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Discord MCP Integration for LangGraph

Connect Discord to LangGraph through the local KosmoKrator MCP gateway with scoped tools, credentials, and write policy.

7 functions 6 read 1 write Bearer token auth
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Connect Discord to LangGraph

Run KosmoKrator integration calls from LangGraph nodes while preserving local credentials and permissions.

Use a graph node that calls the KosmoKrator CLI for deterministic steps or an MCP client for dynamic tool selection. The gateway is local, scoped to this integration, and starts with --write=deny so LangGraph can inspect read-capable tools without receiving write access by default.

Discord MCP Config for LangGraph

Headless CLI calls fit repeatable graph edges; MCP fits exploratory agent nodes.

{
  "mcpServers": {
    "kosmokrator-discord": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=discord",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=discord --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only Discord instead of a broad multi-service tool list.

Local credentials

Reuse credentials already configured for the KosmoKrator CLI and Lua runtime.

Write policy

Start read-only, then opt into ask or allow for trusted workspaces.

Discord Tools Visible to LangGraph

LangGraph sees stable MCP tool names generated from the Discord integration catalog.

MCP toolSource functionTypeDescription
integration__discord__discord_list_channels discord.discord_list_channels Read List all channels in a Discord guild. Returns channel IDs, names, types, and topics.
integration__discord__discord_get_channel discord.discord_get_channel Read Get information about a Discord channel by its ID. Returns the channel's ID, name, type, topic, and other properties.
integration__discord__discord_send_message discord.discord_send_message Write Send a message to a Discord channel. Supports text content and rich embeds. Returns the sent message ID and channel ID.
integration__discord__discord_list_messages discord.discord_list_messages Read Get messages from a Discord channel. Supports pagination with before/after and limit. Returns message IDs, content, author info, and timestamps.
integration__discord__discord_list_guilds discord.discord_list_guilds Read List guilds the current Discord user is a member of. Returns guild IDs, names, icons, and owner status. Use limit, before, and after for pagination.
integration__discord__discord_get_guild discord.discord_get_guild Read Get information about a Discord guild by its ID. Returns the guild's ID, name, icon, description, member count, and other properties.
integration__discord__discord_get_current_user discord.discord_get_current_user Read Retrieve the currently authenticated Discord user. Returns the user's ID, username, discriminator, and avatar. Useful for identifying which account or token is in use.

Related Discord Pages

Discord CLIUse direct JSON commands instead of MCP discovery. Discord MCPFull gateway reference and MCP tool names. KosmoKrator for LangGraphClient-level gateway setup.