{
  "markdown": "# agentfenster MCP server\n\nThe agentfenster MCP server lets Claude Code and other MCP clients drive real\nWindows applications on a hidden second desktop inside your own session, with\nthe same logins, cookies and VPN, while you keep your screen, mouse and\nkeyboard. It is a local stdio server with 11 tools, from a one call task loop\ndown to single verified clicks.\n\nEvery action is verified against the window state afterwards. A click that\nlands nowhere is reported as a failure, never as a silent success.\n\nFull documentation: <https://agentfenster.com/mcp>\n\n> The MCP server ships with the agentfenster app, a commercial closed-source\n> Windows product. This repository is its public documentation and issue\n> tracker. It contains no product source code.\n\n## Install\n\n1. Install agentfenster on Windows 10 or 11 from <https://agentfenster.com>.\n   The MCP server is part of the app. Every plan starts with a 3-day trial, no\n   card and no account required.\n2. Register the server with Claude Code:\n\n```bash\nclaude mcp add agentfenster -- agentfenster-mcp\n```\n\nAny MCP client that can launch a local stdio server works the same way. Then\njust ask:\n\n```\n> open the character map on the agent desktop and turn on the advanced view\n```\n\n## The 11 tools\n\n| Tool | What it does |\n| --- | --- |\n| `list_windows` | Lists the windows this machine can drive, with title, class, minimized state and whether a picture can be captured. The starting point when you do not know the exact window title. |\n| `desktop_task` | Runs a full GUI task in one window and returns a single paragraph: what happened, whether it worked, and if not, which step failed and why. The click loop runs inside the server, so its retries never enter your context. |\n| `inspect_window` | Returns the capped, filtered element tree of one window as a compact list, for planning clicks yourself. Capped at 200 elements and never walked from the desktop root. |\n| `replay` | Lists recent runs, or returns one run's step-by-step log: every plan, every action, whether it changed anything, and a link to the visual replay in the app. |\n| `open_app` | Launches a program on the shared agent desktop and reports its first titled window. The agent desktop starts empty, so this is how anything gets onto it. |\n| `read_desktop` | Reads the compact element tree of a window on the agent desktop, one line per interactive element, no screenshot. Plan your clicks from this. |\n| `click` | Clicks one element, chosen by id or name from `read_desktop`, then verifies against the desktop state and states explicitly whether anything changed. |\n| `type_text` | Types text into one element on the agent desktop, then verifies whether anything changed. |\n| `press_key` | Presses a key or key combination such as `ctrl+s`, `enter`, `tab` or `alt+f4`, optionally focusing an element first, with verification afterwards. |\n| `scroll` | Scrolls a window or a specific pane and reports whether the content actually moved. A list that is already at the bottom reports no effect. |\n| `agent_windows` | Lists the windows currently open on the shared agent desktop, frontmost first, so you can pick one by a title substring. |\n\n## How it works\n\n- The agent works on a second Win32 desktop inside your session. It never takes\n  your foreground, mouse or keyboard, and you can watch it live in the app.\n- Tools read the UI Automation element tree instead of screenshots: one line per\n  interactive element, capped at 200 elements per window.\n- The click loop of `desktop_task` runs inside the server on a model endpoint\n  you configure, so its retries and intermediate steps never enter your context.\n- Risky actions such as delete, send, pay or install are denied by default on\n  MCP calls and reported, instead of blocking on a confirmation nobody can\n  answer.\n- agentfenster sends no telemetry. The only network traffic is the model\n  endpoint you configure for the click loop.\n\n## Requirements\n\n| | |\n| --- | --- |\n| Platform | Windows 10 or 11 |\n| Transport | stdio, local |\n| Runtime | Python 3.11 or newer, installed with the app |\n| Prerequisite | the agentfenster app (commercial, 3-day trial) |\n\n## Links\n\n- Product and download: <https://agentfenster.com>\n- MCP documentation: <https://agentfenster.com/mcp>\n- Pricing: <https://agentfenster.com/#pricing>\n- Discord: <https://discord.gg/J9MfKP255Y>\n- Support: <hello@agentfenster.com>\n- Privacy: <https://agentfenster.com/privacy>\n- Terms: <https://agentfenster.com/terms>\n\n## Issues\n\nUse the issue tracker of this repository for bug reports and questions about\nthe MCP server: tool behaviour, install problems, MCP client compatibility. For\nanything about the app itself, Discord and <hello@agentfenster.com> are faster.\n\n## Rights\n\nagentfenster is commercial closed-source software. No open-source license is\ngranted here. The text in this repository is published so that MCP users and\ndirectories can read, quote and link to it. Use of the agentfenster app itself\nis governed by the terms at <https://agentfenster.com/terms>.\n",
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