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LangChain Forum - Latest posts

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 How to cancel a run correct !! Question about LangSmith Trace Search via API 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 LangMem support in JS/TS 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 What does the security architecture of AI agents actually look like? Discussion about why LangGraph JS ToolNode doesn’t inject ToolRuntime.state like Python does, and what the correct workaround or intended design pattern is. Bug: Cannot save edited prompt back to Prompt Hub after opening trace run in Playground What does recursionLimit actually count in createAgent? (LangChain JS) 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 Proposal: Add save_local and load_local to USearch VectorStore (Feature Parity with FAISS) How are you handling agent security in production? (Identity, permissions, kill switch) RFC: Human delegation provenance for LangGraph multi-agent chains Build UX for Langgraph Tiny LangGraph -> Assay evidence sample from tasks v2 tool isolation between Skills: How to receive HITL interrupt events via webhook in LangSmith Deployment? Add faiss-node-native as async alternative vector store for FAISS Deep Agents: Clarify Multimodal (Image) Context Management and Compression xat-langchain: signed Agent-Signature headers on every tool call Help with local RAG pipeline – poor retrieval quality, wrong page numbers Building an AI networking agent (LangChain vs LangGraph vs Deep Agents)? LOGIC.md — declarative reasoning contracts that compile to LangGraph StateGraph Distinguishing internal vs final streamed chunks in Supervisor multi-agent architecture Machine-Readable Permissions for Web-Interacting Agents Are people hitting race conditions in multi-agent LangChain setups? How do ContextEditingMiddleware and SummarizationMiddleware interact when used together?Combining ContextEditingMiddleware + SummarizationMiddleware — execution order and behavior when both trigger? How we add runtime security to LangChain agents in production LangSmith Playground returns 401 Invalid token for both /stream and /invoke across accounts How to register type in langgraph Are there any frontends for interacting with a LangGraph agent? Langchain.schema is not available while using in python code In-place model update on a compiled create_agent and per-subagent model update for deep agents - is this possible? Physical control surface for AI agents — feedback wanted Feature Request: Native Support for A2A Protocol (Remote Agents as Sub-Graphs) Feature Request: Image Input support for ChatMistralAI Cache disable in Deepagent Multiple response formats when creating agents? Unable to parse docstring from OpenAI schema Hosting an agent server on Heroku Enable OpenTelemetry traces without sending data to LangSmith How should I deploy a self-hosted multi-agent system? No cost displayed in LangSmith when using LiteLLM + LangGraph Course certificate
Langsmith link is always making me login
@Cruppelt Ch · 2026-05-23 · via LangChain Forum - Latest posts
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