Now available: Floor price, volume and market cap

You can now use Center's API to access floor price, volume and market cap data for NFT collections on Ethereum and Polygon.

We are excited to share that our users can now use Center's API to retrieve market data:

Floor price: Minimum trade price over the last 5 days on select exchanges (vary by chain)
Collection volume: 24 hour trading volume for collection
Market cap: Sum of max(floor price, last traded price) for all assets in collection

For maximum accuracy, we've taken care to remove the impact of obvious wash trading (e.g., trades back and forth between the same two addresses). All data points are provided in WETH, using exchange rates at the time of the trade if necessary.

We have rolled out support for market data on both ethereum-mainnet and polygon so far, but will be adding support for other chains soon.

Check out a few examples:

Retrieve the floor price for Bored Ape Yacht Club:

curl --request GET \
     --url https://api.center.dev/v1/ethereum-mainnet/0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D/market-data/floor-price \
     --header 'X-API-Key: test' \
     --header 'accept: application/json'

Response:

{
  "currencyInfo": {
    "symbol": "WETH",
    "decimals": 18,
    "address": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
    "isNative": false
  },
  "amount": {
    "atomicAmount": "58403982000000000000",
    "wholeAmount": 58.403982
  }
}

Retrieve the market cap of Bored Ape Yacht Club:

curl --request GET \
     --url https://api.center.dev/v1/ethereum-mainnet/0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D/market-data/market-cap \
     --header 'X-API-Key: test' \
     --header 'accept: application/json'

Response:

{
  "currencyInfo": {
    "symbol": "WETH",
    "decimals": 18,
    "address": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
    "isNative": false
  },
  "amount": {
    "atomicAmount": "723280379763504000000000",
    "wholeAmount": 723280.379763504
  }
}

Retrieve the volume of Bored Ape Yacht Club:

curl --request GET \
     --url https://api.center.dev/v1/ethereum-mainnet/0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D/market-data/volume \
     --header 'X-API-Key: test' \
     --header 'accept: application/json'

Response:

{
  "currencyInfo": {
    "symbol": "WETH",
    "decimals": 18,
    "address": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
    "isNative": false
  },
  "amount": {
    "atomicAmount": "332854485000000000000",
    "wholeAmount": 332.854485
  }
}

Other requests or ideas? Please submit a feature request or reach out to our support team.