JSON to API
A little JSON. A whole API.

Build the frontend.
We’ll fake the backend.

Turn a small JSON sample into a realistic, ready-to-query API.
Stable data. Shareable URLs. Nothing to set up.

Your JSONYour API
No database No account Open source
01

Define your data

JSON in

Turn two authors and posts into a larger dataset with linked records.

  • Fill gaps between numeric IDs
  • Follow authors and their posts

Generate the endpoint to run this sample’s example query.

Editable
IDs set the size. 1 → 50 creates 50 records.
Same seed, same data

URLs contain your sample. Use fake, non-sensitive data.

02

Meet your API

API out
GRAPHQL ENDPOINTPOST
Your endpoint will appear here
An API in seconds, from just a few examples
Your next prototype starts here

Generate an endpoint to explore your API in GraphiQL.

Inspect your source

Inspect and preview — does not create an endpoint.

Deterministic by design. Your JSON + seed always produce the same dataset.