gcp_compute_list_machine_types

List available machine types in a zone

SERVERGCP MCP Server SOURCEahmedselimmansor-ctrl/gcp_mcp_server

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/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-compute-list-machine-types.md

WHAT IT DOES

What gcp_compute_list_machine_types does on GCP MCP Server

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

RISK

Why gcp_compute_list_machine_types is rated Low

This tool retrieves and enumerates machine type configurations available in a GCP zone. It performs no modifications, deletions, or code execution. The blast radius of misuse is minimal—an attacker gains only informational metadata about available instance types, which is typically non-sensitive infrastructure documentation.

From the tool's definition Tool name contains 'list' and description states 'List available machine types in a zone' — a read-only query operation that retrieves metadata about available resources with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs gcp_compute_list_machine_types safely

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

gcp_compute_list_machine_types Allowed

gcp_compute_list_machine_types 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": {
    "gcp_compute_list_machine_types": {}
  }
}

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

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

FAQ

Questions about gcp_compute_list_machine_types

What does the gcp_compute_list_machine_types tool do? +

List available machine types in a zone. It is categorised as a Read tool in the GCP MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on gcp_compute_list_machine_types? +

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

What risk level is gcp_compute_list_machine_types? +

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

Can I rate-limit gcp_compute_list_machine_types? +

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

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

gcp_compute_list_machine_types is provided by the GCP MCP Server MCP server (ahmedselimmansor-ctrl/gcp_mcp_server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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