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Fiat rails inventory

How to discover Gate rail availability without hard-coding a provider.

Gate exposes fiat availability through runtime capabilities, not a static provider table.

Question Endpoint
Is the user's region eligible? GET /capabilities/eligibility
Which currencies are available? GET /capabilities/currencies
Which buy-side methods apply? GET /capabilities/payment-methods
Which sell-side methods apply? GET /capabilities/payout-methods
Is the partner entitled to direct rails? GET /dashboard/usage

The server-to-server Rails API can execute configured methods such as PIX and SPEI for an entitled partner. A method appearing in a request schema is not proof that the partner, country, currency, or environment can execute it. Query capabilities and handle feature_not_available or other authorization errors.

Rail responses include a provider field for reconciliation. Treat it as data, not routing configuration; partner integrations must remain provider-neutral.

Gate rail requests accept a GateSession and signed quote reference, not partner-supplied bank or identity data.