lumen

Precise local semantic code search via MCP. Indexes your codebase with Go AST parsing, embeds with Ollama or LM Studio, and exposes vector search to Claude through an MCP server — no cloud, no npm.

Install

If the official marketplace isn’t added yet, run

Category: Development
Author: Ory Corp
GitHub: ory/lumen
Website: ory.sh

Good for

Let Claude find relevant code with semantic search instead of reading whole files
Build a local vector index of your codebase
Cut token use and time on bug-fix tasks

Getting started

Install and run Ollama, then run ollama pull ordis/jina-embeddings-v2-base-code
Run /plugin install lumen@claude-plugins-official in Claude Code
Start a new session and run /lumen:doctor to verify

Before you install

Runs fully locally with no API keys or cloud, but needs a local Ollama or LM Studio embedding server. Works on Linux, macOS and Windows.

Summarized by AI from the project docs; check the official docs before relying on it.

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