get_display_config

THE RISK

Low Risk

Why get_display_config needs a policy

This tool only reads and returns existing display settings without modifying, executing, or deleting any data. The action is purely informational and has no ability to alter game state, execute commands, or cause any irreversible changes. It is a standard Read category operation with minimal risk.

From the tool's definition The tool 'gets' the current display configuration, which is a retrieval operation with no side effects. The description explicitly states it retrieves 'colors, fonts, visibility options' for the web viewer.

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

POLICY

How to control get_display_config

PolicyLayer is an MCP gateway — it sits between your AI agents and DMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_display_config:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_display_config": {}
  }
}

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

Create a free account and register DMCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 204 DMCP tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about get_display_config

What does the get_display_config tool do? +

Get the current display configuration for the web viewer (colors, fonts, visibility options). It is categorised as a Read tool in the DMCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_display_config? +

Register the D MCP server in PolicyLayer and add a rule for get_display_config: 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 DMCP. Nothing to install.

What risk level is get_display_config? +

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

Can I rate-limit get_display_config? +

Yes. Add a rate_limit block to the get_display_config 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 get_display_config completely? +

Set action: deny in the PolicyLayer policy for get_display_config. 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 get_display_config? +

get_display_config is provided by the D MCP server (shawnrushefsky/dmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every DMCP tool call.

Start from DMCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →