delete_blueprint_function

Delete a function from a Blueprint.

SERVERUnreal-MCP SOURCEaadeshrao123/unreal-mcp

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aadeshrao123-unreal-mcp/delete-blueprint-function.md

WHAT IT DOES

What delete_blueprint_function does on Unreal-MCP

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

RISK

Why delete_blueprint_function is rated Critical

Deletion of blueprint functions is an irreversible operation that cannot be undone programmatically by the tool itself. In the context of an AI agent controlling UE5 editor, mistaken deletion of critical game logic, event handlers, or core blueprint functionality could break project functionality.

From the tool's definition Tool name 'delete_blueprint_function' combined with description 'Delete a function from a Blueprint' indicates irreversible removal of code/data within Unreal Engine projects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs delete_blueprint_function safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Unreal-MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For delete_blueprint_function, this is the rule to start with:

delete_blueprint_function Hidden

delete_blueprint_function is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_blueprint_function"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Unreal-MCP, apply this rule, and every delete_blueprint_function call is checked against it from then on.

FAQ

Questions about delete_blueprint_function

What does the delete_blueprint_function tool do? +

Delete a function from a Blueprint. It is categorised as a Destructive tool in the Unreal-MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on delete_blueprint_function? +

Register the Unreal MCP server in PolicyLayer and add a rule for delete_blueprint_function: 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 Unreal-MCP. Nothing to install.

What risk level is delete_blueprint_function? +

delete_blueprint_function is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit delete_blueprint_function? +

Yes. Add a rate_limit block to the delete_blueprint_function 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.

How do I block delete_blueprint_function completely? +

Set action: deny in the PolicyLayer policy for delete_blueprint_function. 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.

What MCP server provides delete_blueprint_function? +

delete_blueprint_function is provided by the Unreal MCP server (aadeshrao123/unreal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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