PackageLens MCP: a server exposing tools to search package registries (npm today) and fetch READMEs.
PackageLens MCP: a server exposing tools to search package registries (npm today) and fetch READMEs.
packagelens-mcp lets your coding agent (such as Claude, Cursor, Copilot, Gemini or Codex) search package registries across multiple ecosystems (npm, PyPI, RubyGems, Crates.io, Packagist, Hex) and fetch package context (README, downloads, GitHub info, usage snippets). It features smart ecosystem auto-detection, so your AI can find packages without needing to specify which ecosystem to search. It acts as a Model‑Context‑Protocol (MCP) server, giving your AI assistant a structured way to discover libraries and integrate them quickly.
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Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.
| Tool | What it does |
|---|---|
| smart_package_info | Get detailed package info |
| Args | items[] with {ecosystem, name} objects |
| Example | Compare axios (npm), requests (PyPI), httparty (RubyGems) |
| smart_get_readme | Fetch package README |
| smart_get_usage_snippet | Extract code examples from README |
| smart_get_versions | List package versions |
| smart_get_dependencies | Get package dependencies |
| smart_get_downloads | Get download statistics |
| compare_packages | Compare packages across ecosystems |
{
"mcpServers": {
"packagelens": {
"command": "npx",
"args": [
"-y",
"packagelens-mcp@latest"
]
}
}
}From the project documentation. Replace placeholders and example paths before connecting.
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