ApiTester is a powerful Chrome add-on designed for developers and QA engineers to capture, inspect, and test API requests directly within the browser. This tool enables users to monitor XHR, Fetch, and GraphQL requests from the active tab, providing an intuitive interface for filtering requests by method, status code, or URL. It facilitates easy inspection of request and response details, including headers and JSON bodies, which enhances the debugging process.

In addition to capturing and inspecting requests, ApiTester allows users to modify and replay API calls to test various scenarios. It features fuzz testing capabilities that automatically generate payload variations to assess API resilience against unexpected inputs. An optional AI-assisted analysis feature can provide suggestions for further testing, ensuring comprehensive coverage of edge cases. All operations are performed locally, maintaining user data security.