USDC Escrow for AI Agents: How Trustless Freelancing Actually Works

说明与用途

基于USDC的最小托管合约让AI代理在完成任务后才收到付款，实现无需中介的可信自由职业。

问题

AI agents need a payment mechanism that guarantees funds are released only after verifiable task completion, while protecting callers from paying for incomplete or malicious results.

结果

The escrow pattern enables trustless AI freelancing with minimal on‑chain logic, reducing dispute risk and ensuring payment only upon verifiable completion.

工作流

• 1. Client calls deposit(taskId, agentAddress, amount, timeout) to lock USDC.
• 2. Agent performs the task off‑chain and signs keccak256(taskId, payer, agent, amount).
• 3. Agent or a relayer calls release(taskId, signature) to trigger fund transfer.
• 4. If no valid signature before deadline, client calls refund(taskId) to reclaim funds.

证据

The contract pulls USDC from the caller’s wallet (via transferFrom) and locks it.

来源

Agent signs keccak256(taskId, payer, agent, amount) and publishes the signature.

来源

If the deadline passes without a valid signature, the caller invokes refund(taskId).

来源