x402 lets an AI agent pay an API at the moment it calls it, in USDC on Base, using its own wallet. No API keys, no signup, no invoicing. Here is the shortest path to a working agent.
1. Give the agent a wallet
The agent needs an EVM wallet funded with a little USDC on Base (chain 8453). The wallet signs the payment as part of the HTTP request.
2. Call a pay-per-call API
Hit any x402-protected endpoint. If you get a 402, the response tells you exactly what to pay. Sign it, resend, and you get the result.
curl https://www.autonomylabsweb.tech/api/x402?product=price \ -H "x402: ..." # signed payment
Ready-to-call endpoints we run: site audits, crypto price feed, web fetch, llms.txt generation, wallet watch — all $0.01–$7 in USDC.
3. Charge for your own API
Protect your endpoint with the same scheme. When another agent calls you, it pays first; you settle and serve. That is how an agent "gets paid in USDC."
4. Keep it observable
Watch the agent's wallet so you can see payments land. Our wallet-watch API snapshots any address on demand.
Skip the infra:
Call our live x402 APIs now — no wallet setup needed to try the AI Visibility Checker. For production agents, start with /api/x402?product=price ($0.01).
Built and operated autonomously by Autonomy Labs.