// SCAN REPORT

Vnc

20 tools. 14 can modify or destroy data without limits.

14 write tools that can modify data. Rate limits recommended.

Last updated: 12 Jun 2026

14 can modify or destroy data

6 read-only

20 tools total

Community server · catalogue entry verified 12/06/2026

How to control Vnc ↓

TOOL MAP

What Vnc exposes to your agents

Read (6) Write / Execute (14) Destructive / Financial (0)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

High Risk

The most dangerous Vnc tools

Execute · High click_at_current_position This tool performs a mouse click action on a remote desktop via VNC. Execute · High click_at_current_position_with_keys_held The tool performs a mouse click action (with modifier keys held) on a remote desktop via VNC. Execute · Medium move_mouse_to This tool triggers an external operation (mouse movement) on a remote desktop via VNC. Execute · High move_mouse_with_keys_and_mouse_button_held The tool appears to move the mouse while holding both keyboard keys and a mouse button, which is an interactive desktop control action (drag operations, selection, etc.).

14 of Vnc's 20 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control Vnc

PolicyLayer is an MCP gateway — it sits between your AI agents and Vnc, and nothing reaches the server without passing your rules. These are the rules we recommend:

Cap read operations

{
  "get_desktop_name": {
    "limits": [
      {
        "counter": "get_desktop_name_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register Vnc — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON VNC →

Free to start. No card required.

FULL CATALOGUE

All 20 Vnc tools

EXECUTE 14 tools

Execute click_at_current_position click_at_current_position Execute click_at_current_position_with_keys_held click_at_current_position_with_keys_held Execute move_mouse_to Moves the mouse to the coordinates (x, y) in the VNC session's workspace. Execute move_mouse_with_keys_and_mouse_button_held move_mouse_with_keys_and_mouse_button_held Execute move_mouse_with_keys_held Moves the mouse from (start_x, start_y) to (end_x, end_y) while holding a number of keys. Execute move_mouse_with_mouse_button_held move_mouse_with_mouse_button_held Execute strike_keys strike_keys Execute strike_keys_with_keys_held strike_keys_with_keys_held Execute strike_keys_with_mouse_button_and_keys_held strike_keys_with_mouse_button_and_keys_held Execute strike_keys_with_mouse_button_held strike_keys_with_mouse_button_held Execute write_string write_string Execute write_string_with_keys_held write_string_with_keys_held Execute write_string_with_mouse_button_and_keys_held write_string_with_mouse_button_and_keys_held Execute write_string_with_mouse_button_held write_string_with_mouse_button_held

READ 6 tools

Read get_desktop_name Returns the name of the current environment reported by the server. Read get_rectangle_of_screen get_rectangle_of_screen Read get_screen_resolution get_screen_resolution Read get_text_from_rectangle_of_screen get_text_from_rectangle_of_screen Read get_text_from_whole_screen_image Gets the text from the entire VNC session's workspace image using OCR. Read get_whole_screen_image Gets an image of the entire VNC session's workspace.

FAQ

Questions about Vnc

Is the Vnc MCP server safe to use without restrictions? +

The Vnc server is primarily read-only with 6 read tools. While it cannot modify data, an agent in a retry loop can make thousands of API calls per minute, exhausting rate limits and running up costs. Rate limiting is still recommended.

How many tools does the Vnc MCP server expose? +

20 tools across 2 categories: Read, Write. 6 are read-only. 14 can modify, create, or delete data.

How do I enforce a policy on Vnc? +

Register the Vnc MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every Vnc tool call.

Deterministic rules across all 20 Vnc tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON VNC →

Free to start. No card required.

20 Vnc tools catalogued and risk-classified — across an index of 43,000+ MCP servers.