Web server middleware for Dart
C-Rank Grade: A (Welcoming) - 58/100
External PR Merge Rate: 79%
Response Time: 8h
First Timer Success: 50%
dart-lang/shelf has a recorded first-timer success rate of 50.0%. Repositories ranked A typically provide actionable feedback during code reviews and actively nurture new community contributors.
Maintainers in dart-lang/shelf respond to incoming external pull requests in approximately 7.7 hours on average. Keeping PRs focused on single tasks and ensuring tests pass helps maintainers review faster.
The C-Rank™ system evaluates GitHub projects on a 0–100 scale using real data: PR merge rates, review turnaround time, active maintainer presence, and first-time contributor success. A score of 58.1 places dart-lang/shelf in the A tier.
The external contributor pull request merge rate for dart-lang/shelf is 79.2%, based on public PR activity from non-core contributors.
dart-lang/shelf currently has 1 active issue(s) tagged with beginner-friendly labels like "good first issue", "beginner", or "up-for-grabs".
Balanced & professional review environment in dart-lang/shelf. Maintains strict focus on technical quality and test standards.
Average Response Latency
Tracks hours until a maintainer leaves a review, comment, or PR response.
External Acceptance Rate
Percentage of community pull requests successfully merged into main.
First PR Conversion
Rate at which developers submitting their first repository PR succeed.
Show contributors that your repository actively reviews and merges external pull requests.
[](https://getmerged.abhishekco.de/dart-lang/shelf?utm_source=github&utm_medium=badge)
Historical health & responsiveness evolution
External PR acceptance
First PR success rate
50% receive response in
90% receive response in
Maintainer review activity heatmap & prime window prediction
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Detected: UTC
Maintainers are most responsive around 18:00 UTC (18:00 UTC in your timezone). Recommended submission window is Monday - Wednesday from 16:00 to 20:00 UTC (16:00 - 20:00 UTC local).
Limited recent maintainer review activity recorded for this repository. Prediction based on heuristic baseline.
Maintainer Strategy: Maintainer Sweet Spot: PRs under 150 lines merge in ~24 hours (94% approval). Large PRs (>500 lines) take ~178 hours (34% approval). Keep your diff compact for rapid review.
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We don't need it and it's not maintained by the dart team. I technically maintain http_methods, but let's avoid dependencies outside what is maintained by the dart team. This would also allow us to use shelf_router in the Dart SDK.
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When evaluating whether to contribute to dart-lang/shelf, response velocity and maintainer engagement are crucial. GetMerged continuously tracks pull request trajectories, first-comment latency, and code review rounds to help developers avoid submitting pull requests to backlogged repositories.
Currently, maintainers of dart-lang/shelf acknowledge new external contributions in approximately 7 hours. Out of all submitted pull requests from non-core authors in the last 180-day window, 79.2% were successfully merged into the primary branch.
dart-lang/shelf has a recorded first-timer success rate of 50.0%. Repositories ranked Welcoming typically provide actionable feedback during code reviews and actively nurture new community contributors.
The initial maintainer response time averages ~7 hours. Keeping PRs scoped to single concerns and ensuring CI checks succeed will optimize review turnaround.
The C-Rank™ index scores repositories on a 0 to 100 scale using an objective formula: external PR merge rates, initial response speed, active maintainer count, and first-time contributor retention. A score of 58.1 places dart-lang/shelf in the Welcoming tier.
The external pull request merge rate is 79.2%. GetMerged isolates non-core community contributions so external developers get an accurate benchmark of PR acceptance probability.
Yes, dart-lang/shelf currently has 1 active issue(s) tagged with beginner-friendly labels. You can inspect these directly from the repository issues tab.
All metrics displayed for dart-lang/shelf are automatically retrieved via the public GitHub API and recalculated daily. Insider pull requests submitted by repository owners or organization members are excluded from merge rate calculations to preserve objective external contributor statistics.