get_user_by_user_id

THE RISK

Low Risk

Why get_user_by_user_id needs a policy

This tool retrieves existing user profile data without modifying, deleting, or executing actions. It is a straightforward read operation that queries data from the Iterable platform. No destructive, financial, or executable operations are performed.

From the tool's definition Tool name 'get_user_by_user_id' and description 'Get user profile information by user ID' clearly indicate a retrieval operation with no side effects.

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

POLICY

How to control get_user_by_user_id

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

policy.json

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

get_user_by_user_id 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 Iterable 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

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All 78 Iterable MCP Server tools →

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 get_user_by_user_id

What does the get_user_by_user_id tool do? +

Get user profile information by user ID. It is categorised as a Read tool in the Iterable MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_user_by_user_id? +

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

What risk level is get_user_by_user_id? +

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

Can I rate-limit get_user_by_user_id? +

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

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

get_user_by_user_id is provided by the Iterable MCP Server MCP server (iterable/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 Iterable MCP Server tool call.

Start from Iterable 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 →