AI agents call listTabs to retrieve information from MCP Server Generator without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The 'list' prefix is strongly indicative of a Read operation that queries and returns data about open tabs. With no side effects or capability to modify, execute, or destroy data, this falls squarely into the Read category with low severity. Confidence is reduced from 1.0 only due to the empty description, which prevents full verification of the tool's exact behavior.
From the tool's definition Tool name 'listTabs' is an enumeration/query function that retrieves browser tab information; no description provided, but the name and context alongside browserStatus and other inspection tools indicate this is a passive listing operation without…
Documented attack patterns abuse exactly the kind of access listTabs gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Server Generator, and nothing reaches the server without passing your rules. This is the rule we recommend for listTabs:
{
"version": "1",
"default": "deny",
"tools": {
"listTabs": {}
}
}listTabs is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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listTabs. It is categorised as a Read tool in the MCP Server Generator MCP Server, which means it retrieves data without modifying state.
Register the MCP Server Generator MCP server in PolicyLayer and add a rule for listTabs: 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 Server Generator. Nothing to install.
listTabs 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 listTabs 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 listTabs. 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.
listTabs is provided by the MCP Server Generator MCP server (serhatuzbas/mcp-server-generator). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Server Generator, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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79 MCP Server Generator tools catalogued and risk-classified — across an index of 43,000+ MCP servers.