Open-Sourcing doma: A Lightweight BM25 Search Tool to Stop AI from Abusing grep

HornyNarwahl · reddit · 2026-08-02

To solve the issue of coding assistants like Claude blindly using grep and missing targets, a developer released doma (DOcument MAtcher).

Core Features: Provides fast, semantically relevant document and code search based on the BM25 algorithm, significantly reducing search misses.
Lightweight Architecture: Written in Odin as a single binary with no external dependencies. It avoids heavy Node.js environments or complex MCP servers, mitigating supply chain vulnerabilities.
Usage: Recommends adding doma instructions to your project's CLAUDE.md to guide the AI.

The author also built a companion tool, doyo, for document acquisition, relying heavily on Claude Code throughout the development process.

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