Convex All Gas Hackathon sponsored by OpenAI, Firecrawl, & AgentMail
Join the Convex All Gas Hackathon sponsored by OpenAI, Firecrawl, and AgentMail.
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.
Cash Prizes and Credits
$45,000 in total prizes and credits: $16,500 cash, $8,500 in Codex credits, and 20k in Firecrawl credits available to every participant during the build.
One prompt scaffolds a real-time app with a typed backend.
Three weeks to ship something people can use.
Let's see what you build.
How to participate
Register here on Luma.
Copy the hackathon setup prompt
Paste it into your coding agent. It installs the Convex integration, the hackathon skill, and starts your build log.
Build a new app starting August 25 with Convex as your backend.
Anything goes, as long as Convex is the backend. Run /hackathon with your agent as you build to keep your hackathon log up to date.
Deploy a public app
Required. Host your frontend using the Convex static hosting component with a convex.site or ChatGPT Sites chatgpt.site url
Share your app and tag @convex, @OpenAI, @firecrawl, and @agentmail on X or LinkedIn.
Submit your app with a video demo at (this exact link vibeapps.dev ) before September 22 at 12:00 PM PT. No localhost submissions. No private GitHub repos are allowed.
Need auth? Try the new Convex Auth v2; it's super duper alpha.
Need an LLM in your app? Use Convex AI Gateway: managed model access from your actions, no API keys to store or rotate. Available to teams on a Convex paid plans only: docs.convex.dev/ai-gateway/overview
Hackathon timeline
Hackathon starts: August 25
Submissions due: 12:00 PM PT on September 22
Winners announced: September 25
Prizes
$25,000 total: $16,500 cash and $8,500 in Codex credits.
Plus 20k in Firecrawl credits for every participant during the build.
Overall winner
$10,000 cash
$5,000 in Codex credits
3 months of the Firecrawl Growth plan
6 months of the AgentMail Startup plan
Codex, Firecrawl, and Convex swag
Second place
$5,000 cash
$2,500 in Codex credits
3 months of the Firecrawl Growth plan
3 months of the 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 the AgentMail Startup plan
Codex and Convex swag
Note: No OpenAI API credits or Convex credits are provided as prizes or during the hackathon. Prizes are non-transferable and cannot be exchanged.
Requirements
New apps only, started on or after August 25.
Convex is the backend: database, functions, and real-time sync run on Convex.
Built with Codex or any agent/IDE with the Convex plugin.
Convex Auth v1 alpha is not a requirement. Apps with no auth are still a valid submission.
Frontend runs on Convex static hosting (convex.site) or ChatGPT Sites (ChatGPT.site).
Deployed at a live URL for the /hackathon build log in the repo.
A public GitHub repo is required.
About the hackathon hosts and sponsors
About Convex: The reactive backend platform that keeps up with you and your agents. Database, functions, workflows, sync, search, file storage, and more. All TypeScript, zero glue. https://convex.dev
About OpenAI Codex: Codex is OpenAI's coding agent. It writes, reviews, and maintains full-stack apps. With the Convex plugin, Codex gets the convex-expert and convex-reviewer subagents, the Convex MCP server, and Agent Skills for auth, schemas, and migrations. https://openai.com/codex
About Firecrawl: Firecrawl turns websites into LLM-ready data. https://firecrawl.dev
About AgentMail: AgentMail gives your agents their own email inboxes. https://agentmail.to
Judges
Convex
Jamie Turner, Co-Founder and CEO at Convex
Wayne Sutton, Head of Community & Startup Programs at Convex
Shawn Erquhart, FDE at Convex
Michael Cann, DevX Engineer @ Convex
Nicolas Ettlin, Software Engineer at Convex
OpenAI
Moustafa Elhadary, ChatGPT / Codex at OpenAI
Ansh Gupta, Applied AI, Startups at OpenAI
Cole Lin, Member of Technical Staff at OpenAI
Firecrawl
AgentMail
Haakam Aujla, Co-Founder and CEO at AgentMail
Binoy Perera, Founding GTM/Ops at AgentMail
Harry Du, Founding Engineer at AgentMail
ClarityCare AI
Simon Lefort, Platform Lead at ClarityCare AI
Vigil Labs
Nicole Grossmann, Founding Team at Vigil Labs
Judging criteria
Everyday apps, not developer tools.
We score what you ship on Convex, OpenAI, Firecrawl, and AgentMail. Your hackathon.md 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.
Connect with hackathon participants
Join the Convex Discord #hackathon channel: convex.dev/community.
Building Resources
Convex AI Gateway (paid teams only)
Terms and conditions
An unlimited number of individuals and teams are allowed.
You can join solo or as a team. Teams can have no more than four people.
Only one team member needs to register here on Luma.
Participants must be 18+.
Only new apps started on or after August 25 qualify for submission.
Employees of Convex, OpenAI, Firecrawl, AgentMail, and their immediate family members are not eligible.
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 (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).
See the complete Rules & Guidelines here.
You must submit your application using this (exact link) before September 22 at 12:00 PM PT to be eligible.