api.x-402.online
Get ETH, USDC and up to ten ERC-20 balances of one address in a single call, human-readable. ETH plus USDC plus up to ten ERC-20 balances of one address in a single call, decimals resolved, amounts human-readable. Base mainnet. Query: ?addr
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 221 ms
- Price
- $0.005 per call
- Paying buyers, last 30 days
- 3 (directory's own records)
- Paid calls, last 30 days
- 4
- Category
- Blockchain reads
- Address
- https://api.x-402.online/v1/chain/balance
Accuracy: paid answers checked against an independent record
Not yet in our paid checks. A seller we have not checked has neither passed nor failed.
For agents
This page as JSON: /sellers/7f989d14627e.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).