Removes a specific emoji reaction from a Discord message
AI agents call discord_remove_reaction to permanently remove resources in MCP-Discord — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Removing a reaction is an irreversible deletion of that reaction from the message. While the blast radius is low (only an emoji reaction is affected, not critical data), the action cannot be undone without the user re-adding it manually, placing it in the Destructive category rather than Write.
From the tool's definition 'Removes a specific emoji reaction from a Discord message'
Documented attack patterns abuse exactly the kind of access discord_remove_reaction gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP-Discord, and nothing reaches the server without passing your rules. This is the rule we recommend for discord_remove_reaction:
{
"version": "1",
"default": "deny",
"hide": [
"discord_remove_reaction"
]
}discord_remove_reaction disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
Free to start. No card required.
Removes a specific emoji reaction from a Discord message. It is categorised as a Destructive tool in the MCP-Discord MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the MCP-Discord MCP server in PolicyLayer and add a rule for discord_remove_reaction: 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 MCP-Discord. Nothing to install.
discord_remove_reaction 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_reaction 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_reaction. 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_reaction is provided by the MCP-Discord MCP server (barryyip0625/mcp-discord). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP-Discord, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
43 MCP-Discord tools catalogued and risk-classified — across an index of 43,000+ MCP servers.