This record as markdown: /tools/cowork-bench/browser-console-messages.md
What browser_console_messages does on Cowork Bench
AI agents call browser_console_messages to retrieve information from Cowork Bench without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why browser_console_messages is rated Low
This tool retrieves and returns console messages without creating, modifying, or deleting data. It is purely a query operation with no capability to affect system state or execute operations. The blast radius of misuse is minimal—an agent could learn about application behavior or see logged data, but cannot cause harm.
From the tool's definition Tool name 'browser_console_messages' and description 'Returns all console messages' indicate retrieval of browser console output with no modification or side effects.
Attacks that exploit this kind of access
The rule that runs browser_console_messages safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Cowork Bench, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For browser_console_messages, this is the rule to start with:
browser_console_messages is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Cowork Bench, apply this rule, and every browser_console_messages call is checked against it from then on.
Questions about browser_console_messages
Returns all console messages. It is categorised as a Read tool in the Cowork Bench MCP Server, which means it retrieves data without modifying state.
Register the Cowork Bench MCP server in PolicyLayer and add a rule for browser_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 Cowork Bench. Nothing to install.
browser_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_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_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_console_messages is provided by the Cowork Bench MCP server (0717376/cowork_bench). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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