createOneMessage

A write tool on the Twenty MCP server.

SERVERTwenty MCP Server SOURCEjdu278/twenty-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/jdu278-twenty-mcp-server/createonemessage.md

WHAT IT DOES

What createOneMessage does on Twenty MCP Server

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

RISK

Why createOneMessage is rated Medium

This tool creates a new message record in the CRM system, which is a reversible data modification operation. While message creation could potentially be misused to spam or send unwanted communications, it does not delete data (Destructive), execute arbitrary code (Execute), move money (Financial), or have the blast radius of those categories.

From the tool's definition Tool name 'createOneMessage' and description 'Create One message' indicate creation of new data. The 'createOne' pattern across sibling tools (createOneMessage, createManyAttachments, createManyCompanies, etc.) consistently denotes Write operations in Twenty…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs createOneMessage safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Twenty MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For createOneMessage, this is the rule to start with:

createOneMessage Rate-limited

createOneMessage 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": {
    "createOneMessage": {
      "limits": [
        {
          "counter": "createonemessage_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Twenty MCP Server, apply this rule, and every createOneMessage call is checked against it from then on.

FAQ

Questions about createOneMessage

What does the createOneMessage tool do? +

createOneMessage is a write tool on the Twenty MCP Server MCP server. It is categorised as a Write tool in the Twenty 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 createOneMessage? +

Register the Twenty MCP Server MCP server in PolicyLayer and add a rule for createOneMessage: 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 MCP Server. Nothing to install.

What risk level is createOneMessage? +

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

Can I rate-limit createOneMessage? +

Yes. Add a rate_limit block to the createOneMessage 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 createOneMessage completely? +

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

createOneMessage is provided by the Twenty MCP Server MCP server (jdu278/twenty-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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