LangGraph's latest update gives you greater control over your agents by enabling tools to directly update the graph state. This is a game-changer for use cases like customer support agents who need to look up and remember user info during conversations.

See the Python docs: https://langchain-ai.github.io/langgraph/how-tos/update-state-from-tools/

See the JavaScript docs: https://langchain-ai.github.io/langgraphjs/how-tos/update-state-from-tools/