Virtual WebAuthn is an open-source tool developed to enable developers to test WebAuthn authentication flows without the need for a browser or an actual authenticator, specifically designed for those working with Go. WebAuthn, a component of the FIDO2 specifications, allows for passwordless authentication by leveraging possession and biometric-based methods, significantly enhancing security and user experience by eliminating the vulnerabilities associated with passwords. With its adoption now covering approximately 95% of global user devices, WebAuthn offers improved interoperability, privacy, and a seamless login experience, benefiting both users and application builders. Recognizing the absence of effective tools for validating WebAuthn flows, Descope created Virtual WebAuthn to assist in testing registration and authentication processes and decided to share it with the community to aid in the integration of FIDO-based authentication solutions. Additionally, Descope encourages developers and product owners to engage with their user community, AuthTown, to learn and collaborate on authentication best practices.