list_identities

THE RISK

Low Risk

Why list_identities needs a policy

This tool performs a read-only query to retrieve identity information from a Kubernetes cluster. It returns data without side effects, reversible changes, or irreversible operations. The blast radius is limited since listing identities is informational only and does not execute code, modify data, or affect system state. Low severity is appropriate as this is passive reconnaissance of cluster metadata.

From the tool's definition Tool name 'list_identities' and description 'Get list of identities for a specific Kubernetes cluster' indicate a query operation that retrieves identity information without modification or execution.

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

POLICY

How to control list_identities

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_identities": {}
  }
}

list_identities 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 RAD Security — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

Related tools and policies

More RAD Security tools

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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 list_identities

What does the list_identities tool do? +

Get list of identities for a specific Kubernetes cluster. It is categorised as a Read tool in the RAD Security MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_identities? +

Register the RAD Security MCP server in PolicyLayer and add a rule for list_identities: 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 RAD Security. Nothing to install.

What risk level is list_identities? +

list_identities is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_identities? +

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

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

list_identities is provided by the RAD Security MCP server (rad-security/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 RAD Security tool call.

Start from RAD Security, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →