chain.openverbs.com
x402Grade BLast checked 4 hours ago
POST https://chain.openverbs.com/v1/read-contract
Call a read-only (view/pure) function on any deployed contract via eth_call and get the decoded result. Give the contract address and a human-readable signature (e.g. 'balanceOf(address) view returns (uint256)') plus args; include return types to decode outputs, else raw hex is returned. Reads allowances, oracle prices and vault/DAO state. Read-only, no signing. Ethereum, Base, Arbitrum, Optimism, Polygon.
Price$0.006per chain read · paid in USD on Base
Uptime100%
3/3 probes · 387 ms
Score75Grade B
Paid usage, 30 days2payers · 3 calls
How to buy
This endpoint takes pay-per-call payments over x402. Call it once without paying to see its live price; any x402 client then pays and retries automatically.
curl -i -X POST "https://chain.openverbs.com/v1/read-contract"
# HTTP/1.1 402 Payment Required: price, asset and payTo are in the responseRecent checks
| Checked (UTC) | Result | Status | Time | Live price |
|---|---|---|---|---|
| 2026-10-11 06:31 | Valid 402 | 402 | 387 ms | $0.006 |
| 2026-10-11 02:00 | Valid 402 | 402 | 260 ms | $0.006 |
| 2026-10-10 21:30 | Valid 402 | 402 | 454 ms | $0.006 |
Receipts
No test purchases yet. Graded test purchases are next on our list; until then every number here comes from unpaid checks.
What a check proves