List scrollable containers on the page.
AI agents call browser.get_scrollables to retrieve information from MCP Playwright Browser 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 DOM elements (scrollable containers) for inspection. It performs no modifications, executions, deletions, or financial operations. The information gathered could inform subsequent navigation actions, but the tool itself is purely observational. The blast radius if misused is minimal—an agent could enumerate page structure, which may reveal sensitive layouts but causes no direct harm.
From the tool's definition Tool name 'get_scrollables' and description 'List scrollable containers on the page' indicate a query/retrieval operation that extracts structural information from the DOM without modifying state or triggering side effects.
Attacks that exploit this kind of access
List scrollable containers on the page. It is categorised as a Read tool in the MCP Playwright Browser MCP Server, which means it retrieves data without modifying state.
Register the MCP Playwright Browser MCP server in PolicyLayer and add a rule for browser.get_scrollables: 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 MCP Playwright Browser. Nothing to install.
browser.get_scrollables 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_scrollables 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_scrollables. 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_scrollables is provided by the MCP Playwright Browser MCP server (mhrnqaruni/mcp-playwright-browser). 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.
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