HTTPMocky is a Chrome extension designed for developers and QA engineers, enabling them to intercept and mock HTTP requests made via fetch or XMLHttpRequest (XHR). This tool is particularly beneficial for simulating server responses directly within the browser, helping to streamline frontend development and testing processes. With features like rule creation for matching requests, it allows users to override status codes and response bodies seamlessly.

The extension integrates into the Chrome DevTools panel, providing an intuitive interface to manage rules and toggle them on or off as needed. By injecting lightweight code into the inspected page, HTTPMocky effectively wraps the native fetch and XHR objects, allowing for precise control over the responses returned during testing. This capability is essential for developers looking to test error handling, simulate various server responses, or develop offline workflows.