discord_forward_message · Discord MCP: Risk & Policy

WHAT IT DOES

What discord_forward_message does on Discord

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

WHY IT NEEDS A POLICY

Why discord_forward_message needs a policy

Forwarding a message duplicates content across channels, which is a reversible write operation. It does not delete the original message (which would be Destructive), nor does it execute arbitrary code or commands (Execute), nor does it involve financial transactions.

From the tool's definition Tool name 'discord_forward_message' and description 'Forward an existing message to another channel' indicate the tool creates a copy of a message in a new location. This is a write operation that modifies state by adding new message content to a channel.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

discord_forward_message Rate-limited

discord_forward_message 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_forward_message": {
      "limits": [
        {
          "counter": "discord_forward_message_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 Discord, so you can run agents against it safely.

FAQ

Questions about discord_forward_message

What does the discord_forward_message tool do? +

Forward an existing message to another channel using Discord. It is categorised as a Write tool in the Discord 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_forward_message? +

Register the Discord MCP server in PolicyLayer and add a rule for discord_forward_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. Nothing to install.

What risk level is discord_forward_message? +

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

Can I rate-limit discord_forward_message? +

Yes. Add a rate_limit block to the discord_forward_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.

How do I block discord_forward_message completely? +

Set action: deny in the PolicyLayer policy for discord_forward_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.

What MCP server provides discord_forward_message? +

discord_forward_message 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.