get_storage_key_for_frame

Get the storage key for a specific frame. Args: frame_id: Frame ID to get storage key for Returns: Storage key for the frame

SERVERChrome Devtools SOURCEbenjaminr/chrome-devtools-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/benjaminr-chrome-devtools-mcp/get-storage-key-for-frame.md

WHAT IT DOES

What get_storage_key_for_frame does on Chrome Devtools

AI agents call get_storage_key_for_frame to retrieve information from Chrome Devtools without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why get_storage_key_for_frame is rated Low

This tool retrieves metadata about a frame's storage key without creating, modifying, deleting, or executing any operations. It has no side effects and returns information only. Despite being part of a DevTools suite with other tools capable of destructive operations (clear_all_cookies, clear_storage_for_origin), this specific tool is purely informational and falls squarely within the Read category.

From the tool's definition Tool description states 'Get the storage key for a specific frame' with a return value of 'Storage key for the frame'. The verb 'Get' and the action of retrieving/querying a storage key without modification indicates a read-only operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_storage_key_for_frame safely

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

get_storage_key_for_frame Allowed

get_storage_key_for_frame is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_storage_key_for_frame": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Chrome Devtools, apply this rule, and every get_storage_key_for_frame call is checked against it from then on.

FAQ

Questions about get_storage_key_for_frame

What does the get_storage_key_for_frame tool do? +

Get the storage key for a specific frame. Args: frame_id: Frame ID to get storage key for Returns: Storage key for the frame. It is categorised as a Read tool in the Chrome Devtools MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_storage_key_for_frame? +

Register the Chrome Devtools MCP server in PolicyLayer and add a rule for get_storage_key_for_frame: 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 Chrome Devtools. Nothing to install.

What risk level is get_storage_key_for_frame? +

get_storage_key_for_frame is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_storage_key_for_frame? +

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

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

get_storage_key_for_frame is provided by the Chrome Devtools MCP server (benjaminr/chrome-devtools-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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