I Built an AI Radio Phone In Line (Grok Voice)

I just gave Grok Voice its own phone number. In this build I wire xAI's brand new Voice Agent Builder into Twilio, so an AI answers, screens the caller, and lines them up to go on air. Name, location and question straight onto a lower third. I'll show you what the launch handles for you in about two minutes, what's still on you to build, and the gotchas nobody mentions... consent, mix minus, and the one setting that stops trolls torching your bill. Original build, no recycled clips. Grab a coffee. We're doing this live. 0:00 Building AI phone call screener 5:13 Troubleshooting YouTube stream performance 11:11 Configuring Grok Voice agent instructions 16:57 Scaffolding the FastAPI project 22:11 Purchasing a Twilio phone number 27:54 Configuring Twilio API credentials 33:31 Evaluating server hosting options 41:36 Designing the call screening workflow 48:50 Setting up Cloudflare Tunnel 55:08 Streaming live on X platform 1:04:17 Generating SpaceX AI API keys 1:11:19 Scaffolding the FastAPI application 1:20:16 Deploying the local server 1:28:25 Integrating OBS browser source overlay 1:38:04 Troubleshooting Cloudflare DNS setup 1:42:23 Broadening Cloudflare token permissions 1:48:34 Generating assets with Adobe Firefly 1:55:06 Debugging Twilio connection errors 2:01:29 Resolving Twilio SDK issues 2:05:25 Analyzing Twilio connection errors 2:11:22 Analyzing Twilio signature validation 2:16:29 Running Twilio WebRTC diagnostics 2:24:41 Automating browser tests with Browser Beast 2:32:07 Upgrading to Fable 5 API 2:36:20 Analyzing Tank task context 2:44:01 Monitoring API token usage costs 2:48:52 Running pre-flight probes 2:54:04 Placing the first test call 2:59:09 Debugging conference control flow 3:06:18 Sharing code with the community 3:11:14 Updating Twilio key permissions 3:19:51 Testing end to end calls 3:28:30 Analyzing audio routing issues 3:34:06 Adding audio device selection 3:39:05 Taking live callers on air 3:47:28 Discussing Tank development updates