Delete a range of lines from a script. The change is staged as a diff for review (unless auto-accept is on). Args: - path (string): Script path - startLine (number): First line to delete (1-based) - endLine (number): Last line to delete (1-based) Returns: Diff summary of the change.
AI agents call delete_script_lines to permanently remove resources in Melo — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly removes code from scripts in Roblox Studio. Even though a diff review stage exists, the core capability is destructive deletion of script content. In the context of an agentic system, an AI agent could maliciously or accidentally delete critical game logic, breaking functionality.
From the tool's definition The tool deletes a range of lines from a script via the description 'Delete a range of lines from a script.' The operation is irreversible—deleted lines cannot be recovered without external version control.
Attacks that exploit this kind of access
Delete a range of lines from a script. The change is staged as a diff for review (unless auto-accept is on). Args: - path (string): Script path - startLine (number): First line to delete (1-based) - endLine (number): Last line to delete (1-based) Returns: Diff summary of the change. It is categorised as a Destructive tool in the Melo MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Melo MCP server in PolicyLayer and add a rule for delete_script_lines: 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 Melo. Nothing to install.
delete_script_lines 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_script_lines 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_script_lines. 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_script_lines is provided by the Melo MCP server (yannyhl/linkedsword-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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