browser_snapshot

Get accessibility snapshot with element refs

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-snapshot.md

WHAT IT DOES

What browser_snapshot does on Claude Mobile

AI agents call browser_snapshot 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_snapshot is rated Low

This tool reads and returns UI accessibility data (element references and snapshot information) from a mobile device. It has no side effects on the device state, app data, or system configuration. It is purely informational, analogous to a screenshot or introspection query.

From the tool's definition Tool "browser_snapshot" retrieves "accessibility snapshot with element refs" — a query operation that captures UI state without modifying device state or triggering actions.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs browser_snapshot 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_snapshot, this is the rule to start with:

browser_snapshot Allowed

browser_snapshot 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_snapshot": {}
  }
}

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_snapshot call is checked against it from then on.

FAQ

Questions about browser_snapshot

What does the browser_snapshot tool do? +

Get accessibility snapshot with element refs. 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_snapshot? +

Register the Claude Mobile MCP server in PolicyLayer and add a rule for browser_snapshot: 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_snapshot? +

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

Can I rate-limit browser_snapshot? +

Yes. Add a rate_limit block to the browser_snapshot 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_snapshot completely? +

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

browser_snapshot 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.

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