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What you need

  • Solana wallet with some SOL for transaction fees
  • Know how to sign transactions with your wallet

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Step 1: Check the API is up

curl -X GET https://api.zcombinator.io/health
Expected response: 
{
  "status": "healthy",
  "timestamp": "2024-01-15T10:30:00.000Z",
  "environment": {
    "hasRPC": true,
    "hasConfig": true,
    "hasDB": true
  }
}

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Step 2: Create your token

Send your token details to get an unsigned transaction: 
const launchData = {
  name: "My Token",
  symbol: "MTK",
  description: "A test token for demonstration",
  image: "https://example.com/token-image.png",
  website: "https://example.com",
  twitter: "https://twitter.com/mytoken",
  caEnding: "MTK", // Optional: vanity address ending
  payerPublicKey: "YOUR_WALLET_PUBLIC_KEY",
  quoteToken: "SOL" // Optional: "SOL" (default) or "ZC" (native launchpad token)
};

const response = await fetch('https://api.zcombinator.io/launch', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json'
  },
  body: JSON.stringify(launchData)
});

const result = await response.json();

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Step 3: Sign it

We give you back an unsigned transaction. Sign it with your wallet: 
import { Transaction } from '@solana/web3.js';
import bs58 from 'bs58';

// Deserialize the transaction
const transactionBuffer = bs58.decode(result.transaction);
const transaction = Transaction.from(transactionBuffer);

// Sign with your wallet (example using Phantom)
const signedTransaction = await window.solana.signTransaction(transaction);
const signedTransactionBase58 = bs58.encode(signedTransaction.serialize());

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Step 4: Send it back

Send the signed transaction back to us and we’ll put it on Solana: 
const confirmData = {
  signedTransaction: signedTransactionBase58,
  baseMint: result.baseMint,
  metadataUrl: result.metadataUrl,
  name: "My Token",
  symbol: "MTK",
  payerPublicKey: "YOUR_WALLET_PUBLIC_KEY"
};

const confirmResponse = await fetch('https://api.zcombinator.io/confirm-launch', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json'
  },
  body: JSON.stringify(confirmData)
});

const confirmResult = await confirmResponse.json();
console.log('Token launched!', confirmResult.transactionSignature);

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Step 5: Check it worked

const verifyResponse = await fetch(`https://api.zcombinator.io/verify-token/${confirmResult.baseMint}`);
const verification = await verifyResponse.json();

if (verification.exists) {
  console.log('Token launched!');
} else {
  console.log('Something went wrong');
}

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What’s next

Claim your daily tokens

Get your 1M tokens every 24 hours.

Integration examples

See how to build this into your app.

Error handling

What to do when things go wrong.

Rate limits

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