discord_add_reaction

Add a reaction emoji to a message

SERVERSage MCP SOURCEsagemcp/sagemcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/sagemcp-sagemcp/discord-add-reaction.md

WHAT IT DOES

What discord_add_reaction does on Sage MCP

AI agents use discord_add_reaction to create or update resources in Sage MCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Sage MCP environment.

RISK

Why discord_add_reaction is rated Medium

Adding a reaction modifies Discord message state by appending a reaction, making this a Write operation rather than Read. The severity is medium because while reactions are reversible and low-impact individually, an AI agent could spam reactions across many messages to disrupt communication or manipulate user engagement.

From the tool's definition Tool name 'discord_add_reaction' and description 'Add a reaction emoji to a message' indicate creation of a new reaction (emoji) on an existing Discord message, which modifies message state.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs discord_add_reaction safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Sage MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For discord_add_reaction, this is the rule to start with:

discord_add_reaction Rate-limited

discord_add_reaction stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "discord_add_reaction": {
      "limits": [
        {
          "counter": "discord_add_reaction_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Sage MCP, apply this rule, and every discord_add_reaction call is checked against it from then on.

FAQ

Questions about discord_add_reaction

What does the discord_add_reaction tool do? +

Add a reaction emoji to a message. It is categorised as a Write tool in the Sage MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on discord_add_reaction? +

Register the Sage MCP server in PolicyLayer and add a rule for discord_add_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 Sage MCP. Nothing to install.

What risk level is discord_add_reaction? +

discord_add_reaction is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit discord_add_reaction? +

Yes. Add a rate_limit block to the discord_add_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.

How do I block discord_add_reaction completely? +

Set action: deny in the PolicyLayer policy for discord_add_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.

What MCP server provides discord_add_reaction? +

discord_add_reaction is provided by the Sage MCP server (sagemcp/sagemcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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