0.2.29

langgraph 0.2.29

Summary of Changes

• Migrated store implementation to langgraph-checkpoint #1834
• Enhanced create_react_agent to support more model types beyond BaseChatModel #1647
• Fixed configuration handling to prevent errors when accessing configuration values #1912
• Removed docstring reference to unused parameter in Topic channel #1884
• Migrated typing imports to typing_extensions #1869

Detailed Changes

langgraph.managed.shared_value.SharedValue

• Updated to use the new store interface from langgraph-checkpoint
• Changed namespace representation from strings to tuples for better organization
• Updated method calls from list/put to search/batch for better semantics and performance
• Made internal changes to process updates with the new store API #1834

langgraph.pregel.Pregel

• Added support for custom stores via configuration
• Updated store handling to use the new store interface
• Added store parameter propagation through the execution stack
• Enhanced checkpoint handling with better parent config tracking #1834

langgraph.utils.config.merge_configs

• Fixed a bug where the merged configuration might not have the CONF key, now ensuring it always exists #1912

langgraph.utils.runnable.RunnableCallable

• Updated to properly handle required configuration keys
• Improved error messages when required config keys are missing #1834

langgraph.prebuilt.chat_agent_executor.create_react_agent

• Enhanced to accept LanguageModelLike instead of just BaseChatModel
• Added _should_bind_tools function to intelligently determine if tools need to be bound to the model
• Fixed tool binding to avoid redundant binding when tools are already configured
• Improved error handling for mismatched tools #1647