[android] How do I download the Android SDK without downloading Android Studio?

Command line only without sdkmanager (for advanced users / CI):

You can find the download links for all individual packages, including various revisions, in the repository XML file: https://dl.google.com/android/repository/repository-12.xml

(where 12 is the version of the repository index and will increase in the future).

All <sdk:url> values are relative to https://dl.google.com/android/repository, so

<sdk:url>platform-27_r03.zip</sdk:url>

can be downloaded at https://dl.google.com/android/repository/platform-27_r03.zip

Similar summary XML files exist for system images as well: