Get a structured snapshot of the DOM tree. Automatically limits to 500 nodes for optimal performance.
AI agents call get_dom_snapshot to retrieve information from Browser MCP Bridge without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries the DOM structure of a web page without executing code, modifying content, or triggering side effects. It is purely informational, similar to inspecting page content. The 'get' prefix and snapshot language indicate read-only access. Blast radius is minimal—an AI could at worst analyze page structure, which poses no security or operational risk on its own.
From the tool's definition Tool name 'get_dom_snapshot' and description 'Get a structured snapshot of the DOM tree' indicate retrieval of page structure with no modification capability. The automatic 500-node limit further confirms it is a passive inspection operation.
Attacks that exploit this kind of access
Get a structured snapshot of the DOM tree. Automatically limits to 500 nodes for optimal performance. It is categorised as a Read tool in the Browser MCP Bridge MCP Server, which means it retrieves data without modifying state.
Register the Browser MCP Bridge MCP server in PolicyLayer and add a rule for get_dom_snapshot: 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 Browser MCP Bridge. Nothing to install.
get_dom_snapshot 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 get_dom_snapshot 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 get_dom_snapshot. 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.
get_dom_snapshot is provided by the Browser MCP Bridge MCP server (robhicks/browser-mcp-bridge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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