Low Risk

capture_all_screen_modes

Capture screenshots for all valid C64 screen modes at once. Returns multiple images, one for each mode (standard_text, multicolor_text, extended_bg_color, standard_bitmap, multicolor_bitmap). Useful for debugging or when the active mode is uncertain.

How to control capture_all_screen_modes ↓

What capture_all_screen_modes does on Commodore 64 Ultimate Computer MCP Server

AI agents call capture_all_screen_modes to retrieve information from Commodore 64 Ultimate Computer MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

Why capture_all_screen_modes needs a policy

This tool only reads/captures the current screen state in multiple display modes. It has no side effects, does not modify any data, and simply retrieves visual output from the C64 device.

From the tool's definition Capture screenshots for all valid C64 screen modes at once. Returns multiple images

Documented attack patterns abuse exactly the kind of access capture_all_screen_modes gives an agent:

How to control capture_all_screen_modes

PolicyLayer is an MCP gateway — it sits between your AI agents and Commodore 64 Ultimate Computer MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for capture_all_screen_modes:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "capture_all_screen_modes": {}
  }
}

capture_all_screen_modes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Commodore 64 Ultimate Computer MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about capture_all_screen_modes

What does the capture_all_screen_modes tool do? +

Capture screenshots for all valid C64 screen modes at once. Returns multiple images, one for each mode (standard_text, multicolor_text, extended_bg_color, standard_bitmap, multicolor_bitmap). Useful for debugging or when the active mode is uncertain. It is categorised as a Read tool in the Commodore 64 Ultimate Computer MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on capture_all_screen_modes? +

Register the Commodore 64 Ultimate Computer MCP Server MCP server in PolicyLayer and add a rule for capture_all_screen_modes: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Commodore 64 Ultimate Computer MCP Server. Nothing to install.

What risk level is capture_all_screen_modes? +

capture_all_screen_modes is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit capture_all_screen_modes? +

Yes. Add a rate_limit block to the capture_all_screen_modes rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block capture_all_screen_modes completely? +

Set action: deny in the PolicyLayer policy for capture_all_screen_modes. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides capture_all_screen_modes? +

capture_all_screen_modes is provided by the Commodore 64 Ultimate Computer MCP Server MCP server (xphileby/c64u-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Commodore 64 Ultimate Computer MCP Server tool call.

Start from Commodore 64 Ultimate Computer MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

Free to start. No card required.

54 Commodore 64 Ultimate Computer MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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