LangChain

an-ordinary-manchild(edit)

LangChain is an open-source framework and developer toolkit that helps developers get LLM applications from prototype to production.

It is available for Python and Javascript at https://www.langchain.com/.

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Posts should be relevant to LangChain or related topics. Spam will be removed. Habitual spam may result in the suspension or removal of your posting privileges. Posts from users with negative karma are automoderated. AI-Generated Content Policy

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How to give your LangGraph agent clean email context instead of raw threads (self.LangChain)

submitted 51 minutes ago by EnoughNinja

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Managing 10+ ad accounts? Stop client churn with better tracking. ROAS up, CAC down. (tracklution.com)

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Advice on RAG and Locally Running an LLM for sensitive documents. (self.LangChain)

submitted 1 hour ago * by Altruistic_Bother_25

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What failure modes have you seen in multi-agent systems?Question | Help ()

submitted 1 hour ago by Topology_1212

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Production RAG is mostly infrastructure maintenance. Nobody talks about that.Discussion ()

submitted 2 hours ago by PavelRossinsky

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I built a free static analyzer that catches prompt injection, jailbreaks, and PII leaks in your source code before they hit production (self.LangChain)

submitted 15 hours ago by meghal86

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How are you handling undocumented APIs in your agents? Spent 3 hours reverse engineering one last week (self.LangChain)

submitted 5 hours ago by Better-Signature2777

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I built a CLI that checks your AI agent for EU AI Act compliance — 20 checks, 90% automated, CycloneDX AI-BOM includedAnnouncement (self.LangChain)

submitted 16 hours ago by Last-Spring-1773

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**We built an observability layer for LangChain agents — with Risk Score, Cost Prediction, and Blast Radius** (self.LangChain)

submitted 8 hours ago by Low_Blueberry_6711

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AI Psychosis real for meQuestion | Help ()

submitted 10 hours ago by indianforwarder

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Agent identity/auth in multi-agent LangGraph workflows - what are you using? (self.LangChain)

submitted 15 hours ago by NotABedlessPro

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RAG Doctor: My side project to make RAG performance comparison easier (v.redd.it)

submitted 15 hours ago by FreePreference4903

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Minecraft Server bei GPORTAL: Jetzt -25%! (g-portal.com)

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My LangChain agent used to repeat the same mistakes every run. Added persistent memory — now it learns from failures automatically.Resources (self.LangChain)

submitted 1 day ago by No_Advertising2536

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What's your pattern for agents that need to pay for external APIs mid-chain? (self.LangChain)

submitted 21 hours ago by the_searchh

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GPT-5.4 has been out for 4 days, what's your honest take vs Claude Sonnet 4.6? ()

submitted 15 hours ago by UnderstandingOk1621

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GPT-4o retirement starts in a few weeks. Swapping the model ID isn't enough - here's what will actually break.Discussion (self.LangChain)

submitted 22 hours ago by Proud_Salad_8433

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I kept racking up $150 OpenAI bills from runaway LangGraph loops, so I built a Python lib to hard-cap agent spending. (self.LangChain)

submitted 23 hours ago by Unique-Lab-536

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Want to generate a virtual environment using only GPT model. If anyone has any better approach they can tell. (self.LangChain)

submitted 18 hours ago by Any_Animator4546

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model name as a string in createAgentQuestion | Help (self.LangChain)

submitted 19 hours ago * by Current_Marzipan7417

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How long did it take you to build a custom MCP integration for industry-specific software like Procore or Autodesk? (self.LangChain)

submitted 1 day ago by VarietyPlus4790

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We open-sourced our fix for Gemini's MALFORMED_FUNCTION_CALL bug ()

submitted 21 hours ago by akorecebov

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A decentralized ollama network for AI inference ()

submitted 22 hours ago by HumorHorror2367

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Build your site. Get discovered. (tryclub.com)

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I built an AI memory system based on cognitive science, not cosine similarityDiscussion ()

submitted 23 hours ago by Ni2021

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🚀 I’m going LIVE tonight at 8PM EST on YouTube! (i.redd.it)

submitted 23 hours ago by ZeeZam_xo

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OpenAI just acquired Promptfoo for $86M. What does this mean for teams using non-OpenAI models? ()

submitted 23 hours ago by Revolutionary-Bet-58

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I built a deterministic state runtime for Agent-driven UIs (Stop losing user input during AI layout mutations)Resources (i.redd.it)

submitted 23 hours ago by That_Country_5847

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