storage_create_bucket · Google Cloud MCP: Risk & Policy

WHAT IT DOES

What storage_create_bucket does on Google Cloud

AI agents use storage_create_bucket to create or update resources in Google Cloud — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Google Cloud environment.

WHY IT NEEDS A POLICY

Why storage_create_bucket needs a policy

This tool creates a new Google Cloud Storage bucket, which is a reversible write operation. While bucket creation can incur costs and consume quota, the operation itself is not destructive (buckets can be deleted) and does not directly move money.

From the tool's definition Tool name 'storage_create_bucket' and description 'Create a new Cloud Storage bucket' indicate creation of a new cloud resource.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

storage_create_bucket Rate-limited

storage_create_bucket stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "storage_create_bucket": {
      "limits": [
        {
          "counter": "storage_create_bucket_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Google Cloud, so you can run agents against it safely.

FAQ

Questions about storage_create_bucket

What does the storage_create_bucket tool do? +

Create a new Cloud Storage bucket. It is categorised as a Write tool in the Google Cloud MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on storage_create_bucket? +

Register the Google Cloud MCP server in PolicyLayer and add a rule for storage_create_bucket: 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. Nothing to install.

What risk level is storage_create_bucket? +

storage_create_bucket is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit storage_create_bucket? +

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

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

storage_create_bucket is provided by the Google Cloud MCP server (lockon-n/google-cloud-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

// THE FULL RECORD

storage_create_bucket is one line of Google Cloud's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

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