GraphQL Mock Data Generator

How to use this tool

1. Paste a GraphQL schema. Object types, enums and the basic scalar types (String, Int, Float, Boolean, ID) are understood.
2. Name the root type. Query is the default; use another type name if your schema’s entry point differs.
3. Generate, then copy. The JSON is placeholder data in the shape of your schema, ready to paste into a test.

Worked example

Paste the sample schema (a Query type with a user field of type User and a count of type Int, plus a User type with id, name, age and active). The output is {"user": {"id": "id-1", "name": "Example name", "age": 42, "active": true}, "count": 42}. Lists produce two example items; a type that refers back to itself stops at a depth of 3 instead of looping forever.

What this tool does not do / Limits

The values are placeholders, not real data: every String is Example plus the field name, every Int is 42, every Float is 3.14 and every Boolean is true. Custom scalar types fall back to a sample string. Arguments on fields are ignored, interfaces are read as plain object types, and directives are not interpreted.

Frequently asked questions