local dependencies --
                RUN for dep in /deps/*; do             echo "Installing $$dep";             if [ -d "$$dep" ]; then                 echo "Installing $$dep";                 (cd "$$dep" && PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
                # -- End of local dependencies install --
+                ENV AGENT_SERVER_CONFIG='{{"graphs": {{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}}}'
                ENV LANGSERVE_GRAPHS='{{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}'
 {textwrap.indent(textwrap.dedent(FORMATTED_CLEANUP_LINES), "                ")}
                WORKDIR /deps/outer-unit_tests/unit_tests
@@ -1321,6 +1333,7 @@ def test_config_to_compose_end_to_end():
                # -- Installing all local dependencies --
                RUN for dep in /deps/*; do             echo "Installing $$dep";             if [ -d "$$dep" ]; then                 echo "Installing $$dep";                 (cd "$$dep" && PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .);             fi;         done
                # -- End of local dependencies install --
+                ENV AGENT_SERVER_CONFIG='{{"graphs": {{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}}}'
                ENV LANGSERVE_GRAPHS='{{"agent": "/deps/outer-unit_tests/unit_tests/agent.py:graph"}}'
 {textwrap.indent(textwrap.dedent(FORMATTED_CLEANUP_LINES), "                ")}
                WORKDIR /deps/outer-unit_tests/unit_tests
@@ -1071,15 +1071,15 @@ wheels = [

 [[package]]
 name = "langgraph-sdk"
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 [[package]]
@@ -87,15 +87,15 @@ integration_tests:

 WORKERS ?= auto
 XDIST_ARGS := $(if $(WORKERS),-n $(WORKERS) --dist worksteal,)
-MAXFAIL ?= 1
-MAXFAIL_ARGS = $(if $(MAXFAIL),--maxfail $(MAXFAIL),)
+MAXFAIL ?=
+MAXFAIL_ARGS := $(if $(MAXFAIL),--maxfail $(MAXFAIL),)
 # Add an '-x' if xdist is enabled
 XDIST_ARGS := $(if $(WORKERS),-x $(XDIST_ARGS),)

 test_watch:
 	make start-services &&\
 	make start-dev-server &&\
-	uv run ptw -- --ff -vv $(XDIST_ARGS) $(MAXFAIL_ARGS) $(TEST); \
+	uv run ptw . -- --ff -vv $(XDIST_ARGS) $(MAXFAIL_ARGS) $(TEST); \
 	EXIT_CODE=$$?; \
 	make stop-services; \
 	make stop-dev-server; \
@@ -130,7 +130,7 @@ type:

 format format_diff:
 	uv run ruff format $(PYTHON_FILES)
-	uv run ruff check --fix $(PYTHON_FILES)
+	uv run ruff check --select I --fix $(PYTHON_FILES)

 spell_check:
 	uv run codespell --toml pyproject.toml
@@ -10,7 +10,6 @@ from bench.fanout_to_subgraph import fanout_to_subgraph, fanout_to_subgraph_sync
 from bench.pydantic_state import pydantic_state
 from bench.react_agent import react_agent
 from bench.sequential import create_sequential
-from bench.serde_allowlist import collect_allowlist_large, collect_allowlist_small
 from bench.wide_dict import wide_dict
 from bench.wide_state import wide_state
 from langgraph.graph import StateGraph
@@ -514,7 +513,3 @@ compilation_benchmarks = (

 for name, graph in compilation_benchmarks:
    r.bench_func(name + "_compilation", compile_graph, graph)
-
-# Serde allowlist collection
-r.bench_func("serde_allowlist_small", collect_allowlist_small)
-r.bench_func("serde_allowlist_large", collect_allowlist_large)
@@ -1,81 +0,0 @@
-from __future__ import annotations
-
-from collections import deque
-from dataclasses import dataclass
-from enum import Enum
-from typing import Annotated
-
-from pydantic import BaseModel
-from typing_extensions import NotRequired, TypedDict
-
-from langgraph._internal._serde import collect_allowlist_from_schemas
-
-
-class Color(Enum):
-    RED = "red"
-    BLUE = "blue"
-
-
-@dataclass
-class InnerDataclass:
-    value: int
-
-
-class InnerModel(BaseModel):
-    name: str
-
-
-class InnerTyped(TypedDict):
-    payload: InnerDataclass
-    optional: NotRequired[InnerModel]
-
-
-@dataclass
-class Node:
-    value: int
-    child: Node | None = None
-
-
-@dataclass
-class NestedDataclass:
-    inner: InnerDataclass
-    items: list[InnerModel]
-    mapping: dict[str, InnerDataclass]
-    optional: InnerModel | None
-    union: InnerDataclass | InnerModel
-    queue: deque[InnerDataclass]
-    frozen: frozenset[InnerModel]
-
-
-AnnotatedList = Annotated[list[InnerDataclass], "meta"]
-
-
-class DummyChannel:
-    @property
-    def ValueType(self) -> type[InnerDataclass]:
-        return InnerDataclass
-
-    @property
-    def UpdateType(self) -> type[InnerModel]:
-        return InnerModel
-
-
-SCHEMAS_SMALL = [InnerDataclass, InnerModel, Color]
-SCHEMAS_LARGE = [
-    InnerDataclass,
-    InnerModel,
-    Color,
-    InnerTyped,
-    Node,
-    NestedDataclass,
-    AnnotatedList,
-]
-CHANNELS = {"a": DummyChannel(), "b": DummyChannel()}
-
-
-def collect_allowlist_small() -> None:
-    collect_allowlist_from_schemas(schemas=SCHEMAS_SMALL, channels=CHANNELS)
-
-
-def collect_allowlist_large() -> None:
-    collect_allowlist_from_schemas(schemas=SCHEMAS_LARGE, channels=CHANNELS)
@@ -1,253 +0,0 @@
-from __future__ import annotations
-
-import dataclasses
-import logging
-import sys
-import types
-from collections import deque
-from enum import Enum
-from typing import (
-    Annotated,
-    Any,
-    Literal,
-    Union,
-    get_args,
-    get_origin,
-    get_type_hints,
-)
-
-from langchain_core import messages as lc_messages
-from langgraph.checkpoint.base import BaseCheckpointSaver
-from pydantic import BaseModel
-from typing_extensions import NotRequired, Required, is_typeddict
-
-try:
-    from langgraph.checkpoint.serde._msgpack import (  # noqa: F401
-        STRICT_MSGPACK_ENABLED,
-    )
-except ImportError:
-    STRICT_MSGPACK_ENABLED = False
-
-_warned_allowlist_unsupported = False
-
-logger = logging.getLogger(__name__)
-
-
-def _supports_checkpointer_allowlist() -> bool:
-    return hasattr(BaseCheckpointSaver, "with_allowlist")
-
-
-_SUPPORTS_ALLOWLIST = _supports_checkpointer_allowlist()
-
-
-def apply_checkpointer_allowlist(
-    checkpointer: Any, allowlist: set[tuple[str, ...]] | None
-) -> Any:
-    if not checkpointer or allowlist is None or checkpointer in (True, False):
-        return checkpointer
-    if not _SUPPORTS_ALLOWLIST:
-        global _warned_allowlist_unsupported
-        if not _warned_allowlist_unsupported:
-            logger.warning(
-                "Checkpointer does not support with_allowlist; strict msgpack "
-                "allowlist will be skipped."
-            )
-            _warned_allowlist_unsupported = True
-        return checkpointer
-    return checkpointer.with_allowlist(allowlist)
-
-
-def curated_core_allowlist() -> set[tuple[str, ...]]:
-    allowlist: set[tuple[str, ...]] = set()
-    for name in (
-        "BaseMessage",
-        "BaseMessageChunk",
-        "HumanMessage",
-        "HumanMessageChunk",
-        "AIMessage",
-        "AIMessageChunk",
-        "SystemMessage",
-        "SystemMessageChunk",
-        "ChatMessage",
-        "ChatMessageChunk",
-        "ToolMessage",
-        "ToolMessageChunk",
-        "FunctionMessage",
-        "FunctionMessageChunk",
-        "RemoveMessage",
-    ):
-        cls = getattr(lc_messages, name, None)
-        if cls is None:
-            continue
-        allowlist.add((cls.__module__, cls.__name__))
-
-    return allowlist
-
-
-def build_serde_allowlist(
-    *,
-    schemas: list[type[Any]] | None = None,
-    channels: dict[str, Any] | None = None,
-) -> set[tuple[str, ...]]:
-    allowlist = curated_core_allowlist()
-    if schemas:
-        schemas = [schema for schema in schemas if schema is not None]
-    return allowlist | collect_allowlist_from_schemas(
-        schemas=schemas,
-        channels=channels,
-    )
-
-
-def collect_allowlist_from_schemas(
-    *,
-    schemas: list[type[Any]] | None = None,
-    channels: dict[str, Any] | None = None,
-) -> set[tuple[str, ...]]:
-    allowlist: set[tuple[str, ...]] = set()
-    seen: set[Any] = set()
-    seen_ids: set[int] = set()
-
-    if schemas:
-        for schema in schemas:
-            _collect_from_type(schema, allowlist, seen, seen_ids)
-
-    if channels:
-        for channel in channels.values():
-            value_type = getattr(channel, "ValueType", None)
-            if value_type is not None:
-                _collect_from_type(value_type, allowlist, seen, seen_ids)
-            update_type = getattr(channel, "UpdateType", None)
-            if update_type is not None:
-                _collect_from_type(update_type, allowlist, seen, seen_ids)
-
-    return allowlist
-
-
-def _collect_from_type(
-    typ: Any,
-    allowlist: set[tuple[str, ...]],
-    seen: set[Any],
-    seen_ids: set[int],
-) -> None:
-    if _already_seen(typ, seen, seen_ids):
-        return
-
-    if typ is Any or typ is None:
-        return
-
-    if typ is Literal:
-        return
-
-    if isinstance(typ, types.UnionType):
-        for arg in typ.__args__:
-            _collect_from_type(arg, allowlist, seen, seen_ids)
-        return
-
-    origin = get_origin(typ)
-    if origin is Union:
-        for arg in get_args(typ):
-            _collect_from_type(arg, allowlist, seen, seen_ids)
-        return
-    if origin is Annotated or origin in (Required, NotRequired):
-        args = get_args(typ)
-        if args:
-            _collect_from_type(args[0], allowlist, seen, seen_ids)
-        return
-
-    if origin is Literal:
-        return
-
-    if origin in (list, set, tuple, dict, deque, frozenset):
-        for arg in get_args(typ):
-            _collect_from_type(arg, allowlist, seen, seen_ids)
-        return
-
-    if hasattr(typ, "__supertype__"):
-        _collect_from_type(typ.__supertype__, allowlist, seen, seen_ids)
-        return
-
-    if is_typeddict(typ):
-        for field_type in _safe_get_type_hints(typ).values():
-            _collect_from_type(field_type, allowlist, seen, seen_ids)
-        return
-
-    if _is_pydantic_model(typ):
-        allowlist.add((typ.__module__, typ.__name__))
-        field_types = _safe_get_type_hints(typ)
-        if field_types:
-            for field_type in field_types.values():
-                _collect_from_type(field_type, allowlist, seen, seen_ids)
-        else:
-            for field_type in _pydantic_field_types(typ):
-                _collect_from_type(field_type, allowlist, seen, seen_ids)
-        return
-
-    if dataclasses.is_dataclass(typ):
-        if typ_name := getattr(typ, "__name__", None):
-            allowlist.add((typ.__module__, typ_name))
-        field_types = _safe_get_type_hints(typ)
-        if field_types:
-            for field_type in field_types.values():
-                _collect_from_type(field_type, allowlist, seen, seen_ids)
-        else:
-            for field in dataclasses.fields(typ):
-                _collect_from_type(field.type, allowlist, seen, seen_ids)
-        return
-
-    if isinstance(typ, type) and issubclass(typ, Enum):
-        allowlist.add((typ.__module__, typ.__name__))
-        return
-
-
-def _already_seen(typ: Any, seen: set[Any], seen_ids: set[int]) -> bool:
-    try:
-        if typ in seen:
-            return True
-        seen.add(typ)
-        return False
-    except TypeError:
-        typ_id = id(typ)
-        if typ_id in seen_ids:
-            return True
-        seen_ids.add(typ_id)
-        return False
-
-
-def _safe_get_type_hints(typ: Any) -> dict[str, Any]:
-    try:
-        module = sys.modules.get(getattr(typ, "__module__", ""))
-        globalns = module.__dict__ if module else None
-        localns = dict(vars(typ)) if hasattr(typ, "__dict__") else None
-        return get_type_hints(
-            typ, globalns=globalns, localns=localns, include_extras=True
-        )
-    except Exception:
-        return {}
-
-
-def _is_pydantic_model(typ: Any) -> bool:
-    if not isinstance(typ, type):
-        return False
-    if issubclass(typ, BaseModel):
-        return True
-    try:
-        from pydantic.v1 import BaseModel as BaseModelV1
-    except Exception:
-        return False
-    return issubclass(typ, BaseModelV1)
-
-
-def _pydantic_field_types(typ: type[Any]) -> list[Any]:
-    if hasattr(typ, "model_fields"):
-        return [
-            field.annotation
-            for field in typ.model_fields.values()
-            if getattr(field, "annotation", None) is not None
-        ]
-    if hasattr(typ, "__fields__"):
-        return [
-            field.outer_type_
-            for field in typ.__fields__.values()
-            if getattr(field, "outer_type_", None) is not None
-        ]
-    return []
@@ -20,7 +20,6 @@ from langgraph.checkpoint.base import BaseCheckpointSaver
 from langgraph.store.base import BaseStore
 from typing_extensions import Unpack

-from langgraph._internal import _serde
 from langgraph._internal._constants import CACHE_NS_WRITES, PREVIOUS
 from langgraph._internal._typing import MISSING, DeprecatedKwargs
 from langgraph.channels.ephemeral_value import EphemeralValue
@@ -529,7 +528,7 @@ class entrypoint(Generic[ContextT]):
                else:
                    output_type = save_type = sig.return_annotation

-        graph: Pregel[Any, ContextT, Any, Any] = Pregel(
+        return Pregel(
            nodes={
                func.__name__: PregelNode(
                    bound=bound,
@@ -560,16 +559,5 @@ class entrypoint(Generic[ContextT]):
            cache=self.cache,
            cache_policy=self.cache_policy,
            retry_policy=self.retry_policy or (),
-            context_schema=self.context_schema,
+            context_schema=self.context_schema,  # type: ignore[arg-type]
        )
-        if _serde.STRICT_MSGPACK_ENABLED:
-            serde_allowlist = _serde.build_serde_allowlist(
-                schemas=[input_type, output_type, save_type]
-                + ([self.context_schema] if self.context_schema is not None else []),
-                channels=graph.channels,
-            )
-            graph._serde_allowlist = serde_allowlist
-            graph.checkpointer = _serde.apply_checkpointer_allowlist(
-                graph.checkpointer, serde_allowlist
-            )
-        return graph
@@ -29,7 +29,6 @@ from langgraph.store.base import BaseStore
 from pydantic import BaseModel, TypeAdapter
 from typing_extensions import NotRequired, Required, Self, Unpack, is_typeddict

-from langgraph._internal import _serde
 from langgraph._internal._constants import (
    INTERRUPT,
    NS_END,
@@ -1080,28 +1079,6 @@ class StateGraph(Generic[StateT, ContextT, InputT, OutputT]):
            CompiledStateGraph: The compiled `StateGraph`.
        """
        checkpointer = ensure_valid_checkpointer(checkpointer)
-        serde_allowlist: set[tuple[str, ...]] | None = None
-        if _serde.STRICT_MSGPACK_ENABLED:
-            schema_types: list[type[Any]] = [
-                self.state_schema,
-                self.input_schema,
-                self.output_schema,
-            ]
-            if self.context_schema is not None:
-                schema_types.append(self.context_schema)
-            for node in self.nodes.values():
-                schema_types.append(node.input_schema)
-            for branches in self.branches.values():
-                for branch in branches.values():
-                    if branch.input_schema is not None:
-                        schema_types.append(branch.input_schema)
-            serde_allowlist = _serde.build_serde_allowlist(
-                schemas=schema_types,
-                channels=self.channels,
-            )
-            checkpointer = _serde.apply_checkpointer_allowlist(
-                checkpointer, serde_allowlist
-            )

        # assign default values
        interrupt_before = interrupt_before or []
@@ -1158,7 +1135,6 @@ class StateGraph(Generic[StateT, ContextT, InputT, OutputT]):
            cache=cache,
            name=name or "LangGraph",
        )
-        compiled._serde_allowlist = serde_allowlist

        compiled.attach_node(START, None)
        for key, node in self.nodes.items():
@@ -23,35 +23,6 @@ logger = logging.getLogger(__name__)
 SUPPORTS_EXC_NOTES = sys.version_info >= (3, 11)


-def _checkpoint_ns_for_parent_command(ns: str) -> str:
-    """Return the checkpoint namespace for the parent graph.
-
-    The checkpoint namespace is a `|`-separated path. Each segment is usually
-    of the form `name:task_id` (e.g. `parent_first:<uuid>|node:<uuid>`), but the
-    runtime may also insert a purely-numeric segment (e.g. `|1`) to disambiguate
-    concurrent tasks (e.g. `parent_first:<uuid>|1|node:<uuid>`).
-
-    Numeric segments are not real path levels, so we drop them before computing
-    the parent namespace.
-    """
-
-    parts = ns.split(NS_SEP)
-
-    # Drop any trailing numeric selectors for the current frame (e.g. `...|node:<id>|1`).
-    while parts and parts[-1].isdigit():
-        parts.pop()
-
-    # Drop the current frame segment itself (e.g. the `node:<id>`).
-    if parts:
-        parts.pop()
-
-    # Drop any trailing numeric selectors for the parent frame (e.g. `...|1|node:<id>`).
-    while parts and parts[-1].isdigit():
-        parts.pop()
-
-    return NS_SEP.join(parts)
-
-
 def run_with_retry(
    task: PregelExecutableTask,
    retry_policy: Sequence[RetryPolicy] | None,
@@ -79,8 +50,12 @@ def run_with_retry(
                    w.invoke(cmd, config)
                break
            elif cmd.graph == Command.PARENT:
-                # this command is for the parent graph, assign it to the parent.
-                exc.args = (replace(cmd, graph=_checkpoint_ns_for_parent_command(ns)),)
+                # this command is for the parent graph, assign it to the parent
+                parts = ns.split(NS_SEP)
+                if parts[-1].isdigit():
+                    parts.pop()
+                parent_ns = NS_SEP.join(parts[:-1])
+                exc.args = (replace(cmd, graph=parent_ns),)
            # bubble up
            raise
        except GraphBubbleUp:
@@ -171,8 +146,12 @@ async def arun_with_retry(
                    w.invoke(cmd, config)
                break
            elif cmd.graph == Command.PARENT:
-                # this command is for the parent graph, assign it to the parent.
-                exc.args = (replace(cmd, graph=_checkpoint_ns_for_parent_command(ns)),)
+                # this command is for the parent graph, assign it to the parent
+                parts = ns.split(NS_SEP)
+                if parts[-1].isdigit():
+                    parts.pop()
+                parent_ns = NS_SEP.join(parts[:-1])
+                exc.args = (replace(cmd, graph=parent_ns),)
            # bubble up
            raise
        except GraphBubbleUp:
@@ -48,7 +48,6 @@ from langgraph.store.base import BaseStore
 from pydantic import BaseModel, TypeAdapter
 from typing_extensions import Self, Unpack, deprecated, is_typeddict

-from langgraph._internal import _serde
 from langgraph._internal._config import (
    ensure_config,
    merge_configs,
@@ -699,17 +698,9 @@ class Pregel(
        self.config = config
        self.trigger_to_nodes = trigger_to_nodes or {}
        self.name = name
-        self._serde_allowlist: set[tuple[str, ...]] | None = None
        if auto_validate:
            self.validate()

-    def _apply_checkpointer_allowlist(
-        self, checkpointer: BaseCheckpointSaver | None
-    ) -> BaseCheckpointSaver | None:
-        if not _serde.STRICT_MSGPACK_ENABLED:
-            return checkpointer
-        return _serde.apply_checkpointer_allowlist(checkpointer, self._serde_allowlist)
-
    def get_graph(
        self, config: RunnableConfig | None = None, *, xray: int | bool = False
    ) -> Graph:
@@ -1248,8 +1239,6 @@ class Pregel(
        checkpointer: BaseCheckpointSaver | None = ensure_config(config)[CONF].get(
            CONFIG_KEY_CHECKPOINTER, self.checkpointer
        )
-        if isinstance(checkpointer, BaseCheckpointSaver):
-            checkpointer = self._apply_checkpointer_allowlist(checkpointer)
        if not checkpointer:
            raise ValueError("No checkpointer set")

@@ -1292,8 +1281,6 @@ class Pregel(
        checkpointer: BaseCheckpointSaver | None = ensure_config(config)[CONF].get(
            CONFIG_KEY_CHECKPOINTER, self.checkpointer
        )
-        if isinstance(checkpointer, BaseCheckpointSaver):
-            checkpointer = self._apply_checkpointer_allowlist(checkpointer)
        if not checkpointer:
            raise ValueError("No checkpointer set")

@@ -1342,8 +1329,6 @@ class Pregel(
        checkpointer: BaseCheckpointSaver | None = config[CONF].get(
            CONFIG_KEY_CHECKPOINTER, self.checkpointer
        )
-        if isinstance(checkpointer, BaseCheckpointSaver):
-            checkpointer = self._apply_checkpointer_allowlist(checkpointer)
        if not checkpointer:
            raise ValueError("No checkpointer set")

@@ -1395,8 +1380,6 @@ class Pregel(
        checkpointer: BaseCheckpointSaver | None = ensure_config(config)[CONF].get(
            CONFIG_KEY_CHECKPOINTER, self.checkpointer
        )
-        if isinstance(checkpointer, BaseCheckpointSaver):
-            checkpointer = self._apply_checkpointer_allowlist(checkpointer)
        if not checkpointer:
            raise ValueError("No checkpointer set")

@@ -1463,8 +1446,6 @@ class Pregel(
        checkpointer: BaseCheckpointSaver | None = ensure_config(config)[CONF].get(
            CONFIG_KEY_CHECKPOINTER, self.checkpointer
        )
-        if isinstance(checkpointer, BaseCheckpointSaver):
-            checkpointer = self._apply_checkpointer_allowlist(checkpointer)
        if not checkpointer:
            raise ValueError("No checkpointer set")

@@ -1909,8 +1890,6 @@ class Pregel(
        checkpointer: BaseCheckpointSaver | None = ensure_config(config)[CONF].get(
            CONFIG_KEY_CHECKPOINTER, self.checkpointer
        )
-        if isinstance(checkpointer, BaseCheckpointSaver):
-            checkpointer = self._apply_checkpointer_allowlist(checkpointer)
        if not checkpointer:
            raise ValueError("No checkpointer set")

@@ -2399,8 +2378,6 @@ class Pregel(
            raise RuntimeError("checkpointer=True cannot be used for root graphs.")
        else:
            checkpointer = self.checkpointer
-        if isinstance(checkpointer, BaseCheckpointSaver):
-            checkpointer = self._apply_checkpointer_allowlist(checkpointer)
        if checkpointer and not config.get(CONF):
            raise ValueError(
                "Checkpointer requires one or more of the following 'configurable' "
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"

 [project]
 name = "langgraph"
-version = "1.0.10rc1"
+version = "1.0.9"
 description = "Building stateful, multi-actor applications with LLMs"
 authors = []
 requires-python = ">=3.10"
@@ -1,4 +1,3 @@
-import os
 from contextlib import asynccontextmanager, contextmanager
 from uuid import uuid4

@@ -6,7 +5,6 @@ import pytest
 from langgraph.checkpoint.postgres import PostgresSaver
 from langgraph.checkpoint.postgres.aio import AsyncPostgresSaver
 from langgraph.checkpoint.serde.encrypted import EncryptedSerializer
-from langgraph.checkpoint.serde.jsonplus import JsonPlusSerializer
 from langgraph.checkpoint.sqlite import SqliteSaver
 from langgraph.checkpoint.sqlite.aio import AsyncSqliteSaver
 from psycopg import AsyncConnection, Connection
@@ -20,60 +18,30 @@ from tests.memory_assert import (  # noqa: E402
 )

 DEFAULT_POSTGRES_URI = "postgres://postgres:postgres@localhost:5442/"
-STRICT_MSGPACK = os.getenv("LANGGRAPH_STRICT_MSGPACK", "false").lower() in (
-    "1",
-    "true",
-    "yes",
-)
-
-
-def _strict_msgpack_serde() -> JsonPlusSerializer:
-    return JsonPlusSerializer(allowed_msgpack_modules=None)
-
-
-def _apply_strict_msgpack(checkpointer) -> None:
-    if not STRICT_MSGPACK:
-        return
-    serde = _strict_msgpack_serde()
-    if hasattr(checkpointer, "serde"):
-        checkpointer.serde = serde
-    if hasattr(checkpointer, "saver") and hasattr(checkpointer.saver, "serde"):
-        checkpointer.saver.serde = serde


@contextmanager
 def _checkpointer_memory():
-    if STRICT_MSGPACK:
-        yield MemorySaverAssertImmutable(serde=_strict_msgpack_serde())
-    else:
-        yield MemorySaverAssertImmutable()
+    yield MemorySaverAssertImmutable()


@contextmanager
 def _checkpointer_memory_migrate_sends():
-    checkpointer = MemorySaverNeedsPendingSendsMigration()
-    _apply_strict_msgpack(checkpointer)
-    yield checkpointer
+    yield MemorySaverNeedsPendingSendsMigration()


@contextmanager
 def _checkpointer_sqlite():
    with SqliteSaver.from_conn_string(":memory:") as checkpointer:
-        _apply_strict_msgpack(checkpointer)
        yield checkpointer


@contextmanager
 def _checkpointer_sqlite_aes():
    with SqliteSaver.from_conn_string(":memory:") as checkpointer:
-        if STRICT_MSGPACK:
-            checkpointer.serde = EncryptedSerializer.from_pycryptodome_aes(
-                serde=_strict_msgpack_serde(), key=b"1234567890123456"
-            )
-        else:
-            checkpointer.serde = EncryptedSerializer.from_pycryptodome_aes(
-                key=b"1234567890123456"
-            )
+        checkpointer.serde = EncryptedSerializer.from_pycryptodome_aes(
+            key=b"1234567890123456"
+        )
        yield checkpointer


@@ -89,7 +57,6 @@ def _checkpointer_postgres():
            DEFAULT_POSTGRES_URI + database
        ) as checkpointer:
            checkpointer.setup()
-            _apply_strict_msgpack(checkpointer)
            yield checkpointer
    finally:
        # drop unique db
@@ -112,7 +79,6 @@ def _checkpointer_postgres_pipe():
            # setup can't run inside pipeline because of implicit transaction
            with checkpointer.conn.pipeline() as pipe:
                checkpointer.pipe = pipe
-                _apply_strict_msgpack(checkpointer)
                yield checkpointer
    finally:
        # drop unique db
@@ -133,7 +99,6 @@ def _checkpointer_postgres_pool():
        ) as pool:
            checkpointer = PostgresSaver(pool)
            checkpointer.setup()
-            _apply_strict_msgpack(checkpointer)
            yield checkpointer
    finally:
        # drop unique db
@@ -144,7 +109,6 @@ def _checkpointer_postgres_pool():
@asynccontextmanager
 async def _checkpointer_sqlite_aio():
    async with AsyncSqliteSaver.from_conn_string(":memory:") as checkpointer:
-        _apply_strict_msgpack(checkpointer)
        yield checkpointer


@@ -162,7 +126,6 @@ async def _checkpointer_postgres_aio():
            DEFAULT_POSTGRES_URI + database
        ) as checkpointer:
            await checkpointer.setup()
-            _apply_strict_msgpack(checkpointer)
            yield checkpointer
    finally:
        # drop unique db
@@ -189,7 +152,6 @@ async def _checkpointer_postgres_aio_pipe():
            # setup can't run inside pipeline because of implicit transaction
            async with checkpointer.conn.pipeline() as pipe:
                checkpointer.pipe = pipe
-                _apply_strict_msgpack(checkpointer)
                yield checkpointer
    finally:
        # drop unique db
@@ -214,7 +176,6 @@ async def _checkpointer_postgres_aio_pool():
        ) as pool:
            checkpointer = AsyncPostgresSaver(pool)
            await checkpointer.setup()
-            _apply_strict_msgpack(checkpointer)
            yield checkpointer
    finally:
        # drop unique db
@@ -1,53 +0,0 @@
-from __future__ import annotations
-
-from typing_extensions import TypedDict
-
-from langgraph.graph import END, START, StateGraph
-from langgraph.types import Command
-
-
-def test_parent_command_from_nested_subgraph() -> None:
-    class ParentState(TypedDict):
-        jump_from_idx: int
-
-    class ChildState(TypedDict):
-        jump: bool
-
-    child_builder: StateGraph[ChildState] = StateGraph(ChildState)
-
-    def child_node(state: ChildState) -> Command | ChildState:
-        if state["jump"]:
-            return Command(graph=Command.PARENT, goto="parent_second")
-        return state
-
-    child_builder.add_node("node", child_node)
-    child_builder.add_edge(START, "node")
-
-    child_0 = child_builder.compile()
-    child_1 = child_builder.compile()
-
-    parent_builder: StateGraph[ParentState] = StateGraph(ParentState)
-
-    def parent_first(state: ParentState) -> ParentState:
-        child_0.invoke({"jump": state["jump_from_idx"] == 1})
-        if state["jump_from_idx"] == 1:
-            raise AssertionError("Shouldn't be here")
-
-        child_1.invoke({"jump": state["jump_from_idx"] == 2})
-        if state["jump_from_idx"] == 2:
-            raise AssertionError("Shouldn't be here")
-
-        return state
-
-    def parent_second(state: ParentState) -> ParentState:
-        return state
-
-    parent_builder.add_node("parent_first", parent_first)
-    parent_builder.add_node("parent_second", parent_second)
-    parent_builder.add_edge(START, "parent_first")
-    parent_builder.add_edge("parent_second", END)
-
-    graph = parent_builder.compile()
-
-    assert graph.invoke({"jump_from_idx": 1}) == {"jump_from_idx": 1}
-    assert graph.invoke({"jump_from_idx": 2}) == {"jump_from_idx": 2}
@@ -1,57 +0,0 @@
-from __future__ import annotations
-
-import pytest
-from langchain_core.runnables import RunnableConfig
-from typing_extensions import TypedDict
-
-from langgraph.graph import END, START, StateGraph
-from langgraph.types import Command
-
-pytestmark = pytest.mark.anyio
-
-
-async def test_parent_command_from_nested_subgraph() -> None:
-    class ParentState(TypedDict):
-        jump_from_idx: int
-
-    class ChildState(TypedDict):
-        jump: bool
-
-    child_builder: StateGraph[ChildState] = StateGraph(ChildState)
-
-    async def child_node(state: ChildState) -> Command | ChildState:
-        if state["jump"]:
-            return Command(graph=Command.PARENT, goto="parent_second")
-        return state
-
-    child_builder.add_node("node", child_node)
-    child_builder.add_edge(START, "node")
-
-    child_0 = child_builder.compile()
-    child_1 = child_builder.compile()
-
-    parent_builder: StateGraph[ParentState] = StateGraph(ParentState)
-
-    async def parent_first(state: ParentState, config: RunnableConfig) -> ParentState:
-        await child_0.ainvoke({"jump": state["jump_from_idx"] == 1}, config)
-        if state["jump_from_idx"] == 1:
-            raise AssertionError("Shouldn't be here")
-
-        await child_1.ainvoke({"jump": state["jump_from_idx"] == 2}, config)
-        if state["jump_from_idx"] == 2:
-            raise AssertionError("Shouldn't be here")
-
-        return state
-
-    async def parent_second(state: ParentState) -> ParentState:
-        return state
-
-    parent_builder.add_node("parent_first", parent_first)
-    parent_builder.add_node("parent_second", parent_second)
-    parent_builder.add_edge(START, "parent_first")
-    parent_builder.add_edge("parent_second", END)
-
-    graph = parent_builder.compile().with_config(recursion_limit=10)
-
-    assert await graph.ainvoke({"jump_from_idx": 1}) == {"jump_from_idx": 1}
-    assert await graph.ainvoke({"jump_from_idx": 2}) == {"jump_from_idx": 2}
@@ -8,7 +8,6 @@ import uuid
 from enum import Enum
 from typing import Annotated, Literal, Optional

-from langgraph.checkpoint.base import BaseCheckpointSaver
 from pydantic import (
    BaseModel,
    ByteSize,
@@ -24,10 +23,7 @@ from pydantic import (

 from langgraph._internal._pydantic import is_supported_by_pydantic
 from langgraph.constants import END, START
-from langgraph.func import entrypoint, task
 from langgraph.graph.state import StateGraph
-from langgraph.types import Command, Interrupt, interrupt
-from tests.any_str import AnyStr


 def test_is_supported_by_pydantic() -> None:
@@ -316,47 +312,3 @@ def test_pydantic_state_field_validator():
    g = builder.compile()
    res = g.invoke(input_state)
    assert res["text"] == "Hello, Validated John!"
-
-
-class FunctionalState(BaseModel):
-    a: str
-    b: str | None = None
-
-
-def test_interrupt_functional_pydantic(sync_checkpointer: BaseCheckpointSaver) -> None:
-    called_count = 0
-
-    @task
-    def foo(state: FunctionalState) -> FunctionalState:
-        nonlocal called_count
-        called_count += 1
-        return FunctionalState(**{"a": state.a + "foo"})
-
-    @task
-    def bar(state: FunctionalState) -> dict:
-        return {"a": state.a + "bar", "b": state.b}
-
-    @entrypoint(checkpointer=sync_checkpointer)
-    def graph(inputs: FunctionalState) -> FunctionalState:
-        fut_foo = foo(inputs)
-        value = interrupt("Provide value for bar:")
-        foo_res = fut_foo.result()
-        assert isinstance(foo_res, FunctionalState)
-        bar_input = FunctionalState(a=foo_res.a, b=value)
-        fut_bar = bar(bar_input)
-        return fut_bar.result()
-
-    config = {"configurable": {"thread_id": "1"}}
-    # First run, interrupted at bar
-    assert graph.invoke(FunctionalState(a=""), config) == {
-        "__interrupt__": [
-            Interrupt(
-                value="Provide value for bar:",
-                id=AnyStr(),
-            )
-        ]
-    }
-    # Resume with an answer
-    res = graph.invoke(Command(resume="bar"), config)
-    assert res == {"a": "foobar", "b": "bar"}
-    assert called_count == 1
@@ -4,7 +4,7 @@ import pytest
 from typing_extensions import TypedDict

 from langgraph.graph import START, StateGraph
-from langgraph.pregel._retry import _checkpoint_ns_for_parent_command, _should_retry_on
+from langgraph.pregel._retry import _should_retry_on
 from langgraph.types import RetryPolicy


@@ -78,22 +78,6 @@ def test_should_retry_on_empty_sequence():
    assert _should_retry_on(policy, ValueError("test error")) is False


-def test_checkpoint_ns_for_parent_command() -> None:
-    assert _checkpoint_ns_for_parent_command("") == ""
-    assert _checkpoint_ns_for_parent_command("node:1") == ""
-    assert _checkpoint_ns_for_parent_command("node:1|child:2") == "node:1"
-    assert _checkpoint_ns_for_parent_command("node:1|1|child:2") == "node:1"
-    assert _checkpoint_ns_for_parent_command("node:1|1|child:2|1") == "node:1"
-    assert (
-        _checkpoint_ns_for_parent_command("parent:1|1|child:1|1|node:1|1")
-        == "parent:1|1|child:1"
-    )
-    assert (
-        _checkpoint_ns_for_parent_command("parent:1|1|child:1|1|node:1")
-        == "parent:1|1|child:1"
-    )
-
-
 def test_should_retry_default_retry_on():
    """Test the default retry_on function."""
    import httpx
@@ -1,159 +0,0 @@
-from __future__ import annotations
-
-from collections import deque
-from dataclasses import dataclass
-from enum import Enum
-from typing import TYPE_CHECKING, Annotated, Any, Literal, NewType, Optional, Union
-
-import pytest
-from pydantic import BaseModel
-from typing_extensions import NotRequired, Required, TypedDict
-
-from langgraph._internal._serde import (
-    collect_allowlist_from_schemas,
-    curated_core_allowlist,
-)
-
-
-class Color(Enum):
-    RED = "red"
-    BLUE = "blue"
-
-
-@dataclass
-class InnerDataclass:
-    value: int
-
-
-class InnerModel(BaseModel):
-    name: str
-
-
-@dataclass
-class Node:
-    value: int
-    child: Node | None = None
-
-
-if TYPE_CHECKING:
-
-    class MissingType:
-        pass
-
-
-@dataclass
-class MissingRefDataclass:
-    payload: MissingType
-
-
-class Payload(TypedDict):
-    item: InnerDataclass
-    maybe: NotRequired[InnerModel]
-    required: Required[str]
-
-
-@dataclass
-class NestedDataclass:
-    inner: InnerDataclass
-    items: list[InnerModel]
-    mapping: dict[str, InnerDataclass]
-    optional: InnerModel | None
-    union: InnerDataclass | InnerModel
-    queue: deque[InnerDataclass]
-    frozen: frozenset[InnerModel]
-
-
-AnnotatedList = Annotated[list[InnerDataclass], "meta"]
-UserId = NewType("UserId", int)
-
-
-class DummyChannel:
-    @property
-    def ValueType(self) -> type[InnerDataclass]:
-        return InnerDataclass
-
-    @property
-    def UpdateType(self) -> type[InnerModel]:
-        return InnerModel
-
-
-def test_curated_core_allowlist_includes_messages() -> None:
-    try:
-        from langchain_core.messages import BaseMessage
-    except Exception:
-        pytest.skip("langchain_core not available")
-    allowlist = curated_core_allowlist()
-    assert (BaseMessage.__module__, BaseMessage.__name__) in allowlist
-
-
-def test_collect_allowlist_basic_models() -> None:
-    allowlist = collect_allowlist_from_schemas(
-        schemas=[InnerDataclass, InnerModel, Color]
-    )
-    assert (InnerDataclass.__module__, InnerDataclass.__name__) in allowlist
-    assert (InnerModel.__module__, InnerModel.__name__) in allowlist
-    assert (Color.__module__, Color.__name__) in allowlist
-
-
-def test_collect_allowlist_nested_containers() -> None:
-    allowlist = collect_allowlist_from_schemas(schemas=[NestedDataclass])
-    assert (NestedDataclass.__module__, NestedDataclass.__name__) in allowlist
-    assert (InnerDataclass.__module__, InnerDataclass.__name__) in allowlist
-    assert (InnerModel.__module__, InnerModel.__name__) in allowlist
-
-
-def test_collect_allowlist_annotated_and_union() -> None:
-    allowlist = collect_allowlist_from_schemas(
-        schemas=[AnnotatedList, InnerModel | None, InnerDataclass | None]
-    )
-    assert (InnerDataclass.__module__, InnerDataclass.__name__) in allowlist
-    assert (InnerModel.__module__, InnerModel.__name__) in allowlist
-
-
-def test_collect_allowlist_literal_and_any() -> None:
-    allowlist = collect_allowlist_from_schemas(schemas=[Any, Literal["a"]])
-    assert allowlist == set()
-
-
-def test_collect_allowlist_typeddict_fields_only() -> None:
-    allowlist = collect_allowlist_from_schemas(schemas=[Payload])
-    assert (InnerDataclass.__module__, InnerDataclass.__name__) in allowlist
-    assert (InnerModel.__module__, InnerModel.__name__) in allowlist
-    assert (Payload.__module__, Payload.__name__) not in allowlist
-
-
-def test_collect_allowlist_forward_refs() -> None:
-    allowlist = collect_allowlist_from_schemas(schemas=[Node])
-    assert (Node.__module__, Node.__name__) in allowlist
-
-
-def test_collect_allowlist_missing_forward_ref() -> None:
-    allowlist = collect_allowlist_from_schemas(schemas=[MissingRefDataclass])
-    assert allowlist == {(MissingRefDataclass.__module__, MissingRefDataclass.__name__)}
-
-
-def test_collect_allowlist_newtype_supertype() -> None:
-    allowlist = collect_allowlist_from_schemas(schemas=[UserId])
-    assert allowlist == set()
-
-
-def test_collect_allowlist_channels() -> None:
-    channels = {"a": DummyChannel(), "b": DummyChannel()}
-    allowlist = collect_allowlist_from_schemas(channels=channels)
-    assert (InnerDataclass.__module__, InnerDataclass.__name__) in allowlist
-    assert (InnerModel.__module__, InnerModel.__name__) in allowlist
-
-
-def test_collect_allowlist_pep604_union() -> None:
-    schema = InnerDataclass | InnerModel
-    allowlist = collect_allowlist_from_schemas(schemas=[schema])
-    assert (InnerDataclass.__module__, InnerDataclass.__name__) in allowlist
-    assert (InnerModel.__module__, InnerModel.__name__) in allowlist
-
-
-def test_collect_allowlist_typing_union_optional() -> None:
-    typing_optional = Optional[InnerDataclass]  # noqa: UP045
-    typing_union = Union[InnerDataclass, InnerModel]  # noqa: UP007
-    allowlist = collect_allowlist_from_schemas(schemas=[typing_optional, typing_union])
-    assert (InnerDataclass.__module__, InnerDataclass.__name__) in allowlist
-    assert (InnerModel.__module__, InnerModel.__name__) in allowlist
@@ -1,641 +0,0 @@
-"""Tests for subgraph persistence behavior (sync).
-
-Covers three checkpointer settings for subgraph state:
- checkpointer=False: no persistence, even when parent has a checkpointer
- checkpointer=None (default): "stateless" — inherits parent checkpointer for
-  interrupt support, but state resets each invocation. This is the common case
-  when an agent is invoked from inside a tool used by another agent.
- checkpointer=True: "stateful" — state accumulates across invocations on the same thread id
-"""
-
-from uuid import uuid4
-
-from langchain_core.messages import AIMessage, HumanMessage
-from langgraph.checkpoint.base import BaseCheckpointSaver
-from typing_extensions import TypedDict
-
-from langgraph.graph import START, StateGraph
-from langgraph.graph.message import MessagesState
-from langgraph.types import Command, Interrupt, interrupt
-from tests.any_str import AnyStr
-
-
-class ParentState(TypedDict):
-    result: str
-
-
-# -- checkpointer=None (stateless) --
-
-
-def test_stateless_interrupt_resume(
-    sync_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a subgraph compiled with checkpointer=None (the default) can
-    still support interrupt/resume when invoked from inside a parent graph that
-    has a checkpointer. This is the "stateless" pattern — the subgraph inherits
-    the parent's checkpointer just enough to pause and resume, but does not
-    retain any state across separate parent invocations. This pattern commonly
-    appears when an agent is invoked from inside a tool used by another agent.
-    """
-
-    # Build a subgraph that interrupts before echoing.
-    # Two nodes: "process" interrupts then echoes, "respond" returns "Done".
-    def process(state: MessagesState) -> dict:
-        interrupt("continue?")
-        return {
-            "messages": [AIMessage(content=f"Processing: {state['messages'][-1].text}")]
-        }
-
-    def respond(state: MessagesState) -> dict:
-        return {"messages": [AIMessage(content="Done")]}
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("process", process)
-        .add_node("respond", respond)
-        .add_edge(START, "process")
-        .add_edge("process", "respond")
-        .compile()
-    )
-
-    def call_inner(state: ParentState) -> dict:
-        resp = inner.invoke({"messages": [HumanMessage(content="apples")]})
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=sync_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    # First invoke hits the interrupt
-    result = parent.invoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-
-    # Resume completes the subgraph
-    result = parent.invoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-
-
-def test_stateless_state_resets(
-    sync_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a subgraph compiled with checkpointer=None (the default) does
-    not retain any message history between separate parent invocations. Each time
-    the parent graph invokes the subgraph, it starts with a clean slate. This
-    confirms the "stateless" behavior: even though the parent has a checkpointer,
-    the subgraph state is not persisted across calls.
-    """
-
-    # Build a simple echo subgraph: echoes "Processing: <input>"
-    def echo(state: MessagesState) -> dict:
-        return {
-            "messages": [AIMessage(content=f"Processing: {state['messages'][-1].text}")]
-        }
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("echo", echo)
-        .add_edge(START, "echo")
-        .compile()
-    )
-
-    subgraph_messages: list[list[str]] = []
-    call_count = 0
-
-    def call_inner(state: ParentState) -> dict:
-        nonlocal call_count
-        call_count += 1
-        topic = "apples" if call_count == 1 else "bananas"
-        resp = inner.invoke(
-            {"messages": [HumanMessage(content=f"tell me about {topic}")]}
-        )
-        subgraph_messages.append([m.text for m in resp["messages"]])
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=sync_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    result1 = parent.invoke({"result": ""}, config)
-    assert result1 == {"result": "Processing: tell me about apples"}
-
-    result2 = parent.invoke({"result": ""}, config)
-    assert result2 == {"result": "Processing: tell me about bananas"}
-
-    # Both invocations produce fresh history — no memory of prior call
-    assert subgraph_messages[0] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-    ]
-    assert subgraph_messages[1] == [
-        "tell me about bananas",
-        "Processing: tell me about bananas",
-    ]
-
-
-def test_stateless_state_resets_with_interrupt(
-    sync_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a subgraph compiled with checkpointer=None resets its state
-    between parent invocations even when interrupt/resume is used. The subgraph
-    is invoked twice from the parent, each time with an interrupt that must be
-    resumed. After both invoke+resume cycles, each subgraph run should only
-    contain its own messages — no bleed-over from the previous run.
-    """
-
-    # Build a subgraph that interrupts before echoing, then responds "Done"
-    def process(state: MessagesState) -> dict:
-        interrupt("continue?")
-        return {
-            "messages": [AIMessage(content=f"Processing: {state['messages'][-1].text}")]
-        }
-
-    def respond(state: MessagesState) -> dict:
-        return {"messages": [AIMessage(content="Done")]}
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("process", process)
-        .add_node("respond", respond)
-        .add_edge(START, "process")
-        .add_edge("process", "respond")
-        .compile()
-    )
-
-    subgraph_messages: list[list[str]] = []
-    call_count = 0
-
-    def call_inner(state: ParentState) -> dict:
-        nonlocal call_count
-        call_count += 1
-        topic = "apples" if call_count == 1 else "bananas"
-        resp = inner.invoke(
-            {"messages": [HumanMessage(content=f"tell me about {topic}")]}
-        )
-        subgraph_messages.append([m.text for m in resp["messages"]])
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=sync_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    # First invoke+resume cycle
-    result = parent.invoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-    result = parent.invoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-
-    # Second invoke+resume cycle
-    result = parent.invoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-    result = parent.invoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-
-    # Both invocations produce fresh history — no memory of prior call
-    assert subgraph_messages[0] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-        "Done",
-    ]
-    assert subgraph_messages[1] == [
-        "tell me about bananas",
-        "Processing: tell me about bananas",
-        "Done",
-    ]
-
-
-# -- checkpointer=False --
-
-
-def test_checkpointer_false_no_persistence(
-    sync_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a subgraph compiled with checkpointer=False gets no
-    persistence at all, even when the parent graph has a checkpointer. Unlike
-    the default (checkpointer=None) which inherits just enough from the parent
-    to support interrupt/resume, checkpointer=False explicitly opts out of all
-    checkpoint behavior. Each invocation starts completely fresh.
-    """
-
-    # Build a simple echo subgraph with checkpointer=False
-    def echo(state: MessagesState) -> dict:
-        return {
-            "messages": [AIMessage(content=f"Processed: {state['messages'][-1].text}")]
-        }
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("echo", echo)
-        .add_edge(START, "echo")
-        .compile(checkpointer=False)
-    )
-
-    subgraph_messages: list[list[str]] = []
-    call_count = 0
-
-    def call_inner(state: ParentState) -> dict:
-        nonlocal call_count
-        call_count += 1
-        topic = "apples" if call_count == 1 else "bananas"
-        resp = inner.invoke(
-            {"messages": [HumanMessage(content=f"tell me about {topic}")]}
-        )
-        subgraph_messages.append([m.text for m in resp["messages"]])
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=sync_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    result1 = parent.invoke({"result": ""}, config)
-    assert result1 == {"result": "Processed: tell me about apples"}
-
-    result2 = parent.invoke({"result": ""}, config)
-    assert result2 == {"result": "Processed: tell me about bananas"}
-
-    # Both start fresh — no history from first call
-    assert subgraph_messages[0] == [
-        "tell me about apples",
-        "Processed: tell me about apples",
-    ]
-    assert subgraph_messages[1] == [
-        "tell me about bananas",
-        "Processed: tell me about bananas",
-    ]
-
-
-# -- checkpointer=True (stateful) --
-
-
-def test_stateful_state_accumulates(
-    sync_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a subgraph compiled with checkpointer=True ("stateful")
-    retains its message history across separate parent invocations. To enable
-    this, the subgraph is wrapped in an outer graph compiled with
-    checkpointer=True — this wrapper gives the inner subgraph its own persistent
-    checkpoint namespace. After two parent calls, the second subgraph invocation
-    should see messages from both the first and second calls.
-    """
-
-    # Build a simple echo subgraph
-    def echo(state: MessagesState) -> dict:
-        return {
-            "messages": [AIMessage(content=f"Processing: {state['messages'][-1].text}")]
-        }
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("echo", echo)
-        .add_edge(START, "echo")
-        .compile()
-    )
-
-    # Wrap the inner subgraph with checkpointer=True to enable stateful.
-    # The wrapper graph gives the subgraph its own persistent checkpoint
-    # namespace, keyed by the node name ("agent").
-    wrapper = (
-        StateGraph(MessagesState)
-        .add_node("agent", inner)
-        .add_edge(START, "agent")
-        .compile(checkpointer=True)
-    )
-
-    subgraph_messages: list[list[str]] = []
-    topics = ["apples", "bananas"]
-
-    def call_inner(state: ParentState) -> dict:
-        topic = topics[len(subgraph_messages)]
-        resp = wrapper.invoke(
-            {"messages": [HumanMessage(content=f"tell me about {topic}")]}
-        )
-        subgraph_messages.append([m.text for m in resp["messages"]])
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=sync_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    result1 = parent.invoke({"result": ""}, config)
-    assert result1 == {"result": "Processing: tell me about apples"}
-
-    result2 = parent.invoke({"result": ""}, config)
-    assert result2 == {"result": "Processing: tell me about bananas"}
-
-    # First call: fresh history
-    assert subgraph_messages[0] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-    ]
-    # Second call: retains messages from first call
-    assert subgraph_messages[1] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-        "tell me about bananas",
-        "Processing: tell me about bananas",
-    ]
-
-
-def test_stateful_state_accumulates_with_interrupt(
-    sync_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a stateful subgraph (checkpointer=True) retains its
-    message history across parent invocations even when interrupt/resume is
-    involved. The subgraph interrupts before echoing, then responds "Done".
-    After two invoke+resume cycles, the second run should contain the full
-    accumulated history from both calls.
-    """
-
-    # Build a subgraph that interrupts before echoing, then responds "Done"
-    def process(state: MessagesState) -> dict:
-        interrupt("continue?")
-        return {
-            "messages": [AIMessage(content=f"Processing: {state['messages'][-1].text}")]
-        }
-
-    def respond(state: MessagesState) -> dict:
-        return {"messages": [AIMessage(content="Done")]}
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("process", process)
-        .add_node("respond", respond)
-        .add_edge(START, "process")
-        .add_edge("process", "respond")
-        .compile()
-    )
-
-    # Wrap with checkpointer=True for stateful
-    wrapper = (
-        StateGraph(MessagesState)
-        .add_node("agent", inner)
-        .add_edge(START, "agent")
-        .compile(checkpointer=True)
-    )
-
-    subgraph_messages: list[list[str]] = []
-    topics = ["apples", "bananas"]
-
-    def call_inner(state: ParentState) -> dict:
-        topic = topics[len(subgraph_messages)]
-        resp = wrapper.invoke(
-            {"messages": [HumanMessage(content=f"tell me about {topic}")]}
-        )
-        subgraph_messages.append([m.text for m in resp["messages"]])
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=sync_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    # First invoke+resume cycle
-    result = parent.invoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-    result = parent.invoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-
-    # Second invoke+resume cycle
-    result = parent.invoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-    result = parent.invoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-
-    # First call: fresh history
-    assert subgraph_messages[0] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-        "Done",
-    ]
-    # Second call: retains messages from first call
-    assert subgraph_messages[1] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-        "Done",
-        "tell me about bananas",
-        "Processing: tell me about bananas",
-        "Done",
-    ]
-
-
-def test_stateful_interrupt_resume(
-    sync_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a stateful subgraph (checkpointer=True) correctly
-    supports interrupt/resume while also accumulating state. Each invoke+resume
-    pair triggers the subgraph, and after the second pair completes we verify
-    both the per-step invoke outputs and the accumulated message history. This
-    exercises the full lifecycle: interrupt, resume, state accumulation.
-    """
-
-    # Build a subgraph that interrupts before echoing, then responds "Done"
-    def process(state: MessagesState) -> dict:
-        interrupt("continue?")
-        return {
-            "messages": [AIMessage(content=f"Processing: {state['messages'][-1].text}")]
-        }
-
-    def respond(state: MessagesState) -> dict:
-        return {"messages": [AIMessage(content="Done")]}
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("process", process)
-        .add_node("respond", respond)
-        .add_edge(START, "process")
-        .add_edge("process", "respond")
-        .compile()
-    )
-
-    # Wrap with checkpointer=True for stateful
-    wrapper = (
-        StateGraph(MessagesState)
-        .add_node("agent", inner)
-        .add_edge(START, "agent")
-        .compile(checkpointer=True)
-    )
-
-    subgraph_messages: list[list[str]] = []
-    topics = ["apples", "bananas"]
-
-    def call_inner(state: ParentState) -> dict:
-        topic = topics[len(subgraph_messages)]
-        resp = wrapper.invoke(
-            {"messages": [HumanMessage(content=f"tell me about {topic}")]}
-        )
-        subgraph_messages.append([m.text for m in resp["messages"]])
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=sync_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    # First invocation: hits interrupt
-    result = parent.invoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-
-    # Resume: completes first call
-    result = parent.invoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-    assert subgraph_messages[0] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-        "Done",
-    ]
-
-    # Second invocation: hits interrupt, state accumulated from first call
-    result = parent.invoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-
-    # Resume: completes second call with accumulated state
-    result = parent.invoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-    assert subgraph_messages[1] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-        "Done",
-        "tell me about bananas",
-        "Processing: tell me about bananas",
-        "Done",
-    ]
-
-
-def test_stateful_namespace_isolation(
-    sync_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that two different stateful subgraphs (checkpointer=True)
-    maintain completely independent state when they use different wrapper node
-    names. A "fruit_agent" and "veggie_agent" are each wrapped in their own
-    stateful graph. After two parent invocations, each agent should only
-    see its own accumulated history with no cross-contamination between them.
-    """
-
-    # Build two simple echo subgraphs with different prefixes
-    def fruit_echo(state: MessagesState) -> dict:
-        return {"messages": [AIMessage(content=f"Fruit: {state['messages'][-1].text}")]}
-
-    def veggie_echo(state: MessagesState) -> dict:
-        return {
-            "messages": [AIMessage(content=f"Veggie: {state['messages'][-1].text}")]
-        }
-
-    fruit_inner = (
-        StateGraph(MessagesState)
-        .add_node("echo", fruit_echo)
-        .add_edge(START, "echo")
-        .compile()
-    )
-    veggie_inner = (
-        StateGraph(MessagesState)
-        .add_node("echo", veggie_echo)
-        .add_edge(START, "echo")
-        .compile()
-    )
-
-    # Wrap each with checkpointer=True, using different node names to get
-    # independent checkpoint namespaces
-    fruit = (
-        StateGraph(MessagesState)
-        .add_node("fruit_agent", fruit_inner)
-        .add_edge(START, "fruit_agent")
-        .compile(checkpointer=True)
-    )
-    veggie = (
-        StateGraph(MessagesState)
-        .add_node("veggie_agent", veggie_inner)
-        .add_edge(START, "veggie_agent")
-        .compile(checkpointer=True)
-    )
-
-    fruit_msgs: list[list[str]] = []
-    veggie_msgs: list[list[str]] = []
-    call_count = 0
-
-    def call_both(state: ParentState) -> dict:
-        nonlocal call_count
-        call_count += 1
-        suffix = "round 1" if call_count == 1 else "round 2"
-        f = fruit.invoke({"messages": [HumanMessage(content=f"cherries {suffix}")]})
-        v = veggie.invoke({"messages": [HumanMessage(content=f"broccoli {suffix}")]})
-        fruit_msgs.append([m.text for m in f["messages"]])
-        veggie_msgs.append([m.text for m in v["messages"]])
-        return {"result": f["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_both", call_both)
-        .add_edge(START, "call_both")
-        .compile(checkpointer=sync_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    result1 = parent.invoke({"result": ""}, config)
-    assert result1 == {"result": "Fruit: cherries round 1"}
-
-    result2 = parent.invoke({"result": ""}, config)
-    assert result2 == {"result": "Fruit: cherries round 2"}
-
-    # First call: each agent sees only its own history
-    assert fruit_msgs[0] == ["cherries round 1", "Fruit: cherries round 1"]
-    assert veggie_msgs[0] == ["broccoli round 1", "Veggie: broccoli round 1"]
-
-    # Second call: each accumulated independently — no cross-contamination
-    assert fruit_msgs[1] == [
-        "cherries round 1",
-        "Fruit: cherries round 1",
-        "cherries round 2",
-        "Fruit: cherries round 2",
-    ]
-    assert veggie_msgs[1] == [
-        "broccoli round 1",
-        "Veggie: broccoli round 1",
-        "broccoli round 2",
-        "Veggie: broccoli round 2",
-    ]
@@ -1,662 +0,0 @@
-"""Tests for subgraph persistence behavior (async).
-
-Covers three checkpointer settings for subgraph state:
- checkpointer=False: no persistence, even when parent has a checkpointer
- checkpointer=None (default): "stateless" — inherits parent checkpointer for
-  interrupt support, but state resets each invocation. This is the common case
-  when an agent is invoked from inside a tool used by another agent.
- checkpointer=True: "stateful" — state accumulates across invocations on the same thread id
-"""
-
-import sys
-from uuid import uuid4
-
-import pytest
-from langchain_core.messages import AIMessage, HumanMessage
-from langgraph.checkpoint.base import BaseCheckpointSaver
-from typing_extensions import TypedDict
-
-from langgraph.graph import START, StateGraph
-from langgraph.graph.message import MessagesState
-from langgraph.types import Command, Interrupt, interrupt
-from tests.any_str import AnyStr
-
-pytestmark = pytest.mark.anyio
-
-NEEDS_CONTEXTVARS = pytest.mark.skipif(
-    sys.version_info < (3, 11),
-    reason="Python 3.11+ is required for async contextvars support",
-)
-
-
-class ParentState(TypedDict):
-    result: str
-
-
-# -- checkpointer=None (stateless) --
-
-
-@NEEDS_CONTEXTVARS
-async def test_stateless_interrupt_resume_async(
-    async_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a subgraph compiled with checkpointer=None (the default) can
-    still support interrupt/resume when invoked from inside a parent graph that
-    has a checkpointer. This is the "stateless" pattern — the subgraph inherits
-    the parent's checkpointer just enough to pause and resume, but does not
-    retain any state across separate parent invocations. This pattern commonly
-    appears when an agent is invoked from inside a tool used by another agent.
-    """
-
-    # Build a subgraph that interrupts before echoing.
-    # Two nodes: "process" interrupts then echoes, "respond" returns "Done".
-    def process(state: MessagesState) -> dict:
-        interrupt("continue?")
-        return {
-            "messages": [AIMessage(content=f"Processing: {state['messages'][-1].text}")]
-        }
-
-    def respond(state: MessagesState) -> dict:
-        return {"messages": [AIMessage(content="Done")]}
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("process", process)
-        .add_node("respond", respond)
-        .add_edge(START, "process")
-        .add_edge("process", "respond")
-        .compile()
-    )
-
-    async def call_inner(state: ParentState) -> dict:
-        resp = await inner.ainvoke({"messages": [HumanMessage(content="apples")]})
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=async_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    # First invoke hits the interrupt
-    result = await parent.ainvoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-
-    # Resume completes the subgraph
-    result = await parent.ainvoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-
-
-@NEEDS_CONTEXTVARS
-async def test_stateless_state_resets_async(
-    async_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a subgraph compiled with checkpointer=None (the default) does
-    not retain any message history between separate parent invocations. Each time
-    the parent graph invokes the subgraph, it starts with a clean slate. This
-    confirms the "stateless" behavior: even though the parent has a checkpointer,
-    the subgraph state is not persisted across calls.
-    """
-
-    # Build a simple echo subgraph: echoes "Processing: <input>"
-    def echo(state: MessagesState) -> dict:
-        return {
-            "messages": [AIMessage(content=f"Processing: {state['messages'][-1].text}")]
-        }
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("echo", echo)
-        .add_edge(START, "echo")
-        .compile()
-    )
-
-    subgraph_messages: list[list[str]] = []
-    call_count = 0
-
-    async def call_inner(state: ParentState) -> dict:
-        nonlocal call_count
-        call_count += 1
-        topic = "apples" if call_count == 1 else "bananas"
-        resp = await inner.ainvoke(
-            {"messages": [HumanMessage(content=f"tell me about {topic}")]}
-        )
-        subgraph_messages.append([m.text for m in resp["messages"]])
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=async_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    result1 = await parent.ainvoke({"result": ""}, config)
-    assert result1 == {"result": "Processing: tell me about apples"}
-
-    result2 = await parent.ainvoke({"result": ""}, config)
-    assert result2 == {"result": "Processing: tell me about bananas"}
-
-    # Both invocations produce fresh history — no memory of prior call
-    assert subgraph_messages[0] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-    ]
-    assert subgraph_messages[1] == [
-        "tell me about bananas",
-        "Processing: tell me about bananas",
-    ]
-
-
-@NEEDS_CONTEXTVARS
-async def test_stateless_state_resets_with_interrupt_async(
-    async_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a subgraph compiled with checkpointer=None resets its state
-    between parent invocations even when interrupt/resume is used. The subgraph
-    is invoked twice from the parent, each time with an interrupt that must be
-    resumed. After both invoke+resume cycles, each subgraph run should only
-    contain its own messages — no bleed-over from the previous run.
-    """
-
-    # Build a subgraph that interrupts before echoing, then responds "Done"
-    def process(state: MessagesState) -> dict:
-        interrupt("continue?")
-        return {
-            "messages": [AIMessage(content=f"Processing: {state['messages'][-1].text}")]
-        }
-
-    def respond(state: MessagesState) -> dict:
-        return {"messages": [AIMessage(content="Done")]}
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("process", process)
-        .add_node("respond", respond)
-        .add_edge(START, "process")
-        .add_edge("process", "respond")
-        .compile()
-    )
-
-    subgraph_messages: list[list[str]] = []
-    call_count = 0
-
-    async def call_inner(state: ParentState) -> dict:
-        nonlocal call_count
-        call_count += 1
-        topic = "apples" if call_count == 1 else "bananas"
-        resp = await inner.ainvoke(
-            {"messages": [HumanMessage(content=f"tell me about {topic}")]}
-        )
-        subgraph_messages.append([m.text for m in resp["messages"]])
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=async_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    # First invoke+resume cycle
-    result = await parent.ainvoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-    result = await parent.ainvoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-
-    # Second invoke+resume cycle
-    result = await parent.ainvoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-    result = await parent.ainvoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-
-    # Both invocations produce fresh history — no memory of prior call
-    assert subgraph_messages[0] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-        "Done",
-    ]
-    assert subgraph_messages[1] == [
-        "tell me about bananas",
-        "Processing: tell me about bananas",
-        "Done",
-    ]
-
-
-# -- checkpointer=False --
-
-
-@NEEDS_CONTEXTVARS
-async def test_checkpointer_false_no_persistence_async(
-    async_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a subgraph compiled with checkpointer=False gets no
-    persistence at all, even when the parent graph has a checkpointer. Unlike
-    the default (checkpointer=None) which inherits just enough from the parent
-    to support interrupt/resume, checkpointer=False explicitly opts out of all
-    checkpoint behavior. Each invocation starts completely fresh.
-    """
-
-    # Build a simple echo subgraph with checkpointer=False
-    def echo(state: MessagesState) -> dict:
-        return {
-            "messages": [AIMessage(content=f"Processed: {state['messages'][-1].text}")]
-        }
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("echo", echo)
-        .add_edge(START, "echo")
-        .compile(checkpointer=False)
-    )
-
-    subgraph_messages: list[list[str]] = []
-    call_count = 0
-
-    async def call_inner(state: ParentState) -> dict:
-        nonlocal call_count
-        call_count += 1
-        topic = "apples" if call_count == 1 else "bananas"
-        resp = await inner.ainvoke(
-            {"messages": [HumanMessage(content=f"tell me about {topic}")]}
-        )
-        subgraph_messages.append([m.text for m in resp["messages"]])
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=async_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    result1 = await parent.ainvoke({"result": ""}, config)
-    assert result1 == {"result": "Processed: tell me about apples"}
-
-    result2 = await parent.ainvoke({"result": ""}, config)
-    assert result2 == {"result": "Processed: tell me about bananas"}
-
-    # Both start fresh — no history from first call
-    assert subgraph_messages[0] == [
-        "tell me about apples",
-        "Processed: tell me about apples",
-    ]
-    assert subgraph_messages[1] == [
-        "tell me about bananas",
-        "Processed: tell me about bananas",
-    ]
-
-
-# -- checkpointer=True (stateful) --
-
-
-@NEEDS_CONTEXTVARS
-async def test_stateful_state_accumulates_async(
-    async_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a subgraph compiled with checkpointer=True ("stateful")
-    retains its message history across separate parent invocations. To enable
-    this, the subgraph is wrapped in an outer graph compiled with
-    checkpointer=True — this wrapper gives the inner subgraph its own persistent
-    checkpoint namespace. After two parent calls, the second subgraph invocation
-    should see messages from both the first and second calls.
-    """
-
-    # Build a simple echo subgraph
-    def echo(state: MessagesState) -> dict:
-        return {
-            "messages": [AIMessage(content=f"Processing: {state['messages'][-1].text}")]
-        }
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("echo", echo)
-        .add_edge(START, "echo")
-        .compile()
-    )
-
-    # Wrap the inner subgraph with checkpointer=True to enable stateful.
-    # The wrapper graph gives the subgraph its own persistent checkpoint
-    # namespace, keyed by the node name ("agent").
-    wrapper = (
-        StateGraph(MessagesState)
-        .add_node("agent", inner)
-        .add_edge(START, "agent")
-        .compile(checkpointer=True)
-    )
-
-    subgraph_messages: list[list[str]] = []
-    topics = ["apples", "bananas"]
-
-    async def call_inner(state: ParentState) -> dict:
-        topic = topics[len(subgraph_messages)]
-        resp = await wrapper.ainvoke(
-            {"messages": [HumanMessage(content=f"tell me about {topic}")]}
-        )
-        subgraph_messages.append([m.text for m in resp["messages"]])
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=async_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    result1 = await parent.ainvoke({"result": ""}, config)
-    assert result1 == {"result": "Processing: tell me about apples"}
-
-    result2 = await parent.ainvoke({"result": ""}, config)
-    assert result2 == {"result": "Processing: tell me about bananas"}
-
-    # First call: fresh history
-    assert subgraph_messages[0] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-    ]
-    # Second call: retains messages from first call
-    assert subgraph_messages[1] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-        "tell me about bananas",
-        "Processing: tell me about bananas",
-    ]
-
-
-@NEEDS_CONTEXTVARS
-async def test_stateful_state_accumulates_with_interrupt_async(
-    async_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a stateful subgraph (checkpointer=True) retains its
-    message history across parent invocations even when interrupt/resume is
-    involved. The subgraph interrupts before echoing, then responds "Done".
-    After two invoke+resume cycles, the second run should contain the full
-    accumulated history from both calls.
-    """
-
-    # Build a subgraph that interrupts before echoing, then responds "Done"
-    def process(state: MessagesState) -> dict:
-        interrupt("continue?")
-        return {
-            "messages": [AIMessage(content=f"Processing: {state['messages'][-1].text}")]
-        }
-
-    def respond(state: MessagesState) -> dict:
-        return {"messages": [AIMessage(content="Done")]}
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("process", process)
-        .add_node("respond", respond)
-        .add_edge(START, "process")
-        .add_edge("process", "respond")
-        .compile()
-    )
-
-    # Wrap with checkpointer=True for stateful
-    wrapper = (
-        StateGraph(MessagesState)
-        .add_node("agent", inner)
-        .add_edge(START, "agent")
-        .compile(checkpointer=True)
-    )
-
-    subgraph_messages: list[list[str]] = []
-    topics = ["apples", "bananas"]
-
-    async def call_inner(state: ParentState) -> dict:
-        topic = topics[len(subgraph_messages)]
-        resp = await wrapper.ainvoke(
-            {"messages": [HumanMessage(content=f"tell me about {topic}")]}
-        )
-        subgraph_messages.append([m.text for m in resp["messages"]])
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=async_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    # First invoke+resume cycle
-    result = await parent.ainvoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-    result = await parent.ainvoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-
-    # Second invoke+resume cycle
-    result = await parent.ainvoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-    result = await parent.ainvoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-
-    # First call: fresh history
-    assert subgraph_messages[0] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-        "Done",
-    ]
-    # Second call: retains messages from first call
-    assert subgraph_messages[1] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-        "Done",
-        "tell me about bananas",
-        "Processing: tell me about bananas",
-        "Done",
-    ]
-
-
-@NEEDS_CONTEXTVARS
-async def test_stateful_interrupt_resume_async(
-    async_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that a stateful subgraph (checkpointer=True) correctly
-    supports interrupt/resume while also accumulating state. Each invoke+resume
-    pair triggers the subgraph, and after the second pair completes we verify
-    both the per-step invoke outputs and the accumulated message history. This
-    exercises the full lifecycle: interrupt, resume, state accumulation.
-    """
-
-    # Build a subgraph that interrupts before echoing, then responds "Done"
-    def process(state: MessagesState) -> dict:
-        interrupt("continue?")
-        return {
-            "messages": [AIMessage(content=f"Processing: {state['messages'][-1].text}")]
-        }
-
-    def respond(state: MessagesState) -> dict:
-        return {"messages": [AIMessage(content="Done")]}
-
-    inner = (
-        StateGraph(MessagesState)
-        .add_node("process", process)
-        .add_node("respond", respond)
-        .add_edge(START, "process")
-        .add_edge("process", "respond")
-        .compile()
-    )
-
-    # Wrap with checkpointer=True for stateful
-    wrapper = (
-        StateGraph(MessagesState)
-        .add_node("agent", inner)
-        .add_edge(START, "agent")
-        .compile(checkpointer=True)
-    )
-
-    subgraph_messages: list[list[str]] = []
-    topics = ["apples", "bananas"]
-
-    async def call_inner(state: ParentState) -> dict:
-        topic = topics[len(subgraph_messages)]
-        resp = await wrapper.ainvoke(
-            {"messages": [HumanMessage(content=f"tell me about {topic}")]}
-        )
-        subgraph_messages.append([m.text for m in resp["messages"]])
-        return {"result": resp["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_inner", call_inner)
-        .add_edge(START, "call_inner")
-        .compile(checkpointer=async_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    # First invocation: hits interrupt
-    result = await parent.ainvoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-
-    # Resume: completes first call
-    result = await parent.ainvoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-    assert subgraph_messages[0] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-        "Done",
-    ]
-
-    # Second invocation: hits interrupt, state accumulated from first call
-    result = await parent.ainvoke({"result": ""}, config)
-    assert result == {
-        "result": "",
-        "__interrupt__": [Interrupt(value="continue?", id=AnyStr())],
-    }
-
-    # Resume: completes second call with accumulated state
-    result = await parent.ainvoke(Command(resume=True), config)
-    assert result == {"result": "Done"}
-    assert subgraph_messages[1] == [
-        "tell me about apples",
-        "Processing: tell me about apples",
-        "Done",
-        "tell me about bananas",
-        "Processing: tell me about bananas",
-        "Done",
-    ]
-
-
-@NEEDS_CONTEXTVARS
-async def test_stateful_namespace_isolation_async(
-    async_checkpointer: BaseCheckpointSaver,
-) -> None:
-    """Tests that two different stateful subgraphs (checkpointer=True)
-    maintain completely independent state when they use different wrapper node
-    names. A "fruit_agent" and "veggie_agent" are each wrapped in their own
-    stateful graph. After two parent invocations, each agent should only
-    see its own accumulated history with no cross-contamination between them.
-    """
-
-    # Build two simple echo subgraphs with different prefixes
-    def fruit_echo(state: MessagesState) -> dict:
-        return {"messages": [AIMessage(content=f"Fruit: {state['messages'][-1].text}")]}
-
-    def veggie_echo(state: MessagesState) -> dict:
-        return {
-            "messages": [AIMessage(content=f"Veggie: {state['messages'][-1].text}")]
-        }
-
-    fruit_inner = (
-        StateGraph(MessagesState)
-        .add_node("echo", fruit_echo)
-        .add_edge(START, "echo")
-        .compile()
-    )
-    veggie_inner = (
-        StateGraph(MessagesState)
-        .add_node("echo", veggie_echo)
-        .add_edge(START, "echo")
-        .compile()
-    )
-
-    # Wrap each with checkpointer=True, using different node names to get
-    # independent checkpoint namespaces
-    fruit = (
-        StateGraph(MessagesState)
-        .add_node("fruit_agent", fruit_inner)
-        .add_edge(START, "fruit_agent")
-        .compile(checkpointer=True)
-    )
-    veggie = (
-        StateGraph(MessagesState)
-        .add_node("veggie_agent", veggie_inner)
-        .add_edge(START, "veggie_agent")
-        .compile(checkpointer=True)
-    )
-
-    fruit_msgs: list[list[str]] = []
-    veggie_msgs: list[list[str]] = []
-    call_count = 0
-
-    async def call_both(state: ParentState) -> dict:
-        nonlocal call_count
-        call_count += 1
-        suffix = "round 1" if call_count == 1 else "round 2"
-        f = await fruit.ainvoke(
-            {"messages": [HumanMessage(content=f"cherries {suffix}")]}
-        )
-        v = await veggie.ainvoke(
-            {"messages": [HumanMessage(content=f"broccoli {suffix}")]}
-        )
-        fruit_msgs.append([m.text for m in f["messages"]])
-        veggie_msgs.append([m.text for m in v["messages"]])
-        return {"result": f["messages"][-1].text}
-
-    parent = (
-        StateGraph(ParentState)
-        .add_node("call_both", call_both)
-        .add_edge(START, "call_both")
-        .compile(checkpointer=async_checkpointer)
-    )
-    config = {"configurable": {"thread_id": str(uuid4())}}
-
-    result1 = await parent.ainvoke({"result": ""}, config)
-    assert result1 == {"result": "Fruit: cherries round 1"}
-
-    result2 = await parent.ainvoke({"result": ""}, config)
-    assert result2 == {"result": "Fruit: cherries round 2"}
-
-    # First call: each agent sees only its own history
-    assert fruit_msgs[0] == ["cherries round 1", "Fruit: cherries round 1"]
-    assert veggie_msgs[0] == ["broccoli round 1", "Veggie: broccoli round 1"]
-
-    # Second call: each accumulated independently — no cross-contamination
-    assert fruit_msgs[1] == [
-        "cherries round 1",
-        "Fruit: cherries round 1",
-        "cherries round 2",
-        "Fruit: cherries round 2",
-    ]
-    assert veggie_msgs[1] == [
-        "broccoli round 1",
-        "Veggie: broccoli round 1",
-        "broccoli round 2",
-        "Veggie: broccoli round 2",
-    ]
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 [[package]]
 name = "langgraph"
-version = "1.0.10rc1"
+version = "1.0.9"
 source = { editable = "." }
 dependencies = [
    { name = "langchain-core" },
@@ -1548,7 +1548,7 @@ wheels = [

 [[package]]
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-version = "4.0.1rc3"
+version = "4.0.0"
 source = { editable = "../checkpoint" }
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    { name = "pytest-asyncio" },
    { name = "pytest-mock" },
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 ]

 [[package]]
@@ -268,7 +268,7 @@ wheels = [

 [[package]]
 name = "langgraph"
-version = "1.0.10rc1"
+version = "1.0.9"
 source = { editable = "../langgraph" }
 dependencies = [
    { name = "langchain-core" },
@@ -352,7 +352,7 @@ test = [

 [[package]]
 name = "langgraph-checkpoint"
-version = "4.0.1rc3"
+version = "4.0.0"
 source = { editable = "../checkpoint" }
 dependencies = [
    { name = "langchain-core" },
@@ -373,7 +373,6 @@ dev = [
    { name = "numpy" },
    { name = "pandas" },
    { name = "pandas-stubs", specifier = ">=2.2.2.240807" },
-    { name = "pycryptodome", specifier = ">=3.23.0" },
    { name = "pytest" },
    { name = "pytest-asyncio" },
    { name = "pytest-mock" },
@@ -46,48 +46,36 @@ class Auth:

        my_auth = Auth()

-        @my_auth.authenticate
-        async def authenticate(authorization: str) -> Auth.types.MinimalUserDict:
-            user = await verify_token(authorization)  # Your token verification logic
-            if not user:
+        async def verify_token(token: str) -> str:
+            # Verify token and return user_id
+            # This would typically be a call to your auth server
+            return "user_id"
+
+        @auth.authenticate
+        async def authenticate(authorization: str) -> str:
+            # Verify token and return user_id
+            result = await verify_token(authorization)
+            if result != "user_id":
                raise Auth.exceptions.HTTPException(
                    status_code=401, detail="Unauthorized"
                )
-            return {
-                "identity": user["id"],
-                "permissions": user.get("permissions", []),
-            }
+            return result

-        # Default deny: reject all requests that don't have a specific handler
-        @my_auth.on
-        async def deny_all(ctx: Auth.types.AuthContext, value: Any) -> False:
-            return False
+        # Global fallback handler
+        @auth.on
+        async def authorize_default(params: Auth.on.value):
+            return False # Reject all requests (default behavior)

-        # Allow users to create threads with their own identity as owner
-        @my_auth.on.threads.create
-        async def allow_thread_create(
-            ctx: Auth.types.AuthContext, value: Auth.types.on.threads.create.value
-        ):
-            metadata = value.setdefault("metadata", {})
-            metadata["owner"] = ctx.user.identity
+        @auth.on.threads.create
+        async def authorize_thread_create(params: Auth.on.threads.create.value):
+            # Allow the allowed user to create a thread
+            assert params.get("metadata", {}).get("owner") == "allowed_user"

-        # Allow users to read and search their own threads
-        @my_auth.on.threads.read
-        async def allow_thread_read(
-            ctx: Auth.types.AuthContext, value: Auth.types.on.threads.read.value
-        ) -> Auth.types.FilterType:
-            return {"owner": ctx.user.identity}
-
-        @my_auth.on.threads.search
-        async def allow_thread_search(
-            ctx: Auth.types.AuthContext, value: Auth.types.on.threads.search.value
-        ) -> Auth.types.FilterType:
-            return {"owner": ctx.user.identity}
-
-        # Scope all store operations to the user's namespace
-        @my_auth.on.store
-        async def scope_store(ctx: Auth.types.AuthContext, value: Auth.types.on.store.value):
+        @auth.on.store
+        async def authorize_store(ctx: Auth.types.AuthContext, value: Auth.types.on.store.value):
+            # Automatically scope all store operations to the user's namespace.
            namespace = tuple(value["namespace"]) if value.get("namespace") else ()
+            assert isinstance(namespace, tuple)
            if not namespace or namespace[0] != ctx.user.identity:
                namespace = (ctx.user.identity, *namespace)
            value["namespace"] = namespace
@@ -149,31 +137,30 @@ class Auth:
        
        ???+ example "Examples"

-            Start by denying all requests by default, then add specific handlers
-            to allow access:
+            Global handler for all requests:

            ```python
-            # Default deny: reject all unhandled requests
            @auth.on
-            async def deny_all(ctx: AuthContext, value: Any) -> False:
+            async def reject_unhandled_requests(ctx: AuthContext, value: Any) -> None:
+                print(f"Request to {ctx.path} by {ctx.user.identity}")
                return False
            ```

-            Resource-specific handler. This takes precedence over the global handler
+            Resource-specific handler. This would take precedence over the global handler
            for all actions on the `threads` resource:
-
+            
            ```python
            @auth.on.threads
-            async def allow_thread_access(ctx: AuthContext, value: Any) -> Auth.types.FilterType:
-                # Only allow access to threads owned by the user
-                return {"owner": ctx.user.identity}
+            async def check_thread_access(ctx: AuthContext, value: Any) -> bool:
+                # Allow access only to threads created by the user
+                return value.get("created_by") == ctx.user.identity
            ```

            Resource and action specific handler:

            ```python
            @auth.on.threads.delete
-            async def allow_admin_thread_deletion(ctx: AuthContext, value: Any) -> bool:
+            async def prevent_thread_deletion(ctx: AuthContext, value: Any) -> bool:
                # Only admins can delete threads
                return "admin" in ctx.user.permissions
            ```
@@ -181,10 +168,10 @@ class Auth:
            Multiple resources or actions:

            ```python
-            @auth.on(resources=["threads", "assistants"], actions=["read", "search"])
-            async def allow_reads(ctx: AuthContext, value: Any) -> Auth.types.FilterType:
-                # Allow read/search access to resources owned by the user
-                return {"owner": ctx.user.identity}
+            @auth.on(resources=["threads", "runs"], actions=["create", "update"])
+            async def rate_limit_writes(ctx: AuthContext, value: Any) -> bool:
+                # Implement rate limiting for write operations
+                return await check_rate_limit(ctx.user.identity)
            ```

            Auth for the `store` resource is a bit different since its structure is developer defined.
@@ -193,9 +180,10 @@ class Auth:

            ```python
            @auth.on.store
-            async def scope_store(ctx: AuthContext, value: Auth.types.on.store.value):
-                # Allow store access but scope to user's namespace
+            async def authorize_store(ctx: AuthContext, value: Auth.types.on.store.value):
+                # Automatically scope all store operations to the user's namespace.
                namespace = tuple(value["namespace"]) if value.get("namespace") else ()
+                assert isinstance(namespace, tuple)
                if not namespace or namespace[0] != ctx.user.identity:
                    namespace = (ctx.user.identity, *namespace)
                value["namespace"] = namespace
@@ -205,14 +193,14 @@ class Auth:

            ```python
            @auth.on.store.put
-            async def allow_put(ctx: AuthContext, value: Auth.types.on.store.put.value):
-                # Allow puts, scoped to user's namespace
-                value["namespace"] = (ctx.user.identity, *value["namespace"])
+            async def on_put(ctx: AuthContext, value: Auth.types.on.store.put.value):
+                # value has typed fields: namespace, key, value, index
+                ...

            @auth.on.store.get
-            async def allow_get(ctx: AuthContext, value: Auth.types.on.store.get.value):
-                # Allow gets, scoped to user's namespace
-                value["namespace"] = (ctx.user.identity, *value["namespace"])
+            async def on_get(ctx: AuthContext, value: Auth.types.on.store.get.value):
+                # value has typed fields: namespace, key
+                ...
            ```
        """
        # These are accessed by the API. Changes to their names or types is
@@ -545,56 +533,44 @@ class _StoreOn:
        """Register a handler for store put operations.

        ???+ example "Example"
-            If using `@auth.on` to deny by default, register this handler to allow
-            put operations (scoped to the user's namespace):
-
            ```python
            @auth.on.store.put
-            async def allow_store_put(ctx: Auth.types.AuthContext, value: Auth.types.on.store.put.value):
-                # Allow puts, scoped to user's namespace
-                value["namespace"] = (ctx.user.identity, *value["namespace"])
+            async def on_store_put(ctx: Auth.types.AuthContext, value: Auth.types.on.store.put.value):
+                # Scope puts to user's namespace
+                ...
            ```
        """
        self.get = _StoreActionOn(auth, "get", types.StoreGet)
        """Register a handler for store get operations.

        ???+ example "Example"
-            If using `@auth.on` to deny by default, register this handler to allow
-            get operations (scoped to the user's namespace):
-
            ```python
            @auth.on.store.get
-            async def allow_store_get(ctx: Auth.types.AuthContext, value: Auth.types.on.store.get.value):
-                # Allow gets, scoped to user's namespace
-                value["namespace"] = (ctx.user.identity, *value["namespace"])
+            async def on_store_get(ctx: Auth.types.AuthContext, value: Auth.types.on.store.get.value):
+                # Scope gets to user's namespace
+                ...
            ```
        """
        self.search = _StoreActionOn(auth, "search", types.StoreSearch)
        """Register a handler for store search operations.

        ???+ example "Example"
-            If using `@auth.on` to deny by default, register this handler to allow
-            search operations (scoped to the user's namespace):
-
            ```python
            @auth.on.store.search
-            async def allow_store_search(ctx: Auth.types.AuthContext, value: Auth.types.on.store.search.value):
-                # Allow searches, scoped to user's namespace
-                value["namespace"] = (ctx.user.identity, *value["namespace"])
+            async def on_store_search(ctx: Auth.types.AuthContext, value: Auth.types.on.store.search.value):
+                # Scope searches to user's namespace
+                ...
            ```
        """
        self.delete = _StoreActionOn(auth, "delete", types.StoreDelete)
        """Register a handler for store delete operations.

        ???+ example "Example"
-            If using `@auth.on` to deny by default, register this handler to allow
-            delete operations (scoped to the user's namespace):
-
            ```python
            @auth.on.store.delete
-            async def allow_store_delete(ctx: Auth.types.AuthContext, value: Auth.types.on.store.delete.value):
-                # Allow deletes, scoped to user's namespace
-                value["namespace"] = (ctx.user.identity, *value["namespace"])
+            async def on_store_delete(ctx: Auth.types.AuthContext, value: Auth.types.on.store.delete.value):
+                # Scope deletes to user's namespace
+                ...
            ```
        """
        self.list_namespaces = _StoreActionOn(
@@ -603,14 +579,11 @@ class _StoreOn:
        """Register a handler for store list_namespaces operations.

        ???+ example "Example"
-            If using `@auth.on` to deny by default, register this handler to allow
-            namespace listing (scoped to the user's prefix):
-
            ```python
            @auth.on.store.list_namespaces
-            async def allow_list_ns(ctx: Auth.types.AuthContext, value: Auth.types.on.store.list_namespaces.value):
-                # Allow listing, scoped to user's namespace prefix
-                value["namespace"] = (ctx.user.identity,)
+            async def on_list_ns(ctx: Auth.types.AuthContext, value: Auth.types.on.store.list_namespaces.value):
+                # Scope namespace listing to user's prefix
+                ...
            ```
        """

@@ -699,42 +672,40 @@ class _On:

    ???+ example "Examples"

-        Start by denying all requests by default with a global handler,
-        then add specific handlers to allow access:
+        Global handler for all requests:

        ```python
-        # Default deny: reject all requests without a specific handler
        @auth.on
-        async def deny_all(ctx: AuthContext, value: Any) -> False:
-            return False
+        async def log_all_requests(ctx: AuthContext, value: Any) -> None:
+            print(f"Request to {ctx.path} by {ctx.user.identity}")
+            return True
        ```

-        Resource-specific handler to allow access (takes precedence
-        over the global deny handler):
+        Resource-specific handler:

        ```python
        @auth.on.threads
-        async def allow_thread_access(ctx: AuthContext, value: Any) -> Auth.types.FilterType:
-            # Allow access only to threads owned by the user
-            return {"owner": ctx.user.identity}
+        async def check_thread_access(ctx: AuthContext, value: Any) -> bool:
+            # Allow access only to threads created by the user
+            return value.get("created_by") == ctx.user.identity
        ```

        Resource and action specific handler:

        ```python
-        @auth.on.threads.create
-        async def allow_thread_create(ctx: AuthContext, value: Any) -> None:
-            # Allow thread creation, stamping the owner
-            value.setdefault("metadata", {})["owner"] = ctx.user.identity
+        @auth.on.threads.delete
+        async def prevent_thread_deletion(ctx: AuthContext, value: Any) -> bool:
+            # Only admins can delete threads
+            return "admin" in ctx.user.permissions
        ```

        Multiple resources or actions:

        ```python
-        @auth.on(resources=["threads", "assistants"], actions=["read", "search"])
-        async def allow_reads(ctx: AuthContext, value: Any) -> Auth.types.FilterType:
-            # Allow read/search, scoped to user's resources
-            return {"owner": ctx.user.identity}
+        @auth.on(resources=["threads", "runs"], actions=["create", "update"])
+        async def rate_limit_writes(ctx: AuthContext, value: Any) -> bool:
+            # Implement rate limiting for write operations
+            return await check_rate_limit(ctx.user.identity)
        ```
    """

@@ -233,20 +233,13 @@ class StudioUser:

    ???+ example "Examples"

-        Use `@auth.on` to deny by default, but allow Studio users through:
-
        ```python
        @auth.on
-        async def deny_all_except_studio(ctx: Auth.types.AuthContext, value: Any) -> bool:
-            # Allow Studio users, deny everyone else by default
+        async def allow_developers(ctx: Auth.types.AuthContext, value: Any) -> None:
            if isinstance(ctx.user, Auth.types.StudioUser):
-                return True
+                return None
+            ...
            return False
-
-        # Then add specific handlers to allow access for non-Studio users
-        @auth.on.threads
-        async def allow_thread_access(ctx: Auth.types.AuthContext, value: Any) -> Auth.types.FilterType:
-            return {"owner": ctx.user.identity}
        ```
    """

@@ -980,27 +973,24 @@ class on:
    and search operations across different resources (threads, assistants, crons).

    ???+ note "Usage"
-        Start by denying all requests by default, then add handlers to allow access:
-
        ```python
        from langgraph_sdk import Auth

        auth = Auth()

-        # Default deny: reject all requests without a specific handler
        @auth.on
-        async def deny_all(ctx: Auth.types.AuthContext, value: Auth.on.value):
-            return False
+        def handle_all(params: Auth.on.value):
+            raise Exception("Not authorized")

-        # Allow thread creation, stamping the owner
        @auth.on.threads.create
-        async def allow_thread_create(ctx: Auth.types.AuthContext, value: Auth.on.threads.create.value):
-            value.setdefault("metadata", {})["owner"] = ctx.user.identity
+        def handle_thread_create(params: Auth.on.threads.create.value):
+            # Handle thread creation
+            pass

-        # Allow assistant search, scoped to user's resources
        @auth.on.assistants.search
-        async def allow_assistant_search(ctx: Auth.types.AuthContext, value: Auth.on.assistants.search.value):
-            return {"owner": ctx.user.identity}
+        def handle_assistant_search(params: Auth.on.assistants.search.value):
+            # Handle assistant search
+            pass
        ```
    """

@@ -265,7 +265,7 @@ wheels = [

 [[package]]
 name = "langgraph"
-version = "1.0.10rc1"
+version = "1.0.9"
 source = { editable = "../langgraph" }
 dependencies = [
    { name = "langchain-core" },
@@ -349,7 +349,7 @@ test = [

 [[package]]
 name = "langgraph-checkpoint"
-version = "4.0.1rc3"
+version = "4.0.0"
 source = { editable = "../checkpoint" }
 dependencies = [
    { name = "langchain-core" },
@@ -370,7 +370,6 @@ dev = [
    { name = "numpy" },
    { name = "pandas" },
    { name = "pandas-stubs", specifier = ">=2.2.2.240807" },
-    { name = "pycryptodome", specifier = ">=3.23.0" },
    { name = "pytest" },
    { name = "pytest-asyncio" },
    { name = "pytest-mock" },