browser_screenshot

Take browser page screenshot

SERVERClaude Mobile SOURCEalexgladkov/claude-in-mobile

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/alexgladkov-claude-in-mobile/browser-screenshot.md

WHAT IT DOES

What browser_screenshot does on Claude Mobile

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

RISK

Why browser_screenshot is rated Low

Screenshots are non-destructive read operations that merely capture and return visual information. There are no side effects, data modifications, code execution, or resource consumption beyond normal rendering. The most severe use case would be exposure of sensitive information visible on screen, but the tool itself performs no mutation or external operation.

From the tool's definition Tool description states 'Take browser page screenshot' — a retrieval operation that captures visual data from the browser without modifying state or triggering actions.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs browser_screenshot safely

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

browser_screenshot Allowed

browser_screenshot 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": {
    "browser_screenshot": {}
  }
}

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

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

FAQ

Questions about browser_screenshot

What does the browser_screenshot tool do? +

Take browser page screenshot. It is categorised as a Read tool in the Claude Mobile MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on browser_screenshot? +

Register the Claude Mobile MCP server in PolicyLayer and add a rule for browser_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 Claude Mobile. Nothing to install.

What risk level is browser_screenshot? +

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

Can I rate-limit browser_screenshot? +

Yes. Add a rate_limit block to the browser_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 browser_screenshot completely? +

Set action: deny in the PolicyLayer policy for browser_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 browser_screenshot? +

browser_screenshot is provided by the Claude Mobile MCP server (alexgladkov/claude-in-mobile). 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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