Buddy: an open source app that lets AI agents (Claude Code, Codex, OpenCode) use your Android phone

I've been building Buddy, a free, open source (Apache 2.0) Android app. You type or say what you want in a floating bubble, and an AI agent reads the screen, taps and types through your apps to do it.

• Your choice of agent: Claude Code, Codex, OpenCode, Antigravity or Grok, running inside the app (Alpine Linux via proot) on your own plan. OpenCode's free models need no account.
• No root, adb or PC: it reads the screen and taps through the accessibility service.
• Asks first: before anything is sent, posted, bought or deleted. It pauses when you touch the screen and never types passwords or payment details.
• Builds apps: with Linux tools on, it builds real APKs on the phone. This week I drew a maze on a paper towel, took a photo, and it made it a tilt game. The first build crashed on launch; it found the bug and fixed it.

To be upfront:

• What the agent reads on your screen goes to the AI service you pick.
• It's early (2.2), tested most on a OnePlus 12 with Android 16.
• It's not on Play (Google rejected the accessibility use), so it's an APK from GitHub releases, built by GitHub Actions from the source.

Source and releases: github.com/ghorbelhamdi/buddy-android

Happy to answer questions here.