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Creating an API Key
The name is something that is only visible to you. It is intended to help you distinguish between different API keys. To avoid confusion, it is highly recommended that you use a suggestive name.
Through this parameter, you can control how many credits an API key is allowed to use each billing cycle (month). API keys whose usage reached this limit will be considered invalid until the next week. Default is 0, which means that the key has no credit limit.