Fetching Quotes

fetchQuote returns an array of routes for a pair. By default at most two: the quickest first, then the best return. When one route is both, you get a single item.

import { fetchQuote } from "@mayanfinance/swap-sdk";

const quotes = await fetchQuote(
  {
    amountIn64: "250000000",         // base units, so 250 USDC at 6 decimals
    fromToken: fromToken.contract,
    toToken: toToken.contract,
    fromChain: "avalanche",
    toChain: "solana",
    slippageBps: "auto",
    gasDrop: 0.04,                   // optional
    referrer: "YOUR_SOLANA_ADDRESS", // optional
    referrerBps: 5,                  // optional
  },
  {
    apiKey: "YOUR_API_KEY",          // optional, second argument
  }
);

Parameters

Param	Type	Required	Notes
`amountIn64`	`string`	Yes	Base units. `amountIn` accepts a human-readable number instead.
`fromChain` / `toChain`	`string`	Yes	Chain name, not chain ID.
`fromToken` / `toToken`	`string`	Yes	Contract address. Use the zero address for native tokens.
`slippageBps`	`number \| "auto"`	Yes	`"auto"` lets Mayan pick a safe level for the pair. A number is basis points, so `300` is 3%. The response always returns a number.
`gasDrop`	`number`	No	Native gas to deliver on the destination chain. See the ceilings below.
`referrer`	`string`	No	Wallet address that receives the referrer fee.
`referrerBps`	`number`	No	Your share in basis points.
`destinationAddress`	`string`	No	Improves quote accuracy, for example by checking whether a Solana ATA exists.

As of v15, fetchQuote uses HTTP POST by default. The GET endpoint still works, but some options are POST-only, including extraInstructions and multi-wallet referrers.

Reading the response

These are the fields that matter in a confirmation screen.

Field	What it tells you
`expectedAmountOut`	The amount the user should receive.
`minAmountOut`	The floor on that amount. Part of what the user signs, so the order cannot fill below it.
`etaSeconds` / `clientEta`	Estimated settlement time, in seconds and as a display string.
`gasDrop`	Native gas delivered on the destination chain alongside the output.
`type`	The transfer method the route uses: `SWIFT`, `MCTP`, `FAST_MCTP`, or `WH`.
`swiftAuctionMode`	On Swift quotes, how the output is determined. `2` settles at or above `minAmountOut`, `3` is exact-out. See Guaranteed Price.
`gasless`	Whether the user signs a message instead of a transaction. Changes what `swapFromEvm` returns. See gasless execution.
`deadline64`	The timestamp after which the order becomes refundable rather than fillable. See refunds.
`protocolBps`	The live protocol fee for this quote. Read it rather than hardcoding.

Gas on destination ceilings

Chain	Max `gasDrop`
Ethereum	0.05 ETH
BSC	0.02 BNB
Polygon	0.2 POL
Avalanche	0.2 AVAX
Solana	0.2 SOL
Arbitrum, Optimism, Base, Unichain	0.01 ETH

See gas on destination.

Next steps

Executing Swaps

Build and send the transaction on EVM, Solana and Sui.

Guaranteed Price

What swiftAuctionMode tells you and when the amount is locked.

Quote API

The underlying endpoint, if you would rather call it directly.

GET STARTED

USE CASES

SOLUTIONS

HOW MAYAN WORKS

FEATURES

INTEGRATION

RESOURCES

AI AGENTS

Fetching Quotes

Parameters

Reading the response

Gas on destination ceilings

Next steps

Executing Swaps

Guaranteed Price

Quote API

​Parameters

​Reading the response

​Gas on destination ceilings

​Next steps

Executing Swaps

Guaranteed Price

Quote API

Parameters

Reading the response

Gas on destination ceilings

Next steps