Discussion about why LangGraph JS ToolNode doesn’t inject ToolRuntime.state like Python does, and what the correct workaround or intended design pattern is.

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LangChain/LangGraph tool args validation middleware 404 on /api/langgraph/threads/{threadId}/commands when running assistant-ui-claude example Null-drift: A bare-metal O(1) Memory Store for continuous LangGraph agents Clarification needed: Assistant config vs context and graph initialization Built a Tigris checkpointer, where to put it? LangSmith cost/token attribution differs between LangGraph v2 streaming and v3 `astream_events` with Anthropic prompt caching How to build a custom subagent which by itself a langgraph graph which have its own schema? Can your LangChain agent spend money without your permission? How are you enforcing hard spending limits on agents in production? [Feature] : Add ArabicTextSplitter with proper Arabic language boundary handling Best Practices for Dynamic User Modeling with LangGraph Proposal: a small local helper for readable run traces via PR Best Practices for Enforcing Tool Call Order in LangGraph? CopilotKit + LangGraph Agent Server (self-hosted): expected integration path without re-exposing graphs? Proxy Authentication Required 407 What is the right way to dynamically create and run a graph? Langsmith-fleet issue Proposal: Add an example for handling line-number hallucinations in AI Code Review workflows How to fix image SHA? How can I verify my runs have been queued for deletion via the API? 3rd party rate limit handling(OpenAI-level rate limiting in LangChain.js) How to define a correct state for multi-agent system Response Format Groq Model Pydantic I hope to get some recommendations for practical skills [Feature]: MetacognitiveGate node — source-aware instruction checking before tool execution Is there a limit on runs deleted by /api/v1/runs/delete when using filtered metadata Access to Langsmith Engine Beginner questions & Troubleshooting: RAG Best practices for Mail Automation Interrupt does not work correctly in LangGraph The Qwen3.6b model in fireworks through initchatmodel reporting hugely inflated tokens For parallel execution in Node, should i use the functional API？ Potential Enhancement: Django-Managed PostgresSaver Pre-interrupt() code re-runs on resume — anti-pattern, or is there a sanctioned way to detect resume? Can a Fleet hosted agent be configured to hit my Langconnect RAG on GCP? Fleet issues.. churn-spin and correct link DeltaChannelHistory not found in langgraph-api:3.13 Interrupt parallel branch execution Governance/policy checkpoint node pattern for LangGraph agents Langsmith link is always making me login I thought client[.]runs[.]wait would actually return the result of my agent's work Best practices for self-hosting LangGraph Server OSS without LangGraph keys Dynamically Enabling/Disabling Graphs in a LangGraph Server at Runtime LangGraph thread copy can take 12+ minutes: recommended production pattern? Can Langgraph postgresql_checkpointer framework implement a function which could delete the latest user ask and some ai messages but not delete the thread_id？ I try to invoke my fleet agent but seems like my Next.js code can't read my api_key environment variable so i get 401 unauthenticated error Will DeltaChannel be the default for AgentState.messages, or expected to stay opt-in? Proposal: additional docs for implementing custom DB checkpointers or a guide on generic base checkpointer Langsmith Fleet Sandbox Failure Prompt_cache_retention: '24h' supported in langchain agents and where to provide it, inside invoke or while creating client? Langgraph deploy CLI cannot deploy to EU Langsmith Cloud Could RAG pipelines realistically cause deployment timeouts, is Render suitable for first-time RAG deployments? Getting 404 when clicking "Connect Github" on the Issues/Langsmith Engine tab How do I use langchain_postgres' init_vectorstore_table correctly? Proposal: Graph-wide default error handler for StateGraph (fallback for nodes without error_handler) Using LangChain for a simple capcut video workflow automation — is this reasonable? Support timedelta for CachePolicy.ttl, consistent with TimeoutPolicy The x402 illusion: Is advertising dead in the age of agents? Run link 404s — v2 endpoint can't find run that v1 just returned Is there any way to disable the system default tools such as ls , read_files etc Question about LangSmith Trace Search via API How to cancel a run correct ！！ Anyone confirms this issue that deepagent ui streaming is disturb by update in deepagent or bug issue Would pre-inference routing help long-context agent workflows? Best Stack for Building AI Applications Question about LangSmith Trace Search Seeking help regarding the connection between Websocket and tool calls Tool invocation error with empty error message when using `InjectedState` + `Command` return in async tool How to use @langchain/react FileSystem middleware Using ChatSnowflake with agents Built llmsessioncontract on AgentMiddleware: runtime enforcement of tool-call protocols — feedback wanted DeltaChannelHistory not found in langgraph-api:3.12 Improving citation accuracy and reducing hallucinations in custom Parent-Child RAG pipeline (Gemma3:4B + FAISS+BM25 + Cross-encoder reranker) Metadata filter not filtering for alerts Connecting the Slack integration fails with invalid_team_for_non_distributed_app Trouble understanding and editing experiment summary evaluators feedbacks SSL certificate error from httpx with LangGraph server WikipediaLoader endup in JSONDecodeError Human-in-the-loop approval dashboard for LangGraph agents — open source, free to deploy How are people handling data governance across agent handoffs in production? Feature Request: @task metadata Research: Friction Points in Agentic Commerce Transactions How should I provide an agent to a LangGraph server? Parallel astream() on the same compiled graph leaks messages between streams How I added claim verification to a LangChain agent in 5 minutes (with code) Interested in contributing a DynamoDB checkpointer for LangGraph.js A set of speculative ideas on treating LLM agents as interpreters with limited working memory, using externalized structures for reliable long-term project maintenance. Where should I define the name and description for subagents? Add Qdrant-backed checkpoint saver and memory store (langgraph-checkpoint-qdrant) The output content has been corrupted Incorrect `reasoning_effort` options in the UI A Minimal Receipt + Validator Pattern for Tool-Calling Agents Feature Request: Simple cryptographic provenance for who authorized what in LangGraph multi-agent graphs Using LangGraph interrupt for multi-step wizards with branching — right tool or wrong abstraction? Portable departure and admission records for LangChain agents Socratic Tools: Intelligent Agent Enhancement for LangChain Built NORNR for spend governance in agent workflows LangGraph + PostgreSQL: Chat history and summarization best practice Using SQLRecordManager multi-agent systems debugging agent-to-agent

@Idrees Moha · 2026-04-20 · via LangChain Forum - Latest posts

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