See ImranR98/Obtainium#1214 for details.

To test locally: python -m http.server 8080

To redirect to Obtainium links, go to http://apps.obtainium.imranr.dev/redirect.html?r=REDIRECT_LINK

obtainium://add: http://apps.obtainium.imranr.dev/redirect.html?r=obtainium://add/https://github.com/florisboard/florisboard

obtainium://app: http://apps.obtainium.imranr.dev/redirect.html?r=obtainium://app/%7B%22id%22%3A%22dev.patrickgold.florisboard.beta%22%2C%22url%22%3A%22https%3A%2F%2Fgithub.com%2Fflorisboard%2Fflorisboard%22%2C%22author%22%3A%22florisboard%22%2C%22name%22%3A%22FlorisBoard%20Beta%22%2C%22preferredApkIndex%22%3A0%2C%22additionalSettings%22%3A%22%7B%5C%22includePrereleases%5C%22%3Atrue%2C%5C%22fallbackToOlderReleases%5C%22%3Atrue%2C%5C%22filterReleaseTitlesByRegEx%5C%22%3A%5C%22%5C%22%2C%5C%22filterReleaseNotesByRegEx%5C%22%3A%5C%22%5C%22%2C%5C%22verifyLatestTag%5C%22%3Afalse%2C%5C%22dontSortReleasesList%5C%22%3Afalse%2C%5C%22trackOnly%5C%22%3Afalse%2C%5C%22versionDetection%5C%22%3A%5C%22standardVersionDetection%5C%22%2C%5C%22apkFilterRegEx%5C%22%3A%5C%22%5C%22%2C%5C%22autoApkFilterByArch%5C%22%3Atrue%2C%5C%22appName%5C%22%3A%5C%22%5C%22%2C%5C%22exemptFromBackgroundUpdates%5C%22%3Afalse%2C%5C%22skipUpdateNotifications%5C%22%3Afalse%2C%5C%22about%5C%22%3A%5C%22%5C%22%7D%22%7D

Necessary json strings:

{"id":"dev.patrickgold.florisboard","url":"https://github.com/florisboard/florisboard","author":"florisboard","name":"FlorisBoard"}

Example with added only additionalSettings and includePrereleases: http://apps.obtainium.imranr.dev/redirect.html?r=obtainium://app/%7B%22id%22%3A%22dev.patrickgold.florisboard.beta%22%2C%22url%22%3A%22https%3A%2F%2Fgithub.com%2Fflorisboard%2Fflorisboard%22%2C%22author%22%3A%22florisboard%22%2C%22name%22%3A%22FlorisBoard%20Beta%22%2C%22additionalSettings%22%3A%22%7B%5C%22includePrereleases%5C%22%3Atrue%7D%22%7D