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Rates are sourced from available liquidity for each corridor. The quote engine selects a provider and returns an effective rate as pricing.exchange_rate (a number).

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Preview vs reserved quote

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Amounts

Exactly one of from.amount or to.amount is required. The other side is calculated, including fees. Pass optional partner_fee on quote or order requests to add your markup. Reserved quotes expire after ttl_in_seconds. Re-quote if the user waits. You can also fetch an aggregated pair rate with GET /v1/market-rates/{pair} (for example NGN_USDT).