# createOneCalendarChannel

A write tool on the Twenty MCP Server MCP server.

Agent View of the PolicyLayer registry record for `createOneCalendarChannel`. HTML page: https://policylayer.com/tools/jdu278-twenty-mcp-server/createonecalendarchannel

## Facts

- Tool: `createOneCalendarChannel`
- Server: Twenty MCP Server (`jdu278/twenty-mcp-server`) — https://policylayer.com/tools/jdu278-twenty-mcp-server.md
- Homepage: https://github.com/Jdu278/twenty-mcp-server
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "createOneCalendarChannel",
    "arguments": {}
  }
}
```

## Why createOneCalendarChannel is rated Medium

This tool creates a new calendar channel resource in the Twenty CRM system. Creation is a reversible Write operation—the channel can be deleted or modified later. The severity is medium because improper calendar channel creation could disrupt CRM workflows or cause unwanted communication channels, but the impact is limited to a single CRM resource rather than system-wide or financial consequences.

From the tool's own definition: "Tool name 'createOneCalendarChannel' with description 'Create One calendarChannel' indicates data creation operation. The 'createMany*' sibling tools and the 'create' prefix across the server confirm this is a Write category action."

## Use case

AI agents use createOneCalendarChannel 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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Twenty MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "createOneCalendarChannel": {
      "limits": [
        {
          "counter": "createonecalendarchannel_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Twenty MCP Server (218)

- `deleteOneAttachment` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteoneattachment.md
- `deleteOneBlocklist` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteoneblocklist.md
- `deleteOneCalendarChannel` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonecalendarchannel.md
- `deleteOneCalendarChannelEventAssociation` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonecalendarchanneleventassociation.md
- `deleteOneCalendarEvent` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonecalendarevent.md
- `deleteOneCalendarEventParticipant` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonecalendareventparticipant.md
- `deleteOneCompany` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonecompany.md
- `deleteOneConnectedAccount` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteoneconnectedaccount.md
- `deleteOneFavorite` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonefavorite.md
- `deleteOneFavoriteFolder` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonefavoritefolder.md
- `deleteOneMessage` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonemessage.md
- `deleteOneMessageChannel` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonemessagechannel.md
- `deleteOneMessageChannelMessageAssociation` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonemessagechannelmessageassociation.md
- `deleteOneMessageFolder` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonemessagefolder.md
- `deleteOneMessageParticipant` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonemessageparticipant.md
- `deleteOneMessageThread` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonemessagethread.md
- `deleteOneNote` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonenote.md
- `deleteOneNoteTarget` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonenotetarget.md
- `deleteOneOpportunity` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteoneopportunity.md
- `deleteOnePerson` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteoneperson.md
- `deleteOneTask` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonetask.md
- `deleteOneTaskTarget` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonetasktarget.md
- `deleteOneTimelineActivity` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteonetimelineactivity.md
- `deleteOneView` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteoneview.md
- `deleteOneViewField` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteoneviewfield.md
- `deleteOneViewFilter` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteoneviewfilter.md
- `deleteOneWorkflow` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteoneworkflow.md
- `deleteOneWorkflowAutomatedTrigger` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteoneworkflowautomatedtrigger.md
- `deleteOneWorkflowRun` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteoneworkflowrun.md
- `deleteOneWorkflowVersion` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteoneworkflowversion.md
- …and 188 more: https://policylayer.com/tools/jdu278-twenty-mcp-server.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=jdu278-twenty-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/jdu278-twenty-mcp-server