Subreddit rules check
r/langchain
Can you promote here?
Promotion is allowed only with moderator permission (or inside designated threads). A short, honest modmail before posting costs two minutes and functions as a safe-conduct pass; skipping it is the most common avoidable removal.
From the rules · Promotional/self-promotional posts are frequently removed as spam—include substantial technical detail or ask moderators first; posts from users with negative karma are auto-moderated.
Links
No explicit link policy. Default to no URL: link-plus-young-account is one of the most common automated removal patterns on Reddit.
What this community rewards
Dominant post formats: guide, question, showcase
Headline: short, technical (e.g., “LangChain + FAISS: streaming RAG demo”). Write in first-person or neutral third-person with concrete code snippets, examples, and results. Typical length: short-to-medium (200–800 words) with runnable samples or links to a repo. Tone: technical, collaborative, troubleshooting. Upvoted: reproducible guides, debugging posts, demo projects; Removed: vague marketing, unverifiable benchmarks, or AI-generated fluff.
Arriving in the local format matters: cross-posting the same text everywhere reads as tourist instantly. The wider method is in the Reddit playbook.
Classified mechanically from the community's published rules and recent top posts, last checked July 2026. Rules change and moderators have the final say: verify at r/langchain's rules page before posting anything that matters.
Thread Otter checks this before every send
These profiles power the product: promo-banned communities never receive a promotional draft, drafts arrive in the local format, and a fact-check gate plus human pacing protect the account doing the talking.