# deleteOneMessageChannel

A destructive tool on the Twenty MCP Server MCP server.

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

## Facts

- Tool: `deleteOneMessageChannel`
- 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: Destructive (Critical risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Hidden

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

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

## Why deleteOneMessageChannel is rated Critical

This tool permanently removes a messageChannel entity without possibility of reversal. Destructive operations are more severe than Write operations. In a CRM context, deletion of communication channels could result in loss of message history and relationships, warranting high severity. The confidence is high due to explicit 'delete' language in both name and description.

From the tool's own definition: "Tool name explicitly uses 'deleteOne' and description states 'Delete One messageChannel' - indicates irreversible deletion of a data entity."

## Use case

AI agents call deleteOneMessageChannel to permanently remove resources in Twenty MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "deleteOneMessageChannel"
  ]
}
```

## 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
- `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
- `deleteOneWorkspaceMember` — Destructive — https://policylayer.com/tools/jdu278-twenty-mcp-server/deleteoneworkspacemember.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