Our NFT API gives you direct access to NFT metadata, exchange data, transaction activity, historical pricing, scam/spam scores, rarity, and ownership information in real time. The API also returns CDN cache urls for all NFT assets with multiple web-optimized sizes perfectly suited for developing wallet, portfolio, exchange and other applications.
Retrieving NFT data from transaction logs, IPFS, etc is costly and involves significant development time and maintenance. We aggregate NFT information across Ethereum, Polygon, Arbitrum, Optimism and BSC, saving you the time and effort of your own indexing so you can focus on your core business.
Our APIs include collection data (rarity, traits, owners, exchange data), NFT tokens (cached and resized images, video thumbnails, ownership history, detailed pricing analytics), exchange data by marketplace, ownership by wallet across chains, transactions, scam/spam scores, and much more.
Getting Started
Our documentation for every API endpoint is available at https://docs.blockspan.com.
Per QuickNode guidelines, your API key and the chain from which you are requesting data is included in your url and does not need to be passed as a separate header or parameter. Your API url is in format “https://api.blockspan.com/{Your API KEY}/v1/.” For example, to use our collections API as defined in the documentation, you would send requests to the url “https://api.blockspan.com/{Your API KEY}/v1/collections/”
Don’t hesitate to contact us or join our discord if you have any questions.
