Treasury yields, FRED indicators, macro composite scores. Pay per call with USDC on Base. No API keys. No subscriptions. No accounts.
Mercury402 implements the x402 payment protocol — the internet-native standard for machine-to-machine micropayments built on Base.
Your agent sends a standard HTTP GET or POST request to any Mercury402 endpoint. No authentication headers required.
Mercury402 returns a payment descriptor with the exact amount, accepted token (USDC), and Base chain details.
Your agent submits an EIP-3009 signed payment. Settlement is sub-2 seconds. No gas wars. Cost: ~$0.0001.
Mercury402 verifies on-chain and returns structured JSON. Same input, same output, every time. No hallucinations.
Treasury yields, FRED economic indicators, inflation trackers, labor market data, and macro composite scores. All deterministic. All pay-per-call.
USDC on Base. Sub-second settlement. ~$0.0001 per transaction. Backed by Coinbase, Cloudflare, and Visa.