template_list

THE RISK

Low Risk

Why template_list needs a policy

This tool retrieves information about available templates without creating, modifying, deleting, or executing any operations. It is a straightforward read operation that returns metadata about templates, posing minimal risk if misused by an AI agent.

From the tool's definition Tool name 'template_list' and description 'List available templates from the library' indicate a query/retrieval operation with no side effects or data modification.

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

POLICY

How to control template_list

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

policy.json

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

template_list 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 Engineering 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

Related tools and policies

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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 template_list

What does the template_list tool do? +

List available templates from the library. It is categorised as a Read tool in the Engineering MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on template_list? +

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

What risk level is template_list? +

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

Can I rate-limit template_list? +

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

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

template_list is provided by the Engineering MCP Server MCP server (puran-water/dexpi-sfiles-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 Engineering MCP Server tool call.

Start from Engineering 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 →