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Overview

A quote is a derived view of pricing based on current on-chain market state. Quotes are ephemeral:
  • GET /v1/quote does not create or persist a quote entity.
  • Responses include asOf provenance and an expiresAt timestamp.

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Trade types

  • **EXACT_IN**: you specify the exact input amount; you receive the expected output amount.
  • **EXACT_OUT**: you specify the exact output amount; you receive the required input amount.
Amounts are expressed as strings in smallest units (for example, USDC with 6 decimals).

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Reading the response

Key fields in the Quote response:
  • asOf: provenance for the derived response (block reference and timestamp when available)
  • expiresAt: how long the quote should be considered valid for planning
  • amountIn / amountOut: smallest units as strings
  • fees: breakdown (when available)
  • route: routing details (implementation-defined)

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Example

curl -sS \
  -H "Authorization: Basic <base64(username:password)>" \
  "https://api.fiet.finance/v1/quote?chainId=1&tokenIn=0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48&tokenOut=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2&tradeType=EXACT_IN&amount=1000000&slippageBps=50"

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Next steps

  • Generate swap instructions: Swap