An MCP server for interacting with PayPal Braintree payment processing services. It implements the Model Context Protocol (MCP) to give AI assistant models direct, structured access to Braintree's payment processing capabilities via GraphQL API. The server supports two transport modes: a STDIO transport suitable for Claude Desktop and other MCP clients that support stdio, where each client session runs in a separate process and the server terminates when the client disconnects; and a Server-Sent Events (SSE) transport that runs as a standalone web server, handling multiple persistent client connections and defaults to 127.0.0.1:8001 (configurable). Configuration is via a .env file containing Braintree credentials (BRAINTREE_MERCHANT_ID, BRAINTREE_PUBLIC_KEY, BRAINTREE_PRIVATE_KEY) and environment (sandbox or production). The MCP tools exposed include braintree_ping (connectivity test) and braintree_execute_graphql (execute arbitrary GraphQL queries). Examples cover common operations such as fetching a Customer and creating a Transaction. The server enables AI systems to fetch transactions, create payments, and manage customer data through MCP tools, facilitating secure automation of payment workflows within AI-assisted processes.