extract
AI agents call extract to retrieve information from WebControl without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Despite the empty description, the tool name 'extract' combined with its context among sibling tools that are clearly Read operations (get_html, get_accessibility_tree) indicates this likely retrieves or parses structured content from a webpage without modifying state. No evidence of side effects, execution, or destructive action.
From the tool's definition Tool named 'extract' on a headless browser automation server alongside tools like 'get_html', 'get_accessibility_tree', and 'get_network_capture'. Tool description is empty, but contextual siblings strongly suggest data retrieval.
Attacks that exploit this kind of access
extract. It is categorised as a Read tool in the WebControl MCP Server, which means it retrieves data without modifying state.
Register the WebControl MCP server in PolicyLayer and add a rule for extract: 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 WebControl. Nothing to install.
extract 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 extract 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 extract. 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.
extract is provided by the WebControl MCP server (matansht/webcontrol). 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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