crow_browser_save_session

Save cookies and local storage to a file for later restoration.

SERVERCrow SOURCEkh0pper/crow

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/kh0pper-crow/crow-browser-save-session.md

WHAT IT DOES

What crow_browser_save_session does on Crow

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

RISK

Why crow_browser_save_session is rated Medium

This tool modifies persistent storage by writing browser session data (cookies and local storage) to a file. While it is reversible (the file can be deleted or overwritten), it represents a data modification action.

From the tool's definition Tool description explicitly states 'Save cookies and local storage to a file', which involves creating and writing session data to persistent storage.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs crow_browser_save_session safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Crow, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For crow_browser_save_session, this is the rule to start with:

crow_browser_save_session Rate-limited

crow_browser_save_session 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": {
    "crow_browser_save_session": {
      "limits": [
        {
          "counter": "crow_browser_save_session_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 Crow, apply this rule, and every crow_browser_save_session call is checked against it from then on.

FAQ

Questions about crow_browser_save_session

What does the crow_browser_save_session tool do? +

Save cookies and local storage to a file for later restoration. It is categorised as a Write tool in the Crow MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on crow_browser_save_session? +

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

What risk level is crow_browser_save_session? +

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

Can I rate-limit crow_browser_save_session? +

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

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

crow_browser_save_session is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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