This record as markdown: /tools/mcp-dev/delete-media-type.md
What delete-media-type does on Mcp Dev
AI agents call delete-media-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-media-type is rated Critical
This tool performs an irreversible deletion operation on a media type object within the CMS. Media type definitions are structural components that likely govern how media assets are managed; deleting one cannot be undone and may break dependent content or workflows. This is a classic Destructive action per the classification rules.
From the tool's definition Tool name is 'delete-media-type' and description states 'Deletes a media type by Id'. The verb 'delete' combined with the irreversible nature of removing a media type definition from an Umbraco CMS indicates permanent data loss.
Attacks that exploit this kind of access
The rule that runs delete-media-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-media-type, this is the rule to start with:
delete-media-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-media-type call is checked against it from then on.
Questions about delete-media-type
Deletes a media 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-media-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-media-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-media-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-media-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-media-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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