ScriptMasterLabs.com · x402 Directory
https://api.onesource.io/api/chain/estimate-gas
Resource: https://api.onesource.io/api/chain/estimate-gas · Directory page generated 2026-11-06T14:33:38.539Z from live sources.
The facts, as last reported 2026-11-06T14:27:18.134Z: this resource answers x402 payment challenges at 0.004 USDC on Base (exact), pay to 0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea. It is reported by Coinbase CDP and its directory state is live.
What it does
Estimate the gas a transaction will consume via eth_estimateGas before signing it
Payment options
| Network | Scheme | Asset | Amount | Pay to |
|---|---|---|---|---|
| Baseeip155:8453 | exact | USDC0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 | 0.0044000 atomic | 0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea |
Verification — the enrichment record
| Verification state | facilitator-reported |
|---|---|
| Verified / reported at | 2026-11-06T14:27:18.134Z |
| Settlement recency | listing last updated 2026-11-06T13:07:58.894Z at its source |
| Freshness | live — last reported 2026-11-06T14:27:18.134Z, listing last updated at source 2026-11-06T13:07:58.894Z |
| Reporting facilitator | Coinbase CDP |
| Sources | cdp |
Call it
An unpaid call returns the live 402 challenge — that challenge, not this page, is the price quote:
curl -i "https://api.onesource.io/api/chain/estimate-gas"
Pay it with any x402 client on Base. Networks: Base