Clear all captured browser data: DOM, styles, screenshots, comparisons
AI agents call clear_data to permanently remove resources in Mcp Browser Lens — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently deletes all stored browser analysis data (DOM snapshots, styles, screenshots, and comparison history). This is irreversible and eliminates valuable debugging artifacts and audit trails that may be needed for accessibility validation, design verification, or troubleshooting. An agent misusing this tool could destroy critical analysis results.
From the tool's definition Tool name 'clear_data' combined with description 'Clear all captured browser data: DOM, styles, screenshots, comparisons' explicitly indicates irreversible deletion of accumulated data.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Clear all captured browser data: DOM, styles, screenshots, comparisons. It is categorised as a Destructive tool in the Mcp Browser Lens MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Mcp Browser Lens MCP server in PolicyLayer and add a rule for clear_data: 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.
clear_data is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the clear_data 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 clear_data. 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.
clear_data 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.
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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