API Interceptor is a Chrome extension developed by Anshul Nema that serves as a valuable tool for developers and testers. This extension allows users to intercept and analyze network requests made by web pages, making it an essential tool for debugging and testing web applications.

With API Interceptor, users can modify network requests in real-time, giving them the ability to analyze and manipulate responses. The extension provides features such as response and schema analysis and modification using JSON Editor. Users can also mock responses using JSON Schema Faker or supply their own custom API response. Additionally, API Interceptor allows for response status modification.

Whether you're a web developer, quality assurance engineer, or simply curious about how your favorite websites work behind the scenes, API Interceptor can be your go-to tool. It offers the ability to view raw server responses, customize responses and schemas, and even generate fake responses using customized schemas.

API Interceptor currently requires two permissions: "storage" and "debugger." The "debugger" permission is necessary for response modification, while the "storage" permission is needed to store the maintaining clientId.

It's worth noting that when clicking on the API Interceptor icon, you may see a message stating ["api-interceptor" started debugging this browser]. This message is displayed because the extension uses the debugger API, which is required for response modification. Chrome's security policy may cause the banner to appear on all tabs, even when a tab is not being modified. To hide the message, you can run Chrome with the --silent-debugger-extension-api command line switch. Additionally, clicking the "Cancel" button on the message will stop intercepting requests on the page, and to reactivate it, simply click the "Play" button in the extension popup.