When connecting an exchange to Cornix each distinct API Key used will be counted as '1' Primary API Slot.
You can create more than 1 exchange account using 1 API Key by selecting more than 1 account type (e.g. Spot, Futures, etc.) when connecting your exchange.
Each Cornix subscription plan has a different number (quota) of Primary API Slots. You can see the details and the https://cornix.io/#pricing.
Note:
If you've reached the limit of the number of Primary API Slots, the price for any additional slot purchased on top of your plan's quota, is 200$ per year.
This can be purchased by contacting out support team at any time.