FirstLedger Sniping

Overview

Monitor XRPL for new token launches and execute fast purchases before others.

FirstLedger Endpoints

• WebSocket: wss://xlrps-1.xrpl.link/
• REST: https://xlrps-1.xrpl.link/api/v1/

Detect New Tokens

Subscribe to Transactions

const ws = new WebSocket('wss://xlrps-1.xrpl.link/');

ws.send(JSON.stringify({
  command: 'subscribe',
  transactions: true
}));

// Watch for Payment transactions with new tokens
ws.onmessage = (msg) => {
  const tx = JSON.parse(msg.data);
  if (tx.TransactionType === 'Payment' && tx.Amount?.currency) {
    console.log('New token:', tx.Amount);
  }
};

Check Issuer Flags

// Key flags to audit before buying:
const flags = {
  lsfDisableMaster: 0x00080000,  // CANNOT mint more - SAFE
  lsfRipple: 0x00020000,         // Default ripple
  lsfDefaultRipple: 0x00040000,  // Trustline default
  lsfRequireAuth: 0x00010000      // Must be authorized
};

// SKIP if:
- lsfDisableMaster is NOT set (issuer can rug)
- No requireAuth (anyone can hold)

Execute Buy

const { Client, Wallet } = require('xrpl');
const client = new Client('wss://xrplcluster.com');

const tx = {
  TransactionType: 'Payment',
  Account: wallet.address,
  Destination: issuerAddress,
  Amount: {
    currency: tokenCode, // e.g., 'SYM123'
    issuer: issuerAddress,
    value: '100' // Amount to buy
  },
  DestinationTag: 1 // For tracking
};

const result = await client.submit(tx, { wallet });

Safety Checks

✅ MUST VERIFY: 1. lsfDisableMaster flag set (no more minting) 2. Contract ownership renounced 3. Liquidity added (check trustlines) 4. Not a honeypot (can sell after buying)

❌ SKIP IF: - No audit - No liquidity - Non-renounced contract

Risk Profile

• High risk - Only trade what you can lose
• Always audit token flags before buying
• Keep XRP reserve for fees (~10 XRP)