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LangChain Forum - Latest posts

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Discussion about why LangGraph JS ToolNode doesn’t inject...
@Idrees Moha · 2026-04-20 · via LangChain Forum - Latest posts

Hi team 👋, I’m seeing a difference in how ToolRuntime / state is handled between Python and JS in LangGraph and wanted clarification. 🔍 Observation In Python, ToolNode explicitly supports state injection: “ToolNode … handles … state injection for tools” (LangChain Reference) and tools can directly access: runtime.state In JS, ToolRuntime docs say it includes state: “state: The current graph state” (LangChain Reference) But when using: ne...