Add liquidity on Uniswap

import {
  createComposeSdk,
  guards,
  materialisers,
  resources,
} from '@lifi/composer-sdk';

// Ethereum mainnet (chainId 1).
const USDC = '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48';
const WETH = '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2';
const UNISWAP_V2_ROUTER = '0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D';
const UNISWAP_V2_FACTORY = '0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f';
const USDC_WETH_PAIR = '0xB4e16d0168e52d35CaCD2c6185b44281Ec28C9Dc';

const SIGNER = '0xYourSignerAddress';

const sdk = createComposeSdk({
  baseUrl: 'https://composer.li.quest',
  apiKey: process.env.LIFI_API_KEY!,
});

const builder = sdk.flow(1, {
  name: 'uniswap-v2-add-liquidity-usdc-weth',
  inputs: {
    usdcIn: resources.erc20(USDC, 1),
  },
});

// Halve the USDC: `a` is deposited as is, `b` is swapped to WETH.
const { a: usdcHalf, b: usdcToSwap } = builder.core.split('split', {
  bind: { source: builder.inputs.usdcIn },
  config: { bps: 5000 },
});

const swap = builder.lifi.swap('swap', {
  bind: { amountIn: usdcToSwap },
  config: {
    resourceOut: resources.erc20(WETH, 1),
    slippage: 0.03, // the swap may deliver up to 3% less WETH than quoted
  },
});

builder.uniswapV2.addLiquidity('add-liquidity', {
  bind: {
    tokenA: usdcHalf,
    tokenB: swap.amountOut,
  },
  config: {
    router: UNISWAP_V2_ROUTER,
    factory: UNISWAP_V2_FACTORY,
    pair: USDC_WETH_PAIR,
  },
  guards: [
    // Revert unless the pool price is within ±50 bps of the simulated price.
    guards.band({ port: 'poolPrice', bps: 50 }),
    // Must cover the swap's 3% tolerance plus the 50 bps band.
    guards.slippage({ port: 'liquidity', bps: 350 }),
  ],
});

const result = await builder.compile({
  signer: SIGNER,
  inputs: {
    usdcIn: materialisers.directDeposit({ amount: '2000000000' }), // 2,000 USDC
  },
  // Sends the UNI-V2 LP token and any unused USDC or WETH to the signer.
  sweepTo: builder.context.sender,
  // The default price-impact check rejects this deposit; the guards protect it.
  maxPriceImpactBps: 0,
});

for (const key of ['add-liquidity.liquidity', 'add-liquidity.residualA', 'add-liquidity.residualB']) {
  const output = result.outputs[key];
  console.log(key, output?.amount.estimate?.value, output?.amount.minimum?.value);
}

import {
  createComposeSdk,
  guards,
  materialisers,
  resources,
} from '@lifi/composer-sdk';

// Uniswap V3 USDC/WETH 0.05% pool on Ethereum mainnet (chainId 1).
const USDC = '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48';
const WETH = '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2';
const POSITION_MANAGER = '0xC36442b4a4522E871399CD717aBDD847Ab11FE88';
const FACTORY = '0x1F98431c8aD98523631AE4a59f267346ea31F984';
const USDC_WETH_500_POOL = '0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640';
// Full range: the widest ticks that are multiples of the pool's tick spacing (10).
const TICK_LOWER = -887270;
const TICK_UPPER = 887270;

const SIGNER = '0xYourSignerAddress';

const sdk = createComposeSdk({
  baseUrl: 'https://composer.li.quest',
  apiKey: process.env.LIFI_API_KEY!,
});

const builder = sdk.flow(1, {
  name: 'uniswap-v3-mint-usdc-weth',
  inputs: {
    usdc: resources.erc20(USDC, 1),
    weth: resources.erc20(WETH, 1),
  },
});

builder.uniswapV3.mint('mint', {
  bind: {
    tokenA: builder.inputs.usdc,
    tokenB: builder.inputs.weth,
    // The position NFT is minted straight to the signer, never to the proxy.
    recipient: builder.context.sender,
  },
  config: {
    positionManager: POSITION_MANAGER,
    factory: FACTORY,
    pool: USDC_WETH_500_POOL,
    fee: 500,
    tickLower: TICK_LOWER,
    tickUpper: TICK_UPPER,
  },
  guards: [
    // 25 bps on the sqrt price caps the pool price move near 50 bps.
    guards.band({ port: 'sqrtPriceX96', bps: 25 }),
    guards.slippage({ port: 'liquidity', bps: 50 }),
  ],
});

const result = await builder.compile({
  signer: SIGNER,
  inputs: {
    usdc: materialisers.directDeposit({ amount: '1000000000' }), // 1,000 USDC
    weth: materialisers.directDeposit({ amount: '500000000000000000' }), // 0.5 WETH
  },
  // Returns unused USDC or WETH to the signer.
  sweepTo: builder.context.sender,
  // Only the residuals count as priced output; the guards protect the deposit.
  maxPriceImpactBps: 0,
});

console.log('Residual USDC:', result.outputs['mint.residualA']?.amount.estimate?.value);
console.log('Residual WETH:', result.outputs['mint.residualB']?.amount.estimate?.value);