Load browser storage state from a JSON file.
AI agents call cloak_load_storage_state to retrieve information from CloakBrowser MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool reads browser storage state (cookies, localStorage, sessionStorage, etc.) from a file and populates the browser session. While it is fundamentally a read operation, the severity is elevated to medium because: (1) loading storage state can restore authenticated sessions or sensitive data; (2) in an adversarial context, an AI agent could load a state file containing malicious session data or hijacked…
From the tool's definition Tool name and description: 'Load browser storage state from a JSON file.' The verb 'load' indicates retrieval of data from persistent storage without modification.
Attacks that exploit this kind of access
Load browser storage state from a JSON file. It is categorised as a Read tool in the CloakBrowser MCP Server MCP Server, which means it retrieves data without modifying state.
Register the CloakBrowser MCP Server MCP server in PolicyLayer and add a rule for cloak_load_storage_state: 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 CloakBrowser MCP Server. Nothing to install.
cloak_load_storage_state is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the cloak_load_storage_state 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.
Set action: deny in the PolicyLayer policy for cloak_load_storage_state. 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.
cloak_load_storage_state is provided by the CloakBrowser MCP Server MCP server (miwoomiwoo/cloakbrowser-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →