{"service":"UTEXO Signet Faucet","network":"signet","unit":"BTC","max_amount":100.0,"default_amount":100.0,"usage":"POST /send with JSON {address, amount}; GET /send?address=tb1...&amount=100 also supported","idempotency":"Use a unique Idempotency-Key header and reuse it for retries.","limits":{"ip_seconds":3600,"address_seconds":86400,"rolling_24h_btc":1000.0}}