Produces mock server definitions, sandbox environment specs, API stub configurations, and fixture data for any API. Use whenever the user asks about mocking an API, creating a sandbox, "fake server", WireMock stubs, Prism mocks, MSW (Mock Service Worker), "test fixtures", "stub the API", "mock this endpoint", "generate test data", or "create a sandbox environment for my API".
Install
npx skills add LambdaTest/agent-skills --skill api-mock-helpernpx skills add LambdaTest/agent-skills --skill api-mock-helper -a claude-code -gnpx skills add LambdaTest/agent-skills --skill api-mock-helper -a codex -ggemini skills install https://github.com/LambdaTest/agent-skills.git --path api-skill/api-mockinggh skill install LambdaTest/agent-skills api-mock-helpergit clone --depth 1 https://github.com/LambdaTest/agent-skills /tmp/LambdaTest__agent-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/LambdaTest__agent-skills/api-skill/api-mocking ~/.claude/skills/api-mock-helper # Claude Code
cp -R /tmp/LambdaTest__agent-skills/api-skill/api-mocking ~/.agents/skills/api-mock-helper # Codex, Cursor, Gemini CLI, Copilot, OpenCode