Read the current Focus mode on macOS Monterey (12.0+) using JavaScript for Automation (JXA)

get-focus-mode.js

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
}

ive been using jq with this bash script:

#!/bin/bash
# Get current macOS Focus mode from Do Not Disturb database

jq -s -r '
  # 1) Grab the latest-mode ID (or null if none)
  (.[0].data[0].storeAssertionRecords? // []
    | max_by(.assertionStartDateTimestamp)?
    | .assertionDetails.assertionDetailsModeIdentifier
  ) as $activeID

  # 2) If we got an ID, look it up; otherwise print "Free"
  | if $activeID then
      (.[1].data[0].modeConfigurations? // [])[]
      | select(.mode.modeIdentifier == $activeID)
      | .mode.name
    else
      "Free"
    end
' \
  ~/Library/DoNotDisturb/DB/Assertions.json \
  ~/Library/DoNotDisturb/DB/ModeConfigurations.json

(also needs full disk access, im using sequioa and it does show up in the full disk access gui)