jevgrep: an open-source CLI that lets coding agents find code by asking, cutting cost 40% on SWE-bench
multiply_matrix · x · 2026-09-27
dzhng open-sourced jevgrep, a CLI for coding agents that claims a verified 40% cost reduction on SWE-bench.
- How it works: coding agents burn many steps locating relevant files on unfamiliar tasks. Instead, the agent asks a repo question in natural language (e.g. "How are telemetry events recorded and sent?"), and jg uses Jev to judge relevance across folders, files, and declarations, returning relevant files, reading leads, and verbatim source excerpts in one stdout response.
- Usage: npm install -g @dzhng/jevgrep → jg auth → jg skill (teaches your agent to use it) → jg "question" ./project. Needs Node.js 22+, macOS/Linux, and a key for Vercel AI Gateway, TypeSafe, or OpenRouter — no separate Python, Bun, or ripgrep.
- Positioning: turns context-finding from exploratory file-hopping into one structured query, leaving implementation and testing to the agent.
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