Get a list of pages open in the browser.
AI agents call list_pages to retrieve information from Chrome DevTools MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and lists data about currently open browser pages. It performs no modifications, deletions, code execution, or financial operations. The action is purely informational and read-only, making it a Read category tool with low severity since it only exposes browser state information that an attacker could gather through inspection anyway.
From the tool's definition Tool name 'list_pages' and description 'Get a list of pages open in the browser' indicates a query operation that retrieves information about browser state with no side effects.
Attacks that exploit this kind of access
Get a list of pages open in the browser. It is categorised as a Read tool in the Chrome DevTools MCP MCP Server, which means it retrieves data without modifying state.
Register the Chrome DevTools MCP server in PolicyLayer and add a rule for list_pages: 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 MCP. Nothing to install.
list_pages 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 list_pages 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 list_pages. 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.
list_pages is provided by the Chrome DevTools MCP server (shay5555-gif/chrome-devtools-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.
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