get_platform_fonts

Get platform font usage information for a DOM element. Args: node_id: Node ID of the element Returns: Information about platform fonts used to render text nodes

SERVERChrome Devtools SOURCEbenjaminr/chrome-devtools-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/benjaminr-chrome-devtools-mcp/get-platform-fonts.md

WHAT IT DOES

What get_platform_fonts does on Chrome Devtools

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

RISK

Why get_platform_fonts is rated Low

This is a pure data retrieval operation that queries font rendering information from a DOM element. There are no side effects, no code execution, no data modification, and no irreversible actions. It fits the 'Read' category as it simply queries and returns existing information about platform fonts.

From the tool's definition The tool 'get_platform_fonts' retrieves 'Information about platform fonts used to render text nodes' for a specified DOM element. It takes a node_id as input and returns data without modifying, deleting, or executing operations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_platform_fonts safely

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

get_platform_fonts Allowed

get_platform_fonts 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": {
    "get_platform_fonts": {}
  }
}

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

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

FAQ

Questions about get_platform_fonts

What does the get_platform_fonts tool do? +

Get platform font usage information for a DOM element. Args: node_id: Node ID of the element Returns: Information about platform fonts used to render text nodes. It is categorised as a Read tool in the Chrome Devtools MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_platform_fonts? +

Register the Chrome Devtools MCP server in PolicyLayer and add a rule for get_platform_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 Chrome Devtools. Nothing to install.

What risk level is get_platform_fonts? +

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

Can I rate-limit get_platform_fonts? +

Yes. Add a rate_limit block to the get_platform_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 get_platform_fonts completely? +

Set action: deny in the PolicyLayer policy for get_platform_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 get_platform_fonts? +

get_platform_fonts is provided by the Chrome Devtools MCP server (benjaminr/chrome-devtools-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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