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CommunityTools & Integrations15 starsVerified 2026-09-22

jgrep

A semantic grep CLI that chunks files or staged diffs into 5-60 line pieces, packs 16 chunks and 16 Jev Noul questions into one request, and prints file:line hits above a probability threshold with grep-style exit codes.

Category
Tools & Integrations
Published by
Community
Author
kyu1204
Added
2026-09-22
Tagscommunitytypescriptclisearchcoding-agent

Highlights

  • No index, embeddings, or LLM round-trips: a whole src/ tree searches in about 2 seconds for roughly a cent.
  • Packs 16 code chunks and 16 Noul questions into one request at $0.042 per million input tokens with output free.
  • Works on git diffs too, so rules written in English can gate CI; exit status is grep's (0 matched, 1 nothing, 2 error).
  • --tests selects affected test files in three layers; on a 142-file suite it chose 47 files and 536 cases versus 1,420 in the full run.
  • Also scores CSV/JSONL rows with Noul, Choice, and Score questions from a JSON file; jgrep init can install a Claude Code or Codex skill.

Quickstart

bash
npm i -g jevgrep
jgrep init
jgrep "catches an error and silently ignores it" src/
jgrep --diff origin/main "adds an HTTP endpoint that has no auth check"

Watch out

MIT-licensed. Needs Node.js and a TypeSafe API key; every chunk's text is sent to TypeSafe's API, chunks are judged in isolation so cross-file questions will not match, and accuracy is lower on non-English text.

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