create-prompt

THE RISK

Medium Risk

Why create-prompt needs a policy

This tool creates new prompt files, which is a reversible Write operation. Severity is medium because: (1) it modifies the local file system, (2) unauthorized prompt creation could poison a prompt library or introduce malicious templates, (3) however, the impact is limited to local files and reversible via deletion, unlike destructive or financial operations. Confidence is high because the operation is unambiguous.

From the tool's definition Tool name 'create-prompt' and description 'Create a new prompt file' indicate creation of new data in the local file system. The sibling tools include 'delete-prompt' and 'export-prompts', confirming this server manages persistent prompt files.

Documented attack patterns abuse exactly the kind of access create-prompt gives an agent:

POLICY

How to control create-prompt

PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Prompt Manager, and nothing reaches the server without passing your rules. This is the rule we recommend for create-prompt:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create-prompt": {
      "limits": [
        {
          "counter": "create-prompt_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

create-prompt 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 MCP Prompt Manager — 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 MCP Prompt Manager tools

Destructive delete-prompt Delete a prompt file Execute process-template Process a prompt template with advanced logic Write favorite-prompt Add or remove a prompt from favorites Write rollback-prompt Rollback a prompt to a specific version Write categorize-prompt Set category for a prompt Write create-prompt-from-template Create a new prompt file from a template with variables Write export-prompts Export prompts to JSON format for backup or sharing Write import-prompts Import prompts from JSON format

All 33 MCP Prompt Manager tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

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 create-prompt

What does the create-prompt tool do? +

Create a new prompt file. It is categorised as a Write tool in the MCP Prompt Manager MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create-prompt? +

Register the MCP Prompt Manager MCP server in PolicyLayer and add a rule for create-prompt: 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 MCP Prompt Manager. Nothing to install.

What risk level is create-prompt? +

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

Can I rate-limit create-prompt? +

Yes. Add a rate_limit block to the create-prompt 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 create-prompt completely? +

Set action: deny in the PolicyLayer policy for create-prompt. 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 create-prompt? +

create-prompt is provided by the MCP Prompt Manager MCP server (tae4an/mcp-prompt-manager). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP Prompt Manager tool call.

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

CHECK YOUR STACK →