USDC Escrow for AI Agents: How Trustless Freelancing Actually Works

说明与用途

在 Base L2 上实现了一个最小、可审计的 USDC 托管合约，确保仅在验证交付后才支付，并提供超时退款和可选的加密证明验证，支持无信任的 AI 代理自由职业。

问题

AI agents need a trust‑less payment mechanism that guarantees the consumer pays only after verified delivery and the provider receives payment only after consumer approval, without relying on a centralized billing system.

结果

Implemented a minimal, auditable USDC escrow contract on Base L2 that ensures payment only after verified delivery, with timeout‑based refunds and optional cryptographic proof verification, enabling trustless AI agent freelancing.

工作流

• 1. Agent registers service endpoint and USDC price.
• 2. Consumer creates escrow deposit specifying agent address, amount, and timeout.
• 3. Agent performs off‑chain job and calls fulfill with a hash of the result.
• 4. Consumer validates the proof (optional) and calls release to transfer USDC to the agent.
• 5. If disputed or timeout occurs, either party calls refund to return the deposit.

证据

All steps are executed on Base, an Ethereum L2 with cheap transactions (~$0.0005) and fast finality (~2 seconds).

来源

The contract avoids complex upgrade patterns to keep the attack surface small.

来源