DeFi data x402 APIs

Paid APIs an AI agent can call with x402. Burnbound checks each one every 6 hours without paying: it must answer a valid x402 challenge, on the host listed here, in USDC on Base or Base Sepolia. Prices are per call.

2 APIs · No paid placements: the list is alphabetical. A listing never lets an agent pay an API; its policy decides.