♋Cross Chain Queries

Learn how you can do cross-chain queries using Airstack GraphQL API to fetch data more efficiently in a single request.

In GraphQL, you can call multiple queries in parallel in a single request as shown in Multiple Queries Execution.

As Airstack is a GraphQL API, it inherits this feature that enables you to call multiple APIs in one request, which is particularly useful for building cross-chain queries to fetch data across multiple Airstack-supported chains:

Try Demo

https://app.airstack.xyz/query/3eBk5PMyBM

Show ERC20 tokens on Ethereum, Base, and Zora owned by users

Code

Query

query ERC20OwnedByLensProfiles {
  Ethereum: TokenBalances( # first query fetch Ethereum ERC20 balance
    input: {
      filter: {
        owner: {
          _in: [
            "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
            "vitalik.eth"
            "lens/@vitalik"
            "fc_fname:vitalik"
          ]
        }
        tokenType: { _eq: ERC20 }
      }
      blockchain: ethereum
      limit: 50
    }
  ) {
    TokenBalance {
      formattedAmount
      tokenAddress
      token {
        name
        symbol
      }
    }
  }
  Base: TokenBalances( # second query fetch Base ERC20 balance
    input: {
      filter: {
        owner: {
          _in: [
            "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
            "vitalik.eth"
            "lens/@vitalik"
            "fc_fname:vitalik"
          ]
        }
        tokenType: { _eq: ERC20 }
      }
      blockchain: base
      limit: 50
    }
  ) {
    TokenBalance {
      formattedAmount
      tokenAddress
      token {
        name
        symbol
      }
    }
  }
  Zora: TokenBalances( # third query fetch Zora ERC20 balance
    input: {
      filter: {
        owner: {
          _in: [
            "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
            "vitalik.eth"
            "lens/@vitalik"
            "fc_fname:vitalik"
          ]
        }
        tokenType: { _eq: ERC20 }
      }
      blockchain: zora
      limit: 50
    }
  ) {
    TokenBalance {
      formattedAmount
      tokenAddress
      token {
        name
        symbol
      }
    }
  }
}

Response

{
  "data": {
    "Ethereum": {
      "TokenBalance": [
        {
          "formattedAmount": 10860.787005472,
          "tokenAddress": "0x6390ee51738652b4f22c20f0fd02275cbd5ff685",
          "token": {
            "name": "From Vitalik",
            "symbol": "Vitalik"
          }
        }
        // Other Ethereum ERC20s
      ]
    },
    "Base": {
      "TokenBalance": [
        {
          "formattedAmount": 1420,
          "tokenAddress": "0x4ed4e862860bed51a9570b96d89af5e1b0efefed",
          "token": {
            "name": "Degen",
            "symbol": "DEGEN"
          }
        }
        // Other Base ERC20s
      ]
    },
    "Zora": {
      "TokenBalance": [
        {
          "formattedAmount": 100,
          "tokenAddress": "0x6c99db030dcc2c4d2e464c481812db078f4b30cc",
          "token": {
            "name": "ZOO",
            "symbol": "zoo"
          }
        }
        // Other Zora ERC20s
      ]
    }
  }
}

Developer Support

If you have any questions or need help regarding adding variables into your Airstack query, please join our Airstack's Telegram group.

More Resources

• API Overview

• Variables Guides

• Direct API Call

• Multiple Queries Execution

• TokenBalances API References