Get an attribute value from an element
AI agents call browser_get_attribute to retrieve information from Playwright MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves an attribute value from a DOM element. It performs no mutation, does not execute code, and has no side effects beyond reading information already present on the page. The blast radius is minimal—misuse would only result in reading unintended data, not modification or execution. Classified as Read with low severity.
From the tool's definition Tool name 'browser_get_attribute' and description 'Get an attribute value from an element' indicate a read-only operation that retrieves data from a webpage without modifying state or triggering side effects.
Attacks that exploit this kind of access
Get an attribute value from an element. It is categorised as a Read tool in the Playwright MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Playwright MCP Server MCP server in PolicyLayer and add a rule for browser_get_attribute: 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 Playwright MCP Server. Nothing to install.
browser_get_attribute 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 browser_get_attribute 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 browser_get_attribute. 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.
browser_get_attribute is provided by the Playwright MCP Server MCP server (nolecram/build_mcp_server). 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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