add_image_store_s3 · CloudStack MCP Server MCP

WHAT IT DOES

What add_image_store_s3 does on CloudStack MCP Server

AI agents use add_image_store_s3 to create or update resources in CloudStack MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your CloudStack MCP Server environment.

WHY IT NEEDS A POLICY

Why add_image_store_s3 needs a policy

This tool creates a new S3 backend configuration in CloudStack, modifying the cloud infrastructure's storage layer. While it does not delete data (Destructive) or execute arbitrary code (Execute), it permanently alters infrastructure configuration.

From the tool's definition Tool name 'add_image_store_s3' and description 'Add Amazon S3 as image store backend' indicate creation/modification of infrastructure configuration. The verb 'add' combined with 'image_store' shows this creates or registers a new storage backend resource.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_image_store_s3 Rate-limited

add_image_store_s3 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": {
    "add_image_store_s3": {
      "limits": [
        {
          "counter": "add_image_store_s3_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about add_image_store_s3

What does the add_image_store_s3 tool do? +

Add Amazon S3 as image store backend. It is categorised as a Write tool in the CloudStack MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_image_store_s3? +

Register the CloudStack MCP Server MCP server in PolicyLayer and add a rule for add_image_store_s3: 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 CloudStack MCP Server. Nothing to install.

What risk level is add_image_store_s3? +

add_image_store_s3 is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit add_image_store_s3? +

Yes. Add a rate_limit block to the add_image_store_s3 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 add_image_store_s3 completely? +

Set action: deny in the PolicyLayer policy for add_image_store_s3. 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 add_image_store_s3? +

add_image_store_s3 is provided by the CloudStack MCP Server MCP server (mozg31337/cloudstack-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.