foxglove/mcap
Grade a repo

0

/ 100

GradeA

Polished and well engineered. Punching above its star count.

MCAP is a modular, performant, and serialization-agnostic container file format, useful for pub/sub and robotics applications.

Documentation85
Engineering99
Health86
Rust986MITtoday

Documentation

85

Contributing guide5pt25

Contributing guidance is in the README, not a dedicated CONTRIBUTING.md (−20 pts).

→ Moving it to a CONTRIBUTING.md makes it easier to find and keeps the README focused. A dedicated file earns +47 pts base.

Install and run instructions9pt90

README documents how to install the project.

README12pt100

README is present.

License6pt100

Licensed under MIT.

Engineering

99

Reproducibility6pt92

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

Tests18pt100

Test files detected (cpp/test).

CI/CD14pt100

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

Linting and formatting5pt100

Linter or formatter configured (.prettierrc.yml).

Issue and PR templates6pt100

Issue or PR templates present.

Project health

86

Dependency manifest6pt55

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

  • -
    Commits (30d / 90d)
  • 215
    Forks
  • 101
    Releaseslatest 4y ago

Community

  • -
    Community health
  • -
    authors own >50% of commits
  • 986
    Watchers

Responsiveness

  • <1h
    Median issue response
  • <1h
    Median PR merge time
  • 34
    Open issues
Repository files30 root entries
  • .github
    Good: CI is configured (.github/workflows/ci.yml).
    Good: Dependabot configured for github-actions.
    Good: Issue or PR templates present.
  • .vscode
  • cpp
    Good: Test files detected (cpp/test).
  • go
  • python
    Good: Environment pinned via python/examples/ros2/Dockerfile.
  • rust
  • swift
  • testdata
  • tests
  • typescript
  • website
  • .gitattributes
  • .gitignore
    Good: .gitignore present.
  • .prettierignore
  • .prettierrc.yml
    Good: Linter or formatter configured (.prettierrc.yml).
  • .swiftformat
  • .swiftlint.yml
  • .typos.toml
  • .yarnrc.yml
  • AGENTS.md
  • Cargo.lock
    Good: Lockfile present (Cargo.lock). Installs are reproducible.
  • Cargo.toml
    Good: Dependency manifest found (Cargo.toml).
  • cspell.config.yaml
  • LICENSE
    Good: Licensed under MIT.
  • package.json
  • Package.resolved
  • Package.swift
  • README.md
    Good: README is present.
    Good: README is well structured with multiple sections.
    Good: README includes screenshots or visuals. Great for first impressions.
    Good: README has code examples.
    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.
  • RELEASING.md
  • yarn.lock