Remove reactions from a message. With no emoji: removes ALL reactions. With emoji only: removes every reaction of that emoji. With emoji and user_id: removes that one user
AI agents call discord_remove_reactions to permanently remove resources in Discord — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes reactions from Discord messages. While the direct impact is limited to metadata (not core message content or user data), the operation is irreversible and could affect message sentiment/engagement tracking. The ability to remove 'ALL reactions' with a single call represents a moderate blast radius.
From the tool's definition Tool description: 'removes ALL reactions', 'removes every reaction of that emoji', 'removes that one user'. The action irreversibly deletes reaction data from a message with no undo mechanism.
Attacks that exploit this kind of access
Remove reactions from a message. With no emoji: removes ALL reactions. With emoji only: removes every reaction of that emoji. With emoji and user_id: removes that one user. It is categorised as a Destructive tool in the Discord MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Discord MCP server in PolicyLayer and add a rule for discord_remove_reactions: 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. Nothing to install.
discord_remove_reactions 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_remove_reactions 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_remove_reactions. 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_remove_reactions is provided by the Discord MCP server (@pasympa/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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