lumen

Lumen is a 100% local semantic code search engine for AI coding agents. It uses open-source embedding models, SQLite, and your CPU to provide fast and cost-effective code understanding. No API keys or cloud required.

lumen sits in the RAG / Knowledge Base category, so it is usually better judged by workflow fit, deployment style, and team needs than by isolated features alone. Based on the available metadata, it leans most clearly toward Semantic vector search. A representative use case is Enhancing AI coding agents to find relevant code quickly. The listed license is NOASSERTION. GitHub stars are currently 311. Relevant tags include agentic-coding, claude.