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Developers Agent Toolkit

Developers Agent Toolkit is a TypeScript toolkit that connects agent frameworks, currently through the Model Context Protocol (MCP), to Mastercard Developers resources. Its tools retrieve service listings, documentation and integration guides, and API operation information. It can run as a standalone MCP server or be integrated as a library in TypeScript and JavaScript projects.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Developers Agent Toolkit — OpenViST project profile in MCP & Tooling.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when an MCP-enabled agent needs structured discovery of Mastercard services or needs to retrieve integration documentation and API operation details during a development workflow.

Who it is for

  • Developers building MCP-enabled agent workflows around Mastercard Developers resources.
  • Teams that want agents to retrieve Mastercard service documentation and API operation details.

Documented uses

  • Discover Mastercard Developers products and services, including their titles, descriptions and service IDs.
  • Retrieve documentation overviews, section content and full documentation pages.
  • Get OAuth 1.0a, OAuth 2.0 and Open Finance integration guides.
  • List API operations and inspect operation parameters, request and response schemas, and technical details.
Before you choose

Requirements & limits

The repository is public and specifies the MIT license. The package setup instructions require Node 18 or later.

  • MCP is the currently supported agent framework integration described by the project.
  • Choose the standalone server for MCP client use, or the library route for TypeScript/JavaScript integration.
  • The toolkit retrieves documentation and API details; it is not described as executing the underlying Mastercard API operations.
  • Curated marketplace plugin commands are subject to acceptance into the respective vendor registries; repository-based installation is also documented.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Install the toolkit as a TypeScript MCP server

Add the toolkit package to a Node project and connect its MCP server over standard input/output.

Before you start

  • Node 18 or later
  • A TypeScript or JavaScript project
  • The @modelcontextprotocol/sdk package for the shown stdio transport

Steps

  1. Install the package with npm install --save @mastercard/developers-agent-toolkit.

  2. Import MastercardDevelopersAgentToolkit from the package’s /mcp entry point.

  3. Create the toolkit server and a StdioServerTransport from the MCP SDK.

  4. Connect the server to the transport as shown in the repository example.

Expected outcome

A project configured to run the toolkit as an MCP server over stdio.

Guide limitations

  • The instructions cover package setup and server connection, not configuration of a particular MCP client.
  • No successful execution or client compatibility is asserted.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
15 October 2026
Original website title
Mastercard/developers-agent-toolkit · Official homepage title · retained in its source language
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