API Mock Server

intermediatetestingMin 16K context

Generates mock API servers and stubbed responses from OpenAPI specs, sample payloads, or natural-language descriptions. Produces realistic fixture data, configurable latency and error scenarios, and ready-to-run mock servers using tools like Prism, MSW, WireMock, or json-server so frontend and integration tests can proceed without the real backend.

Use Cases

  • Spinning up a mock server from an OpenAPI spec
  • Generating realistic fixture responses for endpoints
  • Simulating latency, rate limits, and error responses
  • Creating MSW handlers for frontend tests
  • Unblocking integration tests when the backend is unavailable

Example Prompt

Generate a mock server from this OpenAPI snippet for local frontend development.

Endpoints:
- GET /products (paginated list)
- GET /products/{id}
- POST /orders

Requirements:
- Realistic sample data
- Simulate a 500 error for one product id
- Use Mock Service Worker (MSW)

Provide the handler code and setup instructions.

Recommended Models

Compatible Tools

claude-codecursorkiroany

Modalities

Input: text, code
Output: code, text

Related Skills

Author

OpenModels Community

@openmodelsrun
API Mock Server — AI Agent Skill | OpenModels