In the context of SilverBullet (a successor to OpenBullet), a .svb file contains the logic required to automate interactions with a specific website—in this case, the platform. "Fc" often stands for "Full Capture," meaning the configuration is designed not only to check if a set of credentials (username/password) is valid but also to "capture" or extract additional account details. Key Components of an SVB Config
: Whether the account is protected by Email or Mobile 2FA.
: These extract specific tokens, such as session IDs or CSRF tokens, required to maintain a valid login session.
A typical SVB config for Steam consists of several blocks of code that perform the following functions:
: These send HTTP requests to Steam's login endpoints. Since Steam uses modern security, these blocks often handle complex JavaScript challenges or encrypted login parameters.