API Tester is a web-based tool designed to facilitate the testing and debugging of APIs. The platform offers a straightforward interface for users to create, send, and analyze requests and responses for APIs, which helps in identifying issues and ensuring performance and reliability. It supports various request methods such as GET, POST, PUT, and DELETE, and allows users to add headers, parameters, and authentication to requests. Additionally, API Tester provides users with features like response validation, automated testing scripts, and detailed reports, which are essential for developers working to optimize their API integrations and workflows.