How to integrate Discord MCP with Codex

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Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Discord MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

Also integrate Discord with

Why use Composio?

Apart from a managed and hosted MCP server, you will get:

  • CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Large tool responses: Handle them to minimise context rot.
  • Dynamic just-in-time access to 20,000 tools across 870+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need.

How to install Discord MCP in Codex

Run the setup command

Run this command in your terminal to add the Composio MCP server to Codex.

Terminal

It will initiate the authentication in a browser window, authorize Codex to access your Composio account.

Composio authentication page

(Optional) Authenticate with OAuth

To authenticate manually, run the login command to open a browser window and authorize Codex to access your Composio account.

bash
codex mcp login composio

Verify the connection

Run codex mcp list to confirm Composio appears as a registered MCP server.

bash
codex mcp list

Codex App

Codex App follows the same approach as VS Code.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
  2. Fill the header and Key fields with { "x-consumer-api-key" = "ck_*******" }.
  3. The Key is the Composio API key, that you can find on connect.composio.dev
  4. Click on Authenticate and authorize Codex to your Composio account and you're all set.
Codex App MCP setup
  1. Restart and verify if it's there in .codex/config.toml
bash
[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }

What is the Discord MCP server, and what's possible with it?

The Discord MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Discord account. It provides structured and secure access to your Discord profile, connected accounts, servers, and invites, so your agent can fetch user details, list your servers (guilds), retrieve invite info, and manage your Discord presence on your behalf.

  • Retrieve and manage user profile information: Your agent can fetch your Discord profile details, including email and connected third-party accounts, to help keep your data organized and up-to-date.
  • Server (guild) discovery and membership checks: Effortlessly list all servers you belong to and verify your membership status in any server.
  • Access invite details and server info: Instantly get information about specific Discord invite codes, including the destination server or channel details.
  • Guild member insights: Allow your agent to retrieve your own guild member information across servers, including permissions and roles.
  • OAuth2 application and authorization review: Let your agent fetch your app’s OAuth2 authorization details, so you always know what permissions are granted and when tokens expire.

Supported Tools & Triggers

Tools
Triggers
Get InviteTool to retrieve information about a specific invite code.
Get my guild memberRetrieves the guild member object for the currently authenticated user within a specified guild, provided they are a member of that guild.
Get my OAuth2 authorizationRetrieves current oauth2 authorization details for the application, including app info, scopes, token expiration, and user data (contingent on scopes like 'identify').
Get my userFetches comprehensive profile information for the currently authenticated discord user, including email if the 'email' scope is granted.
Retrieve user connectionsRetrieves a list of the authenticated user's connected third-party accounts on discord.
List my guildsLists the current user's guilds, returning partial data for each; primarily used for displaying server lists or verifying memberships.

Conclusion

You've successfully integrated Discord with Codex using Composio's MCP server. Now you can interact with Discord directly from your terminal, VS Code, or the Codex App using natural language commands.

Key benefits of this setup:

  • Seamless integration across CLI, VS Code, and standalone app
  • Natural language commands for Discord operations
  • Managed authentication through Composio
  • Access to 20,000+ tools across 870+ apps for cross-app workflows
  • CodeAct workbench for complex tool chaining

Next steps:

  • Try asking Codex to perform various Discord operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities

How to build Discord MCP Agent with another framework

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OpenAI Agents SDK

Use Discord MCP with OpenAI Agents SDK

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Claude Agent SDK

Use Discord MCP with Claude Agent SDK

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Claude Code

Use Discord MCP with Claude Code

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OpenClaw

Use Discord MCP with OpenClaw

CLI logo

CLI

Use Discord MCP with CLI

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Google ADK

Use Discord MCP with Google ADK

LangChain logo

LangChain

Use Discord MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Discord MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Discord MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Discord MCP with LlamaIndex

CrewAI logo

CrewAI

Use Discord MCP with CrewAI

FAQ

What are the differences in Tool Router MCP and Discord MCP?

With a standalone Discord MCP server, the agents and LLMs can only access a fixed set of Discord tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Discord and many other apps based on the task at hand, all through a single MCP endpoint.

Can I use Tool Router MCP with Codex?

Yes, you can. Codex fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Discord tools.

Can I manage the permissions and scopes for Discord while using Tool Router?

Yes, absolutely. You can configure which Discord scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Discord data and credentials are handled as safely as possible.

Used by agents from

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Context
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glean
HubSpot
Agent.ai
Altera
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Context
Letta
glean
HubSpot
Agent.ai
Altera
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Entelligence
Rolai

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