WebDevAuthn is a web tool to test & analyze FIDO2/WebAuthn requests and responses. The web application can work as a playground, letting developers experiment and understannd with the WebAuthn internals, while also allowing the testing and experimentation of FIDO2 authenticator devices. Furthermore, developers may use this tool's injector (in the form of embedded code or an extension) to hijack WebAuthn calls and analyse them. The tool also features an advance virtual authenticator, able to emulate WebAuthn responces. Through the virtual authenticator, developers are able to perform advance testing of their implementation in terms of security and compliance.

Useful links:

• Project on GitHub
• WebDevAuthn Extension for Chrome
• WebDevAuthn Extension for Firefox