Extracts structured information and text content from the current web page based on specific instructions
AI agents call browserbase_stagehand_extract to retrieve information from Browserbase MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs passive data extraction from web pages without creating, modifying, deleting, or executing any actions. It is purely informational and has no side effects on the target system. While it operates within a browser automation context, extraction itself is a Read operation. The blast radius is low since it cannot change state or trigger unintended side effects beyond reading what is already visible.
From the tool's definition Tool description explicitly states it 'extracts structured information and text content from the current web page' - this is a data retrieval operation with no modifications to the page or external systems.
Attacks that exploit this kind of access
Extracts structured information and text content from the current web page based on specific instructions. It is categorised as a Read tool in the Browserbase MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Browserbase MCP Server MCP server in PolicyLayer and add a rule for browserbase_stagehand_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 Browserbase MCP Server. Nothing to install.
browserbase_stagehand_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 browserbase_stagehand_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 browserbase_stagehand_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.
browserbase_stagehand_extract is provided by the Browserbase MCP Server MCP server (ronsdad/mcp-server-browserbase). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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