Android MCP Server

The Android diagnostic & forensic MCP — when an app crashes, leaks memory, drains battery, or behaves unexpectedly, this is what you point at the device.

76 tools across logcat / dumpsys / package internals / system properties / processes. 5 MCP Prompts (crash-investigation, memory-leak-detection, permission-audit, app-startup-profile, ui-element-locator) and a device-health aggregation. Pure ADB, no Appium / uiautomator2 dependency. 2-tier security (write + shell gates).

What it does that others don't

• Diagnostic depth — logcat search/crash extraction, dumpsys (mem/gfx/cpu), getprop, processes, package internals, app intents, port forwards. Cross-platform competitors hide this surface.
• MCP Prompts (5) — crash-investigation, memory-leak-detection, ui-element-locator, app-startup-profile, permission-audit. Workflow templates the model invokes directly.
• Aggregation tools — device-health (battery + memory + cpu + network in one call), analyze-app (package info + memory + activities).
• 2-tier security — ANDROID_MCP_ALLOW_WRITE (gates installs/taps/pushes) and ANDROID_MCP_ALLOW_SHELL (gates arbitrary adb shell) are separate flags. Distinct trust levels.
• Pure ADB — no Appium, no uiautomator2, no Python bridge. Just the official Android Debug Bridge wrapped over child_process.
• Token-efficient by design — 56 schema-trim sweep, ANDROID_TOOLS/ANDROID_DISABLE 9 categories, search-tools meta.
• Apps SDK card — device-health renders as a snapshot card on ChatGPT clients (battery, RAM, Wi-Fi + 4-section grid) via _meta["openai/outputTemplate"]. Claude clients receive the same JSON content.
• stdio + Streamable HTTP — defaults to stdio. Set MCP_TRANSPORT=http for ChatGPT Apps SDK or remote clients (Bearer auth via MCP_HTTP_TOKEN).

Try this — 5 prompts

Connect the server to Claude Desktop or Claude Code, then paste any of these:

1. Crash investigation — "My app com.us-all.api keeps crashing on this Pixel 6 emulator. Pull the last crash log, the offending stack frames, and any recent permission changes."
2. Memory leak detection — "Trace memory growth for com.us-all.api over the last 5 minutes. Show heap deltas, GC pressure, and the largest allocators."
3. Battery drain attribution — "What's draining battery on this device? Top 5 consumers, duration of each, and current battery health."
4. Permission audit — "Audit installed 3rd-party apps for dangerous permissions (location/camera/contacts/microphone). Flag any app that hasn't been used in the last 30 days but holds these."
5. App startup profile — "Profile the cold-start of com.us-all.api — measure activity launch time, identify the slowest fragment init, and suggest where to add tracing."

When to use this vs mobile-next/mobile-mcp

mobile-next/mobile-mcp (4.7K★) is the cross-platform action-oriented MCP. Different problem space:

| | mobile-mcp | @us-all/android-mcp (this) | |--|---|---| | Platform | iOS + Android (cross-platform) | Android only (specialist) | | Posture | Action-oriented ("drive the app via NL") | Diagnostic ("tell me why it broke") | | UI surface | Accessibility-tree-first, action loops | UI hierarchy + screenshots + diagnostic dumps | | Diagnostic depth | minimal | logcat / dumpsys / getprop / processes / crashes | | Aggregations | — | device-health, analyze-app | | MCP Prompts | — | 5 (diagnostic-themed) | | Security gates | basic | 2-tier (write + shell separate) | | Distribution | broad (12+ IDE buttons) | npm + Docker |

Use both — they're complementary. mobile-mcp drives the device through your QA flows; this MCP tells you why it broke when something does. Especially:

• mobile-mcp finds the bug via UI exploration → this MCP captures the crash log + heap dump.
• mobile-mcp can't tell you why startup is slow → this MCP gives you dumpsys gfxinfo + activity launch timing.
• mobile-mcp can't reproduce a permission denial → this MCP shows the exact dumpsys package permission state and recent grants.

Install

Claude Desktop

{
  "mcpServers": {
    "android": {
      "command": "npx",
      "args": ["-y", "@us-all/android-mcp"],
      "env": {
        "ANDROID_MCP_ALLOW_WRITE": "true"
      }
    }
  }
}

Claude Code

claude mcp add android -s user \
  -e ANDROID_MCP_ALLOW_WRITE=true \
  -e ANDROID_MCP_ALLOW_SHELL=true \
  -- npx -y @us-all/android-mcp

Docker

docker run --rm \
  --device /dev/bus/usb \
  -e ANDROID_MCP_ALLOW_WRITE=true \
  ghcr.io/us-all/android-mcp-server:latest

Build from source

git clone https://github.com/us-all/android-mcp-server.git
cd android-mcp-server && pnpm install && pnpm build
node dist/index.js

Prerequisites

• ADB installed and on PATH (or set ADB_PATH)
• Android device or emulator with USB debugging enabled
• For multi-device setups: ANDROID_SERIAL=<serial> to target a specific one

Configuration

| Variable | Required | Default | Description | |---|---|---|---| | ANDROID_HOME | ❌ | auto-detect | Android SDK path | | ADB_PATH | ❌ | adb (PATH) | Path to ADB binary | | ANDROID_SERIAL | ❌ | auto (single device) | Target device serial | | ANDROID_MCP_ALLOW_WRITE | ❌ | false | Enable write operations (install, tap, push) | | ANDROID_MCP_ALLOW_SHELL | ❌ | false | Enable arbitrary adb shell execution | | ANDROID_TOOLS | ❌ | — | Comma-sep allowlist of categories. Biggest token saver. | | ANDROID_DISABLE | ❌ | — | Comma-sep denylist. Ignored when ANDROID_TOOLS is set. | | MCP_TRANSPORT | ❌ | stdio | http to enable Streamable HTTP transport | | MCP_HTTP_TOKEN | conditional | — | Bearer token. Required when MCP_TRANSPORT=http | | MCP_HTTP_PORT | ❌ | 3000 | HTTP listen port | | MCP_HTTP_HOST | ❌ | 127.0.0.1 | HTTP bind host (DNS rebinding protection auto-enabled for localhost) | | MCP_HTTP_SKIP_AUTH | ❌ | false | Skip Bearer auth — e.g. behind a reverse proxy that handles it |

Categories (9): device, apps, ui, logcat, emulator, files, system, debug, shell (always-gated by ANDROID_MCP_ALLOW_SHELL), plus always-on meta.

When MCP_TRANSPORT=http: POST /mcp (Bearer-auth JSON-RPC) + GET /health (public liveness).

Token efficiency

| Scenario | Tools | Schema tokens | vs default | |----------|------:|--------------:|-----------:| | default (all categories) | 76 | 9,200 | — | | typical (ANDROID_TOOLS=device,ui,apps,logcat) | 37 | 5,000 | −46% | | narrow (ANDROID_TOOLS=device,ui) | 19 | 2,500 | −73% |

Plus search-tools meta-tool (always enabled) for runtime tool discovery.

Read-only mode (default)

By default, only read operations are permitted. Write operations (tap, install-app, push-file, etc.) return an error unless ANDROID_MCP_ALLOW_WRITE=true. Shell command execution requires a separate ANDROID_MCP_ALLOW_SHELL=true for additional security — even with write enabled, raw shell stays blocked unless this is explicitly set.

MCP Prompts (5)

Workflow templates available via MCP prompts/list:

• crash-investigation — pull crash logs + stack frames + recent permission changes for a target package.
• memory-leak-detection — track heap delta over a window; cluster by allocator.
• ui-element-locator — find a UI element by visual + accessibility hints; return tap coordinates.
• app-startup-profile — cold-start profile: activity launch + fragment init + first frame.
• permission-audit — flag dangerous permissions held by under-used 3rd-party apps.

MCP Resources

URI-based read-only entities:

• android://devices — connected devices
• android://device/{serial} — device details (model/brand/version/display)
• android://app/{packageName}/activities — activities exposed by a package (exported/launchable flags)
• android://device/{serial}/processes — running processes

Tools (76)

9 categories. Use search-tools to discover at runtime; full list collapsed below.

| Category | Tools | |----------|------:| | System (battery / network / settings / display / orientation / port-fwd / wifi / mobile-data) | 19 | | Apps (install / launch / permissions / intents / data clear) | 14 | | UI (tap / swipe / screenshot / hierarchy / accessibility / annotated tap-by-index / screen recording) | 14 | | Emulator (AVD start/stop, snapshot mgmt) | 7 | | Device (list / info / properties / wireless connect) | 5 | | Debug (bugreport / mem / gfx / cpu / doctor) | 5 | | Logcat (capture / filter / clear / crash extract) | 4 | | Files (list / pull / push / delete) | 4 | | Shell (gated execute-shell) | 1 | | Aggregations (device-health, analyze-app) | 2 | | Meta (search-tools) | 1 |

Device (5)

list-devices, get-device-info, get-device-properties, connect-device, disconnect-device

Apps (14)

list-packages, get-package-info, install-app, uninstall-app, launch-app, stop-app, clear-app-data, grant-permission, revoke-permission, open-url, send-broadcast, get-current-activity, is-app-installed, get-app-intents

UI Automation (14)

take-screenshot, dump-ui-hierarchy, ui-snapshot-a11y, tap, long-press, swipe, input-text, press-key, drag-and-drop, start-screen-recording, pull-screen-recording, double-tap, take-annotated-screenshot, tap-element

Logcat (4)

get-logcat, clear-logcat, search-logcat, get-crash-logs

Emulator (7)

list-avds, start-emulator, stop-emulator, list-snapshots, load-snapshot, save-snapshot, delete-snapshot

Files (4)

list-files, pull-file, push-file, delete-file

System (19)

get-battery-info, get-network-info, change-setting, get-setting, set-display-size, set-display-density, keep-screen-on, port-forward, reverse-forward, list-forwards, remove-forward, toggle-wifi, toggle-mobile-data, open-notification, lock-device, unlock-device, get-orientation, set-orientation, list-settings

Debug (5)

bugreport, get-mem-info, get-gfx-info, get-cpu-info, doctor

Shell (1)

execute-shell — gated by ANDROID_MCP_ALLOW_SHELL

Aggregations

device-health — battery + memory + cpu + network in one call (~7KB response, 4 sub-systems with caveats). analyze-app — package info + memory + activities aggregation.

Meta

search-tools — query other tools by keyword; always enabled.

Architecture

Claude → MCP stdio → src/index.ts
                      ├── adb.ts (execFile wrapper)
                      ├── tools/utils.ts (wrapToolHandler, shellEscape, validation)
                      └── tools/{device,apps,ui,logcat,emulator,files,system,debug,shell,aggregations}.ts
                                  ↓
                          ADB CLI (USB / TCP-IP / Emulator)
                                  ↓
                          Android Device

Built on @us-all/mcp-toolkit:

• extractFields — token-efficient response projections (skipped for ADB flat-array endpoints)
• aggregate(fetchers, caveats) — fan-out helper for device-health / analyze-app
• createWrapToolHandler — WriteBlockedError/ShellBlockedError passthrough + structured ADB errors ({code, stderr})
• wrapImageToolHandler (Android-only) — base64 PNG sanitization
• search-tools meta-tool

Security

• Read-only by default. Writes blocked without ANDROID_MCP_ALLOW_WRITE=true.
• Shell gating separate. execute-shell blocked without ANDROID_MCP_ALLOW_SHELL=true even with write enabled — distinct trust levels.
• Shell injection safe. shellEscape for single-quote-based escape; input validation via zod regex whitelists for setting keys, package names, permissions, components, broadcast actions/extras.
• Path-traversal blocked. Device paths require absolute + no .. + no shell metachars.
• Error sanitization. API keys, tokens, passwords redacted from all error outputs.

Tech stack

Node.js 22+ • TypeScript strict ESM • pnpm 10 • @modelcontextprotocol/sdk 1.29+ • zod v4 • fast-xml-parser • vitest (fork pool isolation).

License

MIT