stop

Stop a running instance.

SERVERVultr MCP SOURCErsp2k/mcp-vultr

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/rsp2k-mcp-vultr/stop.md

WHAT IT DOES

What stop does on Vultr MCP

AI agents invoke stop to trigger actions in Vultr MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why stop is rated High

Stopping an instance is an executable operation that triggers an external action on cloud infrastructure. While not destructive (the instance is not deleted), it is disruptive and changes the operational state of a system. This is Execute rather than Write because it invokes an action on infrastructure whose effects (service downtime, workflow interruption) depend on which instance is targeted.

From the tool's definition Tool name: 'stop'; description: 'Stop a running instance.' Stops a computational instance, which is an operational action that changes the state of infrastructure.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs stop safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Vultr MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For stop, this is the rule to start with:

stop Rate-limited

stop stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "stop": {
      "limits": [
        {
          "counter": "stop_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Vultr MCP, apply this rule, and every stop call is checked against it from then on.

FAQ

Questions about stop

What does the stop tool do? +

Stop a running instance. It is categorised as a Execute tool in the Vultr MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on stop? +

Register the Vultr MCP server in PolicyLayer and add a rule for stop: 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 Vultr MCP. Nothing to install.

What risk level is stop? +

stop is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit stop? +

Yes. Add a rate_limit block to the stop 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 stop completely? +

Set action: deny in the PolicyLayer policy for stop. 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 stop? +

stop is provided by the Vultr MCP server (rsp2k/mcp-vultr). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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