quicktype lets agents understand JSON as humans do—by inferring its high-level shape and purpose. The more JSON you feed an LLM, the more confused the LLM becomes; the more JSON you give to quicktype, the better quicktype understands it.
Given JSON and a target language, quicktype infers the data's type, and returns type definitions (e.g. schema, classes, structs, interfaces) and serializers in the target language. It detects enums, identifies dates, distinguishes numeric types, unifies equivalent and near-equivalent structures, adroitly names nested types, determines nullable vs non-nullable properties, discovers objects that were meant to be maps, preserves heterogeneous properties as union types, and more.
quicktype has written billions of lines of code that better understand data, and can help your agent do the same.
claude mcp add \
--transport http \
quicktype \
https://mcp.quicktype.io/mcp
To use this MCP server with other MCP clients, add the following URL to your configuration:
https://mcp.quicktype.io/mcp
Try quicktype in your browser at app.quicktype.io