For example, if the user has an automated message like: "To continue, please verify your human by pressing 8."

Yes, Vapi has a

dtmf

function designed to press keypad buttons during calls, but according to the documentation, it's currently experiencing issues with delayed playback time. Current recommended workaround: Use Twilio Flex to handle the IVR navigation (keypad inputs) first, then transfer the call to Vapi. This is because Vapi currently cannot reliably send DTMF tones within the required timeframe for most automated systems. Sources: - [Discord conversation about DTMF issues](https://discord.com/channels/1211482211119796234/1338841147077820487) - [Discord conversation about Dial Keypad function](https://discord.com/channels/1211482211119796234/1336445863404372018) - [Discord conversation about DTMF workarounds](https://discord.com/channels/1211482211119796234/1342504647520157788) - [Vapi function-calling documentation](https://docs.vapi.ai/assistants/function-calling)

Include "8" in the test script as the user’s response and configure your test suite to run the scenario, allowing you to test verification flows..