TL;DR - What is EDN? EDN (Extensible Data Notation) is a data format similar to JSON, but richer and more extensible. Think of it as "JSON with superpowers": Why EDN over JSON? More expressive types ...

Building an effective MCP application is harder than it looks. FastMCP handles all of it. Declare a tool with a Python function, and the schema, validation, and documentation are generated ...