browser_open_security_page · MCP: Risk & Policy

WHAT IT DOES

What browser_open_security_page does on Mcp

AI agents invoke browser_open_security_page to trigger actions in 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 browser_open_security_page needs a policy

This tool triggers a browser action (opening a page and maintaining a live session), which constitutes executing an external browser operation. It uses authentication context to access a security page and keeps a session alive, enabling further follow-up actions. The persistent session aspect increases risk as it could be used as a stepping stone for further privileged operations.

From the tool's definition Open the authenticated security page in a new browser session and keep the session alive for follow-up actions

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

browser_open_security_page Rate-limited

browser_open_security_page 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": {
    "browser_open_security_page": {
      "limits": [
        {
          "counter": "browser_open_security_page_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 Mcp, so you can run agents against it safely.

FAQ

Questions about browser_open_security_page

What does the browser_open_security_page tool do? +

Open the authenticated security page in a new browser session and keep the session alive for follow-up actions. It is categorised as a Execute tool in the 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 browser_open_security_page? +

Register the MCP server in PolicyLayer and add a rule for browser_open_security_page: 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 Mcp. Nothing to install.

What risk level is browser_open_security_page? +

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

Can I rate-limit browser_open_security_page? +

Yes. Add a rate_limit block to the browser_open_security_page 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_open_security_page completely? +

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

browser_open_security_page is provided by the MCP server (victormyschik/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.