Developer Tools

JSON to GraphQL Schema Type Generator

Turn REST-style JSON samples into GraphQL type definitions with Int, Float, String, and Boolean scalars. Helpful when sketching a first schema during API migration.

DeveloperGraphQLJSON

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Quick actions

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Use cases

  • Bootstrap GraphQL types while migrating legacy REST APIs
  • Prototype AppSync or Apollo Server schemas from sample payloads

How to use

  1. Set the root type name and paste sample JSON
  2. Review nested type blocks on the right
  3. Copy the generated schema

Example input and output

JSON

{"ok":true}

GQL Schema

type Res { ok: Boolean }

FAQ

How do I mark fields as required?

Enable the non-null (!) modifier to emit required fields across the schema.

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