Solana’s SPL token ecosystem is vast, and Helius provides multiple APIs to efficiently query token data.

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Basic Token Account Information

Get balance for a specific token account using RPC:

const response = await fetch("https://mainnet.helius-rpc.com/?api-key=YOUR_API_KEY", {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: '1',
    method: 'getTokenAccountBalance',
    params: [
      '3emsAVdmGKERbHjmGfQ6oZ1e35dkf5iYcS6U4CPKFVaa'
    ]
  })
});
const data = await response.json();
console.log(data);

API Reference

getTokenAccountBalance

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Finding Token Accounts by Owner

List all token accounts owned by a wallet:

const response = await fetch("https://mainnet.helius-rpc.com/?api-key=YOUR_API_KEY", {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: '1',
    method: 'getTokenAccountsByOwner',
    params: [
      '86xCnPeV69n6t3DnyGvkKobf9FdN2H9oiVDdaMpo2MMY',
      {
        programId: 'TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA'
      },
      {
        encoding: 'jsonParsed'
      }
    ]
  })
});
const data = await response.json();
console.log(data);

API Reference

getTokenAccountsByOwner

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Finding Token Accounts by Mint

List all accounts holding a specific token:

const response = await fetch("https://mainnet.helius-rpc.com/?api-key=YOUR_API_KEY", {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: '1',
    method: 'getTokenAccountsByOwner',
    params: [
      'CEXq1uy9y15PL2Wb4vDQwQfcJakBGjaAjeuR2nKLj8dk',
      {
        mint: "8wXtPeU6557ETkp9WHFY1n1EcU6NxDvbAggHGsMYiHsB"
      },
      {
        encoding: 'jsonParsed'
      }
    ]
  })
});
const data = await response.json();
console.log(data);

API Reference

getTokenAccountsByOwner

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Getting Token Supply

Check the total supply of a token:

const response = await fetch("https://mainnet.helius-rpc.com/?api-key=YOUR_API_KEY", {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: '1',
    method: 'getTokenSupply',
    params: [
      'EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v'
    ]
  })
});
const data = await response.json();
console.log(data);

API Reference

getTokenSupply

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Finding Large Token Holders

Identify the largest accounts holding a token:

const response = await fetch("https://mainnet.helius-rpc.com/?api-key=YOUR_API_KEY", {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: '1',
    method: 'getTokenLargestAccounts',
    params: [
      'he1iusmfkpAdwvxLNGV8Y1iSbj4rUy6yMhEA3fotn9A'
    ]
  })
});
const data = await response.json();
console.log(data);

API Reference

getTokenLargestAccounts

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Advanced Token Data with DAS API

For more comprehensive token information including metadata:

const response = await fetch("https://mainnet.helius-rpc.com/?api-key=YOUR_API_KEY", {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: '1',
    method: 'getAsset',
    params: {
      id: 'EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v',
      options: {
        showFungible: true
      }
    }
  })
});
const data = await response.json();
console.log(data);

API Reference

getAsset