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LangChain Forum - Latest posts

Proposal: additional docs for implementing custom DB checkpointers or a guide on generic base checkpointer Langsmith Fleet Sandbox Failure Prompt_cache_retention: &#39;24h&#39; supported in langchain agents and where to provide it, inside invoke or while creating client? Could RAG pipelines realistically cause deployment timeouts, is Render suitable for first-time RAG deployments? How do I use langchain_postgres&#39; init_vectorstore_table correctly? Proposal: Graph-wide default error handler for StateGraph (fallback for nodes without error_handler) Support timedelta for CachePolicy.ttl, consistent with TimeoutPolicy The x402 illusion: Is advertising dead in the age of agents? 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? 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Physical control surface for AI agents — feedback wanted
@von-develop · 2026-04-19 · via LangChain Forum - Latest posts

1

Hi all,

One thing I notice in the LangGraph ecosystem is that almost no projects touch hardware. Everything lives in chat windows, terminals, or browser UIs.

So I’ve been brainstorming an idea: a physical control surface for AI agents. Think Stream Deck, but buttons (touch scrren) trigger agent workflows or set up cron jobs instead of macros

A few honest questions before I go further:

  1. If you had something like this on your desk, what would you actually use it for?
  2. Does this sound useful or just a cool toy?

Would love honest pushback.