AI agents call get_common_galaxy_roles to retrieve information from Ludus FastMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to retrieve or list commonly-used Ansible Galaxy roles for reference during scenario or template creation. No description was provided, which lowers confidence slightly, but the 'get_' prefix and context of Ludus (a cyber range management system) indicate this is a read-only query operation with no data modification or execution capability. No blast radius from misuse.
From the tool's definition Tool name 'get_common_galaxy_roles' uses the 'get_' prefix, which typically indicates a retrieval operation. The name suggests fetching role definitions from Ansible Galaxy, a read-only lookup operation.
Documented attack patterns abuse exactly the kind of access get_common_galaxy_roles gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Ludus FastMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_common_galaxy_roles:
{
"version": "1",
"default": "deny",
"tools": {
"get_common_galaxy_roles": {}
}
}get_common_galaxy_roles is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_common_galaxy_roles. It is categorised as a Read tool in the Ludus FastMCP MCP Server, which means it retrieves data without modifying state.
Register the Ludus Fast MCP server in PolicyLayer and add a rule for get_common_galaxy_roles: 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 Ludus FastMCP. Nothing to install.
get_common_galaxy_roles 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_common_galaxy_roles 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_common_galaxy_roles. 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_common_galaxy_roles is provided by the Ludus Fast MCP server (tjnull/ludus-fastmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 201 Ludus FastMCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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201 Ludus FastMCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.