# update-data-type Updates a data type by Id Agent View of the PolicyLayer registry record for `update-data-type`. HTML page: https://policylayer.com/tools/mcp-dev/update-data-type ## Facts - Tool: `update-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: 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": "update-data-type", "arguments": {} } } ``` ## Why update-data-type is rated Medium This tool creates or modifies data reversibly, fitting the Write category. Severity is medium because misconfiguration of data types could affect content validation and data integrity across the CMS, but the change is not irreversible and does not directly delete data, move money, or execute arbitrary code. From the tool's own definition: "Tool name 'update-data-type' and description 'Updates a data type by Id' indicate modification of existing data without deletion. In the context of Umbraco CMS, data types are configuration objects that define field validation and processing rules." ## Use case AI agents use update-data-type to create or update resources in Mcp Dev, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Dev environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mcp Dev: ```json { "version": "1", "default": "deny", "tools": { "update-data-type": { "limits": [ { "counter": "update-data-type_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## 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` — Destructive — https://policylayer.com/tools/mcp-dev/delete-data-type.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 - …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` --- 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