rmx_monospace

THE RISK

Low Risk

Why rmx_monospace needs a policy

The description is empty and the name alone ('rmx_monospace') is ambiguous — it could be a read operation (analyzing monospace metrics), a write operation (adjusting spacing to monospace), or something else entirely. Without further evidence, classification defaults to Other with low confidence.

From the tool's definition Tool name 'rmx_monospace' and empty description provide no actionable detail about what the tool does.

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

POLICY

How to control rmx_monospace

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "rmx_monospace": {
      "limits": [
        {
          "counter": "rmx_monospace_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

rmx_monospace gets a rate cap, and everything else on the server is denied unless you say otherwise.

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

SET A RULE FOR THIS TOOL →

Free to start. No card required.

EXPLORE

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All 41 Glyphs tools →

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Tool risk categories → How PolicyLayer classifies MCP tools by what they can do.
MCP tool → What an MCP tool is and how clients discover and call it.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about rmx_monospace

What does the rmx_monospace tool do? +

rmx_monospace. It is categorised as a Other tool in the Glyphs MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on rmx_monospace? +

Register the Glyphs MCP server in PolicyLayer and add a rule for rmx_monospace: 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 Glyphs. Nothing to install.

What risk level is rmx_monospace? +

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

Can I rate-limit rmx_monospace? +

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

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

rmx_monospace is provided by the Glyphs MCP server (nmassi/glyphs-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Glyphs tool call.

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

CHECK YOUR STACK →