browser_clipboard_write

Write text to the Xvfb system clipboard.

SERVERTermux Browser Pilot SOURCEsalviz/termux-browser-pilot

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/salviz-termux-browser-pilot/browser-clipboard-write.md

WHAT IT DOES

What browser_clipboard_write does on Termux Browser Pilot

AI agents use browser_clipboard_write to create or update resources in Termux Browser Pilot, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Termux Browser Pilot environment.

RISK

Why browser_clipboard_write is rated Medium

This tool modifies clipboard state by writing text, which is reversible (subsequent writes can overwrite it). It is not destructive since clipboard modifications can be undone by writing different content. However, it could facilitate credential theft if an AI agent writes sensitive data to clipboard, or enable injection attacks if clipboard content is used by other applications.

From the tool's definition Tool name 'browser_clipboard_write' and description 'Write text to the Xvfb system clipboard' explicitly indicate data modification via clipboard write operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs browser_clipboard_write 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_clipboard_write, this is the rule to start with:

browser_clipboard_write Rate-limited

browser_clipboard_write stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "browser_clipboard_write": {
      "limits": [
        {
          "counter": "browser_clipboard_write_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT 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_clipboard_write call is checked against it from then on.

FAQ

Questions about browser_clipboard_write

What does the browser_clipboard_write tool do? +

Write text to the Xvfb system clipboard. It is categorised as a Write tool in the Termux Browser Pilot MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on browser_clipboard_write? +

Register the Termux Browser Pilot MCP server in PolicyLayer and add a rule for browser_clipboard_write: 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_clipboard_write? +

browser_clipboard_write is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit browser_clipboard_write? +

Yes. Add a rate_limit block to the browser_clipboard_write 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_clipboard_write completely? +

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

browser_clipboard_write 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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