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

@quitegoodproject/catchresolve-mcp

v1.1.0

Published

Sub-150ms Deterministic Corporate Email Permutation, Discrete SMTP Probing & Catch-All Identity Resolver in < 180 Tokens.

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Maintainers

barnsby.tarquinbarnsby.tarquin

Keywords

mcpmodel-context-protocolcatch-all-resolvercatchresolveemail-finderemail-permutationai-sdrclay-enrichmentcursor-mcpclaude-mcpquitegoodproject

Readme

⚡ CatchResolve (tokenmailbox.com)

Sub-150ms Corporate Email Permutation, Discrete SMTP Probing & Catch-All Identity Resolver
Model Context Protocol (MCP) Server for AI SDRs, Claude Desktop, Cursor IDE, and automated cold outreach.

License: MIT MCP Part of Quite Good Project

⚡ Capabilities

  • Discrete SMTP Socket Probes: Directly verifies if a corporate mailbox exists without sending an email.
  • Deterministic Permutation Engine: Tests {first}.{last}, {first}, {f}{last} against corporate MX routing.
  • Catch-All Canary Detection: Distinguishes true catch-all domains from discrete mailbox servers.
  • RFC-2601 Response Envelope: Returns verified deliverable mailbox in sub-150ms and < 180 tokens.

🚀 Quickstart

Claude Desktop & Cursor MCP Setup

🎁 Free Sandbox Bonus: Pass --email [email protected] in args to instantly double your free sandbox quota from 50 to 100 requests! Zero credit card required.

{
  "mcpServers": {
    "catchresolve": {
      "command": "npx",
      "args": ["-y", "@quitegoodproject/catchresolve-mcp", "--email", "[email protected]"]
    }
  }
}

Or run via CLI:

npx -y @quitegoodproject/catchresolve-mcp --email [email protected]

🏛️ Governance

Part of The Quite Good Project developer suite.