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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.

v0.2.85 (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.