AI agents call list_mcps to retrieve information from Mcpcute without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a query/list operation that retrieves information about available MCP servers. It has no capability to modify, delete, or execute anything—purely informational. Severity is low because listing metadata has minimal blast radius even if misused by an agent.
From the tool's definition Tool name 'list_mcps' and description indicates it lists/retrieves MCP servers without modifying any data. The description fragment '[EXPLICIT ONLY - Do NOT use unless the user explicitly mentions' suggests read-only metadata retrieval with no side effects.
Attacks that exploit this kind of access
[EXPLICIT ONLY - Do NOT use unless the user explicitly mentions. It is categorised as a Read tool in the Mcpcute MCP Server, which means it retrieves data without modifying state.
Register the Mcpcute MCP server in PolicyLayer and add a rule for list_mcps: 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 Mcpcute. Nothing to install.
list_mcps 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 list_mcps 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 list_mcps. 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.
list_mcps is provided by the Mcpcute MCP server (zhigang1992/mcpcute). 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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