add_private_note · Service Desk Plus MCP Server MCP

WHAT IT DOES

What add_private_note does on Service Desk Plus MCP Server

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

WHY IT NEEDS A POLICY

Why add_private_note needs a policy

This tool creates new data (a private note) within a request record. While notes are generally low-impact, they can contain sensitive information, internal comments, or instructions that affect how a request is handled. The ability to add notes to requests without requester visibility means an AI agent could inject misleading information into internal workflows or escalate/influence request handling inappropriately.

From the tool's definition Tool description states 'Add a private note to a request', which is a create/modify operation that adds data to an existing service desk request. The word 'Add' indicates a reversible write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_private_note Rate-limited

add_private_note 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_private_note": {
      "limits": [
        {
          "counter": "add_private_note_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about add_private_note

What does the add_private_note tool do? +

Add a private note to a request (not visible to requester). It is categorised as a Write tool in the Service Desk Plus MCP Server 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_private_note? +

Register the Service Desk Plus MCP Server MCP server in PolicyLayer and add a rule for add_private_note: 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 Service Desk Plus MCP Server. Nothing to install.

What risk level is add_private_note? +

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

Can I rate-limit add_private_note? +

Yes. Add a rate_limit block to the add_private_note 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_private_note completely? +

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

add_private_note is provided by the Service Desk Plus MCP Server MCP server (pttg-it/sdp-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.