Why API Keys?

Well this is a good question. Since we already have project-id to ensure the usage of any particular user according to their usage, the use of an API-KEY inherently seems pretty "Non Sensical". So, why did we still decide to go with it.

See, we need to ensure that the person who sends data of a website is YOU. No one with your projectID should be able to tamper with your data. API_KEY is a SHA-256 encrypted string that helps us ensure that you are the person who actually made this website. No fake user with your project-id is tampering with your data.