Auth Inspector (SAML & OIDC) is a free Chrome add-on designed to streamline the inspection of authentication traffic for identity engineers and developers. This tool enhances the Chrome DevTools by adding a dedicated panel that captures and presents SAML and OIDC requests and responses in real-time, making it easier to understand the data flow during login processes across various identity providers (IdPs). It supports SAML (Redirect & POST bindings) and OIDC operations like authorization and token handling, providing a comprehensive overview without the need to sift through raw network data.

The key features include a readable format for SAML responses, detailed decoding of OIDC tokens, and a user-friendly interface with tabs for parsed, decoded, and raw data. The extension prioritizes security by redacting sensitive information and operates solely within the DevTools environment, ensuring no external data collection or remote requests. With fast filtering options and the ability to export session events, Auth Inspector is a valuable tool for debugging authentication flows.