Is there a rate limit on Zerion API?

Yes, different subscription plans have different rate limits. The free tier has a rate limit of 10 requests per second and 2,000 requests per day.

Is the Zerion API free?

Zerion API has a generous free tier, which should be enough to test endpoints and even build an MVP. For production scale, you can choose between several subscription plans.

Can I monetize my product/service built on top of Zerion API?

Yes, Zerion API is intended to be used in a wide range of commercial products. For more details, please check the API licensing agreement.

Do you have some examples of products built on Zerion API?

Yes, many leading companies use Zerion API in their products: Uniswap, Kraken, Infinex, and many more. You read more about different products built with Zerion API on the landing page and in the Zerion blog.

What chains does Zerion API support? Can you add a specific chain?

Zerion API supports all major EVM networks and Solana. Check the current list of supported chains. If you represent a chain and would like to see in Zerion API, please send an email to api@zerion.io

How to query wallet data on testnets?

With Zerion API, you can query testnet data the same as any mainnet. You can check which testnets are supported in the supported chains list.

Does Zerion API include NFTs?

Yes, Zerion API includes NFTs coverage for Ethereum and many EVM networks. Check the supported chains list to see where NFTs are supported.

Does Zerion API include DeFi positions?

Yes, Zerion API can fetch DeFi protocol positions on many EVM networks. To get only protocol position, use the positions endpoint with the ‘only_complex’ filter on. Check the supported chains list to see where NFTs are supported.

How does Zerion handle errors?

If there is a problem with a request, Zerion API returns responses that contain a short error title and a longer description of the error.

What are webhooks, and how to configure them?

Zerion API’s webhooks let you create subscriptions to transactions. One of the use cases is to create alerts or notifications when new transactions happen. Read this blog post to learn more about how to create transaction notifications.

What are fungible IDs?

Fungible IDs are Zerion API’s internal IDs for fungible tokens, such as ERC-20. This ID links different implementations of the same asset on several chains. To find the ID, you can query the fungibles endpoint by an asset’s address.

What are chain IDs?

Chain ID is Zerion API’s internal ID for blockchain networks. This ID is used to map relationships across different endpoints. You can get all chain IDs by querying the chains endpoint.