Delete a comment. Costs 50 quota units.
AI agents call delete_comment to permanently remove resources in Youtube — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deletion of comments is a destructive action that permanently removes user-generated content from YouTube. While the blast radius is constrained (a single comment rather than bulk data), the irreversible nature and potential for AI agent misuse (e.g., deleting legitimate community interactions) warrants 'high' severity. Confidence is high because the intent is explicit in both name and description.
From the tool's definition Tool name is 'delete_comment' and description states 'Delete a comment' — this irreversibly removes data that cannot be recovered through the tool's normal operations.
Attacks that exploit this kind of access
Delete a comment. Costs 50 quota units. It is categorised as a Destructive tool in the Youtube MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Youtube MCP server in PolicyLayer and add a rule for delete_comment: 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 Youtube. Nothing to install.
delete_comment 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_comment 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_comment. 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_comment is provided by the Youtube MCP server (kpfitzgerald/youtube-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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