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What you pay

There is no subscription, no minimum volume and no charge for quotes you do not fill.

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How a quote is priced

The maker reads the pair’s reference mid (a Chainlink FX feed: CAD, EUR, SGD, IDR, GBP or TRY against USD) and applies its own bid or ask spread. The spread is the maker’s business and is not published as a number; the result is. Every quote carries:
  • referenceRate: the mid the quote was priced from, in human units.
  • sellAmount and buyAmount: the exact amounts of the fill. Their ratio is your all-in rate.
  • maxFirmSize: the largest amount available right now at this rate, in both tokens.
Because a quote is a signed order, the rate you see is the rate you get. There is no re-pricing between the quote and the fill, and no slippage tolerance to set.

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Levels before quotes

GET /levels returns, for every direction the makers quote, the largest size available now, its price after the spread, and the reference mid, without a key and without signing anything. Use it to show a price, to decide whether to route through Aile, and to pick a size.
Levels are indicative: only GET /quote signs. A direction with firmQuoted: false will not give a quote right now, and its reason tells you why.

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Staging limits

The staging gateway trades real assets on Base mainnet under small limits so that integrations can be tested end to end. On 8 November 2026 GET /config reported limits.maxTicketUsd 5,000, maxDailyWalletUsd 20,000 and maxDailyGlobalUsd 100,000; the live values are in GET /config.