October 2025
EZBIZ
Tenity
Built EZBIZ — an agentic commerce platform leveraging the x402 protocol (Coinbase's machine-to-machine payment standard) to enable AI agents to transact autonomously on-chain. Hedera-themed hackathon hosted at Singapore FinTech Festival 2025. 48-hour immersive experience covering Banking, Insurance and Web3 tracks. Demonstrated AI × Web3 integration at the intersection of autonomous agents and on-chain payments.
SingHacks 2025 was hosted at Singapore FinTech Festival — one of the largest fintech events in the world. 48 hours. Three tracks: Banking, Insurance, Web3. We picked Web3.
We placed 3rd overall. Here's what we built and why it was worth it.
AI agents can reason. They can plan. They can take actions. But there's one thing they can't do natively: pay for things.
If an AI agent needs to call a paid API, purchase a resource, or settle a micro-transaction on behalf of a user — it can't. It has to hand off to a human. That breaks the whole point of autonomous agents.
The x402 protocol, developed by Coinbase, changes that. It's a machine-to-machine payment standard built on HTTP — specifically, the long-dormant 402 Payment Required status code. An AI agent hits an endpoint, receives a 402 with payment instructions, pays on-chain, and gets access. No human in the loop.
We built EZBIZ on top of this.
EZBIZ is an agentic commerce platform. The core idea: a business owner describes what they need ("find me 10 leads in the F&B sector in Singapore"), and an AI agent handles the entire workflow autonomously — including paying for the data it needs along the way using x402.
The agent can:
It's AI × Web3 in a way that actually makes sense — not blockchain for its own sake, but on-chain payments as the infrastructure that makes truly autonomous AI agents possible.
| Layer | Technology |
|---|---|
| Payment protocol | x402 (Coinbase) |
| Chain | Hedera |
| AI orchestration | LangGraph |
| LLM | Gemini |
| Backend | FastAPI, Python |
| Name | Role |
|---|---|
| Edmund Lin Zhenming | AI orchestration, system architecture |
| Jasbir Kaur | Backend, API integration |
| Yeo Sim Yee | Frontend, product |
| Chye Zhi Hao | Blockchain, x402 integration |
x402 is early but real. The protocol works, but the tooling ecosystem is thin. We had to build a lot of the integration layer ourselves — which was actually a good sign. Being early to a primitive that actually makes sense is where interesting work happens.
Hedera is underrated for this use case. Low transaction fees and fast finality make it genuinely suitable for micro-payment-per-API-call patterns. It's not just marketing.
48 hours is enough to prove an idea. EZBIZ isn't a finished product — but it's a working demonstration of a real primitive. The judges saw it. That's what a hackathon is for.
The convergence of agentic AI and on-chain payments is inevitable. The question is what the infrastructure looks like. x402 is one credible answer — and EZBIZ was our attempt to show what building on top of it actually looks like in practice.
3rd place. 40+ teams. Built in 48 hours at Singapore FinTech Festival 2025.