{ "subreddit": "r/LangChain", "page": "https://redlisten.com/r/langchain", "updated": "2026-11-09T09:11:22.835Z", "members": 110643, "activity": { "posts_last_24_hours": 8, "posts_per_hour": 0.3, "comments_per_hour": 1.2, "newest_post_utc": 1794204564.725, "newest_comment_utc": 1794194175.611 }, "top_threads_this_week": [ { "title": "Agent Graph Engineering, parts 2 to 7: services, contracts, tools, subgraphs, and stopping for a person", "score": 33, "comments": 8, "created_utc": 1793616580.725, "snippet": "Hi all, A while back I shared the start of a series on building a LangGraph app that survives contact with production (that post). Six more parts are up since then. These are the...", "url": "https://www.reddit.com/r/LangChain/comments/1xlu12y/agent_graph_engineering_parts_2_to_7_services/" }, { "title": "qdrant vs pgvector?", "score": 13, "comments": 8, "created_utc": 1794059667.236, "snippet": "Hi folks, anyone using qdrant or pgvector, please share your experience working with them and your reason for going with them instead of others?", "url": "https://www.reddit.com/r/LangChain/comments/1xq6wvp/qdrant_vs_pgvector/" }, { "title": "How do you catch third-party API schema drift when a LangChain tool still returns 200?", "score": 13, "comments": 18, "created_utc": 1793741633.947, "snippet": "A tool calls a vendor API. The vendor renames customerid to id, the response is still valid JSON, and the tool call succeeds at the HTTP level. The first obvious failure might be a later step that...", "url": "https://www.reddit.com/r/LangChain/comments/1xn5wib/how_do_you_catch_thirdparty_api_schema_drift_when/" }, { "title": "I built a fully offline RAG system on my laptop with Ollama (zero API fees)", "score": 10, "comments": 9, "created_utc": 1793712727.459, "snippet": "Just published a short practical video where I run RAG completely offline on my own laptop using Ollama. No cloud, no API keys, no data leaving the machine. In the video I show: Setting up local...", "url": "https://www.reddit.com/r/LangChain/comments/1xmt0a4/i_built_a_fully_offline_rag_system_on_my_laptop/" }, { "title": "which vector database you use in your production/mvp RAG and why did you choose over others?", "score": 9, "comments": 17, "created_utc": 1793969433.346, "snippet": "Hi folks, curious on what vector database do you guys use in your production/mvp and why did you choose to go with your choice over others?", "url": "https://www.reddit.com/r/LangChain/comments/1xpc0ei/which_vector_database_you_use_in_your/" }, { "title": "Guide to long-running agentic workflow design", "score": 7, "comments": 0, "created_utc": 1793972123.953, "snippet": "TL;DR: Long-running AI agents eventually suffer from context bloat, state loss, or hallucination loops. I've just published an open-source guide detailing architecture patterns for maintaining...", "url": "https://www.reddit.com/r/LangChain/comments/1xpcy61/guide_to_longrunning_agentic_workflow_design/" }, { "title": "NextRole is now hosted: a multi-agent career assistant on LangGraph + DeepAgents, free to try", "score": 7, "comments": 7, "created_utc": 1793720917.243, "snippet": "A while back I shared NextRole here. It’s a side project where a supervisor agent runs three subagents (hiring recon, resume tailoring and interview coaching) on LangGraph + DeepAgents. It’s now...", "url": "https://www.reddit.com/r/LangChain/comments/1xmwhtw/nextrole_is_now_hosted_a_multiagent_career/" }, { "title": "GPT-OSS-120b, Empty responses and tool calls", "score": 6, "comments": 13, "created_utc": 1793882064.721, "snippet": "I have gpt-oss-120b hosted on azure and use AzureChatOpenAI for model invokes. The model has 2 calls bind to it and for some reason it fails to provide any content and tool\\calls in its response....", "url": "https://www.reddit.com/r/LangChain/comments/1xohiun/gptoss120b_empty_responses_and_tool_calls/" }, { "title": "Text-to-SQL retriever for LangChain/LangGraph that cuts ~91% of schema tokens (#1 on BIRD Mini-Dev)", "score": 6, "comments": 3, "created_utc": 1793670012.316, "snippet": "I built schemagate (Apache-2.0). Instead of pasting the whole schema into the prompt, it picks only the tables a question needs. It runs offline (BM25 plus a small embedder) and makes no model...", "url": "https://www.reddit.com/r/LangChain/comments/1xmfzub/texttosql_retriever_for_langchainlanggraph_that/" }, { "title": "AI agents can call any API we hand them. The hard question is which of those calls are safe to let through.", "score": 4, "comments": 0, "created_utc": 1794139487.592, "snippet": "", "url": "https://www.reddit.com/r/LangChain/comments/1xqwwzo/ai_agents_can_call_any_api_we_hand_them_the_hard/" } ], "newest_posts": [ { "title": "Debug the agent, not just the code", "score": 1, "comments": 0, "created_utc": 1794204564.725, "url": "https://www.reddit.com/r/LangChain/comments/1xrk4ln/debug_the_agent_not_just_the_code/" }, { "title": "If a LangGraph node crashes right after a payment call, resuming the thread sends the payment again. Here is how I'm handling it", "score": 3, "comments": 5, "created_utc": 1794165402.401, "url": "https://www.reddit.com/r/LangChain/comments/1xr6i79/if_a_langgraph_node_crashes_right_after_a_payment/" }, { "title": "I got so tired of burning LLM tokens on raw HTML noise that I built an API to strip URLs into clean Markdown (saves ~92% tokens :3).", "score": 0, "comments": 0, "created_utc": 1794161763.035, "url": "https://www.reddit.com/r/LangChain/comments/1xr50lv/i_got_so_tired_of_burning_llm_tokens_on_raw_html/" }, { "title": "Decision 3.0 is apache and returns a probability per branch, good fit for agent routing?", "score": 3, "comments": 1, "created_utc": 1794154802.391, "url": "https://www.reddit.com/r/LangChain/comments/1xr26z4/decision_30_is_apache_and_returns_a_probability/" }, { "title": "Looking for 3 MCP server operators to test per-agent tokens on read endpoints (observe-only, ~30 min setup)", "score": 2, "comments": 1, "created_utc": 1794148781.052, "url": "https://www.reddit.com/r/LangChain/comments/1xqzwti/looking_for_3_mcp_server_operators_to_test/" }, { "title": "Which approval steps on your agents still actually get read?", "score": 1, "comments": 6, "created_utc": 1794143445.571, "url": "https://www.reddit.com/r/LangChain/comments/1xqy2yi/which_approval_steps_on_your_agents_still/" }, { "title": "AI agents can call any API we hand them. The hard question is which of those calls are safe to let through.", "score": 4, "comments": 0, "created_utc": 1794139487.592, "url": "https://www.reddit.com/r/LangChain/comments/1xqwwzo/ai_agents_can_call_any_api_we_hand_them_the_hard/" }, { "title": "Building an agnostic authority protocol (ADAP) for LangChain agents - Need your feedback", "score": 3, "comments": 12, "created_utc": 1794135155.599, "url": "https://www.reddit.com/r/LangChain/comments/1xqvrqb/building_an_agnostic_authority_protocol_adap_for/" }, { "title": "I built a fully local AI support agent (Ollama + LangChain) and one bad tool description made it refund 3 customers instead of 1", "score": 0, "comments": 4, "created_utc": 1794123251.736, "url": "https://www.reddit.com/r/LangChain/comments/1xqssqp/i_built_a_fully_local_ai_support_agent_ollama/" }, { "title": "I got so tired of burning LLM tokens on raw HTML noise that I built an API to strip URLs into clean Markdown (saves ~92% tokens :3).", "score": 0, "comments": 14, "created_utc": 1794116133.399, "url": "https://www.reddit.com/r/LangChain/comments/1xqqwx8/i_got_so_tired_of_burning_llm_tokens_on_raw_html/" } ], "words_this_week": [ { "word": "agent", "titles": 46 }, { "word": "agents", "titles": 26 }, { "word": "built", "titles": 24 }, { "word": "tool", "titles": 20 }, { "word": "rag", "titles": 18 }, { "word": "langgraph", "titles": 18 }, { "word": "api", "titles": 15 }, { "word": "tools", "titles": 10 }, { "word": "tokens", "titles": 10 }, { "word": "open", "titles": 10 }, { "word": "production", "titles": 8 }, { "word": "mcp", "titles": 8 } ], "preview": "This is a preview. Every post and comment in r/LangChain, live, as JSON or RSS on the same paths a Reddit client uses, plus keyword streams to Slack, Discord, webhook or email, needs a free key: https://app.redlisten.com/?signup=1&utm_source=redlisten&utm_medium=subreddit", "docs": "https://redlisten.com/docs", "attribution": "Source: Redlisten, https://redlisten.com/r/langchain" }