Our Lite plan does not include HTTP API calls.
Our Professional plan has a daily limit of 1000 API calls per user. If you need more than 1000 API calls per day, you can simply purchase more users. For example if you need 3000 API calls per day, you can just purchase 3 users. You don't actually need to have 3 users, you just need to purchase a 3 users license to ensure you have enough API call quota.
Most of our limits are "soft limits", meaning that your application will not stop functioning when the limit is reached. We will simply notify you that you must upgrade your account to accommodate your current usage.
View more information about Ragic Plans here