npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2026 – Pkg Stats / Ryan Hefner

@vitest-agent/mcp

v1.3.6

Published

Model Context Protocol server for vitest-agent. Exposes 53 tools for agent access to test data, TDD lifecycle, and session management.

Readme

@vitest-agent/mcp

npm License: MIT TypeScript 6.0

Part of the vitest-agent ecosystem. Most users want @vitest-agent/plugin, which pulls this package in automatically. Install @vitest-agent/mcp directly only if you run the MCP server standalone.

The vitest-agent-mcp MCP server bin. Exposes action-keyed tools over stdio that give LLM agents structured access to test data, coverage, history, failure signatures, TDD lifecycle state and more. Also surfaces six framing-only prompts.

Features

  • 29 action-keyed tools — per-CRUD families collapse into single tools dispatching on an action discriminator; covers test_status, test_overview, test_coverage, test_errors, run_tests, note, hypothesis, tdd_task, tdd_goal, tdd_behavior and more
  • Six framing promptstriage, why-flaky, regression-since-pass, explain-failure, tdd-resume, wrapup
  • Idempotency middlewaretdd_task, tdd_goal, tdd_behavior and hypothesis create-actions are idempotent on derived keys

Install

npm install --save-dev @vitest-agent/mcp
# or
pnpm add -D @vitest-agent/mcp

@vitest-agent/mcp is a regular dependency of @vitest-agent/plugin and installs with it automatically.

Quick start

npx vitest-agent-mcp
# starts the MCP server over stdio
# example output (varies by environment)

The server reads the SQLite database written by AgentPlugin via the same XDG-derived path, so a single test run populates data for all tools.

Documentation

MCP reference and tool catalog at vitest-agent.dev/mcp.

License

MIT