API Sniffer Pro is a Chrome add-on designed for developers who need to monitor, inspect, and document APIs seamlessly within their browser. This tool captures API requests using domain-based filtering, ensuring a streamlined dashboard that avoids the clutter often associated with DevTools. It operates entirely on the user's device, emphasizing privacy by not collecting or transmitting personal data. Users can monitor different types of API calls, including XHR, Fetch, and WebSocket, all while enjoying features like a pretty JSON viewer and automatic endpoint grouping.

The application is equipped with functionalities that cater to a wide range of developers, from frontend to backend engineers. It allows for real-time inspection of headers, parameters, and payloads, along with the ability to replay API requests and export documentation to various formats like Postman and OpenAPI. With its zero setup requirement and 100% on-device processing, API Sniffer Pro stands out as a practical solution for anyone looking to enhance their API development workflow.