Retrieves the information for the downtimes in the Nagios Host Process
AI agents call get_downtimes 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 existing downtime data from Nagios monitoring system without creating, modifying, deleting, or executing any operations. It is purely informational in nature. The blast radius of misuse is minimal—an AI agent querying downtimes cannot cause harm beyond potentially revealing monitoring schedule information.
From the tool's definition Tool name 'get_downtimes' and description 'Retrieves the information for the downtimes' indicate a query/fetch operation with no modification or execution capability.
Documented attack patterns abuse exactly the kind of access get_downtimes 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_downtimes:
{
"version": "1",
"default": "deny",
"tools": {
"get_downtimes": {}
}
}get_downtimes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Retrieves the information for the downtimes in the Nagios Host Process. 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_downtimes: 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_downtimes 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_downtimes 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_downtimes. 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_downtimes 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.
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17 Nagios tools catalogued and risk-classified — across an index of 43,000+ MCP servers.