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Mock GraphQL Query Generator

Used by developers, writers, and creators worldwide.

A mock GraphQL query generator saves you from handwriting boilerplate operations every time you need a test fixture or prototype scaffold. This tool produces realistic queries and mutations for common entities — Users, Products, Orders, Posts — with typed variables, nested field selections, and correct syntax throughout. Developers use it to seed Apollo Studio and Insomnia, scaffold data-fetching hooks before a schema is ready, or generate resolver fixtures that cover full CRUD flows. Set the count to get anywhere from one to many operations, and filter by queries, mutations, or both. Paste the output straight into GraphQL Playground, MSW, or Postman's GraphQL mode and adjust field names to match your actual schema.

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How to use

  1. Choose your options above
  2. Click Generate
  3. Copy your result

Detailed instructions

  1. Set the count input to how many operations you want, between 1 and 10, based on your testing needs.
  2. Choose an operation type: select 'query' for read-only fetches, 'mutation' for write operations, or 'both' to get a mixed batch.
  3. Click Generate to produce the GraphQL operations, then review the output in the results panel.
  4. Copy individual operations or the full list and paste them into your GraphQL client, test file, or mock server handler.
  5. Edit field names, variable types, and arguments to match your actual schema before running them against a live endpoint.

Use Cases

  • •Seeding Apollo Studio with ready-to-run query and mutation operations for a new API surface
  • •Generating Jest or Vitest resolver fixtures covering create, update, and delete flows
  • •Scaffolding urql or Apollo Client hooks before the backend schema is finalized
  • •Populating MSW handlers with realistic GraphQL operation shapes for browser and Node mocks
  • •Documenting a new API in a README with concrete query and mutation examples developers can copy

Tips

  • →Generate 'both' types and use the query as the read-back step to verify data after running the mutation in your test.
  • →Paste the output into Apollo Studio's sandbox with schema introspection enabled to instantly see which fields need renaming.
  • →When scaffolding MSW handlers, generate five or six operations at once to cover multiple entity types and reduce repetitive handler setup.
  • →For teaching purposes, generate one query and one mutation side by side so learners can see the structural difference directly.
  • →Mutations are most useful as fixtures when you strip them down to the minimal field selection you actually assert on in the test.
  • →If your schema uses custom scalar types like `DateTime` or `UUID`, search the generated output for `String` or `ID` and replace them accordingly.

FAQ

can I paste these generated GraphQL queries directly into my project

Yes, as a starting point. The operations use realistic conventions and plausible field names, so you typically only need to align argument names and scalar types with your actual schema. Run an introspection query or open your schema's docs tab to verify compatibility before wiring anything into production code.

how do I test GraphQL queries without a running backend

MSW (Mock Service Worker) lets you intercept GraphQL requests in the browser or Node and return hardcoded data — paste the generated operations directly into your handler definitions. For a lightweight local server, `json-graphql-server` spins up a GraphQL API from a JSON file in one command, no schema writing required.

what is the difference between a GraphQL query and a mutation

Queries are read-only and can be cached or parallelized; mutations are write operations executed in sequence that create, update, or delete data. Keeping them separate lets clients and servers make safe assumptions about side effects. Use the Operation Type selector to generate only queries, only mutations, or a mix of both.