describe_font

Describes a font family in detail, including its look and feel, supported styles, weights and how to use it.

SERVERMcp SOURCEhttps://design.googleapis.com/mcp

Low RISK CLASS

Category Read

Parameters 22 required

Recommended Allowedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/com-googleapis-design-mcp/describe-font.md

WHAT IT DOES

What describe_font does on Mcp

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

Parameter	Type	Required	Description
`platform`	string	Yes	Required. The platform in which the font family is going to be used.
`fontFamily`	string	Yes	Required. The full name of the font family to describe. Example: "Roboto", "Noto Sans".

Parameters from the server's own tool schema.

RISK

Why describe_font is rated Low

Even though describe_font only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs describe_font safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For describe_font, this is the rule to start with:

describe_font Allowed

describe_font is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp, apply this rule, and every describe_font call is checked against it from then on.

FAQ

Questions about describe_font

What does the describe_font tool do? +

Describes a font family in detail, including its look and feel, supported styles, weights and how to use it. It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.

What parameters does describe_font accept? +

describe_font accepts 2 parameters: platform, fontFamily. Required: platform, fontFamily. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on describe_font? +

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

What risk level is describe_font? +

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

Can I rate-limit describe_font? +

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

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

describe_font is provided by the MCP server (https://design.googleapis.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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