Uptime Robot provided 2 api-key types: a master api_key and monitor-specific api_key.
The master api_key can be used to perform almost every action exists in the dashboard and it must not be revealed for the security of the accounts.
Yet, there are cases where the api_key may needed to be revealed like using it in client-side code or sharing with customers. For this reason, monitor-specific api_keys (which can only use the
getMonitors method for the given monitor) were introduced and they help a lot.
A new api_key type is added today to simplify the use further: Read-Only Api-Key.
Similar to monitor-specific api_keys, it can again only use the
getMonitors method. Yet, it supports fetching data for all the monitors which is ideal for sharing it with teammates or using in client-side code which needs to deal with the data of multiple monitors.
Hope it helps :).