SLOPSHOPPER

mobile-mcp

Mobile automation for Claude Code: the mobile-mcp server, and /mobile-mirror, a live, clickable device screen in a pane.

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★ 8,810v1.0.7Apache-2.0updated 2026-10-09mobile-next/mobile-mcp/plugin
A shopper browsing a rack in a slop shop
Preview · a replayed session in a sandbox
claude · ~/work/app · mobile-mcp
│ ┃ mobile-mirror ✕ › fix the failing auth test and add an audit log call │ ┃ Waiting for the first frame… │ ⏺ Read(src/auth.ts) │ ⎿ Read 6 lines │ ⏺ Update(src/auth.ts) │ ⎿ Added 2 lines, removed 1 line │ ⏺ Bash(bun test) │ ⎿ 3 pass, 1 fail │ │ ● Done. refresh now rejects expired claims and logs an audit event. │ │ ✻ Worked for 42s · done 4:20 PM │ │ › /mobile-mirror │ │ ────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── › ? for shortcuts

Draws

Pane · mobile-mirror
Waiting for the first frame…
README

Mobile Next - MCP server for Mobile Development and Automation | iOS, Android, Simulator, Emulator, and Real Devices

English | 日本語 | 简体中文

This is an MCP Server that enables scalable mobile automation, development through a platform-agnostic interface, eliminating the need for distinct iOS or Android knowledge. You can run it on emulators, simulators, and real devices (iOS and Android).

This server allows Agents and LLMs to interact with native iOS/Android applications and devices through structured accessibility snapshots or coordinate-based taps based on screenshots.

Works with Claude Code, Codex, Gemini, GitHub Copilot, Antigravity — or any MCP-compatible client.

Run it against devices on your own machine, or against real iOS and Android devices in the cloud with Mobile Next Cloud — same tools, no local setup.

<h4 align="center"> <a href="https://github.com/mobile-next/mobile-mcp"> <img src="https://img.shields.io/github/stars/mobile-next/mobile-mcp" alt="Mobile Next Stars" /> </a> <a href="https://www.npmjs.com/package/@mobilenext/mobile-mcp"> <img src="https://img.shields.io/npm/dm/@mobilenext/mobile-mcp?logo=npm&style=flat&color=red" alt="npm" /> </a> <a href="https://github.com/mobile-next/mobile-mcp/releases"> </a> <a href="https://insiders.vscode.dev/redirect?url=vscode%3Amcp%2Finstall%3F%7B%22name%22%3A%22mobile-mcp%22%2C%22command%22%3A%22npx%22%2C%22args%22%3A%5B%22-y%22%2C%22%40mobilenext%2Fmobile-mcp%40latest%22%5D%7D"> <img src="https://img.shields.io/badge/VS_Code-VS_Code?style=flat-square&label=Install%20Server&color=0098FF" alt="Install in VS Code" /> </a> <a href="https://github.com/mobile-next/mobile-mcp/wiki"> <img src="https://img.shields.io/badge/documentation-wiki-blue" alt="wiki" /> </a> <a href="https://mobilenext.ai/join-slack?utm_source=github&utm_medium=readme&utm_campaign=mobile-mcp&utm_content=badge"> <img src="https://img.shields.io/badge/join-Slack-blueviolet?logo=slack&style=flat" alt="join on Slack" /> </a> </h4>

<a href="https://www.star-history.com/?repos=mobile-next%2Fmobile-mcp"> <img alt="GitHub Trending Repository of the Day" src="https://api.star-history.com/badge?repo=mobile-next/mobile-mcp&type=trending" /> </a>

https://github.com/user-attachments/assets/bb084777-beb3-4930-ae6f-8d3fe694ddde

<a href="https://github.com/mobile-next/"> <img alt="mobile-mcp" src="https://raw.githubusercontent.com/mobile-next/mobile-next-assets/refs/heads/main/mobile-mcp-banner.png" width="600" /> </a>

Main use cases

How we help to scale mobile automation:

  • 📲 Native app automation (iOS and Android) for testing or data-entry scenarios.
  • 📝 Scripted flows and form interactions without manually controlling simulators/emulators or real devices (iPhone, Samsung, Google Pixel etc)
  • 🧭 Automating multi-step user journeys driven by an LLM
  • 👆 General-purpose mobile application interaction for agent-based frameworks
  • 🤖 Enables agent-to-agent communication for mobile automation usecases, data extraction

Main Features

  • 🚀 Accessibility-first — fast and cheap: drives apps from the native accessibility tree (no vision model, no image tokens), falling back to screenshots + coordinates only when needed.
  • 📱 One API, every target: the same tools work across iOS and Android — simulators, emulators, and real devices.
  • 🧠 No platform expertise required: no XCUITest, no Espresso, no per-platform glue — describe the goal and the agent does it.
  • 🧰 Full device control: taps, swipes, and gestures; app install/launch/terminate; screen recording; hardware buttons; deep links; orientation.
  • 📊 Structured, deterministic output: reads real UI elements and extracts structured data, cutting the ambiguity of screenshot-only approaches.
  • 🪞 Device mirroring in Claude Code: for Claude Code running in Ghostty or kitty. Install the plugin and run /mobile-mirror to see the device's live screen in a side pane, then tap, type and press Home/Back without leaving the terminal.

<img alt="/mobile-mirror showing an iOS simulator beside a Claude Code session" src="docs/screenshots/mobile-mirror.png" width="800" />

🎯 Platform Support

TargetSupportedSetup
iOS Simulator✅Xcode + a booted simulator (xcrun simctl)
iOS Real Device✅Device connected over USB and trusted
Android Emulator✅Android SDK + running emulator (adb)
Android Real Device✅adb + USB debugging enabled & authorized

🔧 Available MCP Tools

Device Management

  • mobile_list_available_devices - List all available devices (simulators, emulators, and real devices)
  • mobile_get_screen_size - Get the screen size of the mobile device in pixels
  • mobile_get_orientation - Get the current screen orientation of the device
  • mobile_set_orientation - Change the screen orientation (portrait/landscape)
  • mobile_fold_device - Fold or unfold a foldable device (iPhone Duo simulators, foldable Android emulators)
  • mobile_set_location - Override the GPS location reported by the device, or clear the override
  • mobile_clipboard - Read or replace the device clipboard

Remote Devices (Mobile Next Cloud)

  • mobile_login_to_cloud_provider - Authenticate this machine with the cloud device provider (browser-based device-code login)
  • mobile_list_remote_devices - List device models available to reserve from the cloud fleet
  • mobile_allocate_remote_device - Reserve a physical cloud device for exclusive use
  • mobile_release_remote_device - Release a reserved cloud device back to the fleet

App Management

  • mobile_list_apps - List all installed apps on the device
  • mobile_get_foreground_app - Get the app currently in the foreground
  • mobile_launch_app - Launch an app using its package name
  • mobile_terminate_app - Stop and terminate a running app
  • mobile_install_app - Install an app from file (.apk, .ipa, .app, .zip)
  • mobile_uninstall_app - Uninstall an app by its package name or bundle ID

Screen Interaction

  • mobile_take_screenshot - Take a screenshot to understand what's on screen
  • mobile_save_screenshot - Save a screenshot to a file
  • mobile_list_elements_on_screen - List UI elements with their coordinates and properties
  • mobile_click_on_screen_at_coordinates - Click at specific x,y coordinates or on an element by its ref
  • mobile_double_tap_on_screen - Double-tap at specific coordinates or on an element by its ref
  • mobile_long_press_on_screen_at_coordinates - Long press at specific coordinates or on an element by its ref
  • mobile_swipe_on_screen - Swipe in any direction (up, down, left, right)
  • mobile_start_screen_recording - Start recording the device screen to a video file
  • mobile_stop_screen_recording - Stop the active screen recording and save the video

Input & Navigation

  • mobile_type_keys - Type text into focused elements with optional submit
  • mobile_press_button - Press device buttons (HOME, BACK, VOLUME_UP/DOWN, ENTER, etc.)
  • mobile_open_url - Open http/https URLs in the device browser

Logs & Crash Reports

  • mobile_get_device_logs - Collect live device logs (logcat on Android, unified log on iOS), optionally saved to a file
  • mobile_list_crashes - List crash reports available on the device
  • mobile_get_crash - Get the full content of a crash report by its ID
  • mobile_batch_commands - Run multiple tools in sequence in a single call (e.g. click, type, click), optionally listing screen elements at the end

🏗️ Mobile MCP Architecture

<a href="https://raw.githubusercontent.com/mobile-next/mobile-next-assets/refs/heads/main/mobile-mcp-arch-1.png"> <img alt="mobile-mcp" src="https://raw.githubusercontent.com/mobile-next/mobile-next-assets/refs/heads/main/mobile-mcp-arch-1.png" width="600"> </a>

📚 Wiki page

More details in our wiki page for setup, configuration and debugging related questions.

Prerequisites

What you will need to connect MCP with your agent and mobile devices:

Installation and configuration

Standard config works in most of the tools:

{
  "mcpServers": {
    "mobile-mcp": {
      "command": "npx",
      "args": ["-y", "@mobilenext/mobile-mcp@latest"]
    }
  }
}

Add via the Amp VS Code extension settings screen or by updating your settings.json file:

"amp.mcpServers": {
  "mobile-mcp": {
    "command": "npx",
    "args": [
      "@mobilenext/mobile-mcp@latest"
    ]
  }
}

Amp CLI:

Run the following command in your terminal:

amp mcp add mobile-mcp -- npx @mobilenext/mobile-mcp@latest

Antigravity doesn't have a CLI command to add MCP servers, so add it manually. Edit ~/.gemini/config/mcp_config.json and add:

{
  "mcpServers": {
    "mobile-mcp": {
      "command": "npx",
      "args": ["-y", "@mobilenext/mobile-mcp@latest"]
    }
  }
}

To setup Cline, just add the json above to your MCP settings file.

More in our wiki

Install the plugin from inside Claude Code. It adds the Mobile MCP server and /mobile-mirror:

/plugin marketplace add mobile-next/mobile-mcp
/plugin install mobile-mcp@mobile-mcp

/mobile-mirror [device-id] opens a pane with the device's live screen. Click the picture to tap, type to send keys, and use the Home, Back, App Switch and URL buttons above it. The picture needs a terminal with the kitty graphics protocol, such as kitty or Ghostty.

If you can't use plugins, add only the MCP server with the Claude Code CLI:

claude mcp add mobile-mcp -- npx -y @mobilenext/mobile-mcp@latest

Follow the MCP install guide, use json configuration above.

Use the Codex CLI to add the Mobile MCP server:

codex mcp add mobile-mcp npx "@mobilenext/mobile-mcp@latest"

Alternatively, create or edit the configuration file ~/.codex/config.toml and add:

[mcp_servers.mobile-mcp]
command = "npx"
args = ["@mobilenext/mobile-mcp@latest"]

For more information, see the Codex MCP documentation.

Use the Copilot CLI to interactively add the Mobile MCP server:

/mcp add

You can edit the configuration file ~/.copilot/mcp-config.json and add:

{
  "mcpServers": {
    "mobile-mcp": {
      "type": "local",
      "command": "npx",
      "tools": [
        "*"
      ],
      "args": [
        "@mobilenext/mobile-mcp@latest"
      ]
    }
  }
}

For more information, see the Copilot CLI documentation.

Click the button to install:

<img src="https://cursor.com/deeplink/mcp-install-dark.svg" alt="Install in Cursor">

Or install manually:

Go to Cursor Settings -> MCP -> Add new MCP Server. Name to your liking, use command type with the command npx -y @mobilenext/mobile-mcp@latest. You can also verify config or add command like arguments via clicking Edit.

Use the Gemini CLI to add the Mobile MCP server:

gemini mcp add mobile-mcp npx -y @mobilenext/mobile-mcp@latest
Click the button to install:

Install in Goose

Or install manually:

Go to Advanced settings -> Extensions -> Add custom extension. Name to your liking, use type STDIO, and set the command to npx -y @mobilenext/mobile-mcp@latest. Click "Add Extension".

Follow the MCP Servers documentation. For example in .kiro/settings/mcp.json:

{
  "mcpServers": {
    "mobile-mcp": {
      "command": "npx",
      "args": [
        "@mobilenext/mobile-mcp@latest"
      ]
    }
  }
}

Follow the MCP Servers documentation. For example in ~/.config/opencode/opencode.json:

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mobile-mcp": {
      "type": "local",
      "command": [
        "npx",
        "@mobilenext/mobile-mcp@latest"
      ],
      "enabled": true
    }
  }
}

Open Windsurf settings, navigate to MCP servers, and add a new server using the command type with:

npx @mobilenext/mobile-mcp@latest

Or add the standard config under mcpServers in your settings as shown above.

Read more in our wiki! 🚀

✅ Verify it works

Once the server is configured, ask your agent to list devices:

list available devices

You should get back your running simulators, emulators, and connected devices. If you do, Mobile MCP is wired up correctly. If the list is empty, make sure a simulator or emulator is running (see Prerequisites) — for more help, check the wiki.

☁️ Scale up, use a cloud device

Want to scale to hundreds of devices? Use Mobile MCP in your CI/CD pipeline?

In your Agent, prompt:

log in to mobile next cloud and then show me which remote devices are available to me

Streamable HTTP Server Mode

By default, Mobile MCP runs over stdio. To start a Streamable HTTP server instead, use the --listen flag:

npx @mobilenext/mobile-mcp@latest --listen 3000

This binds to localhost:3000. To bind to a specific interface:

npx @mobilenext/mobile-mcp@latest --listen 0.0.0.0:3000

Then configure your MCP client to connect to http://<host>:3000/mcp (or https://…/mcp behind TLS). The endpoint accepts Streamable HTTP (POST on /mcp); remote mode is stateless (no session affinity required), which works well with Smithery and other horizontal hosts.

Migration note: --listen previously served the deprecated HTTP+SSE transport on /mcp. Clients must use Streamable HTTP against http(s)://host:port/mcp. The old pure-SSE flow on /mcp is no longer available.

When binding to localhost, Host-header DNS rebinding protection is enabled automatically.

Authorization

To require Bearer token authorization on the HTTP server, set the MOBILEMCP_AUTH environment variable:

MOBILEMCP_AUTH=my-secret-token npx @mobilenext/mobile-mcp@latest --listen 3000

When set, all requests must include the header Authorization: Bearer my-secret-token. When unset, the server accepts unauthenticated connections and logs a warning.

🛠️ How to Use

After adding the MCP server to your IDE/Client, you can instruct your AI assistant to use the available tools. For example, in Cursor's agent mode, you could use the prompts below to quickly validate, test and iterate on UI interactions, read information from screen, go through complex workflows. Be descriptive, straight to the point.

✨ Example Prompts

Workflows

You can specify detailed workflows in a single prompt, verify business logic, setup automations. You can go crazy:

Search for a video, comment, like and share it.

Find the video called " Beginner Recipe for Tonkotsu Ramen" by Way of
Ramen, click on like video, after liking write a comment " this was
delicious, will make it next Friday", share the video with the first
contact in your whatsapp list.

Download a successful step counter app, register, setup workout and 5-star the app

Find and Download a free "Pomodoro" app that has more than 1k stars.
Launch the app, register with my email, after registration find how to
start a pomodoro timer. When the pomodoro timer started, go back to the
app store and rate the app 5 stars, and leave a comment how useful the
app is.

Search in Substack, read, highlight, comment and save an article

Open Substack website, search for "Latest trends in AI automation 2025",
open the first article, highlight the section titled "Emerging AI trends",
and save article to reading list for later review, comment a random
paragraph summary.

Reserve a workout class, set timer

Open ClassPass, search for yoga classes tomorrow morning within 2 miles,
book the highest-rated class at 7 AM, confirm reservation,
setup a timer for the booked slot in the phone

Find a local event, setup calendar event

Open Eventbrite, search for AI startup meetup events happening this
weekend in "Austin, TX", select the most popular one, register and RSVP
yes to the event, setup a calendar event as a reminder.

Check weather forecast and send a Whatsapp/Telegram/Slack message

Open Weather app, check tomorrow's weather forecast for "Berlin", and
send the summary via Whatsapp/Telegram/Slack to contact "Lauren Trown",
thumbs up their response.
  • Schedule a meeting in Zoom and share invite via email
Open Zoom app, schedule a meeting titled "AI Hackathon" for tomorrow at
10AM with a duration of 1 hour, copy the invitation link, and send it via
Gmail to contacts "team@example.com".

Running & configuration

Environment variables

VariableDescriptionExample
MOBILEMCP_AUTHRequire a Bearer token on the Streamable HTTP server (--listen) — every request must then send Authorization: Bearer <token>.MOBILEMCP_AUTH=my-secret-token
MOBILEMCP_DISABLE_TELEMETRYDisable anonymous usage telemetry.MOBILEMCP_DISABLE_TELEMETRY=1
MOBILEMCP_ALLOW_UNSAFE_URLSAllow mobile_open_url to open non-standard URL schemes (blocked by default).MOBILEMCP_ALLOW_UNSAFE_URLS=1
MOBILEMCP_LEGACY_ROBOTUse the legacy platform-specific robots for Android devices and physical iOS devices. iOS simulators continue to use mobilecli.MOBILEMCP_LEGACY_ROBOT=1

Simulators, Emulators, and Real Devices

When launched, Mobile MCP can connect to:

  • iOS Simulators on macOS/Linux
  • Android Emulators on Linux/Windows/macOS
  • iOS or Android real devices (requires proper platform tools and drivers)

Make sure you have your mobile platform SDKs (Xcode, Android SDK) installed and configured properly before running Mobile Next Mobile MCP.

Telemetry

Mobile MCP collects anonymous usage telemetry via PostHog and Scarf. To disable it, set the MOBILEMCP_DISABLE_TELEMETRY environment variable:

MOBILEMCP_DISABLE_TELEMETRY=1 npx @mobilenext/mobile-mcp@latest

For json configurations:

{
  "mcpServers": {
    "mobile-mcp": {
      "command": "npx",
      "args": ["-y", "@mobilenext/mobile-mcp@latest"],
      "env": {
        "MOBILEMCP_DISABLE_TELEMETRY": "1"
      }
    }
  }
}

Running in "headless" mode on Simulators/Emulators

When you do not have a real device connected to your machine, you can run Mobile MCP with an emulator or simulator in the background.

For example, on Android:

  1. Start an emulator (avdmanager / emulator command).
  2. Run Mobile MCP with the desired flags

On iOS, you'll need Xcode and to run the Simulator before using Mobile MCP with that simulator instance.

  • xcrun simctl list
  • xcrun simctl boot "iPhone 16"

🧩 Part of Mobile Next

Mobile MCP is one piece of a toolkit for driving real mobile devices:

  • mobilewright — "Playwright for mobile." When you're ready to turn agent-driven exploration into repeatable, deterministic tests for iOS and Android, graduate to mobilewright.
  • mobilecli — the universal device CLI that Mobile MCP is built on: control devices, simulators, and emulators from the command line or a JSON-RPC API.
  • Mobile Next Cloud — the same stack, rented: real iOS and Android devices on demand. Just prompt your agent: log in to mobile next cloud and then show me which remote devices are available to me to get started.

🚀 Roadmap

We're continuously improving Mobile MCP. See what we're building next in ROADMAP.md — priorities are shaped heavily by community feedback, so tell us what you'd like to see.

🤝 Contributing

Contributions are welcome — code, docs, bug reports, and ideas.

Please also review our Code of Conduct.

Thanks to all contributors ❤️

We appreciate everyone who has helped improve this project.

<a href = "https://github.com/mobile-next/mobile-mcp/graphs/contributors"> <img src = "https://contrib.rocks/image?repo=mobile-next/mobile-mcp"/> </a>

Privacy Policy

Mobile MCP runs locally and communicates only with the devices you connect. See the Mobile Next privacy policy at https://mobilenext.ai/privacy for data collection, usage, retention, and contact information.

Source 5 files
hooks/register.tsx 243 lines
1import { atom, read, update } from "claude-code";
2import type { EngineInterface, Register } from "claude-code";
3
4import type { Shot, Target } from "../types";
5import { keysToActions } from "./keys";
6import { fitInside, pngSize } from "./png";
7
8// the key of the MCP server in this plugin's manifest
9const MCP_SERVER = "mobile-mcp";
10const COMMAND = "mobile-mirror";
11const PANE = "mobile-mirror";
12const VIEW_KEY = "view";
13const TAP_KEY = "tap";
14// frames rotate through a few files, so the terminal never reads one being rewritten
15const FRAME_FILES = 3;
16// large enough that the terminal never upscales it on a Retina pane; smaller is faster
17const SHOT_MAX_SIZE = 1600;
18const RETRY_AFTER_ERROR_MS = 1000;
19// the toolbar row, plus the URL field's row while it shows
20const TOOLBAR_ROWS = 1;
21const URL_FIELD_ROWS = 1;
22
23// kept in session state, not module variables, so they survive a reload of the mod
24const target = atom({ plugin: "mobile-mcp", key: "target" } as const, null as Target | null);
25// bumped to stop the running frame loop: a loop runs only while it holds the current value
26const streamId = atom({ plugin: "mobile-mcp", key: "streamId" } as const, 0);
27const isAskingUrl = atom({ plugin: "mobile-mcp", key: "isAskingUrl" } as const, false);
28const shot = atom({ plugin: "mobile-mcp", key: "shot" } as const, { file: "", generation: 0, width: 1, height: 1 } as Shot);
29
30type Device = { id: string; platform: string; state: string };
31type TapMessage = { x: number; y: number };
32type KeysMessage = { keys: string[] };
33// the runtime has Uint8Array.fromBase64; the TS lib does not declare it yet
34type Base64Decoder = { fromBase64(base64: string): Uint8Array };
35type McpResult = Awaited<ReturnType<EngineInterface["mcp"]["call"]>>;
36
37function firstText(content: unknown): string {
38	const block = (content as { type: string; text?: string }[]).find(b => b.type === "text");
39
40	return block?.text ?? "";
41}
42
43function frameFile(generation: number): string {
44	return `/tmp/mobile-mirror-${generation % FRAME_FILES}.png`;
45}
46
47// calls a mobile-mcp tool by the name this session runs the server under, connecting it on first use
48async function callMobileMcp($: EngineInterface, tool: string, args: Record<string, unknown> = {}): Promise<McpResult> {
49	const connection = await $.mcp.connect(MCP_SERVER);
50	if (!connection.isConnected) {
51		throw new Error(`mobile-mcp is not connected: ${connection.message}`);
52	}
53
54	return $.mcp.call(connection.server, tool, args);
55}
56
57// runs a toolbar action, and toasts only when it fails
58async function runAction($: EngineInterface, what: string, tool: string, args: Record<string, unknown>): Promise<void> {
59	try {
60		const result = await callMobileMcp($, tool, args);
61		if (result.isError) {
62			$.ui.toast(`${what} failed: ${firstText(result.content)}`);
63		}
64
65	} catch (error) {
66		$.ui.toast(`${what} failed: ${String(error)}`);
67	}
68}
69
70function pickDevice(devices: Device[], wanted: string | undefined): Device | undefined {
71	const online = devices.filter(d => d.state === "online");
72	if (wanted) {
73		return online.find(d => d.id === wanted);
74	}
75
76	return online.find(d => d.platform === "android") ?? online[0];
77}
78
79export const register: Register = on => {
80	// key batches are sent one after another, so typed text keeps its order
81	let typing: Promise<void> = Promise.resolve();
82
83	on("session.start", async ($, e, next) => {
84		await $.command.register({ name: COMMAND, description: "Mirror a device screen: live picture, taps, keys and buttons", argumentHint: "[device-id]" });
85
86		return next(e);
87	});
88
89	on("command.run", { command: COMMAND }, async ($, e) => {
90		const wanted = e.args.trim() || undefined;
91		const listed = await callMobileMcp($, "mobile_list_available_devices");
92		const { devices } = JSON.parse(firstText(listed.content)) as { devices: Device[] };
93		const device = pickDevice(devices, wanted);
94		if (!device) {
95			const online = devices.filter(d => d.state === "online").map(d => d.id);
96			return { text: `No online device${wanted ? ` "${wanted}"` : ""}. Online: ${online.join(", ") || "none"}` };
97		}
98
99		const sized = await callMobileMcp($, "mobile_get_screen_size", { device: device.id });
100		const match = /(\d+)x(\d+)/.exec(firstText(sized.content));
101		if (!match) {
102			return { text: `Could not read the screen size of ${device.id}.` };
103		}
104
105		await update($, target, () => ({
106			id: device.id,
107			platform: device.platform === "android" ? "android" : "ios",
108			screenWidth: Number(match[1]),
109			screenHeight: Number(match[2]),
110		}));
111		await update($, isAskingUrl, () => false);
112		const id = await update($, streamId, n => n + 1);
113
114		const captureFrame = async (generation: number): Promise<boolean> => {
115			const file = frameFile(generation);
116			const saved = await callMobileMcp($, "mobile_save_screenshot", { device: device.id, saveTo: file, maxSize: SHOT_MAX_SIZE });
117			if (saved.isError) {
118				return false;
119			}
120
121			const { base64 } = await $.fs.read(file, { as: "bytes" });
122			const size = pngSize((Uint8Array as unknown as Base64Decoder).fromBase64(base64));
123			const current = await read($, shot);
124			// a new shape (first frame, rotation) needs a full redraw; otherwise swap the pixels in place
125			if (current.generation === 0 || current.width !== size.width || current.height !== size.height) {
126				await update($, shot, () => ({ file, generation, ...size }));
127			} else {
128				await $.ui.blit({ requestId: PANE, key: VIEW_KEY, source: { file, format: "png", generation } }).catch(() => {});
129			}
130
131			return true;
132		};
133
134		const stream = async () => {
135			// the next frame is asked for as soon as the previous one is shown
136			for (let generation = 1; id === (await read($, streamId)); generation++) {
137				const isShown = await captureFrame(generation).catch(() => false);
138				if (!isShown) {
139					await $.clock.sleep(RETRY_AFTER_ERROR_MS);
140				}
141
142			}
143		};
144
145		await update($, shot, () => ({ file: "", generation: 0, width: 1, height: 1 }));
146		void stream();
147		await $.ui.open({ id: PANE, title: `mobile-mirror · ${device.id}` });
148
149		return { text: `Mirroring ${device.id}. Click the picture to tap, then type to send keys.` };
150	});
151
152	on("ui.message", async ($, e) => {
153		const device = await read($, target);
154		if (e.element !== TAP_KEY || !device) {
155			return {};
156		}
157
158		if ("keys" in (e.data as object)) {
159			const actions = keysToActions((e.data as KeysMessage).keys, device.platform);
160			typing = typing.then(async () => {
161				for (const action of actions) {
162					if (action.type === "text") {
163						await runAction($, "Typing", "mobile_type_keys", { device: device.id, text: action.text, submit: false });
164					} else {
165						await runAction($, `Press ${action.button}`, "mobile_press_button", { device: device.id, button: action.button });
166					}
167
168				}
169			});
170
171			return {};
172		}
173
174		const tap = e.data as TapMessage;
175		const x = Math.round(tap.x * device.screenWidth);
176		const y = Math.round(tap.y * device.screenHeight);
177		await runAction($, "Tap", "mobile_click_on_screen_at_coordinates", { device: device.id, x, y });
178
179		return {};
180	});
181
182	on("ui.close", async ($, e, next) => {
183		if (e.id === PANE) {
184			await update($, streamId, n => n + 1);
185		}
186
187		return next(e);
188	});
189
190	on("ui.render", { component: "Pane", requestId: PANE }, async ($, e) => {
191		const ui = $.ui.resolve(e);
192		const { Box, Text } = ui;
193		if (e.surface !== "terminal" || !("Image" in ui)) {
194			return <Text>mobile-mirror needs the terminal, in kitty or Ghostty.</Text>;
195		}
196
197		const { file, generation, width, height } = await read($, shot);
198		if (generation === 0) {
199			return <Text dimColor>Waiting for the first frame…</Text>;
200		}
201
202		const device = await read($, target);
203		if (!device) {
204			return <Text dimColor>Run /mobile-mirror to pick a device.</Text>;
205		}
206
207		const isAndroid = device.platform === "android";
208		const isAsking = await read($, isAskingUrl);
209		const roomForImage = e.props.scroll.bodyRows - TOOLBAR_ROWS - (isAsking ? URL_FIELD_ROWS : 0);
210		const size = fitInside(e.props.bodyColumns, roomForImage, width, height);
211		const { Button, Input } = ui;
212
213		const press = (button: string) => () => runAction($, `Press ${button}`, "mobile_press_button", { device: device.id, button });
214
215		const openUrl = async (url: string) => {
216			await update($, isAskingUrl, () => false);
217			if (!url.trim()) {
218				return;
219			}
220
221			await runAction($, `Open ${url.trim()}`, "mobile_open_url", { device: device.id, url: url.trim() });
222		};
223
224		return (
225			<Box flexDirection='column'>
226				<Box flexDirection='row' gap={1}>
227					<Button key='home' label='Home' onPress={press("HOME")} />
228					{isAndroid && <Button key='back' label='Back' onPress={press("BACK")} />}
229					{isAndroid && <Button key='app-switch' label='App Switch' onPress={press("APP_SWITCH")} />}
230					<Button key='url' label='URL' onPress={() => update($, isAskingUrl, asking => !asking)} />
231				</Box>
232				{isAsking && <Input key='url-field' label='URL ' placeholder='https://example.com' submitLabel='open' autoFocus onSubmit={openUrl} />}
233				<Box>
234					<ui.Image key={VIEW_KEY} source={{ file, format: "png", generation }} columns={size.columns} rows={size.rows} alt='device screen' />
235					<Box position='absolute' top={0} left={0}>
236						<ui.Client key={TAP_KEY} module='./tap.tsx' width={size.columns} height={size.rows} />
237					</Box>
238				</Box>
239			</Box>
240		);
241	});
242};
243
hooks/keys.ts 70 lines
1import type { Platform } from "../types";
2
3export type KeyAction = { type: "text"; text: string } | { type: "button"; button: string };
4
5// special key names the terminal reports, mapped to mobile_press_button buttons
6const ANDROID_BUTTONS: Record<string, string> = {
7	return: "ENTER",
8	backspace: "BACKSPACE",
9	delete: "BACKSPACE",
10	up: "DPAD_UP",
11	down: "DPAD_DOWN",
12	left: "DPAD_LEFT",
13	right: "DPAD_RIGHT",
14};
15
16const IOS_BUTTONS: Record<string, string> = {
17	return: "ENTER",
18};
19
20// ponytail: iOS has no BACKSPACE button in mobilecli, so it is typed as \b; unverified on a device
21const IOS_TEXT: Record<string, string> = {
22	backspace: "\b",
23	delete: "\b",
24};
25
26function actionFor(key: string, platform: Platform): KeyAction | undefined {
27	const buttons = platform === "android" ? ANDROID_BUTTONS : IOS_BUTTONS;
28	const button = buttons[key];
29	if (button) {
30		return { type: "button", button };
31	}
32
33	const text = platform === "ios" ? IOS_TEXT[key] : undefined;
34	if (text) {
35		return { type: "text", text };
36	}
37
38	if (key === "space") {
39		return { type: "text", text: " " };
40	}
41
42	// a single character is typed as is; any other named key is dropped
43	if ([...key].length === 1) {
44		return { type: "text", text: key };
45	}
46
47	return undefined;
48}
49
50// turns pressed keys into device actions, joining consecutive text into one type call
51export function keysToActions(keys: string[], platform: Platform): KeyAction[] {
52	const actions: KeyAction[] = [];
53	for (const key of keys) {
54		const action = actionFor(key, platform);
55		if (!action) {
56			continue;
57		}
58
59		const last = actions[actions.length - 1];
60		if (action.type === "text" && last?.type === "text") {
61			actions[actions.length - 1] = { type: "text", text: last.text + action.text };
62		} else {
63			actions.push(action);
64		}
65
66	}
67
68	return actions;
69}
70
hooks/png.ts 34 lines
1// width and height from a PNG's IHDR chunk, big-endian at bytes 16..23
2export function pngSize(bytes: Uint8Array): { width: number; height: number } {
3	const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
4
5	return { width: view.getUint32(16), height: view.getUint32(20) };
6}
7
8const MAX_CELLS = 255;
9// cell height / cell width of the terminal font, measured 17.3px / 8.1px; no API reports it, so tune per font
10export const CELL_ASPECT = 2.14;
11
12function clampCells(n: number): number {
13	return Math.max(1, Math.min(MAX_CELLS, Math.floor(n)));
14}
15
16// the largest box of cells that keeps the picture's aspect and fits inside maxColumns x maxRows
17export function fitInside(columnsLimit: number, rowsLimit: number, width: number, height: number): { columns: number; rows: number } {
18	const maxColumns = clampCells(columnsLimit);
19	const maxRows = clampCells(rowsLimit);
20	// a broken PNG header can report zero; without an aspect to keep, fill the box instead of dividing by zero
21	if (width <= 0 || height <= 0) {
22		return { columns: maxColumns, rows: maxRows };
23	}
24
25	const rowsAtFullWidth = (maxColumns * height) / width / CELL_ASPECT;
26	if (rowsAtFullWidth <= maxRows) {
27		return { columns: clampCells(maxColumns), rows: clampCells(rowsAtFullWidth) };
28	}
29
30	const columnsAtFullHeight = (maxRows * width * CELL_ASPECT) / height;
31
32	return { columns: clampCells(columnsAtFullHeight), rows: clampCells(maxRows) };
33}
34
hooks/tap.tsx 43 lines
1import type { ClientKeyEvent, ClientPointerEvent, ClientSurface } from "claude-code";
2
3type Pending = { keys: string[] };
4
5// a post per frame at most, and a later one replaces an undelivered one, so keys are sent in batches
6const FLUSH_MS = 50;
7
8// Laid over the screenshot: posts each left click as a fraction of the picture (0..1 on both axes),
9// and, once clicked, the keys typed while it holds the focus
10export default function TapInput(_props: unknown, surface: ClientSurface<Pending>) {
11	if (surface.state === undefined) {
12		const pending: Pending = { keys: [] };
13
14		surface.onPointer((e: ClientPointerEvent) => {
15			if (e.type !== "down" || e.button !== "left" || surface.columns === 0 || surface.rows === 0) {
16				return;
17			}
18
19			const x = e.fine?.x ?? e.x + 0.5;
20			const y = e.fine?.y ?? e.y + 0.5;
21			surface.post({ x: x / surface.columns, y: y / surface.rows });
22		});
23
24		surface.onKey((e: ClientKeyEvent) => {
25			pending.keys.push(e.key);
26		});
27
28		surface.every(FLUSH_MS, () => {
29			if (pending.keys.length === 0) {
30				return;
31			}
32
33			surface.post({ keys: pending.keys.splice(0) });
34		});
35
36		surface.setState(pending);
37	}
38
39	const { Box } = surface.elements;
40
41	return <Box width='100%' height='100%' />;
42}
43
types/index.d.ts 10 lines
1export type Shot = { file: string; generation: number; width: number; height: number };
2export type Platform = "android" | "ios";
3export type Target = { id: string; platform: Platform; screenWidth: number; screenHeight: number };
4
5declare module "claude-code" {
6	interface PluginState {
7		"mobile-mcp": { shot: Shot; target: Target | null; streamId: number; isAskingUrl: boolean }
8	}
9}
10