Get started

Create your first token with Doppler in as little as 10 minutes

Doppler has an open source TypeScript SDK that is officially supported.

You can install it using your favorite package manager.

Installation 

npm install @whetstone-research/doppler-sdk viem
# or
yarn add @whetstone-research/doppler-sdk viem
# or
pnpm add @whetstone-research/doppler-sdk viem

Quickstart

Start by setting up viem, a popular library used for interacting with blockchain networks.

Next, create a client for your local wallet using viem.

Lastly, initialize the Doppler SDK utilizing the viem network connection and your local wallet. 

import { DopplerSDK } from '@whetstone-research/doppler-sdk';
import { createPublicClient, createWalletClient, http } from 'viem';
import { base } from 'viem/chains';

// 1. Set up viem clients
const publicClient = createPublicClient({
  chain: base,
  transport: http(),
});

// 2. Set up your local wallet client
const walletClient = createWalletClient({
  chain: base,
  transport: http(),
  account: '0x...', // Your wallet address
});

// 3. Initialize the SDK
const sdk = new DopplerSDK({
  publicClient,
  walletClient,
  chainId: base.id,
});

Create your first token with Doppler 🎉

Use Doppler Multcurve to execute a customized token launch. 

import { MulticurveBuilder } from '@whetstone-research/doppler-sdk'
import { parseEther } from 'viem'
import { base } from 'viem/chains'

const params = new MulticurveBuilder(base.id)
  .tokenConfig({ name: 'TEST', symbol: 'TEST', tokenURI: 'https://example.com/metadata.json' })
  .saleConfig({ initialSupply: parseEther('1000000'), numTokensToSell: parseEther('900000'), numeraire: '0x4200000000000000000000000000000000000006' })
  .withMulticurveAuction({
    fee: 0, // no fees
    tickSpacing: 8,
    curves: [
      { tickLower: 0, tickUpper: 240000, numPositions: 10, shares: parseEther('0.5') },
      { tickLower: 16000, tickUpper: 240000, numPositions: 10, shares: parseEther('0.5') },
    ],
  })
  .withGovernance({ type: 'noOp' }) // no governance
  .withMigration({ type: 'noOp' }) // no migration 
  .withUserAddress('0x...') // add your address
  .build()

const result = await sdk.factory.createMulticurve(params)
console.log('Pool address:', result.poolAddress)
console.log('Token address:', result.tokenAddress)

Example configuration details

Here's is some context about what was configured with this launch.

  • Token config - metadata such as the name, symbol, and other relevant data like an image

  • Sale config - allocations of the token and how much is available for sale

  • Fees - earnings on each swap in the pool created by Doppler. Set to 0 means no fees

  • Curves - There were only two price curves defined, each with 10 unique liquidity positions

  • Governance & Migration - Using the noOp smart contract patterns for governance means that there is no token holder governance associated with this test token. Using the same noOp pattern for migration means that this token and it's generated liquidity will always "live" in the same Uniswap v4 pool that Doppler Multicurve created, for maximum simplicity.

Next steps

Continue learning more about Doppler and follow along with other examples.

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