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The Modern Stack Hackathon

From AI agents to voice apps, the modern stack provides you with the tools to go from idea to shipped product in record time. This means new apps built starting Sept 16th.

Join the Modern Stack Hackathon with Convex, Firecrawl, Vapi, Better-Auth, Autumn, Resend and OpenAI, to build a full-stack app and compete for $20k in cash prizes and credits. Let’s see what you ship!

Register now

Sponsored by

Convex - The open-source backend platform that keeps your app in syncFirecrawl - Turn websites into LLM-ready dataVapi - Voice AI agents for developersBetter-Auth - The most comprehensive authentication framework for TypeScriptautumn - Stripe for AI StartupsResend - Email for developers

Supported by

OpenAI - Building safe and beneficial AGI is our mission

How it works

Duration
  • September 16Hackathon starts.
  • October 1App submissions are due 12 PM PT.
  • October 7Winners announced.
Location
Global

Register at Luma, then submit your app to vibeapps.dev using the modernstack tag.

Prize Pool
$20,000in cash, credits, and prizes

How to participate

1
Build requirements

Create a new app that starts on or after September 16 using one or all of the modern stack sponsors.

2
Share

Share your app and tag us on Twitter (X) or LinkedIn @convex_dev, @firecrawl_dev, @Vapi_AI, @better_auth, @resend, @autumnpricing, @openai

3
Submit

Submit your app with a video demo on to Vibe Apps directory and select the modernstack tag before 12 PM PT on October 1st. No localhost submissions are accepted.

Prizes

Overall Winner
  • $10,000 Cash
  • 6 months of Convex Pro
  • Resend (3 months free)
  • 3 months free to the FireCrawl growth plan
  • Better Auth Merch
  • Autumn TRMNL e-ink display
  • $1000 in Vapi credits + swag bag
  • Convex Swag
Second Place
  • $3,000 Cash
  • Resend (50% off for 3 months)
  • 3 months free to the FireCrawl growth plan
  • Convex Swag
Third Place
  • $2,000 Cash
  • Resend (20% off for 3 months)
  • 3 months free to the FireCrawl growth plan
  • Convex Swag

OpenAI Category Prize

Best use of OpenAI wins $5,000 in OpenAI credits.

Resources

Convex DocsConvex Hackathon ResourcesConvex Community DiscordFirecrawl DocsGet 20k Firecrawl CreditsVapi DocsBetter-Auth DocsAutumn DocsResend DocsResend Convex ComponentOpenAI Docs

Meet the Judges

Jamie Turner
Jamie Turner
Co-Founder and CEO at Convex
Moustafa Elhadary
Moustafa Elhadary
GTM at OpenAI
Bereket Engida
Bereket Engida
Creator of @better-auth
Michael (RasMic) Shimeles
Michael (RasMic) Shimeles
DevX Engineer at Convex
Chris Pennington
Chris Pennington
Developer Experience Engineer at Resend
Wayne Sutton
Wayne Sutton
Head of Community & Startup Programs at Convex
Gergő Móricz
Gergő Móricz
Software engineer at Firecrawl
Dan Goosewin
Dan Goosewin
DevRel & Partnerships Lead at vapi.ai
Shawn Erquhart
Shawn Erquhart
Product Engineer at Convex
Tanvir Ahmed
Tanvir Ahmed
SWE Intern at Autumn (yc s25)

Rules & Guidelines

Eligibility

Participants must be at least 18 years old. Employees of Convex, hackathon sponsors or cohosts, and their immediate family members are not eligible to participate.

Submission requirements

All submissions must be made by the deadline. Projects should be original and not violate any intellectual property rights. Each submission must include a Convex and at least one hackathon partner integration.

How submissions are judged

The judges will review your app based on 1) how well you Convex and the hackathon co-host/sponsors' integrations, 2) creativity and quality of your full-stack app, 3) video demo showing how you built your app, less talk, more demo, and 4) bonus points for social shares. Winners will be announced on October 7th!

Prizes

Winners will receive cash prizes, via cash or cards or credits or swag determined by the hackathon coshost. Prizes are non-transferable and cannot be exchanged for other items.

What can I use to build my full-stack app?

Feel free to use your favorite IDE (e.g., Cursor, Windsurf, or any other IDE) to build your app.

Can I submit more than one app to the hackathon?

Yes! Build as many apps as you want and submit them all. Keep cooking.

Do I have to share my source code to participate in the hackathon?

When submitting your app, please share the GitHub repo. If you would like to keep your repo private, invite wayne@convex.dev to your GitHub repo.

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