release_host_reservation · CloudStack MCP Server MCP

WHAT IT DOES

What release_host_reservation does on CloudStack MCP Server

AI agents use release_host_reservation to create or update resources in CloudStack MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your CloudStack MCP Server environment.

WHY IT NEEDS A POLICY

Why release_host_reservation needs a policy

This tool modifies infrastructure by releasing a previously made host reservation, which is a reversible Write operation. It does not permanently delete resources (would be Destructive) but rather undoes a reservation—similar to canceling or releasing an allocation. The blast radius is moderate as it could affect resource availability and scheduling if misused, but the operation is reversible.

From the tool's definition Tool name is 'release_host_reservation' which modifies infrastructure state by releasing a reservation. Description states 'Release host reservation' indicating a state change operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

release_host_reservation Rate-limited

release_host_reservation stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "release_host_reservation": {
      "limits": [
        {
          "counter": "release_host_reservation_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches CloudStack MCP Server, so you can run agents against it safely.

FAQ

Questions about release_host_reservation

What does the release_host_reservation tool do? +

Release host reservation. It is categorised as a Write tool in the CloudStack MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on release_host_reservation? +

Register the CloudStack MCP Server MCP server in PolicyLayer and add a rule for release_host_reservation: 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 CloudStack MCP Server. Nothing to install.

What risk level is release_host_reservation? +

release_host_reservation is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit release_host_reservation? +

Yes. Add a rate_limit block to the release_host_reservation 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.

How do I block release_host_reservation completely? +

Set action: deny in the PolicyLayer policy for release_host_reservation. 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.

What MCP server provides release_host_reservation? +

release_host_reservation is provided by the CloudStack MCP Server MCP server (mozg31337/cloudstack-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.