This a document containing the usage of all the APIs I offer, for free. Always.

I will never store identifiable data, such as IP addresses, user-agent strings, etc.

The structure is as follows:

• first heading level denotes the category.
• the next heading level is the name of the API (optional, e.g. IP doesn’t need this)
• the next is the HTTP method used can be multiple per API.
• the next level is metadata about the API.

All error responses contain a reason header and a useful body. See the first example of the lookup API.