list_instance_volumes

THE RISK

Low Risk

Why list_instance_volumes needs a policy

This tool performs a simple data retrieval operation—listing volumes attached to an instance. It has no side effects, does not modify infrastructure, and poses minimal risk if misused by an AI agent, as it only exposes information about existing resources.

From the tool's definition Tool name 'list_instance_volumes' and description 'List volumes attached to a Linode instance' indicate a read-only operation that retrieves information about volumes without modifying, deleting, or executing any actions.

Documented attack patterns abuse exactly the kind of access list_instance_volumes gives an agent:

POLICY

How to control list_instance_volumes

PolicyLayer is an MCP gateway — it sits between your AI agents and Linode MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_instance_volumes:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_instance_volumes": {}
  }
}

list_instance_volumes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Linode MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 416 Linode MCP Server tools →

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about list_instance_volumes

What does the list_instance_volumes tool do? +

List volumes attached to a Linode instance. It is categorised as a Read tool in the Linode MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_instance_volumes? +

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

What risk level is list_instance_volumes? +

list_instance_volumes is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_instance_volumes? +

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

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

list_instance_volumes is provided by the Linode MCP Server MCP server (takashito/linode-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Linode MCP Server tool call.

Start from Linode MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →