The x402 protocol is interesting: AI agents pay per API call using USDC micropayments, with no signup or API keys needed. How it works: 1. Agent calls an endpoint 2. Gets HTTP 402 + payment instructions 3. Pays $0.001-0.005 in USDC on Base 4. Gets the response No rate limits. No auth tokens. Just crypto micropayments. We have 10 x402 endpoints live if you want to test: http://69.62.106.38:3100/x402/pricing Still early, but the "pay per call" model makes more sense than monthly subscriptions for AI agents that make sporadic requests. #ai #crypto #api #web3 #developer