LangGraph

Changes since 1.2.1

• chore(langgraph): bump version to 1.2.2 (#7914)
• fix(langgraph): assign stable IDs to id=None BaseMessages before DeltaChannel checkpoint writes (#7913)
• release(checkpoint): 4.1.1 (#7890)

Changes since checkpoint==4.1.0

• release(checkpoint): 4.1.1 (#7890)
• fix(checkpoint): restrict lc:2 envelope revival to default constructor (#7892)
• chore(deps): bump idna from 3.11 to 3.15 in /libs/checkpoint (#7860)
• chore(deps): bump langsmith from 0.7.31 to 0.8.0 in /libs/checkpoint (#7784)

Changes since sdk==0.3.14

• release(checkpoint): 4.1.1 (#7890)
• release(sdk-py): 0.3.15 (#7891)
• fix(sdk-py): percent-encode caller-supplied identifiers in URL paths (#7893)
• release(langgraph): 1.2.1 (#7883)
• chore(deps): bump idna from 3.11 to 3.15 in /libs/sdk-py (#7863)
• chore(deps): bump urllib3 from 2.6.3 to 2.7.0 in /libs/sdk-py (#7764)
• chore(deps): bump langsmith from 0.7.31 to 0.8.0 in /libs/sdk-py (#7789)
• release: bump alpha packages to official versions (#7775)
• chore(langgraph): bump langchain-core to 1.4.0 (#7767)
• feat(sdk-py): support metadata filter for crons search/count (#7737)
• chore(deps): bump ty from 0.0.23 to 0.0.33 in /libs/sdk-py (#7666)

Changes since 1.2.0

• release(langgraph): 1.2.1 (#7883)
• feat(langgraph): add before_builtins opt-in for stream transformers (#7882)
• chore(deps): bump idna from 3.11 to 3.15 in /libs/langgraph (#7866)
• fix(langgraph): keep tool results out of v3 messages (#7838)
• chore(deps): bump langsmith from 0.7.31 to 0.8.0 in /libs/langgraph (#7788)

Changes since 1.2.0a7

• release: bump alpha packages to official versions (#7775)
• feat(langgraph): durable error-handler resume across host crashes (#7773)
• feat(langgraph): add set_node_defaults() to StateGraph (#7747)
• chore(deps): bump urllib3 from 2.6.3 to 2.7.0 in /libs/langgraph (#7766)
• chore(deps): bump mistune from 3.2.0 to 3.2.1 in /libs/langgraph (#7733)
• chore(langgraph): bump langchain-core to 1.4.0 (#7767)
• feat(checkpoint): force delta channel snapshot after max supersteps since last snapshot (#7746)
• test(langgraph): de-flake heartbeat progress test (#7735)
• chore(langgraph): re-implement exit mode for delta channel (#7730)
• chore(deps): bump ty from 0.0.23 to 0.0.33 in /libs/sdk-py (#7666)
• docs(checkpoint): mark DeltaChannel and delta-history APIs as beta (#7732)
• chore(deps): bump jupyter-server from 2.17.0 to 2.18.0 in /libs/langgraph (#7713)
• feat(checkpoint-sqlite): override get_delta_channel_history with streaming walk (#7702)
• chore: "chore: minor clean up around checkpoint and delta channel" (#7706)
• chore: minor clean up around checkpoint and delta channel (#7705)

Changes since checkpointpostgres==3.1.0a4

• release: bump alpha packages to official versions (#7775)
• chore(deps): bump urllib3 from 2.6.3 to 2.7.0 in /libs/checkpoint-postgres (#7761)
• chore(deps): bump langchain-core from 1.3.2 to 1.3.3 in /libs/checkpoint-postgres (#7754)
• fix(checkpoint-postgres): add column aliases to seed-blob branch of delta stage-2 UNION ALL (#7728)

Changes since prebuilt==1.1.0a2

• release: bump alpha packages to official versions (#7775)
• chore(deps): bump urllib3 from 2.6.3 to 2.7.0 in /libs/prebuilt (#7763)
• chore(langgraph): bump langchain-core to 1.4.0 (#7767)
• chore(deps): bump ty from 0.0.23 to 0.0.33 in /libs/sdk-py (#7666)
• feat(checkpoint-sqlite): override get_delta_channel_history with streaming walk (#7702)
• chore(deps-dev): bump the minor-and-patch group across 1 directory with 3 updates (#7698)
• release: alpha bump (a4) for langgraph, checkpoint, checkpoint-postgres (#7701)
• release: alpha bump langgraph 1.2.0a6 (#7697)

Changes since checkpointsqlite==3.1.0a1

• release: bump alpha packages to official versions (#7775)
• chore(deps): bump urllib3 from 2.6.3 to 2.7.0 in /libs/checkpoint-sqlite (#7760)
• chore(deps): bump langchain-core from 1.2.28 to 1.3.3 in /libs/checkpoint-sqlite (#7751)
• chore: remove keepset helper (#7745)
• chore(langgraph): add guide/conformance for delta channel checkpointer (#7736)

Changes since checkpoint==4.1.0a4

• release: bump alpha packages to official versions (#7775)
• chore(deps): bump urllib3 from 2.6.3 to 2.7.0 in /libs/checkpoint (#7762)
• chore(deps): bump langchain-core from 1.3.2 to 1.3.3 in /libs/checkpoint (#7752)
• feat(checkpoint): force delta channel snapshot after max supersteps since last snapshot (#7746)
• fix(checkpoint): specify allowed_objects in Reviver (#7743)
• chore: remove keepset helper (#7745)
• chore(langgraph): add guide/conformance for delta channel checkpointer (#7736)
• docs(checkpoint): mark DeltaChannel and delta-history APIs as beta (#7732)
• chore(deps): bump the minor-and-patch group across 1 directory with 3 updates (#7670)
• chore: "chore: minor clean up around checkpoint and delta channel" (#7706)
• chore: minor clean up around checkpoint and delta channel (#7705)

Changes since cli==0.4.25

• release(cli): 0.4.26 (#7772)
• fix(cli): add support for prerelease api_versions (#7771)
• chore(deps): bump the uv group across 2 directories with 1 update (#7749)
• chore(deps): bump urllib3 from 2.6.3 to 2.7.0 in /libs/cli (#7765)
• chore(deps): bump langchain-core from 1.3.0 to 1.3.3 in /libs/cli (#7753)

Changes since cli==0.4.24

• release: bump cli version (#7734)
• feat(cli): support studio deploy (#7394)
• chore(deps): bump the minor-and-patch group in /libs/cli with 4 updates (#7674)
• chore(deps): bump the minor-and-patch group in /libs/cli/js-examples with 8 updates (#7673)
• chore(deps): bump the minor-and-patch group in /libs/cli/js-monorepo-example with 7 updates (#7671)
• chore: update x links to langchain_oss (#7645)

Changes since checkpointsqlite==3.0.3

• feat(checkpoint-sqlite): override get_delta_channel_history with streaming walk (#7702)
• release: alpha bump (a4) for langgraph, checkpoint, checkpoint-postgres (#7701)
• feat: public get_writes_history saver API + delta cadence rework (#7699)
• chore(deps): bump the minor-and-patch group in /libs/checkpoint-sqlite with 2 updates (#7668)
• release: alpha bump (a3) for langgraph, checkpoint, checkpoint-postgres (#7678)
• release: alpha for timers (#7647)
• chore: update x links to langchain_oss (#7645)
• release(checkpoint): 4.0.3 (#7625)
• chore(deps): bump langsmith from 0.6.4 to 0.7.31 in /libs/checkpoint-sqlite (#7524)
• release(checkpoint): 4.0.2 (#7518)
• docs: document LANGGRAPH_STRICT_MSGPACK for checkpoint security (#7517)
• chore(deps): bump pytest from 9.0.2 to 9.0.3 in /libs/checkpoint-sqlite (#7502)
• chore(deps): bump langchain-core from 1.2.22 to 1.2.28 in /libs/checkpoint-sqlite (#7451)
• chore(deps): bump the minor-and-patch group in /libs/checkpoint-sqlite with 3 updates (#7374)
• chore(deps): bump pygments from 2.19.2 to 2.20.0 in /libs/checkpoint-sqlite (#7350)
• chore(deps): bump langchain-core from 1.2.11 to 1.2.22 in /libs/checkpoint-sqlite (#7318)
• chore(deps): bump requests from 2.32.5 to 2.33.0 in /libs/checkpoint-sqlite (#7279)
• chore(deps): bump the all-dependencies group in /libs/checkpoint-sqlite with 2 updates (#7248)
• chore(deps): bump ruff from 0.15.5 to 0.15.6 in /libs/checkpoint-sqlite in the all-dependencies group (#7191)
• chore(deps): bump orjson from 3.11.5 to 3.11.6 in /libs/checkpoint-sqlite (#7144)
• chore(deps): bump the all-dependencies group across 1 directory with 2 updates (#7070)
• release(checkpoint): 0.4.1 (#6966)
• chore: add serde events (#6954)
• chore: update defaults (#6953)
• release: rc2 (#6949)
• release: Candidate (#6947)
• Merge commit from fork
• chore(deps-dev): bump ruff from 0.15.1 to 0.15.2 in /libs/checkpoint-sqlite in the all-dependencies group (#6913)
• chore: add make type target for type checking (#6748)
• chore(deps): bump ruff from 0.14.13 to 0.15.1 in /libs/checkpoint-sqlite in the all-dependencies group (#6807)
• chore(deps): bump langchain-core from 1.2.7 to 1.2.11 in /libs/checkpoint-sqlite (#6828)

Changes since sdk==0.3.13

• release(sdk-py): 0.3.14 (#7712)
• feat(sdk-py): add return_minimal to threads update (#7704)
• release: alpha bump (a4) for langgraph, checkpoint, checkpoint-postgres (#7701)
• release: alpha bump langgraph 1.2.0a6 (#7697)
• release: alpha bump prebuilt 1.1.0a2, langgraph 1.2.0a5 (#7682)
• release: alpha bump prebuilt 1.1.0a1, langgraph 1.2.0a4 (#7679)
• feat(langgraph): dispatch stream_events(version='v3') on Pregel (#7677)
• release: alpha bump (a3) for langgraph, checkpoint, checkpoint-postgres (#7678)
• release: alpha for timers (#7647)
• chore: update x links to langchain_oss (#7645)
• feat(langgraph): add streaming transformer infrastructure and tests (#7519)
• chore(deps): bump the minor-and-patch group across 1 directory with 4 updates (ty held back) (#7635)
• release(prebuilt): 1.0.12, langgraph 1.1.10 (#7623)
• release(checkpoint): 4.0.3 (#7625)
• release(prebuilt): 1.0.11 (#7610)
• feat(prebuilt): allow ToolNode tools to return list[Command | ToolMessage] (#7596)
• chore(langgraph): bump version 1.1.8 -> 1.1.9 (#7563)
• release(langgraph): 1.1.8 (#7545)
• release(prebuilt): 1.0.10 (#7541)
• release(langgraph): 1.1.7 (#7540)
• chore(deps): bump langsmith from 0.7.20 to 0.7.31 in /libs/sdk-py (#7528)
• release(checkpoint): 4.0.2 (#7518)
• chore(deps-dev): bump pytest from 9.0.2 to 9.0.3 in /libs/sdk-py (#7504)
• release(langgraph): 1.1.7a2 (#7511)
• chore: allow passing some metadata only for tracing purposes (#7383)
• release(langgraph): 1.1.7a1 (#7476)
• chore(deps): bump langchain-core from 1.2.22 to 1.2.28 in /libs/sdk-py (#7449)

Changes since checkpointpostgres==3.1.0a3

• release: alpha bump (a4) for langgraph, checkpoint, checkpoint-postgres (#7701)
• feat: public get_writes_history saver API + delta cadence rework (#7699)
• chore(deps): bump the minor-and-patch group in /libs/checkpoint-postgres with 2 updates (#7665)

Changes since 1.2.0a6

• release: alpha bump (a4) for langgraph, checkpoint, checkpoint-postgres (#7701)
• feat: public get_writes_history saver API + delta cadence rework (#7699)

Changes since checkpoint==4.1.0a3

• release: alpha bump (a4) for langgraph, checkpoint, checkpoint-postgres (#7701)
• feat: public get_writes_history saver API + delta cadence rework (#7699)

Changes since 1.2.0a5

• release: alpha bump langgraph 1.2.0a6 (#7697)
• feat(langgraph): forward kwargs through stream_events(version="v3") (#7696)
• chore(deps): bump the minor-and-patch group across 1 directory with 6 updates (#7675)
• chore(deps): bump notebook from 7.5.2 to 7.5.6 in /libs/langgraph (#7657)

Changes since 1.2.0a4

• release: alpha bump prebuilt 1.1.0a2, langgraph 1.2.0a5 (#7682)
• fix(langgraph): coerce dict/str writes in _messages_delta_reducer (#7680)

Changes since prebuilt==1.1.0a1

• release: alpha bump prebuilt 1.1.0a2, langgraph 1.2.0a5 (#7682)
• fix(prebuilt): scope ToolCallTransformer projection to its own namespace (#7681)

Changes since 1.2.0a3

• release: alpha bump prebuilt 1.1.0a1, langgraph 1.2.0a4 (#7679)