API Testing Skill

Test browser-side API integrations by mocking responses, intercepting requests, and monitoring network traffic from the page perspective.

Server-side API testing — driving real backend endpoints over HTTP/1.1+HTTP/2, gRPC, GraphQL, or WebSocket, correlating with server logs (file/Docker/Kubernetes), and asserting on database state — belongs in the backend-testing skill.

When to Use

This skill activates when:

• User wants to test API integrations
• User needs to mock backend responses
• User wants to simulate error scenarios
• User asks about request interception
• User needs to test offline behavior

Capabilities