The Zone Score

A transparent, data-driven approach to evaluating MCP server quality

Building Trust Through Transparency

The Zone Score is our commitment to helping developers make informed decisions. We believe that quality metrics should be open, understandable, and based on objective data that matters to real-world usage.

Every server in our directory receives a Zone Score from 0-100, calculated using publicly available data from [GitHub](https://github.com), [NPM](https://www.npmjs.com), and other sources. We continuously refine our methodology based on community feedback and industry best practices inspired by [NPM's scoring methodology](https://docs.npmjs.com/searching-for-and-choosing-packages-to-download#package-search-ranking-criteria).

How We Calculate the Zone Score

Popularity (30%)

Measures community adoption and interest

  • GitHub Stars - Community endorsement and bookmarking
  • GitHub Forks - Active development and customization
  • NPM Downloads - Real-world usage and adoptionComing Soon

Quality (40%)

Evaluates code quality and developer experience

  • Documentation - README quality and completeness per GitHub standards
  • License - Open source license availability
  • Test Coverage - Automated testing presenceComing Soon
  • TypeScript Support - Type safety and IDE support via TypeScriptComing Soon

Maintenance (30%)

Tracks ongoing development and support

  • Recent Activity - Commits in the last 30 days
  • Repository Status - Not archived or abandoned
  • Issue Resolution - Open issues and response time
  • Contributor Activity - Number of active contributors

Example Calculation

Let's walk through how we calculate the Zone Score for a typical server:

Sample Server Metrics:

Popularity Metrics

  • • 1,250 GitHub stars
  • • 89 forks
  • • 5,000 weekly downloads

Quality Metrics

  • • Has README ✓
  • • MIT License ✓
  • • 85% test coverage
  • • TypeScript ✓

Maintenance Metrics

  • • Last commit: 3 days ago
  • • Not archived ✓
  • • 12 open issues
  • • 8 contributors

Score Calculation:

Popularity Score: 85/100 × 30%= 25.5
Quality Score: 90/100 × 40%= 36.0
Maintenance Score: 78/100 × 30%= 23.4
Total Zone Score84.9

Frequently Asked Questions

How often are scores updated?

We update Zone Scores daily to reflect the latest metrics from [GitHub API](https://docs.github.com/en/rest) and other sources. This ensures that active development and community engagement are accurately represented.

Can I improve my server's Zone Score?

Absolutely! Focus on maintaining your repository, responding to issues, improving documentation, and fostering community engagement. Every positive action contributes to a better score.

Why do some metrics show "Coming Soon"?

We're continuously expanding our data sources. Currently, we integrate with GitHub for most metrics, with NPM and other platforms coming soon to provide even more comprehensive scoring.

Is the scoring algorithm open source?

While our methodology is fully transparent and inspired by industry standards like [NPM's package ranking](https://docs.npmjs.com/searching-for-and-choosing-packages-to-download#package-search-ranking-criteria), the implementation details are proprietary to prevent gaming. We believe this balance ensures fairness while maintaining score integrity.

Have Questions or Feedback?

We're committed to making the Zone Score as fair and useful as possible.

Read Our Blog