This record as markdown: /tools/mcp-dev/delete-member-type.md
What delete-member-type does on Mcp Dev
AI agents call delete-member-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.
Why delete-member-type is rated Critical
This tool permanently removes a member type from an Umbraco CMS instance. Deletion of CMS member types is irreversible and could affect user management systems, authentication flows, and dependent member records. While not as critical as deleting all members themselves, removing a member type definition has significant destructive potential.
From the tool's definition Tool name is 'delete-member-type' and description states 'Deletes a member type by id'. The verb 'deletes' combined with the operation of removing a member type indicates an irreversible destructive action.
Attacks that exploit this kind of access
The rule that runs delete-member-type safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Dev, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For delete-member-type, this is the rule to start with:
delete-member-type is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Dev, apply this rule, and every delete-member-type call is checked against it from then on.
Questions about delete-member-type
Deletes a member type by id. It is categorised as a Destructive tool in the Mcp Dev MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Mcp Dev MCP server in PolicyLayer and add a rule for delete-member-type: 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 Mcp Dev. Nothing to install.
delete-member-type is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete-member-type 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.
Set action: deny in the PolicyLayer policy for delete-member-type. 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.
delete-member-type is provided by the Mcp Dev MCP server (@umbraco-cms/mcp-dev). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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