API JSON WorkbenchLocal-first tools for API data
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API JSON Workbench

API JSON Workbench is a focused set of local-first JSON tools for API developers. It helps you format, compare, transform, infer schema, and generate mock data from JSON payloads directly in your browser.

Why this exists

API work often starts with a raw response payload. This workspace keeps the common follow-up actions close: format the response, compare versions, generate TypeScript types, infer JSON Schema, and create mock data.

Current tools

  • JSON Formatter
  • JSON Diff
  • JSON to TypeScript
  • JSON Schema Generator
  • Mock Data Generator