MCP Quality Index

Daily-updated quality scores for 12,653+ MCP server repositories. Machine-readable JSON. No auth required.

What is this?

Every MCP registry today is a flat catalog — name, description, maybe a link. None of them tell you whether a server is maintained, adopted, or safe to depend on.

This dataset scores every MCP-domain repository on GitHub across four dimensions:

Component	Range	What it measures
Maintenance	0-25	Commit activity, push recency, archived status
Adoption	0-25	Stars, package downloads, reverse dependents
Maturity	0-25	License, published package (PyPI/npm), repo age
Community	0-25	Forks, fork-to-star ratio

The composite quality score (0-100) classifies each server into a tier:

Tier	Score	Count	Description
Verified	70+	53	Strong across all dimensions
Established	50-69	680	Solid but gaps in one area
Emerging	30-49	3,078	Early-stage, some traction
Experimental	<30	8,842	Minimal signals

Risk flags are computed per repo: archived, no_license, stale_6m, no_package, no_dependents.

See METHODOLOGY.md for the full scoring model, and schema/ for field-level documentation.

Datasets

All files are in data/:

File	Records	Description
mcp-scores.json	12,653	Quality scores with component breakdown and risk flags
mcp-repos.json	12,512	All active MCP repos with GitHub + package metrics
projects.json	441	Tracked AI projects with traction scores, lifecycle stages, velocity
metadata.json	—	Export timestamp, record counts, schema version

Usage

Fetch the raw JSON directly:

curl -s https://raw.githubusercontent.com/grahamrowe82/mcp-quality-index/main/data/mcp-scores.json | jq '.[0]'

{
  "full_name": "n8n-io/n8n",
  "quality_score": 88,
  "quality_tier": "verified",
  "maintenance_score": 25,
  "adoption_score": 20,
  "maturity_score": 18,
  "community_score": 25,
  "risk_flags": [],
  "stars": 72841,
  "downloads_monthly": 1547893,
  "commits_30d": 289
}

Filter verified servers with jq:

curl -s https://raw.githubusercontent.com/grahamrowe82/mcp-quality-index/main/data/mcp-scores.json \
  | jq '[.[] | select(.quality_tier == "verified")] | length'

Live API

The same data is available via the PT-Edge API (no auth required):

GET https://mcp.phasetransitions.ai/api/v1/datasets/mcp-scores
GET https://mcp.phasetransitions.ai/api/v1/datasets/mcp-scores?quality_tier=verified
GET https://mcp.phasetransitions.ai/api/v1/datasets/mcp-scores?subcategory=gateway
GET https://mcp.phasetransitions.ai/api/v1/datasets/mcp-repos
GET https://mcp.phasetransitions.ai/api/v1/datasets/projects

Update frequency

Data is refreshed daily from PT-Edge, which tracks 166,000+ AI repositories across GitHub, PyPI, npm, Docker Hub, HuggingFace, and Hacker News.

License

Data: CC-BY-4.0. Attribution: PT-Edge (https://github.com/grahamrowe82/pt-edge).