add_note

THE RISK

Medium Risk

Why add_note needs a policy

This tool creates new note records reversibly without deleting or modifying existing data, and does not execute code or move money. While it modifies CRM state, the operation is non-destructive and can be undone by deleting the note.

From the tool's definition Tool name 'add_note' and description 'Adicionar uma nota de texto a lead, contato ou empresa' (Add a text note to lead, contact or company) indicate creation of new note data attached to existing CRM entities.

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

POLICY

How to control add_note

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

policy.json

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

add_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.

Create a free account and register Kommo CRM 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.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Kommo CRM MCP Server tools

Execute run_salesbot Iniciar um Salesbot (API v4). Requer entity_id e entity_type (ex.: leads). Execute stop_salesbot Parar um Salesbot pelo ID do bot Write unpin_note Desafixar uma nota no cartão da entidade Write create_lead Criar um novo lead no Kommo CRM Write create_task Criar uma nova tarefa vinculada a lead, contato ou empresa Write move_lead Mover lead para outro status ou pipeline Write pin_note Fixar uma nota no cartão da entidade (lead, contato ou empresa) Write update_lead Atualizar um lead existente (nome, valor, status, pipeline, etc.)

All 23 Kommo CRM MCP Server 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 add_note

What does the add_note tool do? +

Adicionar uma nota de texto a lead, contato ou empresa. It is categorised as a Write tool in the Kommo CRM 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_note? +

Register the Kommo CRM MCP Server MCP server in PolicyLayer and add a rule for add_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 Kommo CRM MCP Server. Nothing to install.

What risk level is add_note? +

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

Can I rate-limit add_note? +

Yes. Add a rate_limit block to the add_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_note completely? +

Set action: deny in the PolicyLayer policy for add_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_note? +

add_note is provided by the Kommo CRM MCP Server MCP server (miguelgbastos/kommo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Kommo CRM MCP Server tool call.

Start from Kommo CRM 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 →