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jgrep
grep, but the pattern is a description. Filters lines by meaning with TypeSafe's Jev decision model: ~200 ms and a thousandth of a cent per line.
140 ★ on GitHub
What it is
console $ tail -f app.log | jgrep "a user is getting frustrated" user 12: this is the third time checkout has failed, I am done with this app user 77: WHY does it log me out every five minutes??
Getting started
From the README:
uv tool install jev-grep # the command it installs is jgrep
uv tool upgrade jev-grep # upgrade an existing installationWhere the decision sits
jgrep calls the hosted decision API rather than running its own weights. That keeps the project small and means its behaviour moves whenever the vendor ships a new model version. It also means an API key and a network round trip sit in the path of every decision.
Models it references: Jev.
How active it is
Created 2026-09-18, last pushed 2026-10-17, 140 stars and 5 forks when we read it on 2026-11-02. Everything in this category is weeks old at most, so a stale push date means something different here than it would on a mature project. Check the repository before you depend on it.
Find out what your data actually supports
We turn your historical decisions into a frozen test set, then tell you which model, which threshold, and how much of it you can safely automate.