High-risk tools in Browserbase MCP Server
5 of the 9 tools in Browserbase MCP Server are classified as high risk. This page profiles those tools specifically, with recommended policy actions and the attack patterns that target them.
Every operation listed below is an action PolicyLayer recommends controlling at the transport layer. Open any tool to see the full profile, risk score, and YAML policy snippet.
Tools at high risk
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browserbase_session_closeExecuteClose the current Browserbase session and reset the active context.
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browserbase_session_createExecuteCreate or reuse a Browserbase browser session and set it as active.
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browserbase_stagehand_actExecutePerform a single action on the page (e.g., click, type).
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browserbase_stagehand_agentExecuteExecute a task autonomously using Gemini Computer Use agent. The agent will navigate and interact with web pages to complete the given task.
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browserbase_stagehand_navigateExecuteNavigate to a URL in the browser. Only use this tool with URLs you
Attacks that target this class
High-risk tools in any server share these documented attack patterns. Each links to the full case and the defensive policy.