load_storage_state
A read tool on the Playwright MCP server.
This record as markdown: /tools/alexrwilliam-playwright-mcp-server/load-storage-state.md
What load_storage_state does on Playwright MCP Server
AI agents call load_storage_state to retrieve information from Playwright MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why load_storage_state is rated Low
The tool appears to load/retrieve browser storage state rather than execute actions or modify data. While the empty description reduces confidence, the semantic meaning of 'load_storage_state' in a browser automation context suggests a read operation that retrieves stored client-side data for inspection or session restoration. There are no indicators of code execution, data destruction, or financial operations.
From the tool's definition Tool name 'load_storage_state' combined with context of Playwright browser automation suggests retrieving or querying stored browser state (cookies, session data, local storage).
Attacks that exploit this kind of access
The rule that runs load_storage_state safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Playwright MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For load_storage_state, this is the rule to start with:
load_storage_state is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Playwright MCP Server, apply this rule, and every load_storage_state call is checked against it from then on.
Questions about load_storage_state
load_storage_state is a read tool on the Playwright MCP Server MCP server. It is categorised as a Read tool in the Playwright MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Playwright MCP Server MCP server in PolicyLayer and add a rule for 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 Playwright MCP Server. Nothing to install.
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 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 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.
load_storage_state is provided by the Playwright MCP Server MCP server (alexrwilliam/playwright-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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