LangGraph

Changes since 1.2.5 release(langgraph): 1.2.6 ( #8139 ) fix: nested subgraph inherits parent checkpoint_ns (regression in 1.2.3) ( #8053 ) fix: cancel running subgraphs on v3 stream abort [closes #8029 ] ( #8057 ) release(cli): 0.4.30 ( #8101 ) docs: standardize package README.md structure ( #8064 ) chore(deps): bump tornado from 6.5.5 to 6.5.6 in /libs/langgraph ( #8063 )

Changes since cli==0.4.29 release(cli): 0.4.30 ( #8101 ) feat(cli): support compatible api version ranges ( #8023 ) docs: standardize package README.md structure ( #8064 )

Changes since 1.2.4 release(langgraph): 1.2.5 ( #8062 ) fix(langgraph): merge lc_versions config metadata ( #8052 ) release(cli): 0.4.28 ( #8041 ) fix: updateState bug for deltaChannel on empty thread ( #8011 ) chore: migrate Python type checking to ty ( #8002 ) chore(deps-dev): bump types-requests from 2.33.0.20260408 to 2.33.0.20260518 in /libs/langgraph ( #7977 ) chore(deps): bump the minor-and-patch group in /libs/langgraph with 14 updates ( #7975 )

Changes since cli==0.4.28 release(cli): 0.4.29 ( #8046 ) feat(cli): add support for passing certfile and cert key to run dev server under HTTPS ( #8031 )

Changes since cli==0.4.27 release(cli): 0.4.28 ( #8041 ) chore(deps): bump starlette from 1.0.0 to 1.0.1 in /libs/cli ( #8005 ) chore: migrate Python type checking to ty ( #8002 ) chore(deps): bump the minor-and-patch group in /libs/cli with 4 updates ( #7962 ) chore(deps): bump typescript from 5.9.3 to 6.0.3 in /libs/cli/js-monorepo-example ( #7672 ) chore(deps-dev): bump typescript from 5.9.3 to 6.0.3 in /libs/cli/js-examples in the major group across 1 directory ( #7966 ) chore(deps-dev): bump mypy from 1.20.2 to 2.1.0 in /libs/cli in the major group ( #7968 ) chore(deps): bump the minor-an...

Changes since 1.2.3 release(langgraph): 1.2.4 ( #7991 ) test(sdk-py): add factory-graph integration test exercising the server factory path ( #7978 ) fix(langgraph): keep _on_started backward-compatible with overrides predating cause ( #7987 )

Changes since sdk==0.4.0 release(sdk-py): 0.4.1 ( #7944 ) feat(sdk-py): extract stream decoders and add interleave_projections ( #7935 ) feat(langgraph): add v3 streaming support to RemoteGraph ( #7927 ) fix(sdk-py): make tools_agent fake model stateless ( #7930 )

Changes since sdk==0.4.1 release(sdk-py): 0.4.2 ( #7955 ) fix(sdk-py): percent-encode thread_id in v3 stream transport default paths ( #7954 )

Changes since 1.2.2 release(langgraph): 1.2.3 ( #7945 ) feat(langgraph): wire RemoteGraph.interleave to sdk-py interleave_projections ( #7938 ) feat(langgraph): add v3 streaming support to RemoteGraph ( #7927 ) feat(langgraph): name tool-dispatched subagents via lc_agent_name ( #7928 ) fix(langgraph): rename ProtocolEvent.eventId to event_id to match the wire field ( #7942 ) fix(langgraph): merge instead of overwrite in ensure_config for callbacks, tags, metadata, configurable ( #7926 ) fix(langgraph): [LSD-1507] Distinguish between user cancelled and other cancellations ( #7920 ) fix(cli): bu...

Changes since cli==0.4.26 release(cli): 0.4.27 ( #7925 ) fix(cli): pin internal_docker deploy images by digest ( #7924 ) fix(cli): bump api bound to 0.10.0 ( #7922 ) chore(deps): bump the uv group across 2 directories with 1 update ( #7853 ) chore(deps): bump idna from 3.11 to 3.15 in /libs/cli ( #7865 ) chore(deps): bump turbo from 2.9.7 to 2.9.14 in /libs/cli/js-monorepo-example ( #7868 ) chore(deps): bump langsmith from 0.6.3 to 0.7.1 in /libs/cli/js-monorepo-example ( #7854 ) chore(deps): bump langsmith from 0.7.32 to 0.8.0 in /libs/cli ( #7791 ) chore(deps): bump langsmith from 0.5.20 to ...

Changes since sdk==0.3.15 release(sdk-py): 0.4.0 ( #7923 ) feat(sdk-py): add thread stream helpers ( #7833 ) feat(sdk-py): wire websocket stream selection ( #7832 ) feat(sdk-py): add websocket stream transports ( #7830 ) feat(sdk-py): harden streaming reconnects ( #7829 ) feat(sdk-py): add sync scoped subgraphs ( #7828 ) feat(sdk-py): add sync messages and tool calls ( #7827 ) feat(sdk-py): add sync thread stream core ( #7826 ) feat(sdk-py): add async stream reconnect support ( #7825 ) feat(sdk-py): add scoped subgraph handles ( #7824 ) feat(sdk-py): add messages and tool call projections ( #7...

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/co...

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 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 ...

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 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 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 ( #769...

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(langgr...

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): bu...

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 ...

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 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 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 checkpoint==4.1.0a2 release: alpha bump (a3) for langgraph, checkpoint, checkpoint-postgres ( #7678 ) chore(langgraph): use two phase read to avoid unnecessary data transport ( #7660 ) release: alpha for timers ( #7647 ) feat(langgraph): DeltaChannel : store sentinel in blobs, reconstruct from checkpoint_writes ( #7586 ) chore: dynamic push-task timeouts ( #7646 ) chore: update x links to langchain_oss ( #7645 ) release(checkpoint): 4.0.3 ( #7625 ) fix(checkpoint): revive lc=2 JSON blobs for safe types without allowlist ( #7582 )

Changes since checkpointpostgres==3.1.0a1 release: alpha bump (a3) for langgraph, checkpoint, checkpoint-postgres ( #7678 ) chore(langgraph): use two phase read to avoid unnecessary data transport ( #7660 )

Changes since prebuilt==1.0.13 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 ) fix(langgraph): arrival-ordered interleave for StreamChannel projections ( #7643 ) fix(prebuilt): default ToolRuntime tools to empty list ( #7650 ) release: alpha for timers ( #7647 ) chore: update x links to langchain_oss ( #7645 ) refactor(langgraph,prebuilt): merge EventLog into StreamChannel with optional name ( #7637 ) feat(langgraph): add ...

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 1.2.0a2 feat(langgraph): dispatch stream_events(version='v3') on Pregel ( #7677 ) release: alpha bump (a3) for langgraph, checkpoint, checkpoint-postgres ( #7678 ) chore(langgraph): use two phase read to avoid unnecessary data transport ( #7660 ) fix(langgraph): make NodeTimeoutError retryable by default ( #7659 ) fix(langgraph): arrival-ordered interleave for StreamChannel projections ( #7643 ) feat(langgraph): add node-level error handlers ( #7233 ) feat: allow graph to graceful shutdown/drain by request ( #7274 ) release: alpha for timers ( #7647 ) feat(langgraph): DeltaChanne...

Changes since 1.2.0a3 release: alpha bump prebuilt 1.1.0a1, langgraph 1.2.0a4 ( #7679 )

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 checkpoint==4.1.0a1

Changes since checkpointpostgres==3.0.5 release(checkpoint-postgres): pin to checkpoint 4.1.0a1 ( #7648 ) release: alpha for timers ( #7647 ) feat(langgraph): DeltaChannel : store sentinel in blobs, reconstruct from checkpoint_writes ( #7586 ) 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-postgres ( #7527 ) 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-postgr...

Changes since 1.2.0a1 fix(langgraph): make NodeTimeoutError retryable by default ( #7659 ) fix(langgraph): arrival-ordered interleave for StreamChannel projections ( #7643 ) feat(langgraph): add node-level error handlers ( #7233 )

Changes since checkpoint==4.0.3 release: alpha for timers ( #7647 ) feat(langgraph): DeltaChannel : store sentinel in blobs, reconstruct from checkpoint_writes ( #7586 ) chore: dynamic push-task timeouts ( #7646 ) chore: update x links to langchain_oss ( #7645 )

Changes since 1.1.10 feat: allow graph to graceful shutdown/drain by request ( #7274 ) release: alpha for timers ( #7647 ) feat(langgraph): DeltaChannel : store sentinel in blobs, reconstruct from checkpoint_writes ( #7586 ) chore: dynamic push-task timeouts ( #7646 ) chore: update x links to langchain_oss ( #7645 ) chore: idle timeout ( #7631 ) feat(langgraph): native v2 projections for custom, updates, checkpoints, debug, tasks ( #7640 ) fix(langgraph): decouple run.output/interrupted/interrupts from ValuesTransformer ( #7639 ) refactor(langgraph,prebuilt): merge EventLog into StreamChannel ...

Changes since prebuilt==1.0.12 fix(prebuilt): default ToolRuntime tools to empty list ( #7650 ) release: alpha for timers ( #7647 ) chore: update x links to langchain_oss ( #7645 ) refactor(langgraph,prebuilt): merge EventLog into StreamChannel with optional name ( #7637 ) 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 )

Changes since prebuilt==1.0.11 release(prebuilt): 1.0.12, langgraph 1.1.10 ( #7623 ) release(checkpoint): 4.0.3 ( #7625 ) fix(prebuilt): hydrate ToolNode state from channels via pregel helpers ( #7594 )

Changes since 1.1.9 release(prebuilt): 1.0.12, langgraph 1.1.10 ( #7623 ) Revert "chore: node-level timeouts" ( #7627 ) release(checkpoint): 4.0.3 ( #7625 ) chore(deps): bump nbconvert from 7.17.0 to 7.17.1 in /libs/langgraph ( #7573 ) chore(deps): bump python-dotenv from 1.2.1 to 1.2.2 in /libs/langgraph ( #7574 ) chore: node-level timeouts ( #7599 ) release(prebuilt): 1.0.11 ( #7610 ) feat(prebuilt): allow ToolNode tools to return list[Command | ToolMessage] ( #7596 )

Changes since checkpoint==4.0.2 release(checkpoint): 4.0.3 ( #7625 ) fix(checkpoint): revive lc=2 JSON blobs for safe types without allowlist ( #7582 ) chore: dedup warnings ( #7257 ) chore(deps): bump langsmith from 0.6.4 to 0.7.31 in /libs/checkpoint ( #7525 )

Changes since prebuilt==1.0.10 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 ) feat(prebuilt): expose available tools on ToolRuntime ( #7512 ) release(langgraph): 1.1.8 ( #7545 )

Changes since cli==0.4.23 chore: mixup cli formatting ( #7585 ) chore(deps): bump the pip group across 3 directories with 1 update ( #7537 )

Changes since 1.1.8 chore(langgraph): bump version 1.1.8 -> 1.1.9 ( #7563 ) fix(langgraph): don't propagate ReplayState to subgraphs on plain resume ( #7561 ) chore(langgraph): undo unnecessary changes in stream handler ( #7536 )

Changes since 1.1.7 release(langgraph): 1.1.8 ( #7545 ) fix(langgraph): remove strict add_handler type check that breaks OTel instrumentation ( #7544 ) release(prebuilt): 1.0.10 ( #7541 ) release(cli): 0.4.23 ( #7542 )

Changes since prebuilt==1.0.9 release(prebuilt): 1.0.10 ( #7541 ) release(langgraph): 1.1.7 ( #7540 ) fix(prebuilt): handle injected NotRequired keys ( #7392 ) chore(deps): bump langsmith from 0.6.4 to 0.7.31 in /libs/prebuilt ( #7530 ) release(checkpoint): 4.0.2 ( #7518 ) chore(deps): bump pytest from 9.0.2 to 9.0.3 in /libs/prebuilt ( #7505 ) release(langgraph): 1.1.7a2 ( #7511 ) chore: allow passing some metadata only for tracing purposes ( #7383 ) release(langgraph): 1.1.7a1 ( #7476 ) chore(deps-dev): bump the minor-and-patch group in /libs/prebuilt with 3 updates ( #7376 ) release: langgr...

Changes since cli==0.4.22 release(cli): 0.4.23 ( #7542 )