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Clewso

The Open Source Context Server for AI Agents.

Clewso indexes your codebase and gives AI agents structured, navigable context by combining vector search (Qdrant) with graph traversal (Neo4j). It solves the "Lost in the Middle" problem so your agents actually understand your code.

Features

  • Hybrid search — semantic vector search + code graph traversal in one query
  • MCP tools — drop-in tools for Claude Code, Cursor, Copilot, and more
  • Smart review — graph-based impact analysis with same-diff awareness, deletion coherence, and LLM reasoning
  • Local or cloud — runs locally with Docker, or connects to Qdrant Cloud + Neo4j Aura
  • Three packages — install what you need:
    • clewso — CLI with review, index, serve, and editor setup commands
    • clewso-ingestion — repo indexing pipeline with concurrent embeddings
    • clewso-core — shared types and embedding client

Quick start

uv tool install clewso       # or: pip install clewso
clewso init                   # configure stores
clewso index ./my-repo        # index your codebase
clewso setup-editor           # auto-detect and configure your editor
clewso review --staged        # graph-aware code review

See the installation guide for full setup instructions.