Retrieves status for all hosts within a specific host group
AI agents call get_hosts_in_group_status to retrieve information from Nagios without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves status information from Nagios Core through CGI binaries with no side effects. It queries existing data about host group membership and status without creating, modifying, or deleting any resources. The operation is read-only and informational in nature, appropriate for monitoring dashboards or alerting systems.
From the tool's definition Tool name 'get_hosts_in_group_status' and description 'Retrieves status for all hosts within a specific host group' indicate a query operation that fetches monitoring data without modification.
Documented attack patterns abuse exactly the kind of access get_hosts_in_group_status gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Nagios, and nothing reaches the server without passing your rules. This is the rule we recommend for get_hosts_in_group_status:
{
"version": "1",
"default": "deny",
"tools": {
"get_hosts_in_group_status": {}
}
}get_hosts_in_group_status is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Retrieves status for all hosts within a specific host group. It is categorised as a Read tool in the Nagios MCP Server, which means it retrieves data without modifying state.
Register the Nagios MCP server in PolicyLayer and add a rule for get_hosts_in_group_status: 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 Nagios. Nothing to install.
get_hosts_in_group_status 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_hosts_in_group_status 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_hosts_in_group_status. 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_hosts_in_group_status is provided by the Nagios MCP server (prospire-technology-services/nagios-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Nagios, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
17 Nagios tools catalogued and risk-classified — across an index of 43,000+ MCP servers.