Querying Blockchain Data from Polymarket with Subgraphs on The Graph

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Query Polymarket’s onchain data using GraphQL via subgraphs on The Graph Network. Subgraphs are decentralized APIs powered by The Graph, a protocol for indexing & querying data from blockchains.

You can see an interactive query playground on the Polymarket subgraph’s page on The Graph Explorer, where you can test any query.

The visual query editor helps you test sample queries from your subgraph.

You can use the GraphiQL Explorer to compose your GraphQL queries by clicking on the fields you want.

{
  redemptions(orderBy: payout, orderDirection: desc, first: 5) {
    payout
    redeemer
    id
    timestamp
  }
}

{
  "data": {
    "redemptions": [
      {
        "id": "0x8fbb68b7c0cbe9aca6024d063a843a23d046b5522270fd25c6a81c511cf517d1_0x3b",
        "payout": "6274509531681",
        "redeemer": "0xfffe4013adfe325c6e02d36dc66e091f5476f52c",
        "timestamp": "1722929672"
      },
      {
        "id": "0x2b2826448fcacde7931828cfcd3cc4aaeac8080fdff1e91363f0589c9b503eca_0x7",
        "payout": "2246253575996",
        "redeemer": "0xfffe4013adfe325c6e02d36dc66e091f5476f52c",
        "timestamp": "1726701528"
      },
      {
        "id": "0x983b71c64b5075fc1179f4e03849af9c727be60de71c9e86e37ad0b3e43f9db9_0x26",
        "payout": "2135448291991",
        "redeemer": "0x5a181dcf3eb53a09fb32b20a5a9312fb8d26f689",
        "timestamp": "1704932625"
      },
      {
        "id": "0x2b2826448fcacde7931828cfcd3cc4aaeac8080fdff1e91363f0589c9b503eca_0xa",
        "payout": "1917395333835",
        "redeemer": "0xfffe4013adfe325c6e02d36dc66e091f5476f52c",
        "timestamp": "1726701528"
      },
      {
        "id": "0xfe82e117201f5169abc822281ccf0469e6b3740fcb4e799d1b599f83b8f11656_0x30",
        "payout": "1862505580000",
        "redeemer": "0xfffe4013adfe325c6e02d36dc66e091f5476f52c",
        "timestamp": "1722929866"
      }
    ]
  }
}

The schema for this subgraph is defined here in Polymarket’s GitHub.

https://gateway.thegraph.com/api/{api-key}/subgraphs/id/Bx1W4S7kDVxs9gC3s2G6DS8kdNBJNVhMviCtin2DiBp

The Polymarket Subgraph endpoint is available on Graph Explorer.

1. Go to https://thegraph.com/studio and connect your wallet
2. Go to https://thegraph.com/studio/apikeys/ to create an API key

You can use this API key on any subgraph in Graph Explorer, and it’s not limited to just Polymarket.

100k queries per month are free which is perfect for your side project!

• Polymarket
• Polymarket Activity Polygon
• Polymarket Profit & Loss
• Polymarket Open Interest

You can pass any GraphQL query to the Polymarket endpoint and receive data in json format.

This following code example will return the exact same output as above.

const axios = require('axios');

const graphqlQuery = `{
  positions(first: 5) {
    condition
    outcomeIndex
  }
};

const queryUrl = 'https://gateway.thegraph.com/api/{api-key}/subgraphs/id/Bx1W4S7kDVxs9gC3s2G6DS8kdNBJNVhMviCtin2DiBp'

const graphQLRequest = {
  method: 'post',
  url: queryUrl,
  data: {
    query: graphqlQuery,
  },
};

// Send the GraphQL query
axios(graphQLRequest)
  .then((response) => {
    // Handle the response here
    const data = response.data.data
    console.log(data)

  })
  .catch((error) => {
    // Handle any errors
    console.error(error);
  });

For more information about querying data from your subgraph, read more here.

To explore all the ways you can optimize & customize your subgraph for a better performance, read more about creating a subgraph here.