prefecthq/prefect
Grade a repo

92

/ 100

GradeA

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

Top 6% of 5,156 graded repos

Prefect is a workflow orchestration framework for building resilient data pipelines in Python.

Documentation94
Engineering96
Health94
Python22,762Apache-2.029d ago

Outstanding. A score of 95/100 puts this repo in a very small tier of truly well-engineered projects.

Top fixes

Highest-impact changes first, ranked by point weight

6 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
    Install and run instructions9pt

    Add a .env.example listing all required environment variables so contributors know what to set up.

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Scorecard

Every check, grouped by category and sorted worst-first

Documentation

94

Contributing guide5pt77

CONTRIBUTING guide found.

Install and run instructions9pt90

README documents how to install the project.

README12pt100

README is present.

License6pt100

Licensed under Apache-2.0.

Engineering

96

CI/CD14pt85

CI is configured (.github/workflows/api-compatibility-tests.yaml).

Tests18pt100

Test files detected (docs/conftest.py).

Linting and formatting5pt100

Linter or formatter configured (ui-v2/biome.json).

Reproducibility6pt100

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

Issue and PR templates6pt100

Issue or PR templates present.

Project health

94

Housekeeping3pt60

.gitignore present.

Dependency manifest6pt100

Dependency manifest found (pyproject.toml).

Repository metadata5pt100

Repository has a description.

Activity5pt100

Actively maintained (pushed within the last month).

Repository health signals

Activity, community, and responsiveness at scan time

Activity

  • 164 / 818
    Commits (30d / 90d)
  • 2,361
    Forks
  • 852
    Releaseslatest 7y ago

Community

  • 100% - Good
    Community health
  • 7 bus factor
    authors own >50% of commits
  • 22,762
    Watchers

Responsiveness

  • <1h
    Median issue response
  • 2h
    Median PR merge time
  • 816
    Open issues
Repository files34 root entries
  • .claude
  • .github
    Good: CONTRIBUTING guide found.
    Issue: CONTRIBUTING guide contents could not be read (−28 pts vs a readable file).Fix: Move the file to the repo root or docs/CONTRIBUTING.md so its setup, style, test, and PR sections can be graded.
    Good: CI is configured (.github/workflows/api-compatibility-tests.yaml).
    Good: Dependabot covers 5 ecosystems (pip, npm, github-actions, docker, uv). Dependencies stay current.
    Good: Issue or PR templates present.
  • benches
  • client
  • docs
    Good: Test files detected (docs/conftest.py).
  • examples
  • integration-tests
  • load_testing
  • plans
  • schemas
  • scripts
  • src
  • tests
  • tools
  • ui
  • ui-v2
    Good: Linter or formatter configured (ui-v2/biome.json).
    Issue: Build artifacts or local files may be committed (ui-v2/.env) (−40 pts).Fix: Remove them and add to .gitignore.
  • .dockerignore
  • .gitignore
    Good: .gitignore present.
  • .gitmodules
  • .nvmrc
  • .pre-commit-config.yaml
  • .prefectignore
  • AGENTS.md
  • CODE_OF_CONDUCT.md
    Good: Code of conduct present.
  • compat-tests
  • Dockerfile
    Good: Environment pinned via Dockerfile.
  • Dockerfile.sqlite-builder
  • hatch_build.py
  • justfile
  • LICENSE
    Good: Licensed under Apache-2.0.
  • pyproject.toml
    Good: Dependency manifest found (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.
    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.
  • SECURITY.md
    Good: Security policy present.
  • uv.lock
    Good: Lockfile present (uv.lock). Installs are reproducible.
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