Toll booth for agent web context
How it works
Agents hit a paid endpoint. Facilitator settles USDC. Worker returns structured markdown. Same pattern as commercial pay-per-call agent infrastructure — edge micro version.
- POST tool with public URL
- Receive 402 + PAYMENT-REQUIRED if unpaid
- Sign exact USDC payment on Base (x402 client)
- Retry with payment proof
- Use markdown / JSON in the agent loop