API Mocking Framework

Use this skill when

• Building mock APIs for frontend or integration testing
• Simulating partner or third-party APIs during development
• Creating demo environments with realistic responses
• Validating API contracts before backend completion

Do not use this skill when

• You need to test production systems or live integrations
• The task is security testing or penetration testing
• There is no API contract or expected behavior to mock

Safety

• Avoid reusing production secrets or real customer data in mocks.
• Make mock endpoints clearly labeled to prevent accidental use.

Context

Requirements

Instructions

• Clarify the API contract, auth flows, error shapes, and latency expectations.
• Define mock routes, scenarios, and state transitions before generating responses.
• Provide deterministic fixtures with optional randomness toggles.
• Document how to run the mock server and how to switch scenarios.
• If detailed implementation is requested, open

  resources/implementation-playbook.md

  .

Resources

• resources/implementation-playbook.md

  for code samples, checklists, and templates.