Mastercard Developers Agent Toolkit (github.com)

Mastercard released the Developers Agent Toolkit, a Model Context Protocol (MCP)–based package that lets agent frameworks programmatically discover and consume services and integration docs from the Mastercard Developers platform. The toolkit can run as a standalone MCP server (npx -y @mastercard/developers-mcp) or be embedded as a TypeScript/JavaScript library (npm install --save @mastercard/developers-agent-toolkit). It exposes agent-facing operations like get-services-list, get-documentation, get-documentation-section-content, get-documentation-page, get-oauth10a-integration-guide, get-openfinance-integration-guide, get-api-operation-list, and get-api-operation-details, returning metadata, doc content, API operations, parameter definitions, and request/response schemas. It requires Node 18+ and includes example usage with the MCP StdioServerTransport for connecting agents. For the AI/ML community this is significant because it standardizes how autonomous agents and tool-using LLMs discover and reason about financial APIs and integration flows. By providing machine-readable documentation, OAuth and Open Finance guides, and detailed API operation schemas via MCP, the toolkit enables agents to plan, validate and execute API calls more reliably, speeding integration work and reducing brittle hard-coding of endpoints. MCP compatibility improves interoperability across agent frameworks, and the MIT license plus open-source repo lowers friction for adoption, extension, and contribution.