To authenticate your details to use the NFT expansion APIs, you need a Web3 API key and secret. If you don't already have a Web3 API, then:
- Go to your Infura dashboard and create a new key.
- Select Web3 API for the network and enter a name for the project.
- Take note of the API key on the Endpoints tab and API key secret on the Security tab.
You will also require an IPFS project if you intend to use the SDKs IPFS methods.