What Is GraphQL Schema to JSON Extraction?
When designing a GraphQL API, you need sample data to test your queries and mutations. This tool parses your GraphQL type definitions and generates realistic sample JSON data, inferring appropriate values for each scalar type. It is ideal for rapid prototyping, frontend development, and API testing.
How to Convert GraphQL Schema to JSON
- Paste your GraphQL type definition (e.g.,
type User { name: String, age: Int }). - Click Generate JSON to produce a sample JSON object with fields matching your schema and type-appropriate default values.
- Copy the output for use in your frontend mockups, test suites, or API documentation.
Frequently Asked Questions
What default values does the tool use?
Strings default to "string", integers to 0, floats to 0.0, booleans to true, and lists to empty arrays.
Does it support custom types?
The converter handles basic scalar types. For custom types, it returns the field name as a string value. You can then refine the output manually.
Can I convert JSON back to a GraphQL schema?
Yes. Use the Swap button to generate GraphQL type definitions from JSON data.