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Package Intel MCP Server

Package Intel MCP Server

by BUZDOLAPCI
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Package Intel MCP Server

A Model Context Protocol (MCP) server for querying package registries (npm, PyPI, crates.io) to retrieve metadata about packages including versions, release cadence, and maintenance signals.

Features

  • Multi-Registry Support: Query npm, PyPI, and crates.io from a single interface

  • Package Summaries: Get comprehensive package metadata including version, license, and repository info

  • Release Timelines: Retrieve version history with release dates

  • Maintenance Signals: Analyze package health with automated scoring

Related MCP server: NPM Sentinel MCP

Installation

npm install
npm run build

Usage

As MCP Server (stdio)

npm start

As HTTP Server

npm run start:http
# Or with custom port
PORT=8080 npm run start:http

Claude Desktop Configuration

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json on macOS):

{
  "mcpServers": {
    "package-intel": {
      "command": "node",
      "args": ["/path/to/package-intel/dist/cli.js"]
    }
  }
}

Tools

package_summary

Get summary information about a package.

Parameters:

  • ecosystem (required): "npm" | "pypi" | "crates"

  • name (required): Package name

Example:

{
  "ecosystem": "npm",
  "name": "lodash"
}

Response:

{
  "ok": true,
  "data": {
    "name": "lodash",
    "version": "4.17.21",
    "description": "Lodash modular utilities.",
    "homepage": "https://lodash.com/",
    "repository": "https://github.com/lodash/lodash",
    "license": "MIT",
    "keywords": ["modules", "stdlib", "util"]
  },
  "meta": {
    "source": "https://registry.npmjs.org/lodash",
    "retrieved_at": "2024-01-15T10:30:00.000Z",
    "pagination": { "next_cursor": null },
    "warnings": []
  }
}

release_timeline

Get the release history of a package.

Parameters:

  • ecosystem (required): "npm" | "pypi" | "crates"

  • name (required): Package name

  • limit (optional): Maximum releases to return (default: 20, max: 100)

Example:

{
  "ecosystem": "pypi",
  "name": "requests",
  "limit": 5
}

Response:

{
  "ok": true,
  "data": {
    "package_name": "requests",
    "ecosystem": "pypi",
    "releases": [
      {
        "version": "2.31.0",
        "date": "2023-05-22T10:00:00.000Z",
        "is_prerelease": false
      },
      {
        "version": "2.30.0",
        "date": "2023-05-01T10:00:00.000Z",
        "is_prerelease": false
      }
    ],
    "total_versions": 87
  },
  "meta": {
    "source": "https://pypi.org/pypi/requests/json",
    "retrieved_at": "2024-01-15T10:30:00.000Z",
    "pagination": { "next_cursor": "5" },
    "warnings": []
  }
}

maintenance_signals

Analyze maintenance health signals for a package.

Parameters:

  • ecosystem (required): "npm" | "pypi" | "crates"

  • name (required): Package name

Example:

{
  "ecosystem": "crates",
  "name": "serde"
}

Response:

{
  "ok": true,
  "data": {
    "package_name": "serde",
    "ecosystem": "crates",
    "days_since_last_release": 45,
    "last_release_date": "2023-12-01T10:00:00.000Z",
    "releases_per_year": 12.5,
    "total_versions": 156,
    "is_deprecated": false,
    "maintenance_score": "good",
    "score_factors": {
      "recency": "good",
      "frequency": "good",
      "maturity": "good"
    }
  },
  "meta": {
    "source": "https://crates.io/api/v1/crates/serde",
    "retrieved_at": "2024-01-15T10:30:00.000Z",
    "pagination": { "next_cursor": null },
    "warnings": []
  }
}

Maintenance Score Calculation

The maintenance score is calculated based on three factors:

Recency (50% weight)

  • Good: Last release < 90 days ago

  • Fair: Last release < 365 days ago

  • Poor: Last release >= 365 days ago

Frequency (30% weight)

  • Good: >= 4 releases per year

  • Fair: >= 1 release per year

  • Poor: < 1 release per year

Maturity (20% weight)

  • Good: >= 10 total versions

  • Fair: >= 3 total versions

  • Poor: < 3 total versions

If a package is deprecated, the score is automatically set to "poor".

Error Handling

All tools return errors in a consistent envelope format:

{
  "ok": false,
  "error": {
    "code": "INVALID_INPUT",
    "message": "Package 'nonexistent' not found on npm",
    "details": {
      "package": "nonexistent",
      "ecosystem": "npm"
    }
  },
  "meta": {
    "retrieved_at": "2024-01-15T10:30:00.000Z"
  }
}

Error Codes

  • INVALID_INPUT: Invalid parameters or package not found

  • UPSTREAM_ERROR: Registry API returned an unexpected error

  • RATE_LIMITED: Registry rate limit exceeded

  • TIMEOUT: Request timed out

  • PARSE_ERROR: Failed to parse registry response

  • INTERNAL_ERROR: Unexpected server error

Configuration

Environment variables (see .env.example):

Variable

Default

Description

PORT

3000

HTTP server port

REQUEST_TIMEOUT

30000

Request timeout in ms

USER_AGENT

package-intel/0.1.0

User agent for registry requests

CACHE_TTL

300

Cache TTL in seconds

LOG_LEVEL

info

Log level: debug, info, warn, error

Development

# Install dependencies
npm install

# Build
npm run build

# Run tests
npm test

# Run tests in watch mode
npm run test:watch

# Type check
npm run typecheck

# Development mode (watch)
npm run dev

License

MIT

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

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