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

Description and use

An autonomous AI agent that earns USDC per execution, covering its own gas costs and operating without constant monitoring.

Problem

Developers need autonomous AI agents that can monetize their work via on‑chain micropayments, covering compute and storage costs without continuous human oversight.

Outcome

The agent autonomously earns USDC, covering its own gas costs and enabling continuous operation with minimal human intervention.

Workflow

• Set up a Base wallet with USDC and Web3.py
• Create a scheduler (GitHub Actions cron or Cloudflare Workers cron) to trigger the agent every 15 minutes
• Implement an AI service worker that processes requests and signs an x402 invoice for a pre‑agreed amount
• Caller pays the invoice via x402; the agent’s wallet claims the funds
• Use remaining balance to cover gas for the next transaction; pause if balance is low

Evidence

The agent’s wallet automatically claims the funds.

Source

If the balance drops below a threshold, the agent pauses until topped‑up manually.

Source