list_fonts

List available fonts installed in GIMP. Parameters: - filter: Optional string to filter font names (case-insensitive substring match) Returns: {fonts: [font_name, ...], count}

ServerGimp
CategoryRead

How to control list_fonts ↓

WHAT IT DOES

What list_fonts does on Gimp

AI agents call list_fonts to retrieve information from Gimp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why list_fonts needs a policy

This tool retrieves and queries font information from GIMP's font registry without any side effects. It is purely informational—listing and filtering fonts for display purposes. It does not create, modify, delete, or execute anything. This is a straightforward Read category tool with low severity since enumerating fonts poses no security risk.

From the tool's definition Tool description states 'List available fonts installed in GIMP' and returns a read-only list of fonts with optional filtering. No modification, deletion, or execution occurs.

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

POLICY

How to control list_fonts

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

policy.json

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

list_fonts 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 Gimp — 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 →

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EXPLORE

Related tools and policies

More Gimp tools

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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 list_fonts

What does the list_fonts tool do? +

List available fonts installed in GIMP. Parameters: - filter: Optional string to filter font names (case-insensitive substring match) Returns: {fonts: [font_name, ...], count}. It is categorised as a Read tool in the Gimp MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_fonts? +

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

What risk level is list_fonts? +

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

Can I rate-limit list_fonts? +

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

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

list_fonts is provided by the Gimp MCP server (maorcc/gimp-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Gimp tool call.

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

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