OACP Apps

Every app below supports OACP. Install it alongside Hark, and you can control it by voice. Each demonstrates a different OACP pattern -- from simple foreground launches to background queries with async results and parameter extraction.

App

What it does

Capabilities

Source

OACP Test App

Counter and battery demo

Increment, decrement, set, reset counter; get battery, get counter

GitHub

Breezy Weather

Weather forecasts

Weather queries

GitHub

Binary Eye

QR/barcode scanner

Scan, create barcodes

GitHub

Voice Recorder

Audio recording

Start/stop recording

GitHub

Libre Camera

Camera app

Take photos

GitHub

Wikipedia

Encyclopedia

Search articles, open pages

GitHub

ArchiveTune

Internet Archive music

Play music, search

GitHub

Live Darbar

Sikh devotional streaming

Play live stream

GitHub

What each app demonstrates

App

OACP pattern

OACP Test App

Foreground + background actions, integer parameters, async results. The full kitchen sink.

Breezy Weather

Async background query. The app never opens -- it broadcasts the forecast back to Hark.

Binary Eye

Foreground camera launch for scanning, plus parameter-driven barcode creation.

Voice Recorder

Simple foreground action. One command starts recording.

Wikipedia

Entity providers (language selection) and foreground navigation to articles.

ArchiveTune

Parameter extraction. Hark pulls song name and artist from a single utterance.

Libre Camera

Simple foreground action. Opens the camera to take a photo.

Live Darbar

Simple foreground action. Starts a live devotional stream.

Add your app

Got an app with OACP support? We want to list it here.

Check out the Contributing guide for how to add OACP to an open-source app and get it listed. You can also use the AI Prompts page to get help writing your oacp.json and receiver.

Last Edited: April 11, 2026