Axe

AXe - iOS Simulator Automation

Automate iOS Simulator interactions using the AXe command-line tool, which leverages Apple's Accessibility APIs for UI testing, automation, and verification.

Quick Start

All AXe commands require the simulator UDID. Get it first:

# List available simulators
axe list-simulators

# Store UDID in variable for convenience
UDID=$(axe list-simulators | grep "iPhone 15 Pro" | awk '{print $NF}')

Core Operations

Touch & Gesture Automation

Tap at coordinates:

axe tap -x 100 -y 200 --udid $UDID

Swipe between points:

axe swipe --start-x 300 --start-y 200 --end-x 100 --end-y 200 --udid $UDID

Use gesture presets:

# Common gestures
axe gesture scroll-down --udid $UDID
axe gesture swipe-from-left-edge --udid $UDID

# Available: scroll-up, scroll-down, scroll-left, scroll-right,
#            swipe-from-left-edge, swipe-from-right-edge,
#            swipe-from-top-edge, swipe-from-bottom-edge

Text Input

# Direct text
axe type 'Hello World!' --udid $UDID

# From stdin
echo "Test message" | axe type --stdin --udid $UDID

# From file
axe type --file message.txt --udid $UDID

Hardware Buttons

axe button home --udid $UDID
axe button lock --udid $UDID
axe button siri --udid $UDID

# Long press
axe button lock --duration 2.0 --udid $UDID

Video Recording & Streaming

Direct recording:

# Press Ctrl+C to stop and finalize the MP4
axe record-video --udid $UDID --fps 30 --output recording.mp4

Streaming:

# Pipe to ffmpeg
axe stream-video --udid $UDID --fps 30 --format ffmpeg | \
  ffmpeg -f image2pipe -framerate 30 -i - output.mp4

UI Accessibility Information

# Entire UI tree
axe describe-ui --udid $UDID

# Element at specific point
axe describe-ui --point 150,300 --udid $UDID

Automation Workflow Patterns

Sequential Actions with Timing

Use --pre-delay and --post-delay for reliable automation:

# Wait for animation before tap
axe tap -x 150 -y 300 --pre-delay 0.5 --udid $UDID

# Allow UI to respond after tap
axe tap -x 150 -y 300 --post-delay 1.0 --udid $UDID

# Chain actions with timing
axe tap -x 100 -y 200 --post-delay 0.5 --udid $UDID
axe type 'username' --post-delay 0.3 --udid $UDID
axe tap -x 100 -y 300 --post-delay 0.5 --udid $UDID
axe type 'password' --post-delay 0.3 --udid $UDID
axe button home --udid $UDID

Multi-Step Test Scenarios

# Example: Login flow automation
UDID=$(axe list-simulators | grep "iPhone 15" | head -1 | awk '{print $NF}')

# Tap username field
axe tap -x 187 -y 300 --post-delay 0.5 --udid $UDID

# Enter username
axe type 'testuser@example.com' --post-delay 0.5 --udid $UDID

# Tap password field
axe tap -x 187 -y 400 --post-delay 0.5 --udid $UDID

# Enter password
axe type 'password123' --post-delay 0.5 --udid $UDID

# Tap login button
axe tap -x 187 -y 500 --post-delay 2.0 --udid $UDID

Command Reference

For complete command documentation including all options and parameters, see commands.md.

Quick reference of available commands:

• tap, swipe, touch - Touch and gesture simulation
• gesture - Pre-configured gesture presets
• type - Text input with automatic shift handling
• button - Hardware button simulation (home, lock, siri, apple-pay)
• key, key-sequence - Low-level keyboard control with HID keycodes
• stream-video, record-video - Video capture and streaming
• describe-ui - Extract accessibility information
• list-simulators - List available simulators

Tips

Get UI coordinates: Use describe-ui to find element positions before automating taps.

Simulator state: Ensure the target simulator is booted before running commands.

Timing strategy: Start with longer delays (0.5-1.0s) and reduce as needed for reliable automation.

Video recording: Always press Ctrl+C to properly finalize MP4 files. The output path is printed to stdout.

UDID management: Store UDID in a variable for cleaner scripts and reusability.