list_web_services

THE RISK

Low Risk

Why list_web_services needs a policy

This tool retrieves and queries existing web service configurations in a survey without creating, modifying, deleting, or executing any operations. It is a passive read-only action with minimal security impact, making it a low-severity Read category tool.

From the tool's definition Tool name 'list_web_services' and description 'List all Web Service elements' indicate a retrieval operation with no modification of data.

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

POLICY

How to control list_web_services

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

policy.json

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

list_web_services 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 Qualtrics 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 →

Free to start. No card required.

EXPLORE

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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_web_services

What does the list_web_services tool do? +

List all Web Service elements currently defined in a survey. It is categorised as a Read tool in the Qualtrics MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_web_services? +

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

What risk level is list_web_services? +

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

Can I rate-limit list_web_services? +

Yes. Add a rate_limit block to the list_web_services 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_web_services completely? +

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

list_web_services is provided by the Qualtrics MCP Server MCP server (yrvelez/qualtrics-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 Qualtrics MCP Server tool call.

Start from Qualtrics 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 →