puppeteer_screenshot

THE RISK

Low Risk

Why puppeteer_screenshot needs a policy

Screenshots retrieve visual data from the browser without altering any state, making transactions, or executing arbitrary operations. While the Puppeteer server enables browser automation (which can be Execute/Destructive via sibling tools like puppeteer_click or puppeteer_evaluate), this specific tool is purely observational.

From the tool's definition Tool description states 'Take a screenshot of the current page or a specific element' — a read-only operation that captures visual state without modifying, executing code, or triggering side effects.

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

POLICY

How to control puppeteer_screenshot

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

policy.json

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

puppeteer_screenshot 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 Puppeteer MCP Server — 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

More Puppeteer MCP Server tools

Execute puppeteer_evaluate Execute JavaScript in the browser console Execute puppeteer_navigate Navigate to a URL Execute puppeteer_click Click an element on the page Execute puppeteer_connect_active_tab Connect to an existing Chrome instance with remote debugging enabled Execute puppeteer_fill Fill out an input field Execute puppeteer_hover Hover an element on the page Execute puppeteer_select Select an element on the page with Select tag

All 8 Puppeteer MCP Server tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

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 puppeteer_screenshot

What does the puppeteer_screenshot tool do? +

Take a screenshot of the current page or a specific element. It is categorised as a Read tool in the Puppeteer MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on puppeteer_screenshot? +

Register the Puppeteer MCP Server MCP server in PolicyLayer and add a rule for puppeteer_screenshot: 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 Puppeteer MCP Server. Nothing to install.

What risk level is puppeteer_screenshot? +

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

Can I rate-limit puppeteer_screenshot? +

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

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

puppeteer_screenshot is provided by the Puppeteer MCP Server MCP server (merajmehrabi/puppeteer-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Puppeteer MCP Server tool call.

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

CHECK YOUR STACK →