kira-mcp 0.2.0

Local MCP server for AI agents: local YOLO-based UI-element detection (OmniParser-v2 icon detector) with per-element OCR, hash caching, and full keyboard / mouse / screen / clipboard control via pyautogui + mss.

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        local · MCP · computer-use

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kira-mcp is a local Model Context Protocol server that gives any MCP-compatible agent host (Claude Desktop, Claude Code, Cursor, Cline, Continue, …) full computer-use capabilities on the host machine.

Built and tuned for Windows. macOS and Linux are best-effort — most tools work, but some UI conventions differ.

• Vision — perceive_screen is the agent's one-shot "look at the screen" tool. It grabs the current display in memory, runs the local microsoft/OmniParser-v2 YOLO icon-detector on it, and returns an annotated image plus JSON with each element's {id, bbox, cx, cy, confidence} in absolute screen pixels — so the agent can pipe cx, cy straight into mouse_click. No API key, no network call.
• Desktop automation — pixel-accurate mouse control, keyboard input (incl. chords and key holds), and clipboard read/write via pyautogui, mss, and pyperclip.

The server speaks stdio JSON-RPC and is launched as a child process by your agent host.

Requirements

• Python 3.10+

• Platform extras (pyautogui needs them to actually drive input):

  OS	Setup
  Windows	Nothing extra — primary platform.
  macOS	Grant Accessibility permission to the terminal running the server: System Settings → Privacy & Security → Accessibility. First screenshot also prompts for Screen Recording.
  Linux	sudo apt install python3-tk python3-dev scrot xdotool (or the equivalent on your distro). X11 sessions only — Wayland blocks raw screen grabs (see Wayland note).

Install

From PyPI (recommended):

pip install kira-mcp

…or, for an isolated global install that won't pollute any project's site-packages:

pipx install kira-mcp

Either form installs the kira-mcp console script and registers every tool module.

The OmniParser-v2 YOLO icon-detector weights (icon_detect/model.pt, ~39 MB) ship inside the wheel — no separate download step. They are loaded and warmed up from disk at server startup.

Working on kira-mcp itself? Clone and install editable: git clone https://github.com/Anmol202005/kira-mcp.git && cd kira-mcp && pip install -e .

If your clone is missing the weights (e.g. a shallow checkout, or you stripped them), restore them with:

hf download microsoft/OmniParser-v2.0 \
  icon_detect/model.pt \
  icon_detect/model.yaml \
  --local-dir src/kira_mcp/weights

Or point to a model.pt elsewhere on disk by setting KIRA_YOLO_WEIGHTS in your environment.

Configure your agent host

Claude Desktop / Claude Code

Add to claude_desktop_config.json (Desktop) or via claude mcp add (Code):

{
  "mcpServers": {
    "kira-mcp": {
      "command": "kira-mcp"
    }
  }
}

Prefer not to rely on the installed script? Use the module form:

{
  "mcpServers": {
    "kira-mcp": {
      "command": "python",
      "args": ["-m", "kira_mcp"]
    }
  }
}

Restart your host. All kira-mcp tools will appear under the kira-mcp namespace.

Cursor / Cline / Continue / Windsurf

Identical shape — point the host's MCP server config at kira-mcp (or python -m kira_mcp).

Tools

Vision

Tool

Purpose

perceive_screen

One-shot perceive step: screenshots the current display (or a {x, y, width, height} region of it), runs the local OmniParser-v2 YOLO icon-detector on it, and returns BOTH an annotated image inline AND JSON with {width, height, count, elements}. Each element is {id, bbox, cx, cy, confidence} in absolute screen pixels — feed cx, cy directly into mouse_click. Model is loaded and warmed up at server startup, so there is no per-call cold start; typical latency 50-200ms on GPU, 300-800ms on CPU. No API key, no network call.

Mouse

Tool	Purpose
mouse_move	Move to absolute (x, y). duration=0 for instant.
mouse_position	Read the cursor's current (x, y).
mouse_click	Click left / middle / right. Optional (x, y) moves first; clicks for multi-click.
mouse_double_click	Double-click. Optional (x, y).
mouse_press / mouse_release	Hold and later release a button (drag-and-drop primitives).
mouse_drag	One-shot: move → press → drag to target → release.
mouse_scroll	Scroll up / down / left / right by N clicks.

Keyboard

Tool	Purpose
keyboard_type	Type literal text.
keyboard_tap	Press + release a key chord, e.g. ["ctrl", "c"], ["cmd", "shift", "t"].
keyboard_press / keyboard_release	Hold and later release keys (modifier-state primitives).
keyboard_key_check	Debug helper — resolve a key name to its pyautogui canonical form.

Key names accept any value from pyautogui.KEYBOARD_KEYS, plus common aliases (ctrl, alt, shift, cmd/command, win/windows/super, meta, esc/escape, enter/return, space/spacebar, pgup/pageup, pgdn/pagedown, del, ins).

Screen

Tool	Purpose
screen_size	{ width, height } of the main display. Useful for bound-checking, though perceive_screen already returns the screen dimensions in its response.

Clipboard

Tool	Purpose
clipboard_get	Read the system clipboard as text.
clipboard_set	Write text to the system clipboard.

Typical agent loop

perceive_screen()                             # → annotated JPEG inline + JSON: {width, height, elements: [{id, bbox, cx, cy, confidence}, …]}
# agent picks an element by id, reads its (cx, cy) — already in absolute screen pixels
mouse_click(x=cx, y=cy)
perceive_screen()                             # verify the action landed

One tool to look, one tool to act, repeat until done.

Layout

src/kira_mcp/
├── __main__.py        # entry — `python -m kira_mcp` or `kira-mcp`
├── _mcp.py            # shared FastMCP instance + system instructions
├── lib/
│   └── keys.py        # key-name normalization for pyautogui
└── tools/
    ├── __init__.py    # side-effect imports → registers tools
    ├── parse.py       # `perceive_screen` — screenshot + local YOLO icon-detector
    ├── screen.py      # `screen_size` + the `Region` model
    ├── mouse.py
    ├── keyboard.py
    └── clipboard.py

Add a new tool by writing a function decorated with @mcp.tool() (imported from kira_mcp._mcp) and importing the module from tools/__init__.py.

Local development

pip install -e .
python -m kira_mcp        # stdio server — drive it from your MCP host

Safety

pyautogui.FAILSAFE is enabled at startup — slamming the mouse to the top-left corner raises FailSafeException and aborts whatever the agent was doing. Leave it on. The server explicitly does not expose a way to disable it from tool calls.

Wayland note

On Linux Wayland sessions, raw X11 screen grabs return a black buffer. GNOME Wayland additionally blocks programmatic screenshots from unprivileged callers. If perceive_screen returns a black image (or no detections at all), log in to an X11 session, or switch to a Wayland compositor that ships wlr-screencopy (Hyprland, Sway, river, Niri) or a KDE Plasma session.

License

MIT — see LICENSE.