discord_post_message_files

Post a message with 1-10 file attachments (base64).

SERVERDiscord MCP Server SOURCEbennettschwartz/discord-mcp

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/bennettschwartz-discord-mcp/discord-post-message-files.md

WHAT IT DOES

What discord_post_message_files does on Discord MCP Server

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

RISK

Why discord_post_message_files is rated Medium

This tool creates new Discord messages with file attachments. While it modifies server state by adding content, the action is reversible (messages can be deleted) and does not irreversibly destroy data, execute arbitrary code, or commit financial obligations.

From the tool's definition Tool name 'discord_post_message_files' and description 'Post a message with 1-10 file attachments' indicates creating/adding new message content with files to Discord, which is a reversible creation action.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs discord_post_message_files safely

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

discord_post_message_files Rate-limited

discord_post_message_files 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_post_message_files": {
      "limits": [
        {
          "counter": "discord_post_message_files_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 Discord MCP Server, apply this rule, and every discord_post_message_files call is checked against it from then on.

FAQ

Questions about discord_post_message_files

What does the discord_post_message_files tool do? +

Post a message with 1-10 file attachments (base64). It is categorised as a Write tool in the Discord MCP Server 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_post_message_files? +

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

What risk level is discord_post_message_files? +

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

Can I rate-limit discord_post_message_files? +

Yes. Add a rate_limit block to the discord_post_message_files 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_post_message_files completely? +

Set action: deny in the PolicyLayer policy for discord_post_message_files. 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_post_message_files? +

discord_post_message_files is provided by the Discord MCP Server MCP server (bennettschwartz/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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