### Quick Start: Solana Sandwich Bot Setup

Source: https://context7.com/cryptoking-max/solana-sandwich-bot/llms.txt

Provides the sequence of commands to set up and launch the Solana sandwich bot. Includes cloning the repository, installing dependencies, configuring the .env file, and starting the bot.

```bash
# Clone repository
git clone https://github.com/cryptoking-max/solana-sandwich-bot.git
cd solana-sandwich-bot

# Install dependencies
npm install

# Configure environment
cp .env.example .env
# Edit .env with your RPC URLs and wallet private key

# Start the bot
npm start

# Alternative run modes:
node src/index.js --simulate  # Dry run mode (no transactions)
node src/index.js --notify    # Enable Telegram alerts
```

--------------------------------

### Install Solana Sandwich Bot (Bash)

Source: https://github.com/cryptoking-max/solana-sandwich-bot/wiki/Home

Instructions for cloning the repository, navigating to the directory, and installing project dependencies using npm.

```bash
git clone https://github.com/cryptoking-max/solana-sandwich-bot
cd solana-sandwich-bot
npm install
```

--------------------------------

### Configuration Example (.env)

Source: https://github.com/cryptoking-max/solana-sandwich-bot/wiki/🧩-Key-Features-of-the-Solana-Sandwich-Bot

This snippet shows an example of a .env configuration file for the Solana Sandwich Bot. It includes essential parameters like RPC URL, private key, slippage tolerance, and minimum swap amount required for bot operation.

```dotenv
RPC_URL=
PRIVATE_KEY=
SLIPPAGE=
MIN_SWAP_AMOUNT=
```

--------------------------------

### Launch Solana MEV Bot

Source: https://github.com/cryptoking-max/solana-sandwich-bot/blob/main/README.md

This command starts the Solana MEV sandwich bot after dependencies are installed and the environment is configured. Ensure your .env file contains all required credentials and settings.

```bash
npm start
```

--------------------------------

### Initialize and Start Sandwich Bot (Node.js)

Source: https://context7.com/cryptoking-max/solana-sandwich-bot/llms.txt

Initializes the main SandwichBot class and starts its operation. The bot reads configuration from environment variables such as RPC URLs, wallet private key, profit thresholds, slippage limits, and gas priority.

```javascript
const { Connection, Keypair } = require('@solana/web3.js');
const { Helius } = require('@helius-labs/helius-sdk');
require('dotenv').config();

// Initialize and start the sandwich bot
const bot = new SandwichBot();

// Bot automatically configures from environment variables:
// - HELIUS_RPC_URL: Primary RPC endpoint
// - NOZOMI_RPC_URL: Secondary RPC endpoint
// - WALLET_PRIVATE_KEY: Base64 encoded private key
// - MIN_PROFIT_THRESHOLD: Minimum profit in SOL (default: 0.5)
// - MAX_SLIPPAGE: Maximum slippage percentage (default: 1.0)
// - GAS_PRIORITY: Priority fee in micro-lamports (default: 100)

bot.start()
  .then(() => console.log('Bot running'))
  .catch((error) => {
    console.error('Fatal error:', error);
    process.exit(1);
  });
```

--------------------------------

### Install Node.js Dependencies for Solana Bot

Source: https://github.com/cryptoking-max/solana-sandwich-bot/blob/main/README.md

This command installs all the necessary Node.js dependencies for the Solana MEV bot. Ensure you have Node.js and npm (or yarn) installed and are in the project's root directory.

```bash
npm install
```

--------------------------------

### Listen to Jito Mempool Bundles (Python)

Source: https://github.com/cryptoking-max/solana-sandwich-bot/wiki/How-to-create-solana-sandwich-mev-bot?

This snippet demonstrates how to subscribe to Jito's mempool bundle feed using a hypothetical `jito_client`. It iterates through incoming bundles and their transactions, providing a starting point for detecting potential victim trades.

```python
from jito_client import MempoolClient

client = MempoolClient()
for bundle in client.subscribe_bundles():
    for tx in bundle.transactions:
        # Check for large token buys/sells
        pass
```

--------------------------------

### Configure Solana Sandwich Bot (.env)

Source: https://github.com/cryptoking-max/solana-sandwich-bot/wiki/Home

Example of a .env file for configuring the Solana Sandwich Bot. It includes placeholders for private keys, RPC URLs, API endpoints, slippage, minimum swap amounts, and Telegram integration details.

```dotenv
PRIVATE_KEY=your_private_key_base58
RPC_URL=https://your-private-rpc
JUPITER_API=https://quote-api.jup.ag/v6
SLIPPAGE=0.5
MIN_SWAP_AMOUNT=1000
TELEGRAM_BOT_TOKEN=your_token
TELEGRAM_CHAT_ID=your_chat_id
```

--------------------------------

### Configure Solana Bot Environment Variables

Source: https://github.com/cryptoking-max/solana-sandwich-bot/blob/main/README.md

This command copies the example environment file to a new file named .env, which should then be edited with your specific configuration details, such as RPC endpoints and wallet private keys. This step is crucial for the bot's operation.

```bash
cp .env.example .env
# Edit .env with your configuration
```

--------------------------------

### Clone Solana MEV Bot Repository

Source: https://github.com/cryptoking-max/solana-sandwich-bot/blob/main/README.md

This command clones the Solana MEV bot repository from GitHub and navigates into the project directory. It requires Git to be installed on your system.

```bash
git clone https://github.com/cryptoking-max/solana-sandwich-bot.git
cd solana-sandwich-bot
```

--------------------------------

### Environment Configuration (.env file)

Source: https://context7.com/cryptoking-max/solana-sandwich-bot/llms.txt

Configures bot behavior through environment variables. Includes settings for RPC endpoints, wallet private key, trading parameters like profit threshold and slippage, logging level, and target DEXes.

```bash
# .env configuration file

# Required RPC endpoints
HELIUS_RPC_URL=https://mainnet.helius-rpc.com/?api-key=YOUR_KEY
NOZOMI_RPC_URL=https://nozomi.solana.com

# Wallet configuration (Base64 encoded private key)
WALLET_PRIVATE_KEY=base64EncodedPrivateKey...

# Trading parameters
MIN_PROFIT_THRESHOLD=0.5    # Minimum profit in SOL to execute
MAX_SLIPPAGE=1.0            # Maximum slippage percentage
GAS_PRIORITY=100            # Priority fee in micro-lamports

# Logging
LOG_LEVEL=info              # Options: error, warn, info, debug

# Target DEXes (comma-separated)
TARGET_DEXES=RAYDIUM,ORCA,JUPITER
```

--------------------------------

### Execute Front-Run Transaction (JavaScript)

Source: https://github.com/cryptoking-max/solana-sandwich-bot/wiki/⚙️-How-It-Works-(Solana-Sandwich-Bot-‐-Node.js)

This code illustrates how to construct and send a front-run transaction on Solana. It involves creating a new transaction, adding instructions, setting the fee payer, obtaining the latest blockhash, signing the transaction, and sending it to the network with pre-flight checks skipped for speed. This is a critical step in placing the initial buy order before the victim's transaction.

```javascript
const { Connection, Transaction, PublicKey } = require('@solana/web3.js');

const connection = new Connection('YOUR_RPC_ENDPOINT'); // Replace with your RPC endpoint
const yourPublicKey = new PublicKey('YOUR_PUBLIC_KEY'); // Replace with your wallet's public key

async function getLatestBlockhash() {
  const { lastValidBlockhash } = await connection.getLatestBlockhash();
  return lastValidBlockhash;
}

async function executeFrontRun() {
  try {
    // Assume 'instructions' is an array of Solana instructions for the buy transaction
    const instructions = []; // Populate with actual swap instructions
    const transaction = new Transaction().add(...instructions);
    transaction.feePayer = yourPublicKey;
    transaction.recentBlockhash = await getLatestBlockhash();

    // Sign the transaction (requires your wallet's private key or a wallet adapter)
    // transaction.sign(...);

    const serializedTx = transaction.serialize();
    const txid = await connection.sendRawTransaction(serializedTx, { skipPreflight: true });
    console.log(`Front-run transaction sent: ${txid}`);
    // Monitor transaction status
  } catch (error) {
    console.error('Error executing front-run:', error);
  }
}

// executeFrontRun(); // Uncomment to run
```

--------------------------------

### Simulate Front-Run with Jupiter Quote API (JavaScript)

Source: https://github.com/cryptoking-max/solana-sandwich-bot/wiki/⚙️-How-It-Works-(Solana-Sandwich-Bot-‐-Node.js)

This snippet demonstrates how to simulate a front-run trade using the Jupiter Quote API. It queries for the best quote for a given input token, output token, and amount, considering slippage. This is crucial for estimating potential profitability before executing trades.

```javascript
const axios = require('axios');

const SOL = 'So11111111111111111111111111111111111111112';
const targetToken = 'EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEWWJiLsDpWR9'; // Example: USDC
const frontRunAmount = 1000; // Example amount in SOL

async function simulateFrontRun() {
  try {
    const res = await axios.get(`https://quote-api.jup.ag/v6/quote`, {
      params: {
        inputMint: SOL,
        outputMint: targetToken,
        amount: frontRunAmount,
        slippage: 0.5
      }
    });
    console.log('Simulation Result:', res.data);
    // Further logic to analyze price impact and back-run profitability
  } catch (error) {
    console.error('Error simulating front-run:', error);
  }
}

simulateFrontRun();
```

--------------------------------

### Create Swap Transaction with DexManager

Source: https://context7.com/cryptoking-max/solana-sandwich-bot/llms.txt

Creates a swap transaction for a specified DEX (Raydium, Orca, Jupiter) with configurable parameters including input/output tokens, amount, minimum output for slippage protection, and priority fees. Supports automatic routing.

```javascript
const swapTx = await dexManager.createSwapTransaction({
  dex: 'RAYDIUM',           // Target DEX: RAYDIUM, ORCA, or JUPITER
  inputToken: 'SOL',         // Input token mint
  outputToken: 'USDC',       // Output token mint
  amount: 1000000000,        // Amount in lamports
  minOutput: 950000000,      // Minimum output (slippage protection)
  priorityFee: 100000        // Priority fee in micro-lamports
});
```

--------------------------------

### Submit Transaction Bundle to Jito (Python)

Source: https://github.com/cryptoking-max/solana-sandwich-bot/wiki/How-to-create-solana-sandwich-mev-bot?

This pseudo-code illustrates the process of submitting a crafted transaction bundle to Jito. The bundle typically includes a front-running transaction, the victim's transaction, and a back-running transaction, all ordered to maximize profit.

```python
# pseudo-code
bundle = [
    front_run_tx,
    victim_tx,
    back_run_tx,
]
jito.submit_bundle(bundle)
```

--------------------------------

### Run Solana Sandwich Bot (Bash)

Source: https://github.com/cryptoking-max/solana-sandwich-bot/wiki/Home

Commands to run the Solana Sandwich Bot. Includes options for enabling Telegram alerts and running in dry run mode for simulation without executing transactions.

```bash
# Run the bot normally
node index.js

# Enable Telegram alerts
node index.js --notify

# Run in dry run mode (simulation only)
node index.js --simulate
```

--------------------------------

### Structured Logging with Logger Module

Source: https://context7.com/cryptoking-max/solana-sandwich-bot/llms.txt

Provides structured logging capabilities with custom methods for sandwich-specific events, profit tracking, and error handling. Supports file rotation for error and combined logs, as well as console output.

```javascript
const logger = require('./src/logger');

// Standard logging
logger.info('Bot started');
logger.debug('Processing transaction', { signature: '5KtP...' });
logger.error('Transaction failed', new Error('Timeout'));

// Custom sandwich logging methods
logger.logSandwich({
  frontRunSignature: '5KtP...',
  backRunSignature: '7YmQ...',
  targetTx: '9AbC...',
  profit: '0.05 SOL'
});

logger.logProfit({
  totalProfit: '1.5 SOL',
  trades: 15,
  successRate: '80%'
});

logger.logMempool({
  txCount: 150,
  swapTxCount: 23,
  candidatesFound: 3
});

logger.logError(error, {
  context: 'frontRunExecution',
  txSignature: '5KtP...'
});
```

--------------------------------

### Analyze Swap Transaction with DexManager

Source: https://context7.com/cryptoking-max/solana-sandwich-bot/llms.txt

Analyzes a pending transaction to identify potential swap opportunities and estimate sandwich profit. The analysis includes details about tokens, amounts, slippage, pool liquidity, and estimated profit.

```javascript
const swapAnalysis = await dexManager.analyzeSwapTransaction(pendingTx);

if (swapAnalysis) {
  console.log('DEX:', swapAnalysis.dex);
  console.log('Profit Estimate:', swapAnalysis.profitEstimate.toString());

  // Analysis includes:
  // - Input/output token identification
  // - Swap amount and slippage tolerance
  // - Pool liquidity information
  // - Estimated sandwich profit
}
```

--------------------------------

### DexManager for Multi-DEX Integration (Node.js)

Source: https://context7.com/cryptoking-max/solana-sandwich-bot/llms.txt

Manages integration with multiple Decentralized Exchanges (DEXs) on Solana, including Raydium, Orca, and Jupiter. It's used for analyzing swap transactions and constructing swap instructions across these protocols.

```javascript
const DexManager = require('./src/dex');

const dexManager = new DexManager(connection, wallet);

// Supported DEX program IDs:
// RAYDIUM: '675kPX9MHTjS2zt1qfr1NYHuzeLXfQM9H24wFSUt1Mp8'
// ORCA: '9W959DqEETiGZocYWCQPaJ6sBmUzgfxXfqGeTEdp3aQP'
// JUPITER: 'JUP4Fb2cqiRUcaTHdrPC8h2gNsA2ETXiPDD33WcGuJB'

// Analyze a pending swap transaction
const analysis = await dexManager.analyzeSwapTransaction(tx);
// Returns: { swapInfo, profitEstimate, dex }
```

--------------------------------

### Execute Sandwich Attack (Node.js)

Source: https://context7.com/cryptoking-max/solana-sandwich-bot/llms.txt

Executes a complete sandwich attack by submitting front-run and back-run transactions around a target victim transaction. It returns the signatures of the executed transactions and the calculated profit.

```javascript
// Execute a sandwich attack
const result = await bot.executeSandwich(
  targetTx,           // The victim transaction to sandwich
  frontRunAmount,     // Amount for front-run buy
  backRunAmount       // Amount for back-run sell
);

// Returns execution result:
// {
//   frontRunSignature: "5KtP...",  // Front-run transaction signature
//   backRunSignature: "7YmQ...",   // Back-run transaction signature
//   profit: BigNumber              // Calculated profit from sandwich
// }

// Example sandwich execution flow:
// 1. Front-run: Buy target token before victim
// 2. Wait: Victim transaction pushes price up
// 3. Back-run: Sell token at higher price for profit
```

--------------------------------

### Subscribe to Mempool for Transaction Monitoring (Node.js)

Source: https://context7.com/cryptoking-max/solana-sandwich-bot/llms.txt

Subscribes to pending transactions on the Solana mempool using the Helius SDK. Each pending transaction is then passed to the `analyzeTransaction` method for further processing. This function is crucial for real-time monitoring of potential arbitrage opportunities.

```javascript
// Internal subscription to mempool via Helius
async subscribeToMempool() {
  await this.helius.onPendingTransaction(
    async (tx) => {
      try {
        await this.analyzeTransaction(tx);
      } catch (error) {
        logger.error('Error analyzing transaction:', error);
      }
    },
    { commitment: 'processed' }
  );

  logger.info('Subscribed to mempool successfully');
}

// The subscription continuously monitors for:
// - Large swap transactions on supported DEXes
// - Transactions with exploitable slippage settings
// - High-value trades that could yield profitable sandwiches
```

--------------------------------

### Send Signed Transaction to Solana Network (Node.js)

Source: https://context7.com/cryptoking-max/solana-sandwich-bot/llms.txt

Sends a signed transaction to the Solana network. It optimizes for speed by skipping preflight checks and includes automatic retry logic for robustness. The function also handles setting the recent blockhash and fee payer.

```javascript
async sendTransaction(transaction) {
  // Get latest blockhash for transaction validity
  transaction.recentBlockhash = (
    await this.heliusConnection.getLatestBlockhash()
  ).blockhash;

  // Set fee payer and sign
  transaction.feePayer = this.wallet.publicKey;
  transaction.sign(this.wallet);

  // Send with speed optimizations
  const signature = await this.heliusConnection.sendRawTransaction(
    transaction.serialize(),
    {
      skipPreflight: true,  // Skip simulation for speed
      maxRetries: 3         // Auto-retry on failure
    }
  );

  return signature;
}
```

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