poly-weather/scripts/derive-keys.ts

/**
 * Derive L2 API keys from your Polymarket wallet.
 *
 * Usage:
 *   pnpm derive-keys
 *
 * Prerequisites:
 *   - Set PRIVATE_KEY in .env (your Polymarket signer key)
 *   - Set FUNDER_ADDRESS in .env (your Polymarket proxy wallet)
 *   - Set SIGNATURE_TYPE in .env (1 for POLY_PROXY)
 *
 * This script will:
 *   1. Create a ClobClient with your wallet
 *   2. Call /auth/derive-api-key to get L2 API credentials
 *   3. Print the credentials so you can add them to .env
 */

import { ClobClient } from '@polymarket/clob-client';
import { Wallet } from '@ethersproject/wallet';

const CLOB_HOST = 'https://clob.polymarket.com';
const CHAIN_ID = 137;

async function main() {
  const privateKey = process.env['PRIVATE_KEY'];
  const funderAddress = process.env['FUNDER_ADDRESS'];
  const signatureType = parseInt(process.env['SIGNATURE_TYPE'] || '1', 10);

  if (!privateKey) {
    console.error('❌ PRIVATE_KEY not set in .env');
    console.error('   Export your key from Polymarket: Settings > Export Private Key');
    process.exit(1);
  }

  if (!funderAddress) {
    console.error('❌ FUNDER_ADDRESS not set in .env');
    console.error('   This is your Polymarket deposit/proxy wallet address');
    process.exit(1);
  }

  const wallet = new Wallet(privateKey);

  console.log('🔑 Deriving L2 API keys from your Polymarket wallet...\n');
  console.log(`  Signer:         ${wallet.address}`);
  console.log(`  Funder:         ${funderAddress}`);
  console.log(`  Signature Type: ${signatureType} (${signatureType === 1 ? 'POLY_PROXY' : 'EOA'})`);
  console.log();

  try {
    const client = new ClobClient(
      CLOB_HOST,
      CHAIN_ID,
      wallet,
      undefined,        // creds — will be derived
      signatureType,
      funderAddress,
    );

    const creds = await client.createOrDeriveApiKey();

    console.log('✅ L2 API keys derived successfully!\n');
    console.log('Add these to your .env file:\n');
    console.log(`L2_API_KEY=${creds.key}`);
    console.log(`L2_API_SECRET=${creds.secret}`);
    console.log(`L2_API_PASSPHRASE=${creds.passphrase}`);
    console.log();
    console.log('⚠️  Keep these secret! Do not commit .env to git.');
  } catch (err) {
    console.error('❌ Failed to derive API keys:', err);
    process.exit(1);
  }
}

main();