Discord MCP 服务

Discord MCP

Control a Discord bot from Claude Code or any MCP client: messages, channels, roles, members, moderation and live events.

Features

• 38 tools: messages, DMs, uploads, forwards, polls, channels, threads, forums, members, roles, moderation, AutoMod, scheduled events, emojis, invites and live events
• Names instead of IDs: say "general" or "@everyone", never a snowflake
• Bulk on every tool: pass an array anywhere a single value goes. discord_batch mixes different tools
• Long messages just work: text over 2000 characters is split cleanly, and code blocks stay intact
• Safe by default: destructive actions stay off until you enable them
• Hardened against prompt injection: no admin-grade grants, mass pings, secret-file uploads or internal-network fetches unless you allow them
• Helpful errors: every error says how to fix it, not just what broke

Setup

1. Create a bot at discord.com/developers/applications -> New Application -> Bot -> Reset Token.
2. On the same Bot page enable Message Content Intent and Server Members Intent.
3. Invite it to your server via OAuth2 -> URL Generator (scopes: bot, applications.commands).

Add to Claude Code

claude mcp add discord --env DISCORD_TOKEN=your_token_here -- npx -y @el4cteo/discord-mcp

Or from a local clone:

git clone https://github.com/EL4CTEO/discord-mcp.git
cd discord-mcp && npm install   # also builds
claude mcp add discord --env DISCORD_TOKEN=your_token_here -- node /absolute/path/to/discord-mcp/dist/index.js

Restart Claude Code, then ask it to run discord_whoami to check the connection.

Configuration

Tools

Server - discord_whoami discord_list_guilds discord_get_guild discord_create_invite

Channels - discord_list_channels discord_create_channel discord_edit_channel discord_delete_channel* discord_manage_thread discord_set_channel_permissions discord_reorder_channels

Messages - discord_send_message discord_send_dm discord_read_messages discord_search_messages discord_edit_message discord_delete_message* discord_react discord_pin_message discord_manage_poll

People - discord_list_members discord_get_member discord_edit_member discord_manage_member_roles discord_list_roles discord_manage_role discord_reorder_roles

Moderation - discord_moderate_member discord_bulk_delete* discord_list_bans discord_get_audit_log discord_automod

Community - discord_scheduled_events discord_manage_emojis discord_manage_invites

Live events - discord_wait_for_event discord_recent_events

Batch - discord_batch

* needs DISCORD_ALLOW_DESTRUCTIVE=true, and stays hidden until then. Tools that mix safe and destructive actions (deleting a role, kicking or banning, deleting events, rules, emojis or invites) refuse just the destructive ones.

Security

Discord messages are written by strangers, and the agent reads them. So the server refuses what an injected instruction would ask for, unless you allow it:

• Admin-grade grants: creating or assigning a role with Administrator, Manage Roles, Ban Members and similar, granting them on a channel, or un-hiding a private channel
• Mass pings: @everyone / @here need DISCORD_ALLOW_MASS_MENTIONS=true
• File uploads: only from DISCORD_UPLOAD_DIRS. Keys, .env files, the bot token and private keys are refused, even renamed
• URL uploads: only public http(s) hosts. Private, loopback and cloud-metadata addresses are blocked, including through redirects and DNS tricks
• Exact targets: bans, kicks, timeouts, purges and deletes need the exact name or ID, never a partial match
• Strict arguments: a misspelled argument is rejected instead of silently ignored

Batch example

{
  "operations": [
    { "tool": "discord_send_message", "args": { "channel": "general", "content": "Deploy done" } },
    { "tool": "discord_manage_member_roles", "args": { "member": "alice", "add": ["Release"] } }
  ],
  "defaults": { "guild": "my server" }
}

One failure does not stop the rest - every operation reports its own result.

Architecture

src/
├─ index.ts          stdio entry point
├─ config.ts         env parsing and validation
├─ server.ts         MCP wiring
├─ discord/
│  ├─ rest.ts        REST client, automatic rate-limit buckets
│  ├─ gateway.ts     WebSocket - connects lazily, closes when idle
│  ├─ cache.ts       TTL cache for name lookups
│  └─ resolve.ts     names -> IDs
├─ tools/            one module per capability group
├─ lib/              errors, formatting, concurrency, output fitting, text splitting
└─ schemas/          shared Zod schemas

REST handles every action, so startup is instant. The WebSocket only opens when a tool needs live events, and closes again after 2 minutes idle.

Bulk operations

Every tool that acts on a thing accepts an array wherever it accepts one value:

// one channel
{ "channel": "general", "content": "hi" }

// or fifty, in parallel, from the same tool
{ "channel": ["general", "announcements", "codes"], "content": "hi" }

Items are grouped by rate-limit bucket, run in parallel across buckets, and each reports its own result - so one failure never hides the rest:

discord_send_message on 3 items: 2 succeeded, 1 failed.

Use discord_batch instead when the calls are different tools.

Performance

• Warm start: name caches load while the client connects
• Caches stay fresh: the server's own edits, and live gateway events, update the caches in place, so nothing needs a refetch
• Real bulk endpoints: arrays of message deletes and bans each go out as one request
• One request for many role changes: adding or removing several roles on a member is a single call
• Compact output: JSON has no indentation, and oversized results are trimmed evenly across items instead of cut off at the end
• Bucket-aware batching: calls run in parallel across Discord rate-limit buckets
• Cancellable: when the client cancels a call, waits and batches stop, and long batches report their progress

Development

npm run dev        # watch mode
npm test           # run tests
npm run typecheck  # types only

Notes

• Reading other people's message content needs the Message Content Intent.
• Listing all members needs the Server Members Intent.
• To assign or moderate a role, the bot's own role must sit above it in Server Settings → Roles.
• Bulk delete only works on messages newer than 14 days.

License

MIT