Discover all MCP servers installed in your editor/agent config
AI agents call scan_my_servers to retrieve information from MCPAmpel - MCP Security Scanner without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and lists configuration data to identify installed MCP servers. It performs read-only discovery/enumeration with no side effects, reversible actions, code execution, data destruction, or financial impact. The severity is low because the information exposed (list of installed servers) is typically already known to the system owner, though it could inform further reconnaissance in a multi-step attack.
From the tool's definition The tool is described as 'Discover all MCP servers installed in your editor/agent config' - a discovery and enumeration operation that retrieves information about installed servers without modifying, executing, or deleting anything.
Attacks that exploit this kind of access
Discover all MCP servers installed in your editor/agent config. It is categorised as a Read tool in the MCPAmpel - MCP Security Scanner MCP Server, which means it retrieves data without modifying state.
Register the MCPAmpel - MCP Security Scanner MCP server in PolicyLayer and add a rule for scan_my_servers: 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 MCPAmpel - MCP Security Scanner. Nothing to install.
scan_my_servers 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 scan_my_servers 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 scan_my_servers. 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.
scan_my_servers is provided by the MCPAmpel - MCP Security Scanner MCP server (pypi:mcpampel). 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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