LabscoMCP early access ↗
software-mansionMCP SERVER · OFFICIAL PROJECT

Argent

Let an agent drive an iOS simulator, an Android emulator or device, a TV, or an Electron app — tapping, typing, profiling, reading logs and capturing network traffic.

by software-mansion ↗Mobile & App Store Release✓ Official

LABSCO SUMMARY

An agent that can open your app, use it, and tell you why it is slow.

Most device-control tooling stops at tapping. This one keeps going into profiling and diagnostics — Hermes and Instruments traces, network capture, the native and React component trees — so a reproduction can turn into a diagnosis in the same session.

What it is

An agentic toolkit that gives an AI assistant direct control of real app targets: iOS simulators, Android emulators and physical devices over adb, Apple TV, Android TV and Fire TV, and Electron or Chromium apps over the Chrome DevTools Protocol.

What you get

  • A full interaction toolkit matched to each platform — tapping, swiping, pinching, typing, gestures and hardware buttons on mobile; the directional remote on TV; mouse, scroll and drag on desktop and web
  • Record and replay: capture a sequence of interactions once and have the agent replay it deterministically, so manual repros and smoke tests become repeatable
  • Visual regression — diff two screenshots, or a saved baseline against a live capture, with OCR- and font-aware comparison
  • Profiling with analysis: React Native (Hermes), React DevTools, and native Xcode Instruments or Android Perfetto sessions, down to fiber renders, CPU hotspots and cross-correlated commit-versus-hang reports
  • Debugging surfaces — inspect logs, capture network traffic from both JS fetch and native, evaluate JS in the running app, and walk the native UIKit and React component trees
  • For Electron and Chromium: drive tabs, read and write cookies and storage, walk the DOM and inspect network over CDP
  • React Native support with no extra setup — build, launch and iterate on an RN project as with any native app
  • A CLI alongside the MCP server: argent tools lists what the tool-server exposes with describe <YOUR_TOOL_NAME> for detail, argent run invokes one by name, and argent server manages the shared tool-server

Requirements

Node.js 20.12 or later. npx @swmansion/argent@latest init installs the package, detects your editor and registers the MCP server; use pnpm dlx instead in a pnpm project where npm's devEngines check refuses to run npx. Per platform: macOS with Xcode for iOS and tvOS, Android SDK Platform Tools (adb) on PATH for Android, the Vega SDK for Fire TV, and nothing extra for an Electron app already launched with --remote-debugging-port. init auto-configures Claude Code, Cursor, VS Code, Windsurf, Zed, Gemini CLI, Codex CLI, Hermes, opencode and Kiro. --local adds it to devDependencies and writes committable MCP config so teammates get the same setup from npm install. On Linux, Android emulators want KVM access; without /dev/kvm the emulator falls back to software emulation. Argent collects opt-out telemetry, disabled with argent telemetry disable. Source is Apache 2.0, but the per-platform simulator-server and ax-service binaries and the iOS native devtools libraries are proprietary and licensed only for use within this project.

Setup effort

One command — npx @swmansion/argent@latest init

See installation options