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 🙏

© 2025 – Pkg Stats / Ryan Hefner

@mastercard/developers-agent-toolkit

v0.1.3

Published

Agent Toolkit for Mastercard Developers Platform

Readme

Mastercard Agent Toolkit - TypeScript

The Mastercard Developers Agent Toolkit allows popular agent frameworks (currently Model Context Protocol - MCP) to integrate with Mastercard Developers for service discovery and integration guides.

Installation

npm install --save @mastercard/developers-agent-toolkit

Requirements

  • Node 18+

Usage

You can optionally specify service or apiSpecification as part of the configuration.

  • service: URL of the documentation of a service that you want the MCP to focus on e.g. https://developer.mastercard.com/mdes-customer-service/documentation
  • apiSpecification: URL of the API specification that you want the MCP tools to focus on e.g. https://static.developer.mastercard.com/content/match/swagger/match-pro.yaml. You can get the link from Download Spec button in the API Reference page of service. NOTE: This will override any value provided in service configuration.

If you specify service or api-specification then the get-services-list tool will be disabled.

import { MastercardDevelopersAgentToolkit } from '@mastercard/developers-agent-toolkit/mcp';
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';

const server = new MastercardDevelopersAgentToolkit({
  configuration: {
    service: 'https://developer.mastercard.com/open-finance-us/documentation',
  },
});

async function main() {
  const transport = new StdioServerTransport();
  await server.connect(transport);
  console.error('Mastercard Developers MCP Server running on stdio');
}

main().catch((error) => {
  console.error('Fatal error in main():', error);
  process.exit(1);
});

References