browser_shadow_query

Find an element by CSS selector, piercing shadow DOM boundaries.

SERVERTermux Browser Pilot SOURCEsalviz/termux-browser-pilot

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/salviz-termux-browser-pilot/browser-shadow-query.md

WHAT IT DOES

What browser_shadow_query does on Termux Browser Pilot

AI agents call browser_shadow_query to retrieve information from Termux Browser Pilot 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_shadow_query is rated Low

This tool performs element discovery and inspection within a browser's DOM (including shadow DOM), which is a read-only operation. It does not execute scripts, trigger navigation, modify data, delete content, or move financial resources.

From the tool's definition The tool 'browser_shadow_query' is described as 'Find an element by CSS selector, piercing shadow DOM boundaries.' This is fundamentally a query operation that retrieves/locates elements without modifying state or triggering side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs browser_shadow_query safely

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

browser_shadow_query Allowed

browser_shadow_query 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_shadow_query": {}
  }
}

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

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

FAQ

Questions about browser_shadow_query

What does the browser_shadow_query tool do? +

Find an element by CSS selector, piercing shadow DOM boundaries. It is categorised as a Read tool in the Termux Browser Pilot MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on browser_shadow_query? +

Register the Termux Browser Pilot MCP server in PolicyLayer and add a rule for browser_shadow_query: 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 Termux Browser Pilot. Nothing to install.

What risk level is browser_shadow_query? +

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

Can I rate-limit browser_shadow_query? +

Yes. Add a rate_limit block to the browser_shadow_query 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_shadow_query completely? +

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

browser_shadow_query is provided by the Termux Browser Pilot MCP server (salviz/termux-browser-pilot). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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