gcp_compute_list_zones
List all available zones
This record as markdown: /tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-compute-list-zones.md
What gcp_compute_list_zones does on GCP MCP Server
AI agents call gcp_compute_list_zones 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.
Why gcp_compute_list_zones is rated Low
This tool retrieves metadata about GCP zones without modifying, deleting, or executing any operations. It is informational only, making it a Read category tool with low severity since zone information is not sensitive and listing zones has no blast radius.
From the tool's definition Tool name is 'list_zones' with description 'List all available zones' — a pure query operation with no side effects.
Attacks that exploit this kind of access
The rule that runs gcp_compute_list_zones 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_zones, this is the rule to start with:
gcp_compute_list_zones is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect GCP MCP Server, apply this rule, and every gcp_compute_list_zones call is checked against it from then on.
Questions about gcp_compute_list_zones
List all available zones. It is categorised as a Read tool in the GCP MCP Server MCP Server, which means it retrieves data without modifying state.
Register the GCP MCP Server MCP server in PolicyLayer and add a rule for gcp_compute_list_zones: 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.
gcp_compute_list_zones 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 gcp_compute_list_zones 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 gcp_compute_list_zones. 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.
gcp_compute_list_zones 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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