API Mock Response Generator
API & BackendGenerate realistic fake JSON responses from a simple field schema.
Runs entirely in your browser โ nothing is uploaded
Features
- Field types for names, emails, dates, UUIDs, numbers, booleans and enums.
- Generate any number of records, as an array or a paginated envelope.
- Nested objects and arrays supported.
- Deterministic output from a seed, so fixtures stay stable.
How to use the API Mock Response Generator
- 1Define your fields and their types.
- 2Choose the record count and response shape.
- 3Generate and copy the JSON into your fixtures.
Frequently asked questions
Can I reproduce the same data later?
Yes. Set a seed value and the generator produces identical output on every run.