gcp-billing-list-services

THE RISK

Low Risk

Why gcp-billing-list-services needs a policy

This tool performs a simple enumeration/listing operation with no side effects. It returns reference data (available services) for informational purposes, which is characteristic of Read category tools. The blast radius is minimal—an agent cannot misuse this to cause harm, spend money, or trigger unintended changes. Low severity reflects the informational-only nature of the output.

From the tool's definition Tool name 'gcp-billing-list-services' and description 'List all available Google Cloud services for billing and cost analysis' indicate a read-only query operation that retrieves a list of services without modifying, deleting, or executing operations.

Documented attack patterns abuse exactly the kind of access gcp-billing-list-services gives an agent:

POLICY

How to control gcp-billing-list-services

PolicyLayer is an MCP gateway — it sits between your AI agents and Google Cloud MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for gcp-billing-list-services:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "gcp-billing-list-services": {}
  }
}

gcp-billing-list-services 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 Google Cloud 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 →

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EXPLORE

Related tools and policies

More Google Cloud MCP Server tools

Execute gcp-spanner-execute-query gcp-spanner-execute-query Execute gcp-spanner-query-count gcp-spanner-query-count Execute gcp-spanner-query-natural-language gcp-spanner-query-natural-language Write gcp-utils-set-project-id Set the default Google Cloud project ID to use for all operations Read gcp-billing-analyse-costs Perform detailed cost analysis with trends and insights for Google Cloud billing data Read gcp-billing-cost-recommendations Generate cost optimisation recommendations with potential savings for Google Cloud billing Read gcp-billing-detect-anomalies Detect unusual cost patterns and spending anomalies in Google Cloud billing data Read gcp-billing-get-account-details Retrieve detailed information about a specific Google Cloud billing account

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Read tools on other servers

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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 gcp-billing-list-services

What does the gcp-billing-list-services tool do? +

List all available Google Cloud services for billing and cost analysis. It is categorised as a Read tool in the Google Cloud MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on gcp-billing-list-services? +

Register the Google Cloud MCP Server MCP server in PolicyLayer and add a rule for gcp-billing-list-services: 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 Google Cloud MCP Server. Nothing to install.

What risk level is gcp-billing-list-services? +

gcp-billing-list-services is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit gcp-billing-list-services? +

Yes. Add a rate_limit block to the gcp-billing-list-services 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-billing-list-services completely? +

Set action: deny in the PolicyLayer policy for gcp-billing-list-services. 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-billing-list-services? +

gcp-billing-list-services is provided by the Google Cloud MCP Server MCP server (krzko/google-cloud-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Google Cloud MCP Server tool call.

Start from Google Cloud 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 →