list_isos

List all available ISO images.

SERVERVultr MCP SOURCErsp2k/mcp-vultr

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

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

WHAT IT DOES

What list_isos does on Vultr MCP

AI agents call list_isos to retrieve information from Vultr MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_isos is rated Low

This tool queries and returns a list of ISO images from the Vultr infrastructure without creating, modifying, deleting, or executing anything. It is a straightforward read operation with minimal blast radius—unauthorized listing of available ISOs poses no immediate risk to infrastructure or data integrity.

From the tool's definition Tool name 'list_isos' and description 'List all available ISO images' indicate a retrieval operation with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_isos 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 list_isos, this is the rule to start with:

list_isos Allowed

list_isos is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about list_isos

What does the list_isos tool do? +

List all available ISO images. It is categorised as a Read tool in the Vultr MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_isos? +

Register the Vultr MCP server in PolicyLayer and add a rule for list_isos: 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 list_isos? +

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

Can I rate-limit list_isos? +

Yes. Add a rate_limit block to the list_isos 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_isos completely? +

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

list_isos 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.

KEEP EXPLORING

More on Vultr, and thousands of servers like it.

This server

All 284 Vultr tools →

Across the catalogue

aiva_list_affiliates on AIVA MCP Server →list_circuits on 0gzk →list_agents on 0rca Dojo MCP Server → The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →