AI agents use create_note to create or update resources in Twenty CRM MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Twenty CRM MCP Server environment.
This tool creates a new note record in Twenty CRM, modifying the database in a reversible way. It does not retrieve (Read), delete (Destructive), execute arbitrary operations (Execute), or involve money (Financial). The medium severity reflects that an AI agent could spam notes or create misleading records, but the impact is bounded and reversible (notes can be deleted via delete_note).
From the tool's definition Tool name and description explicitly state 'Create a new note' — a create operation that writes data to the CRM system.
Documented attack patterns abuse exactly the kind of access create_note gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Twenty CRM MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for create_note:
{
"version": "1",
"default": "deny",
"tools": {
"create_note": {
"limits": [
{
"counter": "create_note_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_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.
Free to start. No card required.
Create a new note in Twenty CRM. It is categorised as a Write tool in the Twenty CRM MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Twenty CRM MCP Server MCP server in PolicyLayer and add a rule for create_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 Twenty CRM MCP Server. Nothing to install.
create_note is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_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.
Set action: deny in the PolicyLayer policy for create_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.
create_note is provided by the Twenty CRM MCP Server MCP server (mhenry3164/twenty-crm-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Twenty CRM MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
23 Twenty CRM MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.