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LangChain Forum - Topics tagged intro-to-langgraph

Does HITL approval actually bind the action that reaches the executor? Production use of PostgresSaver: service-owned migrations and checkpoint retention in Node.js How are you guys stopping agents from silent loops/stampedes? Standard step_counters feel like garbage Introducing Langshark a local-first companion observability tool for self-hosted Langgraph deployments Help Needed : Best practices for client-side metadata filtering in custom checkpoint implementations? How do you actually decide between LangGraph, AutoGen, and which model to use for a task? Feedback requested: evaluating commit-time action validity in LangGraph workflows DeltaChannel + RemoveMessage message compression — how to express deletions with incremental storage? Research Q: what blocks your first LangGraph prod deploy? (not a pitch) A LangGraph checkpointer with provable thread deletion (signed erasure receipts) — feedback welcome Adding an end-to-end example: from locally-served model to agentic flow orchestration Deep Agent state cumbersome Sanity-check my LangGraph design before product demo LangGraph orchestration Problem Re-execute / restart from a specific task in a functional API AttributeError: 'AsyncSandboxClient' object has no attribute 'get_template' What is the equivalent of a transaction log for agent systems? Null-drift: A bare-metal O(1) Memory Store for continuous LangGraph agents Interrupt does not work correctly in LangGraph Pre-interrupt() code re-runs on resume — anti-pattern, or is there a sanctioned way to detect resume? Would pre-inference routing help long-context agent workflows? Improving citation accuracy and reducing hallucinations in custom Parent-Child RAG pipeline (Gemma3:4B + FAISS+BM25 + Cross-encoder reranker) WikipediaLoader endup in JSONDecodeError Using LangGraph interrupt for multi-step wizards with branching — right tool or wrong abstraction? Built NORNR for spend governance in agent workflows LangGraph + PostgreSQL: Chat history and summarization best practice No cost displayed in LangSmith when using LiteLLM + LangGraph LiteLLM Router in LangChain: Missing Model Name and Cost in LangSmith Traces I find langgraph chat in documents useful, how can I hook it up as mcp or skill or a tool for the Claude Code? Can I get User IDs and Bot IDs of bots used in Slack channels for personal projects
Discussion about why LangGraph JS ToolNode doesn’t inject...
@Idrees Moha · 2026-04-20 · via LangChain Forum - Topics tagged intro-to-langgraph

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...