🤝Tokens In Common

Learn how to fetch ERC20, NFTs, or POAPs in common from multiple Farcaster users.

Airstack provides easy-to-use APIs for enriching Farcaster applications and for integrating onchain and offchain data with Farcaster.

In this tutorial, you will learn how to fetch ERC20, NFTs, or POAPs in common from multiple Farcaster users.

In this guide you will learn how to use Airstack to:

• ERC20 Tokens In Common Owned By Farcaster User(s)

• NFTs In Common Owned By Farcaster User(s)

• POAPs Tokens In Common Owned By Farcaster User(s)

Pre-requisites

• An Airstack account (free)

• Basic knowledge of GraphQL

Get Started

JavaScript/TypeScript/Python

If you are using JavaScript/TypeScript or Python, Install the Airstack SDK:

npm

React

npm install @airstack/airstack-react

Node

npm install @airstack/node

yarn

React

yarn add @airstack/airstack-react

Node

yarn add @airstack/node

pnpm

React

pnpm install @airstack/airstack-react

Node

pnpm install @airstack/node

pip

pip install airstack asyncio

Then, add the following snippets to your code:

React

import { init, useQuery } from "@airstack/airstack-react";

init("YOUR_AIRSTACK_API_KEY");

const query = "YOUR_QUERY"; // Replace with GraphQL Query

const Component = () => {
  const { data, loading, error } = useQuery(query);

  if (loading) {
    return <p>Loading...</p>;
  }

  if (error) {
    return <p>Error: {error.message}</p>;
  }

  // Render your component using the data returned by the query
};

Node

import { init, fetchQuery } from "@airstack/airstack-react";

init("YOUR_AIRSTACK_API_KEY");

const query = "YOUR_QUERY"; // Replace with GraphQL Query

const { data, error } = fetchQuery(query);

console.log("data:", data);
console.log("error:", error);

Python

import asyncio
from airstack.execute_query import AirstackClient

api_client = AirstackClient(api_key="YOUR_AIRSTACK_API_KEY")

query = "YOUR_QUERY" # Replace with GraphQL Query

async def main():
    execute_query_client = api_client.create_execute_query_object(
        query=query)

    query_response = await execute_query_client.execute_query()
    print(query_response.data)

asyncio.run(main())

Other Programming Languages

To access the Airstack APIs in other languages, you can use https://api.airstack.xyz/gql as your GraphQL endpoint.

🤖 AI Natural Language​

Airstack provides an AI solution for you to build GraphQL queries to fulfill your use case easily. You can find the AI prompt of each query in the demo's caption or title for yourself to try.

Airstack AI (Demo)

ERC20 Tokens In Common Owned By Farcaster User(s)

You can fetch common ERC20 tokens of multiple Farcaster user(s):

Try Demo

https://app.airstack.xyz/query/QIFCtkidcx

Show common ERC20 tokens of two Farcaster users

Code

Query

query MyQuery {
  TokenBalances(
    input: {filter: {owner: {_eq: "fc_fname:betashop.eth"}, tokenType: {_eq: ERC20}}, blockchain: polygon}
  ) {
    TokenBalance {
      token {
        tokenBalances(
          input: {filter: {owner: {_eq: "fc_fname:sarvesh"}, tokenType: {_eq: ERC20}}}
        ) {
          id
          token {
            address
            symbol
            name
          }
        }
      }
    }
  }
}

Response

{
  "data": {
    "TokenBalances": {
      "TokenBalance": [
        {
          "token": {
            "tokenBalances": [
              {
                "id": "51012959a2b4c04f8dba7ef03eff0ded99c7892e8367d023680d66825287fbba",
                "token": {
                  "address": "0xef556c61263135ad91a27c8c891e61e521560240",
                  "symbol": "usd-rewards.xyz",
                  "name": "USD"
                }
              }
            ]
          }
        },
        {
          "token": {
            "tokenBalances": [] // Owned by betashop.eth, but not owned by sarvesh
          }
        }
      ]
    }
  }
}

NFTs In Common Owned By Farcaster User(s)

You can fetch common NFTs of multiple Farcaster user(s):

Try Demo

https://app.airstack.xyz/DTyOZg/chCICTPZo6

Show common NFTs of two Farcaster users

Code

Query

query MyQuery {
  TokenBalances(
    input: {filter: {owner: {_eq: "fc_fname:betashop.eth"}, tokenType: {_in: [ERC721, ERC1155]}}, blockchain: polygon}
  ) {
    TokenBalance {
      token {
        tokenBalances(
          input: {filter: {owner: {_eq: "fc_fname:sarvesh"}, tokenType: {_in: [ERC721, ERC1155]}}}
        ) {
          id
          token {
            address
            symbol
            name
          }
        }
      }
    }
  }
}

Response

{
  "data": {
    "TokenBalances": {
      "TokenBalance": [
        {
          "token": {
            "tokenBalances": [
              {
                "id": "05c4cece4238243f6f8fd6c22e0df78fa07450283322c476dc4af2e2a744c6d3",
                "token": {
                  "address": "0x4c23d718416164b2f52f88dde4cf0b1172b741b6",
                  "symbol": "swap-rewards.xyz",
                  "name": "swap-rewards.xyz"
                }
              }
            ]
          }
        },
        {
          "token": {
            "tokenBalances": [] // Owned by betashop.eth, but not owned by sarvesh
          }
        }
      ]
    }
  }
}

POAPs In Common Owned By Farcaster User(s)

You can fetch common POAPs of multiple Farcaster user(s):

Try Demo

https://app.airstack.xyz/DTyOZg/7RtCNBtLUA

Show common POAPs of two Farcaster users

Code

Query

query MyQuery {
  Poaps(
    input: {filter: {owner: {_eq: "fc_fname:betashop.eth"}}, blockchain: ALL, order: {createdAtBlockNumber: DESC}}
  ) {
    Poap {
      poapEvent {
        poaps(input: {filter: {owner: {_eq: "fc_fname:ipeciura"}}}) {
          poapEvent {
            eventName
            eventId
            endDate
            country
            city
          }
        }
      }
    }
  }
}

Response

{
  "data": {
    "Poaps": {
      "Poap": [
        {
          "poapEvent": {
            "poaps": [
              {
                "poapEvent": {
                  "eventName": "Airstack Amazing Race Dubai",
                  "eventId": "145995",
                  "endDate": "2023-07-30T00:00:00Z",
                  "country": "UAE",
                  "city": "Dubai"
                }
              }
            ]
          }
        },
        {
          "poapEvent": {
            "poaps": [] // owned by betsahop.eth, but not ipeciura
          }
        }
      ]
    }
  }
}

Developer Support

If you have any questions or need help regarding fetching common ERC20 tokens, NFTs, or POAPs of multiple Farcaster users, please join our Airstack's Telegram group.

More Resources

• Tokens In Common Guides

• Nested Queries

• POAPs API Reference

• TokenBalances API Reference