x402 APIs on Base Sepolia (testnet)

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.

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

Bagswww.getbags.app
Token data from the Bags API.
Market data · Base, Base Sepolia (testnet) · fixed
from 0.01 USDC✓ verified Oct 5, 2026
OmniTerminalomniterminal.app
Market news with an event window.
Market data · Base Sepolia (testnet), Base · fixed
from 0.001 USDC✓ verified Oct 5, 2026
Run402api.run402.com
Postgres databases and backend services paid with x402.
Infrastructure · Base, Base Sepolia (testnet) · fixed
from 0.1 USDC✓ verified Oct 6, 2026
Tollbooth hello (testnet)tollbooth-hello-testnet.sjwilliams8.workers.dev
Test endpoint on Base Sepolia.
Demos and testnet · Base Sepolia (testnet) · fixed
from 0.001 USDC✓ verified Oct 6, 2026
Wallets demo seller (testnet)wallets-demo-seller-server.calebgcarithers.workers.dev
Demo seller (weather) on Base Sepolia.
Demos and testnet · Base Sepolia (testnet) · fixed
from 0.001 USDC✓ verified Oct 6, 2026

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