Hotline Challenge Join the Web Dev Challenge
In this challenge, build a custom AI voice hotline using ConversationRelay. Hotlines due Friday, November 21, 2025.
Press 1 for an awesome AI-Powered Hotline
Ever thought: gee, I wish there was a hotline for that? Well now’s your chance to build it!
Think: an office-hours hotline, community resources line, pizza-ordering line, event status line, bug triage, wake‑up calls, volunteer coordination, campus shuttle tracker — if it rings it fits.
The Tool: ConversationRelay
Your hotline must use ConversationRelay as part of the build.
Twilio’s ConversationRelay lets you place a relay layer between callers and your logic so you can route messages, swap in bots or humans, and keep a clean separation of concerns.
Use it with Twilio Programmable Voice and/or Messaging (SMS/WhatsApp), webhooks, and your runtime of choice (Twilio Functions/Studio/Serverless or your own stack).
Ready to get started? Check out the ConversationRelay docs, dive into one of the tutorials on the Twilio blog, or check out the starter repo on Github.
Make new connections and get expert guidance
The Twilio team has set up a dedicated channel on the Twilio Discord for brainstorming, sharing ideas, and keeping each other accountable.
Watch the full episode for inspiration
Submit an app to earn rewards
$50 Credit at the CodeTV Store
The first 5 submissions get store credit for CodeTV gear and goodies.
Exclusive Member Badge
Builders get an exclusive badge on their CodeTV profile.
Exclusive Discord Role
Builders get an exclusive role in the CodeTV Discord.
Showcase Your App on CodeTV
Demo your app in the hackathon showcase.
This challenge is brought to you by 
The Rules
#1: Meet the Brief
Build an app to help people reconnect with the world outside their screens.
#2: Find a Friend (or Don’t)
These challenges are more fun with a friend, or build on your own.
#3: Time-Box the Build
Take 30 minutes to plan your app, and 4 hours to build it.
#4: Publish the source code
Release your app’s code on GitHub or a similar open source platform.
FAQ
Can I build my app as part of a team?
Yes! While building solo is absolutely fine, we encourage teams of 2 for these challenges. Part of the fun is collaborating with other people. However, please note that while teams of 3+ are allowed, each project will receive a maximum of 2 of each monetary or product reward.
Am I allowed to use AI?
You’re allowed to use any tool that you would use as part of your regular workflow. We only ask that you try to keep in the spirit of the challenge, which is to learn something new. We do reserve the right to deny rewards to any submissions that appear to be entirely generated by AI, as that violates the spirit of the challenge.
I’m not sure I have enough experience to build this. Should I still try?
Yes! These challenges are perfect for trying something new with a limited time commitment and low stakes. We all start out not knowing how to do stuff — it’s only by doing stuff that we gain the experience and confidence that makes us able to do stuff. This is also a great opportunity to pair with someone and help each other level up. Ask a friend, or hit up the CodeTV Discord to find someone to work with.