add_sharegroup_images

THE RISK

Medium Risk

Why add_sharegroup_images needs a policy

This tool creates or modifies a share group by adding images to it. While it changes state in Linode's system, the operation is reversible (images can be removed from share groups). It affects only the targeted share group and does not delete data or execute arbitrary code. The blast radius is limited to the specific share group being modified, making it Write rather than Execute or Destructive.

From the tool's definition Tool name 'add_sharegroup_images' and description 'Add images to a share group' indicate a create/modify operation that adds resources to an existing group.

Documented attack patterns abuse exactly the kind of access add_sharegroup_images gives an agent:

POLICY

How to control add_sharegroup_images

PolicyLayer is an MCP gateway — it sits between your AI agents and Linode MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for add_sharegroup_images:

policy.json

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

add_sharegroup_images 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.

Create a free account and register Linode 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.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Linode MCP Server tools

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All 416 Linode MCP Server tools →

Write 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.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about add_sharegroup_images

What does the add_sharegroup_images tool do? +

Add images to a share group. It is categorised as a Write tool in the Linode 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_sharegroup_images? +

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

What risk level is add_sharegroup_images? +

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

Can I rate-limit add_sharegroup_images? +

Yes. Add a rate_limit block to the add_sharegroup_images 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_sharegroup_images completely? +

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

add_sharegroup_images is provided by the Linode MCP Server MCP server (takashito/linode-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Linode MCP Server tool call.

Start from Linode 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 →