#langchain

All the articles tagged with "langchain".

• Sep 21, 2026 · 14 min read

  LangChain and Qdrant with OpenRouter in Node.js

  Turn a folder of text files into something you can ask questions about. Qdrant stores the vectors, OpenRouter runs the models, LangChain glues it together.

• Sep 19, 2026 · 26 min read

  RAG with LangChain, pgvector and Node.js

  Same notes, same Postgres table, same questions as the hand-written version. This time LangChain does the splitting, storing, searching and prompting, still in one TypeScript file.