close_cookie_banner · Visual Annotation MCP: Risk & Policy

WHAT IT DOES

What close_cookie_banner does on Visual Annotation MCP

AI agents invoke close_cookie_banner to trigger actions in Visual Annotation MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why close_cookie_banner needs a policy

This tool performs a browser interaction to dismiss cookie banners, which is an external operation (UI action). It's best-effort and low-impact, but it executes an action in the browser rather than merely reading data.

From the tool's definition 'cookie banner dismissal helper' — triggers a browser action (clicking/dismissing UI elements) on a web page

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

close_cookie_banner Rate-limited

close_cookie_banner stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "close_cookie_banner": {
      "limits": [
        {
          "counter": "close_cookie_banner_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Visual Annotation MCP, so you can run agents against it safely.

FAQ

Questions about close_cookie_banner

What does the close_cookie_banner tool do? +

Best-effort cookie banner dismissal helper. It is categorised as a Execute tool in the Visual Annotation MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on close_cookie_banner? +

Register the Visual Annotation MCP server in PolicyLayer and add a rule for close_cookie_banner: 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 Visual Annotation MCP. Nothing to install.

What risk level is close_cookie_banner? +

close_cookie_banner is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit close_cookie_banner? +

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

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

close_cookie_banner is provided by the Visual Annotation MCP server (mstocker1/visual_annotation_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.