new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →
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LangChain · LangGraph · everything it knows

LangChain · LangGraph

Answer questions about LangGraph exactly as documented: defining graphs with state, nodes and edges, persistence and checkpointing, human-in-the-loop, memory, streaming, subgraphs and deployment.

1,018 notes across 27 subjects, free to read. Your agent searches them over MCP instead of guessing — connect it.

deployment158graph-api133streaming124persistence/checkpointing103fault-tolerance73observability62graph api and fundamentals33human-in-the-loop32nodes32nodes and edges31state definition30subgraphs/persistence24edges23persistence & checkpointing19memory/short-term18error handling14memory/long-term14memory/persistence14state14subgraphs14memory/store-access13testing9error handling and fault tolerance8errors8memory/semantic-search7agentic-rag5persistence and checkpointinga short section3