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Convex All Gas Hackathon

Build a new full-stack app: Convex runs it, Firecrawl feeds it data, AgentMail gives it an inbox. Use Codex or any agent with the Convex plugin. Three weeks to ship something people can use.

Register on Luma
Aug 25
Kickoff
Sep 22
Submissions · 12:00 PM PT
Sep 25
Winners
$25,000
Cash + Codex credits

Sponsored by

How to participate

Six steps. Copy the setup prompt into your coding agent, then ship.

  1. 01

    Register on Luma

    Confirm your hackathon participation.

  2. 02

    Copy the hackathon setup prompt

    Paste it into your coding agent. It installs the Convex integration, the hackathon skill, and starts your build log.

  3. 03

    Build with Convex

    Anything goes, as long as Convex is the backend. Run /hackathon with your agent as you build to keep your hackathon log current.

  4. 04

    Deploy a public app

    Must be a convex.site or chatgpt.site URL judges or an agent can open without an invite.

  5. 05

    Share your app

    Tag @convex, @OpenAI, @firecrawl, and @agentmail on X or LinkedIn. Let's see what you built!

  6. 06

    Submit your repo, live app URL, and a three-minute video

    Submissions are due Sep 22, 12:00 PM PT.

Quick start

Setup prompt

Copy the setup prompt into your coding agent to install the Convex integration and hackathon skill.

Log as you build

Run it in your agent after each work session. It updates hackathon.md, the file judges read.

Build

Deploy

convex.site

chatgpt.site

Ask Sites in the ChatGPT app.

Submission checklist

  • public repo
  • hackathon.md at root
  • live app URL (convex.site or chatgpt.site)
  • three-minute video

Submit on vibeapps.dev

Due Sep 22, 12:00 PM PT

Register on Luma

Prizes

Overall winner

$10,000 cash

  • $5,000 in Codex credits
  • 3 months of the Firecrawl Growth plan
  • 6 months of AgentMail Startup plan
  • Codex and Convex swag

Second place

$5,000 cash

  • $2,500 in Codex credits
  • 3 months of the Firecrawl Growth plan
  • 3 months of AgentMail Startup plan
  • Codex and Convex swag

Third place

$1,500 cash

  • $1,000 in Codex credits
  • 3 months of the Firecrawl Growth plan
  • 3 months of AgentMail Startup plan
  • Codex and Convex swag

No OpenAI API credits or Convex credits are provided as credits during the hackathon. $20k Firecrawl credits for every participant during the build after you register on Luma.

Qualification and judging criteria

  • Everyday apps, not developer tools

    We score what you ship on Convex, OpenAI, Firecrawl, and AgentMail. Your hackathon build log is what judges read, so include what you built, the stack, the live URL, and your demo link.

  • Creativity and usefulness

    Build something a real person would use this week: law, hospitality, health, construction, whatever you know. Copycats and developer-only tools score low.

  • Convex depth

    Real use of queries, mutations, live updates, auth, and components. A thin frontend on a hosted page does not count.

  • Sponsor stack

    OpenAI, Firecrawl, and AgentMail do real work in your product. They generate, crawl, or send, not just sit in the README.

  • Live URL

    Judges can open what you built. Publish on convex.site or chatgpt.site. No localhost demos.

  • Social proof

    You posted your build on X or LinkedIn. Engagement counts.

  • Video demo

    Under 3 minutes. Talk less, click through the real product.

Judges

  • Jamie Turner

    Co-Founder and CEOat Convex

  • Wayne Sutton

    Head of Community & Startup Programsat Convex

  • Shawn Erquhart

    FDEat Convex

  • Michael Cann

    DevX Engineerat Convex

  • Nicolas Ettlin

    Software Engineerat Convex

  • Moustafa Elhadary

    ChatGPT / Codexat OpenAI

  • Ansh Gupta

    Applied AI, Startupsat OpenAI

  • Apoorv Jha

    Applied AIat OpenAI

  • Cole Lin

    Member of Technical Staffat OpenAI

  • Max Kelly

    Forward Deployed Engineerat Firecrawl

  • Haakam Aujla

    Co-Founder and CEOat AgentMail

  • Binoy Perera

    Founding GTM/Opsat AgentMail

  • Harry Du

    Founding Engineerat AgentMail

  • Simon Lefort

    Platform Leadat ClarityCare AI

Building resources

  • Hackathon Skill
  • Using Codex with Convex
  • Agent Plugins
  • Firecrawl Component
  • AgentMail Component
  • Convex Auth v2 super alpha
  • Convex AI Gateway (Pro teams only)
  • Discord
  • Hackathon Submission form

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. Submit before 12:00 PM PT on Sep 22 to vibeapps.dev.

The Hackathon IS NOT open to: Individuals who are residents of, or Organizations domiciled in, a country, state, province or territory where the laws of the United States or local law prohibits participating or receiving a prize in the Hackathon (including, but not limited to, Quebec, Russia, Crimea, Cuba, Iran, North Korea, Syria and any other country designated by the United States Treasury’s Office of Foreign Assets Control).

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 Convex and use hackathon cohost or partner integrations.

Can I submit a new or existing app before August 25?

Only new apps started on or after August 25 at 12 PM PT will qualify for submission.

How submissions are judged

Judging criteria

Prizes

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

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

Codex is ideal and required for the chatgpt.site. Feel free to use your favorite IDE (e.g., Claude, Cursor, GitHub Copilot, 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 on vibeapps.dev, yes please share the GitHub repo. All GitHub repos must be public to qualify.

Ready to build?

Enter the All Gas Hackathon

Build a new full-stack app: Convex runs it, Firecrawl feeds it data, AgentMail gives it an inbox. Use Codex or any agent with the Convex plugin.

Submit on vibeapps.devRegister on Luma
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