jj-vcs/jj
Grade a repo

92

/ 100

GradeA

A top-tier open source project. Docs, tests, and CI are all in excellent shape.

Top 7% of 5,156 graded repos

A Git-compatible VCS that is both simple and powerful

Documentation92
Engineering96
Health93
Rust29,806Apache-2.01mo ago

Top fixes

Highest-impact changes first, ranked by point weight

8 to address
  1. 1
    CI/CD14pt

    Add a lint step to catch style issues automatically.

  2. 2
    CI/CD14pt

    Add `tsc --noEmit`, `mypy`, or `cargo check` to catch type errors before they merge.

  3. 3
    CI/CD14pt

    Upload coverage to Codecov, Coveralls, or report it with `--coverage` flags.

  4. 4
    README12pt

    Show a quick-start snippet so contributors can see what using your project looks like.

Working through the fixes? Let every push regrade itself.

The free GitHub App rescans this repo on every push and posts the grade as a commit check, so the score climbs without coming back to rescan by hand.

Install the GitHub App

Scorecard

Every check, grouped by category and sorted worst-first

Documentation

92

README12pt85

README is present.

Install and run instructions9pt90

README documents how to install the project.

License6pt100

Licensed under Apache-2.0.

Contributing guide5pt100

Contributing guide is detailed and thorough.

Engineering

96

CI/CD14pt85

CI is configured (.github/workflows/ci.yml).

Tests18pt100

Test files detected (cli/tests).

Linting and formatting5pt100

Linter or formatter configured (.editorconfig).

Reproducibility6pt100

Lockfile present (Cargo.lock). Installs are reproducible.

Issue and PR templates6pt100

Issue or PR templates present.

Project health

93

Dependency manifest6pt79

Dependency manifest found (Cargo.toml).

Repository metadata5pt100

Repository has a description.

Activity5pt100

Actively maintained (pushed within the last month).

Housekeeping3pt100

.gitignore present.

Repository health signals

Activity, community, and responsiveness at scan time

Activity

  • 48 / 259
    Commits (30d / 90d)
  • 1,101
    Forks
  • 49
    Releaseslatest 3y ago

Community

  • 87% - Good
    Community health
  • 2 bus factor
    authors own >50% of commits
  • 29,806
    Watchers

Responsiveness

  • 11d 8h
    Median issue response
  • 9h
    Median PR merge time
  • 1,148
    Open issues
Repository files29 root entries
  • .cargo
  • .config
    Good: Environment pinned via .config/mise.toml.
  • .github
    Good: CI is configured (.github/workflows/ci.yml).
    Good: Dependabot covers 4 ecosystems (cargo, github-actions, nix, npm). Dependencies stay current.
    Good: Issue or PR templates present.
  • cli
    Good: Test files detected (cli/tests).
  • demos
  • docs
    Good: Contributing guide is detailed and thorough.
    Good: Contributing guide includes setup/install instructions.
    Good: Contributing guide describes code style expectations.
    Good: Contributing guide explains how to run tests.
    Good: Contributing guide describes the PR/review workflow.
    Good: Contributing guide includes code examples.
  • lib
  • web
  • .editorconfig
    Good: Linter or formatter configured (.editorconfig).
  • .envrc.recommended
  • .gitattributes
  • .gitignore
    Good: .gitignore present.
  • .watchmanconfig
  • AUTHORS
  • Cargo.lock
    Good: Lockfile present (Cargo.lock). Installs are reproducible.
  • Cargo.toml
    Good: Dependency manifest found (Cargo.toml).
  • CHANGELOG.md
  • default.nix
  • deny.toml
  • flake.lock
  • flake.nix
  • GOVERNANCE.md
  • LICENSE
    Good: Licensed under Apache-2.0.
  • mkdocs.yml
  • pyproject.toml
  • README.md
    Good: README is present.
    Good: README is well structured with multiple sections.
    Good: README includes screenshots or visuals. Great for first impressions.
    Issue: README has no code examples (−15 pts).Fix: Show a quick-start snippet so contributors can see what using your project looks like.
    Good: README links to a live demo or deployed app.
    Good: README includes status badges.
    Good: README documents how to install the project.
    Good: README documents how to run the project.
  • rustfmt.toml
  • SECURITY.md
    Good: Security policy present.
  • uv.lock
RepoGrade badge preview

Add this badge to your README

It updates automatically each time the repo is re-graded.

[![RepoGrade](https://www.repo-grade.com/api/badge/jj-vcs/jj)](https://www.repo-grade.com/report/jj-vcs/jj)

More graded Rust repos