Getting API data on a map

[JasonCyphers]

I have no experience with API.  How can I get this API data onto an AGOL map?

[mikaël]

I'm not sure that you can as is.

To add data to a map, you first have to add it as a layer in your AGOL content. See here for accepted types (the most common one for an API would be GeoJSON).

You would need some sort of service/server to get the information from the API and transform it to the GeoJSON format before sending it to AGOL.

[MiguelParedes]

Greetings @JasonCyphers 

Following the advice from @mikaël, you would need valid GeoJSON, which the link provided does not given that it is missing "type" a required member:

Are you able to request that the data be provided in GeoJSON?