Freepik API uses API keys to authenticate requests. You need to include your API key in the header of every API request to access the Freepik resources.Currently, private API keys are the only way to authenticate with the Freepik API. This means that only server-to-server calls can be made to the APIAll API endpoints are authenticated using API keys and picked up from the specification file.
Be aware that API requests are subject to rate limiting. The specific limits may vary based on your account type and agreement with Freepik. Always check the API response headers for rate limit information.