UPDATE: The government generously increased the API request limit to 1,000 per IP per hour. This question is now obsolete.
api.data.gov allows for up to 1,000 API requests per user per hour, which is plenty. However, each user requires their own API Key. How can I request a key for them without asking a user to register with api.data.gov?
The API I am using says:
"If you engineer your app to request a key for each user during your registration process – all they need is the users’ email, the app then acquires a key and stores it for use by the app. This then gives each instance of the app a rate limit of 1000/hr."
But they do not say how to create a key for those users.
The underlying technology is API Umbrella, but their documentation is not clear to me in programatically generating a key for users either.
How can I create a new key for each of my users, which could number in the thousands?