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API reference

LangGraph API reference

cyclical orchestration framework for stateful, multi-actor agents with streaming and human-in-the-loop

Identifiers: 65
With full guides: 0
Types: 8

Topics covered

StateGraph
Functional entrypoints
Checkpointers
Cross-thread memory store
Human-in-the-loop interrupt
Command branching
Subgraphs
Pregel runtime

Class

Name	What it does
`StateGraph`	Class
`Graph`	Class
`CompiledStateGraph`	Class
`MessageGraph`	Class
`Pregel`	Class
`MemorySaver`	Class
`BaseCheckpointSaver`	Class
`AsyncSqliteSaver`	Class
`InMemoryStore`	Class
`BaseStore`	Class
`Command`	Class
`Send`	Class
`StateSnapshot`	Class
`Channel`	Class
`BinaryOperatorAggregate`	Class
`SqliteSaver`	Class
`PostgresSaver`	Class
`AsyncPostgresSaver`	Class
`LastValue`	Class
`Topic`	Class
`EphemeralValue`	Class
`RemainingSteps`	Class
`Runtime & context_schema`	Class
`InMemorySaver`	Class
`RetryPolicy`	Class
`TimeoutPolicy`	Class
`CachePolicy`	Class
`ToolNode`	Class
`RemoteGraph`	Class

Function

Name	What it does
`interrupt`	Function
`create_react_agent`	Function
`add_messages`	Function
`get_state`	Function
`update_state`	Function
`add_conditional_edges`	Function
`add_sequence`	Function
`get_stream_writer`	Function
`stream_events`	Function
`get_state_history`	Function
`get_store`	Function
`tools_condition`	Function

Interface

Name	What it does
`PregelExecutable`	Interface
`BaseCheckpointSerializer`	Interface

Type Alias

Name	What it does
`MessagesState`	Type Alias
`Checkpoint`	Type Alias
`CheckpointMetadata`	Type Alias
`CheckpointTuple`	Type Alias
`Item`	Type Alias
`SearchItem`	Type Alias
`ResubmitConfig`	Type Alias
`PregelTask`	Type Alias

Const

Name	What it does
`START`	Const
`END`	Const
`recursion_limit`	Const
`Command.PARENT`	Const

Decorator

Name	What it does
`entrypoint`	Decorator
`task`	Decorator

Module

Name	What it does
`input_schema / output_schema`	Module
`Command(resume=...)`	Module
`Subgraphs`	Module
`stream_mode`	Module
`durability`	Module
`Semantic memory search`	Module
`langgraph.json`	Module

Command

Name	What it does
`langgraph dev`	Command

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