EFUEL prepaid execution credit API — issue wallet-bound SML ECHO Fuel execution credits after exact canonical x402 Base/USDC settlement; $1-$100 per call, 1 USDC = 100 EFUEL, non-transferable.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $1.00 USDC | 0xc291...dc46 |