FastMCP: Building MCP Servers in Python

FastMCP is a Python framework for creating Model Context Protocol servers that connect AI assistants to enterprise data, APIs, databases, file systems, and internal tools through a standardized host-client-server architecture using JSON-RPC. It uses decorators, type hints, and docstrings to automatically produce tool schemas, validation, and documentation, while supporting synchronous or asynchronous functions, STDIO for local use, Streamable HTTP for remote deployments, and legacy SSE compatibility. The framework encourages focused tools, clear parameters, explicit errors, scoped data access, and integration with existing services, while production deployments require TLS, secret management, authentication, authorization, input validation, output filtering, monitoring, containerization, load balancing, and health checks. The text presents MintMCP Gateway as an optional enterprise governance layer that can wrap custom servers with OAuth, centralized access policies, audit logging, managed hosting, scaling, DLP controls, and monitoring, and describes its Agent Gateway and Agent Monitor offerings for governing persistent agents and identifying supported off-gateway MCP activity in tools such as Claude Code and Cursor.

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