Use Cases (Examples)

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Use case A — FIAT -> FIAT (Payout)

1. POST /quotes with railType=FIAT_FIAT
2. POST /payouts with the beneficiary details and optional quoteId
3. Receive payout.completed via webhook

Use case B — FIAT -> CRYPTO (Payment)

1. POST /quotes with railType=FIAT_CRYPTO
2. POST /payments (destination is a crypto address/handle/phone)
3. Receive payment.succeeded via webhook

Use case C — CRYPTO -> FIAT (Off-ramp payout)

1. POST /quotes with railType=CRYPTO_FIAT
2. POST /payouts with beneficiary details
3. Receive payout.completed via webhook

Use case D — CRYPTO -> CRYPTO (On-chain transfer)

1. (Optional) POST /chain/estimate-fee
2. POST /payments with railType=CRYPTO_CRYPTO
3. (If you manage signing) POST /chain/tx/broadcast with signedTx
4. Receive payment.succeeded via webhook (or poll tx status if your product does so)