An FX-quote API that AI agents pay per call on Celo mainnet in USA₮. One-off calls use x402 'exact' via Celo's official facilitator (gasless EIP-3009); high-frequency repeat traffic between the same agent and provider uses an AgentTab payment channel (escrow once, EIP-712 voucher per call, batch settlement onchain, refund after expiry). For builders of agents that buy data/compute per request. Agent wallet 0xECd88362804889875A0086D7a15cCD2ff85aC156, ERC-8004 agent ID 9965, every agent tx tagged celo_f4012694135b. Repo: https://github.com/zwang1111/agenttab-celo
