Get the current browser state. Returns information about the current browser session including the URL, page title, and whether a browser is open. Returns: - currentUrl: Current page URL - title: Current page title - isOpen: Whether a browser session is active - stealthMode: Whether stealth mode ...
Part of the Playwright Stealth server.
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AI agents call browser_get_state to retrieve information from Playwright Stealth without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though browser_get_state only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"browser_get_state": {}
}
}See the full Playwright Stealth policy for all 6 tools.
These attack patterns abuse exactly the kind of access browser_get_state gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Get the current browser state. Returns information about the current browser session including the URL, page title, and whether a browser is open. Returns: - currentUrl: Current page URL - title: Current page title - isOpen: Whether a browser session is active - stealthMode: Whether stealth mode is enabled - headless: Whether running in headless mode - proxyEnabled: Whether a proxy is configured - ignoreHttpsErrors: Whether HTTPS certificate errors are being ignored. It is categorised as a Read tool in the Playwright Stealth MCP Server, which means it retrieves data without modifying state.
Register the Playwright Stealth MCP server in PolicyLayer and add a rule for browser_get_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 Stealth. Nothing to install.
browser_get_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 browser_get_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 browser_get_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.
browser_get_state is provided by the Playwright Stealth MCP server (pulsemcp/mcp-servers). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 6 Playwright Stealth tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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