List available range templates from the community. Args: user_id: Optional user ID (admin only) Returns: List of range templates
AI agents call list_range_templates 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.
This tool retrieves and queries available templates without modifying, deleting, or executing any operations. The optional user_id parameter for admin-only filtering does not change the fundamental read-only nature of listing templates. No side effects or data modifications occur.
From the tool's definition Tool name is 'list_range_templates' and description states it 'List available range templates from the community' with a return value of 'List of range templates'. The 'list' operation is explicitly enumerated as a Read category action.
Risk signalsAdmin/system-level operation
Documented attack patterns abuse exactly the kind of access list_range_templates 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 list_range_templates:
{
"version": "1",
"default": "deny",
"tools": {
"list_range_templates": {}
}
}list_range_templates is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List available range templates from the community. Args: user_id: Optional user ID (admin only) Returns: List of range templates. 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 list_range_templates: 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.
list_range_templates 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_range_templates 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_range_templates. 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_range_templates 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.