Swift, Kotlin and React Native
One call that wraps the HTTP API's bearer door, with nothing else in the dependency tree. A token that ships inside an app is public: an app sends through its own server, or through a source whose Reach you are happy to let strangers reach.
Swift
iOS 15, macOS 12, watchOS 8 and tvOS 15 and up. URLSession, async.
In Xcode: File, Add Package Dependencies, paste the URL. The answer is a YouLMK.Result with id, receipt, grouped and held; an error is a YouLMK.Error with status, code, field and retryAfter.
Kotlin and Java
Android 8 and up, and any JVM. HttpURLConnection, blocking: on Android call it off the main thread.
The answer is a YouLMK.Result; an error is a YouLMK.Error, an IOException with status, code, field and retryAfter. From Java, new YouLMK(token).notify(title) and the overloads.
React Native and Expo
The Node package, as it is: it uses the platform's fetch and nothing from Node.