add_multi_message_prompt · Promptopia MCP: Risk & Policy

WHAT IT DOES

What add_multi_message_prompt does on Promptopia MCP

AI agents use add_multi_message_prompt to create or update resources in Promptopia MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Promptopia MCP environment.

WHY IT NEEDS A POLICY

Why add_multi_message_prompt needs a policy

This tool creates new prompt data in Promptopia's system. While it modifies state, the operation is reversible (as evidenced by the presence of delete_prompt and update_prompt on the sibling tools), so it falls under Write rather than Destructive.

From the tool's definition Tool name 'add_multi_message_prompt' and description 'Adds a new multi-message prompt' indicate a create operation that stores data reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_multi_message_prompt Rate-limited

add_multi_message_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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "add_multi_message_prompt": {
      "limits": [
        {
          "counter": "add_multi_message_prompt_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Promptopia MCP, so you can run agents against it safely.

FAQ

Questions about add_multi_message_prompt

What does the add_multi_message_prompt tool do? +

Adds a new multi-message prompt with role-based messages. It is categorised as a Write tool in the Promptopia MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_multi_message_prompt? +

Register the Promptopia MCP server in PolicyLayer and add a rule for add_multi_message_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 Promptopia MCP. Nothing to install.

What risk level is add_multi_message_prompt? +

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

Can I rate-limit add_multi_message_prompt? +

Yes. Add a rate_limit block to the add_multi_message_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 add_multi_message_prompt completely? +

Set action: deny in the PolicyLayer policy for add_multi_message_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 add_multi_message_prompt? +

add_multi_message_prompt is provided by the Promptopia MCP server (lumile/promptopia-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.