Evaluating npm Packages with Claude Code

Claude Code helps you write and refactor JavaScript and TypeScript, but when it comes to picking which packages to use, it’s working from training data. Download trends shift, maintainers change, and new versions land every week. AgentPatch’s npm-package-stats tool gives Claude Code access to live registry data so it can make current recommendations.

Why This Matters

You’re mid-session, about to add a dependency, and you want to know: is this package still actively maintained? How many people download it? When was the last release? These are simple questions, but answering them usually means switching to a browser and checking npmjs.com.

With npm-package-stats connected, Claude Code can answer these questions inline. It pulls weekly downloads, latest version info, publish dates, license, and maintainer details for any npm package. The data comes from the registry directly, so it’s always current.

Setup

The AgentPatch CLI is designed for AI agents to use via shell access. Install it, and your agent can discover and invoke any tool on the marketplace.

Install (zero dependencies, Python 3.10+):

pip install agentpatch

Set your API key:

export AGENTPATCH_API_KEY=your_api_key

Example commands your agent will use:

ap search "web search"
ap run google-search --input '{"query": "test"}'

Get your API key from the AgentPatch dashboard.

Install the AgentPatch skill — it teaches Claude Code when to use AgentPatch and how to use the CLI:

/plugin marketplace add fullthom/agentpatch-claude-skill
/plugin install agentpatch@agentpatch

MCP Server (Alternative)

If you prefer raw MCP tool access instead of the skill:

claude mcp add -s user --transport http agentpatch https://agentpatch.ai/mcp \
  --header "Authorization: Bearer YOUR_API_KEY"

Replace YOUR_API_KEY with your actual key from the AgentPatch dashboard.

Example

You’re refactoring a Node.js API and considering switching from express to fastify:

“What are the npm stats for express and fastify? I want to know if fastify is mature enough for production.”

Claude Code checks both:

Fetching npm stats for express...
Fetching npm stats for fastify...

express:
- Weekly downloads: 34.2M
- Latest version: 5.1.0 (published 1 week ago)
- License: MIT
- Maintainers: 5

fastify:
- Weekly downloads: 4.8M
- Latest version: 5.2.1 (published 5 days ago)
- License: MIT
- Maintainers: 8

Express still dominates in raw downloads, but Fastify has strong adoption at nearly
5M weekly downloads. Fastify actually has more listed maintainers and a slightly more
recent release. Both are production-ready. Fastify's advantage is performance — it
benchmarks 2-3x faster for JSON serialization. Express's advantage is ecosystem size
and the amount of existing middleware.

Claude Code combined the live stats with its own knowledge about the frameworks to give you a useful answer. You didn’t have to leave the terminal or cross-reference multiple sources manually.

Wrapping Up

Adding AgentPatch to Claude Code gives it access to live npm registry data during any session. It’s one of many tools on the marketplace — the same connection also exposes GitHub stats, search, and more. Explore what’s available at agentpatch.ai.

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