List all unattached block storage volumes.
AI agents call list_unattached to retrieve information from Vultr MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only operation that retrieves information about unattached block storage volumes. It has no side effects, does not execute operations, and does not modify, delete, or create resources. The blast radius of misuse is minimal—an agent could only enumerate existing storage state, which is low-risk reconnaissance activity.
From the tool's definition Tool name 'list_unattached' and description 'List all unattached block storage volumes' indicate a retrieval/query operation with no modification of data or infrastructure.
Documented attack patterns abuse exactly the kind of access list_unattached gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Vultr MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for list_unattached:
{
"version": "1",
"default": "deny",
"tools": {
"list_unattached": {}
}
}list_unattached is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all unattached block storage volumes. It is categorised as a Read tool in the Vultr MCP MCP Server, which means it retrieves data without modifying state.
Register the Vultr MCP server in PolicyLayer and add a rule for list_unattached: 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.
list_unattached 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_unattached 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_unattached. 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_unattached 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.
Start from Vultr MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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284 Vultr MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.