# delete-data-type

Deletes a data type by Id

Agent View of the PolicyLayer registry record for `delete-data-type`. HTML page: https://policylayer.com/tools/mcp-dev/delete-data-type

## Facts

- Tool: `delete-data-type`
- Server: Mcp Dev (`@umbraco-cms/mcp-dev`) — https://policylayer.com/tools/mcp-dev.md
- Install: `npx -y @umbraco-cms/mcp-dev`
- Homepage: git+https://github.com/umbraco/Umbraco-CMS-MCP-Dev.git
- 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": "delete-data-type",
    "arguments": {}
  }
}
```

## Why delete-data-type is rated Critical

This tool permanently removes a data type from the Umbraco CMS, which is an irreversible operation. Data types are foundational configuration objects in Umbraco that likely affect multiple documents and content structures. Deletion cannot be undone and impacts dependent content, making this a Destructive action rather than mere Write.

From the tool's own definition: "Tool name: 'delete-data-type'; description: 'Deletes a data type by Id'. The verb 'deletes' indicates irreversible removal of data."

## Use case

AI agents call delete-data-type to permanently remove resources in Mcp Dev, 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 Mcp Dev:

```json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete-data-type"
  ]
}
```

## Other tools on Mcp Dev (418)

- `create-document-version-rollback` — Destructive — https://policylayer.com/tools/mcp-dev/create-document-version-rollback.md
- `delete-data-type-folder` — Destructive — https://policylayer.com/tools/mcp-dev/delete-data-type-folder.md
- `delete-dictionary-item` — Destructive — https://policylayer.com/tools/mcp-dev/delete-dictionary-item.md
- `delete-document` — Destructive — https://policylayer.com/tools/mcp-dev/delete-document.md
- `delete-document-blueprint` — Destructive — https://policylayer.com/tools/mcp-dev/delete-document-blueprint.md
- `delete-document-blueprint-folder` — Destructive — https://policylayer.com/tools/mcp-dev/delete-document-blueprint-folder.md
- `delete-document-public-access` — Destructive — https://policylayer.com/tools/mcp-dev/delete-document-public-access.md
- `delete-document-recycle-bin-item` — Destructive — https://policylayer.com/tools/mcp-dev/delete-document-recycle-bin-item.md
- `delete-document-type` — Destructive — https://policylayer.com/tools/mcp-dev/delete-document-type.md
- `delete-document-type-folder` — Destructive — https://policylayer.com/tools/mcp-dev/delete-document-type-folder.md
- `delete-element` — Destructive — https://policylayer.com/tools/mcp-dev/delete-element.md
- `delete-element-folder` — Destructive — https://policylayer.com/tools/mcp-dev/delete-element-folder.md
- `delete-element-folder-from-recycle-bin` — Destructive — https://policylayer.com/tools/mcp-dev/delete-element-folder-from-recycle-bin.md
- `delete-element-from-recycle-bin` — Destructive — https://policylayer.com/tools/mcp-dev/delete-element-from-recycle-bin.md
- `delete-from-recycle-bin` — Destructive — https://policylayer.com/tools/mcp-dev/delete-from-recycle-bin.md
- `delete-language` — Destructive — https://policylayer.com/tools/mcp-dev/delete-language.md
- `delete-log-viewer-saved-search-by-name` — Destructive — https://policylayer.com/tools/mcp-dev/delete-log-viewer-saved-search-by-name.md
- `delete-media` — Destructive — https://policylayer.com/tools/mcp-dev/delete-media.md
- `delete-media-from-recycle-bin` — Destructive — https://policylayer.com/tools/mcp-dev/delete-media-from-recycle-bin.md
- `delete-media-recycle-bin-item` — Destructive — https://policylayer.com/tools/mcp-dev/delete-media-recycle-bin-item.md
- `delete-media-type` — Destructive — https://policylayer.com/tools/mcp-dev/delete-media-type.md
- `delete-media-type-folder` — Destructive — https://policylayer.com/tools/mcp-dev/delete-media-type-folder.md
- `delete-member` — Destructive — https://policylayer.com/tools/mcp-dev/delete-member.md
- `delete-member-group` — Destructive — https://policylayer.com/tools/mcp-dev/delete-member-group.md
- `delete-member-type` — Destructive — https://policylayer.com/tools/mcp-dev/delete-member-type.md
- `delete-partial-view` — Destructive — https://policylayer.com/tools/mcp-dev/delete-partial-view.md
- `delete-partial-view-folder` — Destructive — https://policylayer.com/tools/mcp-dev/delete-partial-view-folder.md
- `delete-redirect` — Destructive — https://policylayer.com/tools/mcp-dev/delete-redirect.md
- `delete-script` — Destructive — https://policylayer.com/tools/mcp-dev/delete-script.md
- `delete-script-folder` — Destructive — https://policylayer.com/tools/mcp-dev/delete-script-folder.md
- …and 388 more: https://policylayer.com/tools/mcp-dev.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`

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