manage_local_storage · Selenium MCP Server MCP

WHAT IT DOES

What manage_local_storage does on Selenium MCP Server

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

WHY IT NEEDS A POLICY

Why manage_local_storage needs a policy

Local storage management allows modification of data that persists across browser sessions, which could affect application state, user preferences, or cached credentials. However, it does not involve financial transactions, code execution on the system, or irreversible deletion of data outside the browser's control.

From the tool's definition Tool name 'manage_local_storage' and description 'manages browser local storage' indicate the tool can create, modify, or delete data stored in the browser's local storage.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

manage_local_storage Rate-limited

manage_local_storage 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": {
    "manage_local_storage": {
      "limits": [
        {
          "counter": "manage_local_storage_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 Selenium MCP Server, so you can run agents against it safely.

FAQ

Questions about manage_local_storage

What does the manage_local_storage tool do? +

manages browser local storage. It is categorised as a Write tool in the Selenium MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on manage_local_storage? +

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

What risk level is manage_local_storage? +

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

Can I rate-limit manage_local_storage? +

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

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

manage_local_storage is provided by the Selenium MCP Server MCP server (jyothishkumarav/selenium-mcp-server-python). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.