Webhookで送信したメッセージを削除します。 環境変数DISCORD_WEBHOOK_URLに設定されたWebhookを使用します。 ⚠️ レート制限: 30リクエスト/分/チャンネル ⚠️ この操作は取り消せません。 Args: - message_id (string, required): 削除するメッセージID Returns: {
AI agents call discord_delete_message to permanently remove resources in Discord Webhook MCP — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently deletes Discord messages with no undo capability. Deletion is irreversible data loss, placing it in the Destructive category. Severity is high because an agent could delete important messages, channels of communication, or evidence, causing significant disruption. However, it is scoped to messages the webhook has permission to delete, not entire accounts or servers, preventing a critical rating.
From the tool's definition Tool description explicitly states '削除します' (deletes) and '⚠️ この操作は取り消せません' (This operation cannot be undone). The function name is 'discord_delete_message' and it irreversibly removes messages from Discord.
Attacks that exploit this kind of access
Webhookで送信したメッセージを削除します。 環境変数DISCORD_WEBHOOK_URLに設定されたWebhookを使用します。 ⚠️ レート制限: 30リクエスト/分/チャンネル ⚠️ この操作は取り消せません。 Args: - message_id (string, required): 削除するメッセージID Returns: {. It is categorised as a Destructive tool in the Discord Webhook MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Discord Webhook MCP server in PolicyLayer and add a rule for discord_delete_message: 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 Discord Webhook MCP. Nothing to install.
discord_delete_message 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 discord_delete_message 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 discord_delete_message. 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.
discord_delete_message is provided by the Discord Webhook MCP server (kongyo2/discord-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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