Get information about an iframe. Use this before performing actions inside frames.
AI agents call frame_locator to retrieve information from MCP Playwright Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves/queries information about iframe elements to enable navigation within frames. It performs no mutations, deletions, financial transactions, or external execution—it is purely informational and read-only. Low severity due to minimal blast radius: the only risk is reading DOM/frame metadata that could inform malicious downstream actions, but the tool itself is passive.
From the tool's definition Tool name 'frame_locator' and description 'Get information about an iframe' indicate a retrieval operation that queries iframe properties without side effects.
Attacks that exploit this kind of access
Get information about an iframe. Use this before performing actions inside frames. It is categorised as a Read tool in the MCP Playwright Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Playwright Server MCP server in PolicyLayer and add a rule for frame_locator: 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 Server. Nothing to install.
frame_locator 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 frame_locator 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 frame_locator. 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.
frame_locator is provided by the MCP Playwright Server MCP server (j0hanz/playwright-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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