How I Built an Autonomous AI Agent That Earns USDC While I Sleep

Описание и применение

Создан автономный AI‑агент, который принимает микроплатежи в USDC через заголовок x402, обрабатывает запросы через FastAPI и Redis, выполняет AI‑задачу и масштабируется горизонтально.

Задача

Developers want to create a self‑serving AI agent that can accept micro‑payments for its work, offset hosting costs, and learn on‑chain payment economics.

Результат

The agent processes requests in ~120 ms, charges callers directly in USDC, and can be scaled by adding worker instances.

Рабочий процесс

• 1. Deploy FastAPI front‑end that validates X‑Payment header and enqueues job in Redis.
• 2. Run async worker pool that pulls jobs from Redis, executes AI logic (e.g., sentiment analysis), and stores result in Redis.
• 3. Verify x402 payment header using web3.py against USDC contract on Base and ensure amount matches price.
• 4. Return result to caller via HTTP after job completion.
• 5. Scale workers horizontally by adding more instances sharing the same Redis queue.

Доказательства

The x402 spec defines a payment header: X-Payment: <token_address>:<chain_id>:<amount>:<receiver>:<nonce>:<signature>

Источник

We verify the signature against the token contract (USDC on Base) and ensure the amount matches our price.

Источник