Let your AI agents pay their own way.Safely.

I'm Edward Zhou, a full-stack engineer of 13 years. I help teams design and build on-chain payments and spending controls for AI agents.

SERVICES

What I do

  • Prototyping

    A working prototype of one agent-payment use case in 2–4 weeks.

    DeliverableA working prototype deployed to testnet, the full source code and a walkthrough call

  • Architecture review

    What your agent can spend, what it can do, and what happens when it fails.

    DeliverableA written report with ranked risks, recommended spending controls and a follow-up call

  • Technical due diligence

    An independent read on a project's contracts and architecture, for investors or teams.

    DeliverableA due-diligence report covering findings, red flags and a clear go / no-go view

WORK

An agent wallet that can’t overspend

Live demo · test network

An AI agent pays for API calls on its own through x402. Its wallet is a smart contract: any payment that breaks a rule is refused before money moves, and it pays services outside its list only if they have a good ERC-8004 reputation from reviewers I trust. Running live on the Base Sepolia test network.

  • Spending limits enforced in the contract: per payment, per day and per task
  • Every payment, refusal and rating is a public on-chain record anyone can verify
  • Impostors and unknown services are refused; trust is earned through on-chain reputation
Screenshot of the live agent wallet dashboard: the wallet’s rules, today’s spending, and a timeline of payments, refusals and ratings

ABOUT

Who you’d be working with

I've built software in Australia for many years, across front end, back end and production operations. Yunshu AI is my independent practice. I take on a small number of technically demanding projects, and work in both English and Chinese.

Stack

  • TypeScript
  • Rust
  • Solidity
  • Solana
  • NEAR
  • AWS
  • x402
  • ERC-8004

CONTACT

Got an idea? Let's talk for 20 minutes.

No charge, and you'll get short written notes afterwards.