Memecoin SDK Documentation

The Memecoin SDK provides a powerful interface for interacting with Memecoin smart contracts, accessing token data, and executing token trades. Designed with flexibility in mind, the SDK can be used both in standalone applications and within React projects.

Installation

Install the Memecoin SDK and required peer dependencies:

yarn add @memecoin/sdk

or

bun add @memecoin/sdk

You'll also need the following peer dependencies:

yarn add react react-dom @tanstack/react-query wagmi viem

---

Quick Start

To initialize and configure the SDK, create a new MemecoinSDK instance:

import { MemecoinSDK } from '@memecoin/sdk'
import { createWalletClient, http } from 'viem'
import { privateKeyToAccount } from 'viem/accounts'

const sdk = new MemecoinSDK({
  rpcUrl: 'https://base-mainnet.g.alchemy.com/v2/API_KEY',
  privateKey: PRIVATE_KEY // Optional, only needed for write operations
})

Core Methods

The SDK provides methods for accessing coin information, estimating and executing trades, and creating or launching tokens.

Get Coin Information

const coin = await sdk.getCoin(1) // Fetch by coin ID

Get Trending Coins

const trendingCoins = await sdk.getTrending()

Estimate Buy

Estimate the amount of tokens received from a buy order:

const amountOut = await sdk.estimateBuy({
  coin,
  using: 'eth',
  amountIn: BigInt(10000000000000000)
})

Buy Tokens

Execute a buy transaction for a specific coin:

const transactionHash = await sdk.buy({
  coin,
  using: 'eth',
  amountIn: BigInt(10000000000000000),
  slippage: 5 // Optional, 5% slippage
})

Estimate Sell

Estimate the amount of ETH received from a sell order:

const amountOut = await sdk.estimateSell({
  coin,
  using: 'eth',
  amountIn: BigInt(50000000000000000)
})

Sell Tokens

Execute a sell transaction for a specific coin:

const transactionHash = await sdk.sell({
  coin,
  using: 'eth',
  amountIn: BigInt(50000000000000000),
  slippage: 5 // Optional, 5% slippage
})

Launch a Coin

Launch a newly generated token:

const { contractAddress, txHash } = await sdk.launch({
  name: 'New Meme',
  ticker: 'NMEME',
  antiSnipeAmount: BigInt(1000000000000000),
  image: 'https://example.com/image.png',
  website: 'https://example.com'
})

---

React Integration with MemecoinProvider

For React applications, the SDK can be integrated using the MemecoinProvider context. This provides easy access to the SDK methods throughout the component tree.

Provider Setup

In your root component:

import { MemecoinProvider } from '@memecoin/sdk';
import { WagmiConfig } from 'wagmi';
import { useMemo } from 'react';

const rpcUrl = 'https://base-mainnet.g.alchemy.com/v2/demo';

function App({ children }) {
  return (
    <MemecoinProvider rpcUrl={rpcUrl}>
      {children}
    </MemecoinProvider>
  );
}

Accessing SDK Methods

Inside any component, you can access SDK methods using the useMemecoin hook:

import { useMemecoin } from '@memecoin/sdk';

function CoinInfo() {
  const { getCoin, getTrending } = useMemecoin();

  useEffect(() => {
    async function fetchCoin() {
      const coin = await getCoin(1);
      console.log('Fetched coin:', coin);
    }

    fetchCoin();
  }, [getCoin]);

  return <div>Check console for coin data</div>;
}

Example: Buying a Coin

function BuyCoin({ coinId }) {
  const { getCoin, buy } = useMemecoin();

  const handleBuy = async () => {
    const coin = await getCoin(coinId);
    const transactionHash = await buy({
      coin,
      amountIn: BigInt(10000000000000000),
      amountOut: BigInt(50000000000000000)
    });
    console.log('Transaction Hash:', transactionHash);
  };

  return <button onClick={handleBuy}>Buy Coin</button>;
}

---

Testing

The SDK includes vitest tests to validate its functionality. Each test is configured with specific conditions and uses mock data.

API Reference

getCoin(id: EthAddress | number): Promise<HydratedCoin>

Fetches a coin by its ID or Ethereum address.

getTrending(): Promise<HydratedCoin[]>

Retrieves a list of trending Memecoins.

estimateBuy(params: EstimateTradeParams): Promise<bigint>

Estimates the token amount received for a given ETH input.

buy(params: TradeBuyParams): Promise<HexString>

Executes a buy transaction on either Uniswap or the Memecoin pool.

estimateSell(params: EstimateTradeParams): Promise<bigint>

Estimates the ETH amount received for a given token input.

sell(params: TradeSellParams): Promise<HexString>

Executes a sell transaction on either Uniswap or the Memecoin pool.

generateCoin(params: GenerateCoinParams): Promise<GenerateMemecoinFromPhraseResponse>

Generates a new Memecoin based on a given prompt.

launch(params: LaunchCoinParams): Promise<[EthAddress, HexString]>

Launches a newly generated Memecoin with specified properties.

---

Local testing

To link locally and test

1. install yalc

npm install -g yalc

2. build and publish the local package

bun run build
yalc publish

3. in the project you want to test against, link the local package

yalc add @memecoin/sdk
bun install

4. if you make changes to the local package, run yalc publish again

yalc publish --push

install dependencies

bun install