perch: semantic code linting with Jev

lakeday-org/perch

Jev applicationCode reference

perch uses Jev to inspect code and supports natural-language rules with ranked findings and follow-up checks.

MIT · JavaScript · updated 2026-09-24 · 310 ★ · Evidence checked Sep 30, 2026

Purpose and audience

Define semantic expectations in perch.yaml, scoped to files or methods, and inspect the resulting code findings.

The System One client asks typed questions about supplied state, defaults to jev-latest and calls TypeSafe's API.

Run a scan, inspect ranked issues, then recheck an issue after a change; setup commands add instructions for supported coding assistants.

Scans and checks require PERCH_API_KEY. A follow-up perch check does not save its findings into the recorded results.

Evidence checked: Sep 30, 2026

Repository description

Semantic code linting with Jev

Stars measure the whole repository, including work unrelated to Jev.

Code reference records the linked documentation or source. JevHunt has not independently run or benchmarked this project.

Evidence commit: eaa137bf229ba5947740ea0c82820bd5517b17fb

Discovered through: typesafe-field-guide.