_gamma API

const API_KEY = 'gma_api_...';

const res = await fetch('https://app.gma.fi/api/positions?wallet=YOUR_WALLET_PUBKEY', {
  headers: {
    'Authorization': `Bearer ${API_KEY}`,
  },
});
const { success, data, error } = await res.json();

if (!success) {
  console.error('API error:', error);
} else {
  console.log('Positions:', data.vaults);
}

import { Connection, VersionedTransaction } from '@solana/web3.js';

// 1. Fetch the unsigned transaction from our API
const response = await fetch('https://app.gma.fi/api/vault/GPZW7ihHMMfZg5eNDmn376mwVzBKHh867vdWmjvNvYPK/deposit', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    wallet: wallet.publicKey.toBase58(),
    amount: 100_000_000  // 100 USDC in lamports (6 decimals)
  })
});
const { data } = await response.json();

// 2. Decode the base64 transaction
const txBytes = Buffer.from(data.transaction, 'base64');
const transaction = VersionedTransaction.deserialize(txBytes);

// 3. Sign with your wallet
// Option A: Browser wallet (Phantom, Solflare, etc.)
const signedTx = await window.solana.signTransaction(transaction);

// Option B: Keypair (for programmatic/server use)
// import { Keypair } from '@solana/web3.js';
// const keypair = Keypair.fromSecretKey(...);
// transaction.sign([keypair]);

// 4. Send and confirm
const connection = new Connection('https://api.mainnet-beta.solana.com', 'confirmed');
const signature = await connection.sendRawTransaction(signedTx.serialize());

// 5. Wait for confirmation
const confirmation = await connection.confirmTransaction(signature, 'confirmed');
if (confirmation.value.err) {
  throw new Error('Transaction failed');
}

console.log('Transaction confirmed:', signature);
// View on Solscan: https://solscan.io/tx/${signature}

// First, check if there's a pending withdrawal to claim
const statusRes = await fetch(
  'https://app.gma.fi/api/vault/GPZW7ihHMMfZg5eNDmn376mwVzBKHh867vdWmjvNvYPK/withdraw?wallet=' + walletPubkey
);
const { data: status } = await statusRes.json();

if (status.hasPendingWithdrawal && status.canClaimNow) {
  console.log('Claiming pending withdrawal of', status.estimatedUsdcAmount, 'USDC');
}

// Request the withdrawal transaction (will be claim or initiate based on state)
const withdrawRes = await fetch('https://app.gma.fi/api/vault/GPZW7ihHMMfZg5eNDmn376mwVzBKHh867vdWmjvNvYPK/withdraw', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    wallet: walletPubkey,
    sharesAmount: 50_000_000  // Only needed for new withdrawals
  })
});
const { data } = await withdrawRes.json();

console.log('Action:', data.action); // 'initiate' or 'claim'
console.log('Message:', data.message);

// Sign and submit as shown above...