Use when an agent or developer needs Sepolia test ETH now, without a faucet login or mainnet history. Input: to (recipient address). Output: JSON txHash (confirmed before settling), blockNumber, explorerUrl, 0.1 SepETH, from, to, nonce. Limits per UTC day: 1 SepETH (10 calls) per address, 20 overall, plus stock; all checked before payment. Test ETH has no monetary value. Example: ?to=0x000000000000000000000000000000000000dEaD