Quoter

Quoter Class Reference

The ReadQuoter class provides a read-only interface to the Uniswap V4 Quoter contract for getting price quotes without executing transactions.

Constructor

new ReadQuoter(quoteV4Address: Address, drift: Drift<ReadAdapter>)

Parameters:

• quoteV4Address - Contract address of the V4 Quoter

• drift - Drift instance for blockchain interaction (defaults to new instance)

Methods

quoteExactInputV4

Get a price quote for swapping an exact amount of input tokens.

async quoteExactInputV4(
  params: FunctionArgs<V4QuoterABI, 'quoteExactInputSingle'>['params']
): Promise<FunctionReturn<V4QuoterABI, 'quoteExactInputSingle'>>

Parameters:

• params - Arguments for the quoteExactInputSingle contract method

Returns: Promise resolving to raw contract return values

quoteExactOutputV4

Get a price quote for receiving an exact amount of output tokens.

async quoteExactOutputV4(
  params: FunctionArgs<V4QuoterABI, 'quoteExactOutputSingle'>['params']
): Promise<FunctionReturn<V4QuoterABI, 'quoteExactOutputSingle'>>

Parameters:

• params - Arguments for the quoteExactOutputSingle contract method

Returns: Promise resolving to raw contract return values

Example Usage

import { ReadQuoter } from "doppler-v4-sdk";

// Create quoter instance
const quoter = new ReadQuoter("0x...");

// Get quote for exact input
const inputQuote = await quoter.quoteExactInputV4({
  tokenIn: "0x...",
  tokenOut: "0x...",
  amountIn: 1000000n,
  fee: 3000,
  sqrtPriceLimitX96: 0n,
});

// Get quote for exact output
const outputQuote = await quoter.quoteExactOutputV4({
  tokenIn: "0x...",
  tokenOut: "0x...",
  amountOut: 1000000n,
  fee: 3000,
  sqrtPriceLimitX96: 0n,
});

Key Features

• Price Quotes: Get accurate price quotes for both exact input and output swaps

• No Gas Required: Simulate swap outcomes without executing transactions

• V4 Compatible: Designed specifically for Uniswap V4 pools

• Type Safety: Full TypeScript support with proper type definitions