I was looking for this too and, after some digging, ended up writing the following in Javascript for Automation (JXA). It works with the JXA action in Shortcuts and should work in Keyboard Maestro, Alfred, Script Editor, Automator, osascript etc. The output is the name of the current focus mode, if any.
const app = Application.currentApplication()
app.includeStandardAdditions = true
function getJSON(path) {
const fullPath = path.replace(/^~/, app.pathTo('home folder'))
const contents = app.read(fullPath)
return JSON.parse(contents)
}
function run() {
let focus = "No focus" // default
const assert = getJSON("~/Library/DoNotDisturb/DB/Assertions.json").data[0].storeAssertionRecords
const config = getJSON("~/Library/DoNotDisturb/DB/ModeConfigurations.json").data[0].modeConfigurations
if (assert) { // focus set manually
const modeid = assert[0].assertionDetails.assertionDetailsModeIdentifier
focus = config[modeid].mode.name
} else { // focus set by trigger
const date = new Date
const now = date.getHours() * 60 + date.getMinutes()
for (const modeid in config) {
const triggers = config[modeid].triggers.triggers[0]
if (triggers && triggers.enabledSetting == 2) {
const start = triggers.timePeriodStartTimeHour * 60 + triggers.timePeriodStartTimeMinute
const end = triggers.timePeriodEndTimeHour * 60 + triggers.timePeriodEndTimeMinute
if (start < end) {
if (now >= start && now < end) {
focus = config[modeid].mode.name
}
} else if (start > end) { // includes midnight
if (now >= start || now < end) {
focus = config[modeid].mode.name
}
}
}
}
}
return focus
}