A baseboard management controller (BMC) may be configured to enable a communication interface from the BMC to a host processor on a host computing device and provide input to the host processor via the communication interface. The input causes at least one diagnostic operation to be performed on the host computing device. The BMC may collect host information in response to the diagnostic operation(s) being performed. The BMC may report the host information to another entity and/or store the host information in persistent memory within the BMC. In some embodiments, the input may be provided to the host processor in response to receiving a signal from a fabric controller. In some embodiments, the input may be provided to the host processor in response to detecting an anomaly associated with the host computing device. The BMC may take at least one action to mitigate the anomaly.