Inspect a specific feature area of the page by providing a parent selector. Returns screenshot + all child elements with their styles, layout, and a summary of the feature
AI agents call inspect_feature_area to retrieve information from Mcp Browser Lens without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and reads DOM elements, styles, and visual data from a webpage. It performs passive inspection only — capturing information about the UI state without modifying, deleting, or executing external operations. The ability to specify a selector narrows the scope of inspection but does not elevate it beyond Read classification. No side effects occur on the target page or system.
From the tool's definition Tool name 'inspect_feature_area' and description state it 'Returns screenshot + all child elements with their styles, layout, and a summary' — these are query/retrieval operations with no modification or execution capability.
Attacks that exploit this kind of access
Inspect a specific feature area of the page by providing a parent selector. Returns screenshot + all child elements with their styles, layout, and a summary of the feature. It is categorised as a Read tool in the Mcp Browser Lens MCP Server, which means it retrieves data without modifying state.
Register the Mcp Browser Lens MCP server in PolicyLayer and add a rule for inspect_feature_area: 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 Browser Lens. Nothing to install.
inspect_feature_area 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 inspect_feature_area 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 inspect_feature_area. 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.
inspect_feature_area is provided by the Mcp Browser Lens MCP server (nano-step/mcp-browser-lens). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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