The Rinkeby API is used for browsing non-fungible assets on the Ethereum Rinkeby test network. Creating and purchasing assets on this network requires Rinkeby ether, which is free. To acquire some, visit https://faucet.rinkeby.io/ and authenticate using your Twitter account.

The API is identical to the OpenSea mainnet API, except the base URL is https://testnets-api.opensea.io/api/v1. For mainnet an API key is needed, but for testnets you do not need an API key.


API FAQs

What is the default rate limit?
GET requests are limited to 4/sec. POST requests are limited to 2/sec.

Do I need a Testnets API Key?
No, you no longer need an API key to make requests to our Testnets API endpoints.

What can I build using Testnets?
You can do many things on Testnets! We recommend you start off with the Creating your first NFT smart contract tutorial.

Can I contact OpenSea about the API?
Yes. You can reach out to our developers channel on Discord or email us at [email protected]