On-chain 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.
3 APIs · No paid placements: the list is alphabetical. A listing never lets an agent pay an API; its policy decides.
- Glassnodex402.glassnode.com
On-chain metrics for Bitcoin and other assets.
On-chain data · Base · fixed
from 0.01 USDC✓ verified Oct 5, 2026 - Nansenapi.nansen.ai
On-chain analytics: wallet balances and profiles.
On-chain data · Base · fixed
from 0.01 USDC✓ verified Oct 5, 2026 - OneSourceapi.onesource.io
Block, balance and token data over RPC.
On-chain data · Base · fixed
from 0.001 USDC✓ verified Oct 5, 2026