The API Key associated with your plan for authenticating your requests.
import Microlink from '@microlink/react' export default () => <Microlink url='https://microlink.io' apiKey='MyApiKey' />
When you do not attach an API Key, you are going to use the free quota until you reach the daily rate limit.
To get a better daily quota, you'll need to have a plan. See pricing to know the plans.
After payment, you'll recieve the API key (via email) that you need to attach to authenticate requests.