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Orca Emulator

Free

Control iOS emulator streams seamlessly within Orca.

by stablyai41.8k stars on stablyai/orca
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Updated Aug 10, 2026
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Free · Opens the source repo

What Orca Emulator does

The Orca Emulator skill allows developers to control mobile (iOS) emulator or simulator streams directly from within the Orca environment using the orca CLI. This integration facilitates a range of interactions including taps, gestures, typing, hardware button controls, camera injection, and managing runtime permissions, all while providing a live view of the emulator in Orca's interface. This skill is particularly useful for developers who need to automate and streamline their mobile app testing workflows without needing to switch between different command-line tools or environments.

By using Orca's built-in capabilities, users can avoid the complexities associated with raw npx serve-sim or direct simctl commands. The Orca Emulator skill manages device scoping, helper lifecycle, and worktree context automatically, allowing developers to focus on their application logic instead of the underlying infrastructure. This skill is designed to work in tandem with the orca-cli skill, enhancing the overall development experience by providing a cohesive environment for terminal commands, worktree management, and web browsing.

To get started, users need to resolve the CLI for their session, ensuring that they are using the correct executable for their environment. The skill emphasizes the importance of loading the full guide before executing commands to ensure compatibility and correctness, as commands and flags may change with different versions of Orca. This approach minimizes errors and maximizes efficiency when working with mobile emulators in a development setting.

When to use it

Use this skill when you need to automate interactions with an iOS emulator while working in the Orca environment.

When not to use it

This skill is not suitable for users who require a standalone emulator experience outside of Orca or those who prefer raw command-line interactions without the Orca interface.

What you can build with it

Automating Mobile Testing

Use the Orca Emulator skill to automate interactions with iOS emulators, streamlining your mobile app testing process.

Seamless Development Workflow

Integrate the Orca Emulator skill into your development workflow to manage emulator commands without switching tools.

Real-Time Emulator Control

Control iOS emulators in real-time while seeing live updates in the Orca interface, enhancing your testing efficiency.

How to install Orca Emulator

View source

1. Install with the skills CLI

npx skills add stablyai/orca/orca-emulator --agent claude-code

2. Or install it manually

Download the skill folder and drop it into ~/.claude/skills/ for all projects, or .claude/skills/ to scope it to one repo. Restart Claude Code so it picks up the new skill.

Anthropic's agentic coding CLI, and the reference implementation of Agent Skills. Drop a skill folder into ~/.claude/skills and Claude Code loads it automatically whenever a task matches the skill's description. Claude Code docs

Inside SKILL.md

Written by stablyai

Orca Emulator

This file is a discovery stub, not the usage guide. The full, version-matched Orca emulator reference is served by the orca binary itself — kept out of this file on purpose so it can never drift from the binary that will actually run your commands.

Engage Orca whenever you drive a mobile (iOS) emulator / simulator stream from inside the Orca app: taps, gestures, typing, hardware buttons, camera injection, runtime permissions, the accessibility tree, and more — all while the live view stays in Orca's emulator pane. Prefer this over raw serve-sim or direct simctl when running agents inside Orca, which handles device scoping, helper lifecycle, and worktree context for you. It complements the orca-cli skill for terminals, worktrees, and the built-in browser.

Resolve the CLI for this session

Choose the executable once and reuse it for every later command:

  • If the ORCA_CLI_COMMAND environment variable is set, use its value. Orca exports this for managed WSL sessions.
  • Otherwise, in a dev checkout whose session exposes ORCA_DEV_REPO_ROOT, use orca-dev.
  • Otherwise, on Linux outside an Orca-managed terminal, use orca-ide. Never run bare orca there — outside Orca's terminals it normally resolves to the GNOME Orca screen reader (/usr/bin/orca) and starts speech on the user's machine.
  • Otherwise, use orca.

Below, ORCA is a placeholder for the executable you resolved. Substitute it before running anything; do not create a shell variable or run ORCA literally. This works the same way in POSIX shells, PowerShell, and cmd.exe.

If the selected executable cannot run, report its exact error and stop. Do not fall through to another executable, which could silently target a different Orca build.

Load the full guide before running Orca commands

ORCA skills get orca-emulator

That prints the complete, version-matched guide for the exact binary that will handle your next commands — booting devices, taps and gestures, typing, hardware buttons, camera injection, permissions, and the accessibility tree. Read it first, then run the specific command you need.

Don't guess subcommands or flags from memory or from a cached copy of this stub. They change between Orca releases, and this file deliberately no longer lists them. Confirm the app is up with ORCA status --json (start it with ORCA open --json if needed), and prefer --json for agent-driven calls.

If an older Orca does not recognize skills get

Use this fallback only when the selected binary explicitly reports that skills get is an unknown command. Another failure is not proof of an older binary; report it rather than guessing or changing executables. For a confirmed pre-guide binary, use only this bounded, read-only bootstrap to orient. Do not dead-end and do not invent commands:

ORCA status --json
ORCA emulator list --json

Then tell the user that updating Orca restores the full, version-matched guide via ORCA skills get orca-emulator. Beyond these commands, ask the user rather than guessing a command surface this older binary may not support.

Frequently asked questions about Orca Emulator

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