discord_react · UnClick MCP: Risk & Policy

WHAT IT DOES

What discord_react does on UnClick

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

PARAMETERS

Parameter	Type	Required
`emoji`	string	Yes
`bot_token`	string	Yes
`channel_id`	string	Yes
`message_id`	string	Yes

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why discord_react needs a policy

This tool modifies Discord message state by adding a reaction, which is reversible (reactions can be removed). It does not read data, execute code, delete anything, or involve financial transactions. The blast radius is minimal—an AI agent could spam reactions but cannot cause serious harm. Classified as Write with low severity.

From the tool's definition Tool name 'discord_react' and description 'Add a reaction to a Discord message' indicate a modification action that creates/adds a reaction emoji to an existing message.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

discord_react Rate-limited

discord_react 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_react": {
      "limits": [
        {
          "counter": "discord_react_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches UnClick, so you can run agents against it safely.

FAQ

Questions about discord_react

What does the discord_react tool do? +

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

What parameters does discord_react accept? +

discord_react accepts 4 parameters: emoji, bot_token, channel_id, message_id. Required: emoji, bot_token, channel_id, message_id. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on discord_react? +

Register the UnClick MCP server in PolicyLayer and add a rule for discord_react: 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 UnClick. Nothing to install.

What risk level is discord_react? +

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

Can I rate-limit discord_react? +

Yes. Add a rate_limit block to the discord_react 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_react completely? +

Set action: deny in the PolicyLayer policy for discord_react. 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_react? +

discord_react is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.