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What you can do with Jevgrep

Jevgrep is a TypeScript CLI (`jg`) that answers repository questions by returning relevant files, reading leads, and verbatim source excerpts for coding agents, using Jev to judge relevance.

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dzhng/jevgrep on GitHub

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What do you want to do?

3 use cases

  • Find the code behind a behavior before an agent edits it

    Ask a repository question and get files, leads, and source excerpts to start an unfamiliar change.

    View prompt
    Use the jevgrep skill in this repository to run `jg` with the question "<question about the behavior>" against <target path>. Report the files, line references, and source excerpts it returns, and confirm each cited file exists before you propose any edit.

  • Locate the tests that cover a specific behavior

    Ask which tests exercise a behavior so an agent can run or extend the right suite.

    View prompt
    In the repository at <target path>, run `jg` with the question "Which tests cover <behavior>?" and list each returned test file with its line references. Verify that each listed file exists and contains the test before you run the suite.

  • Check which files a search will send before running it

    Count the files under a root and exclude paths so only intended source reaches the provider.

    View prompt
    For the repository at <target path>, run `jg files <target path>` and summarize the file counts by top-level directory. Then propose `--exclude` patterns for generated or sensitive paths and confirm the counts drop before any search is run.

How to use Jevgrep

  1. Check you have what it needs: Node.js 22+ on macOS, Linux, or Windows; An API key for Vercel AI Gateway, TypeSafe, OpenRouter, OpenCode Zen, or a custom TypeSafe-compatible endpoint; A local checkout of the repository you want to search.
  2. Open dzhng/jevgrep on GitHub and read the README and license.
  3. Run npm install -g @dzhng/jevgrep to install the CLI.
  4. Run jg auth and choose your provider and key.
  5. Run jg skill from the project where your agent works.
  6. Run jg "How are telemetry events recorded and sent?" ./my-project with your own question and path.

These steps come from our top use case, Find the code behind a behavior before an agent edits it, which also has a copy-paste agent prompt.

Jevgrep alternatives · Best AI repos for Software and DevOps

About this repo

  • Who it is forDevelopers and coding-agent users who need to find where behavior lives in an unfamiliar codebase before an agent edits it.
  • Why it is hot
  • LanguageTypeScript
  • Sourcegithub.com/dzhng/jevgrep · Back to Hot repos

Requirements

  • Node.js 22+ on macOS, Linux, or Windows
  • An API key for Vercel AI Gateway, TypeSafe, OpenRouter, OpenCode Zen, or a custom TypeSafe-compatible endpoint
  • A local checkout of the repository you want to search
  • A coding agent such as Claude Code or Codex to run the installed skill
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Questions about Jevgrep

What is Jevgrep?

Jevgrep is a TypeScript CLI (`jg`) that answers repository questions by returning relevant files, reading leads, and verbatim source excerpts for coding agents, using Jev to judge relevance. It is an open-source project on GitHub: https://github.com/dzhng/jevgrep.

Who is Jevgrep for?

Developers and coding-agent users who need to find where behavior lives in an unfamiliar codebase before an agent edits it.

What can I do with Jevgrep?

3 use cases so far, for example: Find the code behind a behavior before an agent edits it; Locate the tests that cover a specific behavior; Check which files a search will send before running it. Each has steps and a copy-paste agent prompt.

What do I need to run Jevgrep?

Node.js 22+ on macOS, Linux, or Windows; An API key for Vercel AI Gateway, TypeSafe, OpenRouter, OpenCode Zen, or a custom TypeSafe-compatible endpoint; A local checkout of the repository you want to search; A coding agent such as Claude Code or Codex to run the installed skill.

What are alternatives to Jevgrep?

Other hot AI repos in Software and DevOps: Harness2, iFixAi, Orca, Diagram Design, AI Memory.

Is Jevgrep safe to run?

Deduped does not own, audit or vouch for it. Read the README and license, run it on your own systems first and review every command before you run it.