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OpenAPI Mock Server

Use OpenAPI as the source of truth for paths, request bodies, response schemas, examples, and status codes, then expose realistic mock behavior for client teams.

Contract-first mocking

An OpenAPI mock server is most valuable when the API contract is reviewed before implementation. Product, frontend, backend, and QA teams can agree on required fields, optional fields, pagination, and error formats while code is still cheap to change.

paths:
  /api/accounts/{id}:
    get:
      responses:
        "200":
          description: Account found
        "404":
          description: Account missing

Once the examples are agreed, create matching mock endpoints on HttpStatus for app development and demos.

Related links

Create OpenAPI-style mock routes

Use your contract examples as the response body for hosted mocks.

Create Free Mock API