AI agents call get_gpos to retrieve information from LegacyMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves Group Policy Objects (GPOs) from Active Directory without modifying, executing, or deleting anything. It is a read-only query operation. Severity is medium rather than low because GPO data can reveal organizational security policies, domain configuration, and privilege information that could inform further attacks, but the tool itself has no direct destructive capability.
From the tool's definition Tool name 'get_gpos' and description 'Return all GPOs with display name, GUID, status' indicate data retrieval with no modification, creation, execution, or deletion of resources.
Attacks that exploit this kind of access
Return all GPOs with display name, GUID, status (enabled/disabled),. It is categorised as a Read tool in the LegacyMCP MCP Server, which means it retrieves data without modifying state.
Register the Legacy MCP server in PolicyLayer and add a rule for get_gpos: 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 LegacyMCP. Nothing to install.
get_gpos 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 get_gpos 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 get_gpos. 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.
get_gpos is provided by the Legacy MCP server (marco-lelli/legacy-mcp). 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.
Teams ship this data inside their own products. See what a licence covers →