# TRINH VAN PHUC

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [TRINH VAN PHUC](https://cerebralvalley.ai/u/FenBig)
- **GitHub:** https://github.com/shintrinh/SmartLocalUs-VoiceSubmission
- **Demo video:** https://www.youtube.com/watch?v=_76RxoUHOsQ
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2269

FenBig AI Receptionist is the AI voice agent that never misses a call for US local businesses. FenBig's SMS service predates the hackathon window. Everything shown in the demo video was built during the hackathon window (26 October – 4 November 2026): the entire voice call component, including Twilio voice webhooks, the conversation stage machine, the AI reply layer, structured tool calling, the four-tier Meta fallback chain, lead capture, and human handoff. For HVAC and other local service businesses, a missed call is a job lost to a competitor. FenBig answers instantly, walks through Issue, Address, Urgency, Preferred time and Confirm to Completed, books the appointment with a real tool call, saves the lead, and hands off to a human when asked.

## More from Meta Global AI Developer Hackathon

- [Rhobound-MCP](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2266)
- [OneNeuron](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2267)
- [Graspt](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2268)
- [LegalLens AI](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2270)
- [Blackcaps](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2271)
- [Wick Broker](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2272)

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