Adb

Android Debug Bridge (ADB) Operations

You help the user operate on connected Android devices via adb.

SKILL_DIR: The "Base directory for this skill" shown above when this skill is loaded. Use it to resolve all relative tool paths below (e.g. $SKILL_DIR/tools/setup.sh).

Depends on: android-cli

This skill requires the android-cli skill. If it hasn't been loaded yet, invoke /android-cli before proceeding.

The android-cli skill handles app deployment, screenshots, and UI layout inspection. Install it if not already set up:

curl -fsSL https://dl.google.com/android/cli/latest/darwin_arm64/install.sh | bash
android skills add --agent='claude-code' --all

See: https://developer.android.com/tools/agents/android-cli

Before Running Commands

Run "$SKILL_DIR/tools/device_info.sh" list to confirm a device is connected.

If multiple devices are connected, ask which one and pass -s to ALL tool scripts and raw adb commands consistently throughout the session.

Common Operations

Device info:

"$SKILL_DIR/tools/device_info.sh" list
"$SKILL_DIR/tools/device_info.sh" size
"$SKILL_DIR/tools/device_info.sh" version
"$SKILL_DIR/tools/device_info.sh" model

# Multi-device:
"$SKILL_DIR/tools/device_info.sh" -s  size

Install and launch apps:

"$SKILL_DIR/tools/app.sh" install path/to/app.apk
adb uninstall com.package.name
"$SKILL_DIR/tools/app.sh" start com.package.name/.ActivityName
"$SKILL_DIR/tools/app.sh" stop com.package.name

# Multi-device:
"$SKILL_DIR/tools/app.sh" -s  install path/to/app.apk
"$SKILL_DIR/tools/app.sh" -s  start com.package.name/.ActivityName

Logcat — always use the logcat wrapper for PID-filtered output:

# Dump recent logs (last 60 log entries)
"$SKILL_DIR/tools/logcat.sh" com.package.name -d

# Stream for 15s (default)
"$SKILL_DIR/tools/logcat.sh" com.package.name

# Stream for 30s
"$SKILL_DIR/tools/logcat.sh" com.package.name -t 30

# Clear and stream (capture logs from a specific action)
"$SKILL_DIR/tools/logcat.sh" com.package.name -c -t 10

# Fallback grep tags when PID unavailable
"$SKILL_DIR/tools/logcat.sh" com.package.name --tags "MapboxMap,GL"

The script handles PID lookup and fallback automatically. When streaming live logs for a specific action, use run_in_background in the Bash tool, perform the action, then check the output.

Files:

"$SKILL_DIR/tools/file.sh" pull /sdcard/path/on/device local_path
"$SKILL_DIR/tools/file.sh" push local_path /sdcard/path/on/device

# Multi-device:
"$SKILL_DIR/tools/file.sh" -s  pull /sdcard/path/on/device local_path

App data:

adb shell pm clear com.package.name
"$SKILL_DIR/tools/app.sh" list mapbox
"$SKILL_DIR/tools/device_info.sh" top    # returns first 100 lines; use raw adb for full output

Build & Deploy

Prefer android run from the android-cli skill — it builds, installs, and launches in one step:

android run --apks=$(android describe | jq -r '.apks.debug // "app/build/outputs/apk/debug/app-debug.apk"')

Use app.sh install only when you need explicit control: installing to a specific activity, a non-standard APK path, or when the Android CLI is unavailable:

# Find the Gradle project root (look for build.gradle.kts or build.gradle)
./gradlew :assembleDebug
"$SKILL_DIR/tools/app.sh" install /build/outputs/apk/debug/-debug.apk

For multi-module projects, identify the app module (often app/) and build that.

Screenshot and UI Interaction

Prefer android-cli for inspection — it returns richer data than raw screenshots:

# Primary: JSON layout tree (fast, no image needed)
android layout --pretty

# Secondary: annotated screenshot with numbered element labels
android screen capture --annotate -o /tmp/adb-skill/screen.png
# Then Read the PNG to see element numbers

# Resolve element coordinates from annotation labels
android screen resolve --screen /tmp/adb-skill/screen.png --string "#3"
# Returns:   — feed directly to input.sh

Workflow for clicking a UI element:

1. android layout --pretty — identify element by text/resourceId, use its center field
2. If element isn't in layout — fall back based on reason:

• WebView / animation: android screen capture --annotate -o /tmp/adb-skill/screen.png → Read PNG → android screen resolve --screen /tmp/adb-skill/screen.png --string "#"
• OpenGL/Vulkan canvas (SurfaceView, TextureView — e.g. maps, games, custom renderers): android layout and annotation overlays cannot see inside the canvas. Use "$SKILL_DIR/tools/screenshot.sh" + find_colors.sh instead — see Coordinate Precision section.

1. Tap: "$SKILL_DIR/tools/input.sh" tap
2. Confirm: android layout --diff or android screen capture --annotate -o /tmp/adb-skill/after.png

Fallback — raw screenshot when android-cli is unavailable:

"$SKILL_DIR/tools/screenshot.sh" -o /tmp/adb-skill/before_tap.png
"$SKILL_DIR/tools/screenshot.sh" -d 2 -o /tmp/adb-skill/after_tap.png   # 2s delay before capture

Fallback — raw UI hierarchy when android-cli is unavailable:

"$SKILL_DIR/tools/ui_dump.sh"

Read /tmp/adb-skill/ui_dump.xml; each node has a bounds attribute like [left,top][right,bottom] — tap the center.

IMPORTANT: Always save output files to /tmp/adb-skill/. This ensures the Read(/tmp/adb-skill/) permission rule covers them without prompting.

Input commands:

"$SKILL_DIR/tools/input.sh" tap  
"$SKILL_DIR/tools/input.sh" swipe     
"$SKILL_DIR/tools/input.sh" text "hello"
"$SKILL_DIR/tools/input.sh" keyevent KEYCODE_BACK
"$SKILL_DIR/tools/input.sh" keyevent KEYCODE_HOME
"$SKILL_DIR/tools/input.sh" keyevent KEYCODE_ENTER

# Wait before input (e.g. after animation):
"$SKILL_DIR/tools/input.sh" -d 1 tap  

# Multi-device:
"$SKILL_DIR/tools/input.sh" -s  tap  
"$SKILL_DIR/tools/input.sh" -d 1 -s  tap  
"$SKILL_DIR/tools/input.sh" -s  -d 1 tap    # -d/-s order is flexible

Cleanup: After a task is complete, always clean up screenshots and temp files:

# Single device:
"$SKILL_DIR/tools/cleanup.sh"

# Multi-device:
"$SKILL_DIR/tools/cleanup.sh" -s 

cleanup.sh also kills the ATX agent (com.github.uiautomator) to prevent a UiAutomationService already registered crash on the next uiautomator2 session. Always run cleanup between sequential test runs or before reinitializing gestures.

Coordinate Precision

The problem: The Read tool may display screenshots at different resolution than the original device capture. Visually estimating pixel coordinates from a resized image introduces systematic offset errors that compound with repeated gestures (especially double-tap zoom, which re-centers on the tap point).

Coordinate calculation workflow:

1. Get device screen size: "$SKILL_DIR/tools/device_info.sh" size → e.g., 1080x2400
2. Take screenshot — note the reported WxH from output: "$SKILL_DIR/tools/screenshot.sh" → /tmp/adb-skill/screenshot.png 2960x1848

(screenshot.sh is used here because it reports image dimensions needed for scale calculation)

1. Get UI container bounds:

• Prefer: android layout --pretty → find the MapView element, use its bounds field [L,T][R,B]
• Fallback: "$SKILL_DIR/tools/ui_dump.sh" → find bounds in /tmp/adb-skill/ui_dump.xml

1. Locate the target:

• For colored elements (markers, clusters, icons): use find_colors.sh (see below)
• For UI elements: use bounds from android layout or ui_dump.xml
• For estimated positions: express as a fraction of the container, then multiply by device dimensions

1. Convert image coordinates to device coordinates:

`` scale_x = device_width / image_width scale_y = device_height / image_height device_x = image_x * scale_x device_y = image_y * scale_y ``

Finding map elements by color:

find_colors.sh locates clusters of specific colors in screenshots and returns their center coordinates in image space.

# Find red markers
"$SKILL_DIR/tools/find_colors.sh" /tmp/adb-skill/screenshot.png red

# Find green clusters with custom tolerance
"$SKILL_DIR/tools/find_colors.sh" /tmp/adb-skill/screenshot.png green --tolerance 80

# Restrict search to the MapView area (skip toolbar/nav bar)
"$SKILL_DIR/tools/find_colors.sh" /tmp/adb-skill/screenshot.png red --bounds 0,120,2960,1848

# Custom RGB color
"$SKILL_DIR/tools/find_colors.sh" /tmp/adb-skill/screenshot.png --rgb 51,102,255

# JSON output for programmatic use
"$SKILL_DIR/tools/find_colors.sh" /tmp/adb-skill/screenshot.png red --json

Available named colors: red, green, blue, yellow, orange, white, black, cyan, magenta. Named colors are approximate — if a named color misses visible elements, use --rgb R,G,B to target the exact shade, or increase --tolerance. Default tolerance is 70; lower for stricter matching, higher (80-100) for broader matching. Use --min-size (default 10) to filter out noise.

Map Gestures

Before Any Gesture

1. Run "$SKILL_DIR/tools/device_info.sh" size to get screen resolution
2. Capture a screenshot to identify the map area vs UI overlays (toolbars, FABs, bottom bars):

• Prefer: android screen capture -o /tmp/adb-skill/map.png
• Fallback: "$SKILL_DIR/tools/screenshot.sh" -o /tmp/adb-skill/map.png

1. Compute the map center coordinates — target all gestures within the map area only

Iterative Zoom and Re-identification

• After each zoom gesture, ALWAYS re-screenshot and re-identify the target before the next gesture. Never chain multiple zooms without re-screenshotting.
• Double-tap zoom centers on the tap point — coordinate offset errors compound exponentially with each zoom.
• For precise targeting: zoom to the general area (2–3 steps with re-screenshot between each), then use find_colors.sh or android layout for exact coordinates of the shifted target.

Single-Touch Gestures (reliable)

Double tap to zoom in:

"$SKILL_DIR/tools/input.sh" tap   && sleep 0.08 && "$SKILL_DIR/tools/input.sh" tap  

Long press (e.g. to select a map point, drop a pin):

"$SKILL_DIR/tools/gesture_helper.sh" long_press   --duration 1000

Pan map:

"$SKILL_DIR/tools/input.sh" swipe    $((cy-300)) 300   # Pan up
"$SKILL_DIR/tools/input.sh" swipe    $((cy+300)) 300   # Pan down
"$SKILL_DIR/tools/input.sh" swipe   $((cx-300))  300    # Pan left
"$SKILL_DIR/tools/input.sh" swipe   $((cx+300))  300    # Pan right

> Note: There is no single-touch zoom-out gesture. To zoom out, use pinch_in (multi-touch) below.

Multi-Touch Gestures (via uiautomator2)

Multi-touch gestures use $SKILL_DIR/tools/gesture_helper.sh (a shell wrapper around gesture_helper.py using the local Python venv).

Setup prerequisites:

• A device must be connected — setup.sh installs the ATX agent on the device.
• If the venv becomes stale (e.g. after a Python upgrade), setup.sh auto-detects and recreates it.
• For multi-device setups, pass --serial (or -s ) to gesture_helper.sh.

Ensure the venv exists (idempotent — safe to re-run):

"$SKILL_DIR/tools/setup.sh"

Invoke gestures:

# Pinch zoom in (spread fingers outward)
"$SKILL_DIR/tools/gesture_helper.sh" pinch_out   --radius 200 --steps 30

# Pinch zoom out (pinch fingers inward) — this is the only way to zoom out
"$SKILL_DIR/tools/gesture_helper.sh" pinch_in   --radius 200 --steps 30

# Tilt map forward (two-finger swipe up)
"$SKILL_DIR/tools/gesture_helper.sh" tilt_up   --radius 300 --steps 30

# Tilt map back (two-finger swipe down)
"$SKILL_DIR/tools/gesture_helper.sh" tilt_down   --radius 300 --steps 30

# Rotate clockwise
"$SKILL_DIR/tools/gesture_helper.sh" rotate_cw   --radius 200 --steps 30

# Rotate counter-clockwise
"$SKILL_DIR/tools/gesture_helper.sh" rotate_ccw   --radius 200 --steps 30

# Multi-device: pass --serial / -s
"$SKILL_DIR/tools/gesture_helper.sh" pinch_out   -s 

If cx/cy are omitted, screen center is used. Adjust --radius for gesture magnitude (larger = more zoom/tilt/rotation). Adjust --steps for smoothness (higher = smoother but slower).

Tips

• When INSTALL_FAILED_UPDATE_INCOMPATIBLE occurs, uninstall the existing app first.
• Use "$SKILL_DIR/tools/app.sh" start with the fully qualified component name to launch exported activities.
• Parse and summarize logcat output — don't dump raw logs without explanation.
• Before UI interaction, run android layout first — it's faster and gives exact coordinates. Fall back to android screen capture --annotate for WebView/animation, and to screenshot.sh + find_colors.sh for OpenGL/Vulkan canvas content (SurfaceView, TextureView) which is invisible to both layout and annotation overlays.
• For map gesture coordinates, compute actual pixel values from screen size and screenshot — don't hardcode.
• When using a specific device, pass -s to ALL tool scripts and raw adb commands consistently throughout the session.

Recommended Permissions

Add these to ~/.claude/settings.json under permissions.allow to avoid repeated prompts for standard operations. Dangerous commands (adb uninstall, adb shell pm clear, adb shell rm) are intentionally excluded and will always prompt. Note: the logcat.sh, input.sh, gesture_helper.sh, and find_colors.sh patterns have a trailing space before * to enforce their required first argument.

"permissions": {
  "allow": [
    "Bash(*/skills/claude-adb-skill/tools/screenshot.sh*)",
    "Bash(*/skills/claude-adb-skill/tools/logcat.sh *)",
    "Bash(*/skills/claude-adb-skill/tools/ui_dump.sh*)",
    "Bash(*/skills/claude-adb-skill/tools/cleanup.sh*)",
    "Bash(*/skills/claude-adb-skill/tools/setup.sh*)",
    "Bash(*/skills/claude-adb-skill/tools/gesture_helper.sh *)",
    "Bash(*/skills/claude-adb-skill/tools/find_colors.sh *)",
    "Bash(*/skills/claude-adb-skill/tools/input.sh *)",
    "Bash(*/skills/claude-adb-skill/tools/app.sh*)",
    "Bash(*/skills/claude-adb-skill/tools/device_info.sh*)",
    "Bash(*/skills/claude-adb-skill/tools/file.sh*)",
    "Read(/tmp/adb-skill/)"
  ]
}

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: pengdev
• Source: pengdev/claude-adb-skill
• License: MIT

Install and usage instructions live in the source repository linked above.