Harness Toolbox/Workflow & graph engines/langchain-ai/langgraph

langchain-ai/langgraph

Build resilient agents.

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PythonMITagentsaiai-agentschatgptdeepagents

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37.5k

Δ 7d

+499

Δ 30d

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Age

2 yrs

Last push

19h ago

90-day star history

#1 of 10 in Workflow & graph engines

Most-wanted open issues

Ranked by 👍 reactions. 391 open issues total, checked 2026-07-17.

Issue	👍	Comments	Opened
langgraph-checkpoint-postgres (psycopg.OperationalError: sending query and params failed: SSL error: bad length) encountered across multiple version bug, external	12	51	1 yr
Run Cancellation Causes Loss of Streamed State Not Yet Persisted as a Checkpoint bug, pending, external	9	32	11 mo
Reflect `pydantic` and `dataclass` types in final output change, internal	6	1	1 yr
In Langgraph studio the subgraph part is not shown when we invoke the subgraphs in the parent graph's node question, external	5	16	1 yr
Add support for Python 3.14 help wanted, ci, internal	5	12	1 yr

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