cleanup_expired_sessions · MCP Selenium WebDriver MCP

WHAT IT DOES

What cleanup_expired_sessions does on MCP Selenium WebDriver

AI agents use cleanup_expired_sessions to create or update resources in MCP Selenium WebDriver — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP Selenium WebDriver environment.

WHY IT NEEDS A POLICY

Why cleanup_expired_sessions needs a policy

An AI agent can call cleanup_expired_sessions faster than any human can review — one bad instruction and it creates or modifies resources in MCP Selenium WebDriver by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

cleanup_expired_sessions Rate-limited

cleanup_expired_sessions 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": {
    "cleanup_expired_sessions": {
      "limits": [
        {
          "counter": "cleanup_expired_sessions_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about cleanup_expired_sessions

What does the cleanup_expired_sessions tool do? +

Limpia las sesiones expiradas manualmente. It is categorised as a Write tool in the MCP Selenium WebDriver MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on cleanup_expired_sessions? +

Register the MCP Selenium WebDriver MCP server in PolicyLayer and add a rule for cleanup_expired_sessions: 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 Selenium WebDriver. Nothing to install.

What risk level is cleanup_expired_sessions? +

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

Can I rate-limit cleanup_expired_sessions? +

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

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

cleanup_expired_sessions is provided by the MCP Selenium WebDriver MCP server (nixon-suarez/mcp-selenium-webdriver). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.