langgraph/docs/docs/cloud/reference/langgraph_server_changelog.md

LangGraph Server Changelog

Note: This changelog is no longer actively maintained. For the most up-to-date LangGraph Server changelog, please visit our new documentation site: LangGraph Server Changelog

LangGraph Server is an API platform for creating and managing agent-based applications. It provides built-in persistence, a task queue, and supports deploying, configuring, and running assistants (agentic workflows) at scale. This changelog documents all notable updates, features, and fixes to LangGraph Server releases.

---

v0.2.111 (2025-07-29)

• Started the heartbeat immediately upon connection to prevent JS graph streaming errors during long startups.

v0.2.110 (2025-07-29)

• Added interrupts as default values for all operations except streams to maintain consistent behavior.

v0.2.109 (2025-07-28)

• Fixed an issue where missing config schema occurred when config_type was not set.

v0.2.108 (2025-07-28)

• Added compatibility for langgraph v0.6, including new context API support and a migration to enhance context handling in assistant operations.

v0.2.107 (2025-07-27)

• Implemented caching for authentication processes to improve performance.
• Merged count and select queries to improve database query efficiency.

v0.2.106 (2025-07-27)

• Log whether run uses resumable streams.

v0.2.105 (2025-07-27)

• Added a /heapdump endpoint to capture and save JS process heap data.

v0.2.103 (2025-07-25)

• Corrected the metadata endpoint to ensure accurate data retrieval.

v0.2.102 (2025-07-24)

• Captured interrupt events in the wait method to preserve legacy behavior and stream updates by default.
• Added support for SDK structlog in the JavaScript environment, enhancing logging capabilities.

v0.2.101 (2025-07-24)

• Used the correct metadata endpoint for self-hosted environments, resolving an access issue.

v0.2.99 (2025-07-22)

• Improved license validation by adding an in-memory cache and handling Redis connection errors more effectively.
• Automatically remove agents from memory that are removed from langgraph.json to prevent persistence issues.
• Ensured the UI namespace for generated UI is a valid JavaScript property name to prevent errors.
• Raised a 422 error for improved request validation feedback.

v0.2.98 (2025-07-19)

• Added langgraph node context for improved log filtering and trace visibility.

v0.2.97 (2025-07-19)

• Fixed scheduling issue with ckpt ingestion worker that occurred on isolated background loops.
• Ensured queue worker starts only after all migrations have completed.
• Added more detailed error messages for thread state issues and improved response handling when state updates fail.
• Exposed interrupt ID while retrieving thread state for enhanced API response details.

v0.2.96 (2025-07-17)

• Added a fallback mechanism for configurable header patterns to handle exclude/include settings more effectively.

v0.2.95 (2025-07-17)

• Avoided setting the future if it is already done to prevent redundant operations.
• Resolved compatibility errors in CI by switching from typing.TypedDict to typing_extensions.TypedDict for Python versions below 3.12.

v0.2.94 (2025-07-16)

• Improved performance by omitting pending sends for langgraph versions 0.5 and above.
• Improved server startup logs to provide clearer warnings when the DD_API_KEY environment variable is set.

v0.2.93 (2025-07-16)

• Removed the GIN index for run metadata to improve performance.

v0.2.92 (2025-07-16)

• Enabled copying functionality for blobs and checkpoints, improving data management flexibility.

v0.2.91 (2025-07-16)

• Reduced writes to the checkpoint_blobs table by inlining small values (null, numeric, str, etc.). This means we don't need to store extra values for channels that haven't been updated.

v0.2.90 (2025-07-16)

• Improve checkpoint writes via node-local background queueing.

v0.2.89 (2025-07-15)

• Decoupled checkpoint writing from thread/run state by removing foreign keys and updated logger to prevent timeout-related failures.

v0.2.88 (2025-07-14)

• Removed the foreign key constraint for thread in the run table to simplify database schema.

v0.2.87 (2025-07-14)

• Added more detailed logs for Redis worker signaling to improve debugging.

v0.2.86 (2025-07-11)

• Honored tool descriptions in the /mcp endpoint to align with expected functionality.

v0.2.85 (2025-07-10)

• Added support for the on_disconnect field to runs/wait and included disconnect logs for better debugging.

v0.2.84 (2025-07-09)

• Removed unnecessary status updates to streamline thread handling and updated version to 0.2.84.

v0.2.83 (2025-07-09)

• Reduced the default time-to-live for resumable streams to 2 minutes.
• Enhanced data submission logic to send data to both Beacon and LangSmith instance based on license configuration.
• Enabled submission of self-hosted data to a Langsmith instance when the endpoint is configured.

v0.2.82 (2025-07-03)

• Addressed a race condition in background runs by implementing a lock using join, ensuring reliable execution across CTEs.

v0.2.81 (2025-07-03)

• Optimized run streams by reducing initial wait time to improve responsiveness for older or non-existent runs.

v0.2.80 (2025-07-03)

• Corrected parameter passing in the logger.ainfo() API call to resolve a TypeError.

v0.2.79 (2025-07-02)

• Fixed a JsonDecodeError in checkpointing with remote graph by correcting JSON serialization to handle trailing slashes properly.
• Introduced a configuration flag to disable webhooks globally across all routes.

v0.2.78 (2025-07-02)

• Added timeout retries to webhook calls to improve reliability.
• Added HTTP request metrics, including a request count and latency histogram, for enhanced monitoring capabilities.

v0.2.77 (2025-07-02)

• Added HTTP metrics to improve performance monitoring.
• Changed the Redis cache delimiter to reduce conflicts with subgraph message names and updated caching behavior.

v0.2.76 (2025-07-01)

• Updated Redis cache delimiter to prevent conflicts with subgraph messages.

v0.2.74 (2025-06-30)

• Scheduled webhooks in an isolated loop to ensure thread-safe operations and prevent errors with PYTHONASYNCIODEBUG=1.

v0.2.73 (2025-06-27)

• Fixed an infinite frame loop issue and removed the dict_parser due to structlog's unexpected behavior.
• Throw a 409 error on deadlock occurrence during run cancellations to handle lock conflicts gracefully.

v0.2.72 (2025-06-27)

• Ensured compatibility with future langgraph versions.
• Implemented a 409 response status to handle deadlock issues during cancellation.

v0.2.71 (2025-06-26)

• Improved logging for better clarity and detail regarding log types.

v0.2.70 (2025-06-26)

• Improved error handling to better distinguish and log TimeoutErrors caused by users from internal run timeouts.

v0.2.69 (2025-06-26)

• Added sorting and pagination to the crons API and updated schema definitions for improved accuracy.

v0.2.66 (2025-06-26)

• Fixed a 404 error when creating multiple runs with the same thread_id using on_not_exist="create".

v0.2.65 (2025-06-25)

• Ensured that only fields from assistant_versions are returned when necessary.
• Ensured consistent data types for in-memory and PostgreSQL users, improving internal authentication handling.

v0.2.64 (2025-06-24)

• Added descriptions to version entries for better clarity.

v0.2.62 (2025-06-23)

• Improved user handling for custom authentication in the JS Studio.
• Added Prometheus-format run statistics to the metrics endpoint for better monitoring.
• Added run statistics in Prometheus format to the metrics endpoint.

v0.2.61 (2025-06-20)

• Set a maximum idle time for Redis connections to prevent unnecessary open connections.

v0.2.60 (2025-06-20)

• Enhanced error logging to include traceback details for dictionary operations.
• Added a /metrics endpoint to expose queue worker metrics for monitoring.

v0.2.57 (2025-06-18)

• Removed CancelledError from retriable exceptions to allow local interrupts while maintaining retriability for workers.
• Introduced middleware to gracefully shut down the server after completing in-flight requests upon receiving a SIGINT.
• Reduced metadata stored in checkpoint to only include necessary information.
• Improved error handling in join runs to return error details when present.

v0.2.56 (2025-06-17)

• Improved application stability by adding a handler for SIGTERM signals.

v0.2.55 (2025-06-17)

• Improved the handling of cancellations in the queue entrypoint.
• Improved cancellation handling in the queue entry point.

v0.2.54 (2025-06-16)

• Enhanced error message for LuaLock timeout during license validation.
• Fixed the $contains filter in custom auth by requiring an explicit ::text cast and updated tests accordingly.
• Ensured project and tenant IDs are formatted as UUIDs for consistency.

v0.2.53 (2025-06-13)

• Resolved a timing issue to ensure the queue starts only after the graph is registered.
• Improved performance by setting thread and run status in a single query and enhanced error handling during checkpoint writes.
• Reduced the default background grace period to 3 minutes.

v0.2.52 (2025-06-12)

• Now logging expected graphs when one is omitted to improve traceability.
• Implemented a time-to-live (TTL) feature for resumable streams.
• Improved query efficiency and consistency by adding a unique index and optimizing row locking.

v0.2.51 (2025-06-12)

• Handled CancelledError by marking tasks as ready to retry, improving error management in worker processes.
• Added LG API version and request ID to metadata and logs for better tracking.
• Added LG API version and request ID to metadata and logs to improve traceability.
• Improved database performance by creating indexes concurrently.
• Ensured postgres write is committed only after the Redis running marker is set to prevent race conditions.
• Enhanced query efficiency and reliability by adding a unique index on thread_id/running, optimizing row locks, and ensuring deterministic run selection.
• Resolved a race condition by ensuring Postgres updates only occur after the Redis running marker is set.

v0.2.46 (2025-06-07)

• Introduced a new connection for each operation while preserving transaction characteristics in Threads state update() and bulk() commands.

v0.2.45 (2025-06-05)

• Enhanced streaming feature by incorporating tracing contexts.
• Removed an unnecessary query from the Crons.search function.
• Resolved connection reuse issue when scheduling next run for multiple cron jobs.
• Removed an unnecessary query in the Crons.search function to improve efficiency.
• Resolved an issue with scheduling the next cron run by improving connection reuse.

v0.2.44 (2025-06-04)

• Enhanced the worker logic to exit the pipeline before continuing when the Redis message limit is reached.
• Introduced a ceiling for Redis message size with an option to skip messages larger than 128 MB for improved performance.
• Ensured the pipeline always closes properly to prevent resource leaks.

v0.2.43 (2025-06-04)

• Improved performance by omitting logs in metadata calls and ensuring output schema compliance in value streaming.
• Ensured the connection is properly closed after use.
• Aligned output format to strictly adhere to the specified schema.
• Stopped sending internal logs in metadata requests to improve privacy.

v0.2.42 (2025-06-04)

• Added timestamps to track the start and end of a request's run.
• Added tracer information to the configuration settings.
• Added support for streaming with tracing contexts.

v0.2.41 (2025-06-03)

• Added locking mechanism to prevent errors in pipelined executions.