List recent console logs and exceptions captured via CDP.
AI agents call browser.list_console_messages to retrieve information from MCP Playwright Browser without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only diagnostic tool that queries and returns console messages already emitted by a web page. It retrieves existing logs and exceptions without triggering actions, modifying state, or causing side effects. The blast radius if misused is minimal; an AI agent could only infer information from logs, not alter system behavior or external state.
From the tool's definition Tool name and description indicate it 'List[s] recent console logs and exceptions' — a retrieval operation with no side effects. It reads captured data via CDP without modifying, deleting, or executing code.
Attacks that exploit this kind of access
List recent console logs and exceptions captured via CDP. It is categorised as a Read tool in the MCP Playwright Browser MCP Server, which means it retrieves data without modifying state.
Register the MCP Playwright Browser MCP server in PolicyLayer and add a rule for browser.list_console_messages: 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 MCP Playwright Browser. Nothing to install.
browser.list_console_messages 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.list_console_messages 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.list_console_messages. 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.list_console_messages is provided by the MCP Playwright Browser MCP server (mhrnqaruni/mcp-playwright-browser). 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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