On Oct 28, the day of Android Dev Summit, Google shipped Android Studio Rabbit 2 (2026.2.2) to the stable channel. The headline change is that Bring Your Own Agent (BYOA) moves from its September Canary preview to a stable feature: developers can plug any Agent Client Protocol (ACP) compatible coding agent into the IDE agent window. Google says more than 40 are available, including Anthropic Claude Agent, OpenAI Codex, JetBrains Junie and Google Antigravity, and users can sign in with personal or enterprise plans. The release also adds an agent skills manager, AI Change Review and agent-assisted LeakCanary fixes.
Key Takeaways
- ✓Version 2026.2.2 reached the Stable channel on Oct 28; BYOA first appeared in preview with the Rabbit 2 Canary in September
- ✓Google says 40+ ACP-compatible agents are available; Claude Agent, Codex and Antigravity are the defaults, and others install from the registry under Settings > Tools > AI > Agents
- ✓Agents get IDE tools: the project graph and build diagnostics, Android SDK tools, terminal execution, emulator control, Logcat and Compose Preview
- ✓Sign in with personal API keys or consumer and enterprise subscriptions; the built-in Android Studio agent stays free
- ✓Also new: a skills manager preloaded with Android and Firebase skills, AI Change Review from three entry points, and agent-assisted LeakCanary fixes; Google's Mishaal Rahman said Android CLI users grew 10x
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Background and the problem
Many developers now use several coding agents, but IDEs tend to bind you to their own model or agent, so switching tools means switching editors and losing the IDE's build and debugging context. Android Studio already allowed custom models; this release opens the agent layer too. Google's blog says developers want to pick an agent by cost, enterprise agreement or personal preference.
Architecture and mechanism
BYOA is built on the open Agent Client Protocol (ACP). The IDE acts as the ACP client and passes the full project graph, build setup and platform details to the external agent, which then filters to the relevant files; Google says this cuts token use and latency. Android Studio also injects build diagnostics, Compose Previews, Android SDK tools, emulator control and Logcat as tools, and agents can load Android skills and the Android Knowledge Base. Permissions are granular, so routine work runs on its own and riskier actions pause for approval.
Benchmarks and comparisons
Google has not published benchmarks or efficiency numbers for BYOA, nor any comparison between agents inside Android Studio. The confirmed figures are 40+ available agents and version 2026.2.2. Google's Mishaal Rahman posted on X that Android CLI users grew 10x; that is a personal post, not an official metric.
What developers can do now
Update to Rabbit 2 stable, open the agent window, pick Claude Agent, Codex or Antigravity, and sign in or add an API key; more agents are in the registry under Settings > Tools > AI > Agents. Invoke skills with @ in chat or manage them in the Skills Manager. After changes, run Change Review for recommended fixes, then create a walkthrough that groups diffs by theme. Billing and data handling for external agents depend on each provider.
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