How to integrate Cody 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 Cody MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or app, whichever you prefer.

Composio removes the Authentication handling completely from you. We handle the entire integration lifecycle, and all you need to do is just copy the URL below, authenticate inside Codex, and start using it.

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 Cody MCP in Codex

Codex CLI

Run the command in your terminal.

Terminal

This will auto-redirect you to the Rube authentication page.

Rube authentication redirect page

Once you're authenticated, you will be able to access the tools.

Verify the installation by running:

codex mcp list

If you otherwise prefer to use config.toml, add the following URL to it. You can get the bearer token from rube.app → Use Rube → MCP URL → Generate token

[projects."/home/user/composio"]
trust_level = "untrusted"

[mcp_servers.rube]
bearer_token_env_var = "your bearer token"
enabled = true
url = "https://rube.app/mcp"

Codex in VS Code

If you have installed Codex in VS Code.

Then: ⚙️ → MCP Settings → + Add servers → Streamable HTTP:

Add the Rube MCP URL: https://rube.app/mcp and the bearer token.

VS Code MCP Settings

To verify, click on the Open config.toml

Open config toml in Codex

Make sure it's there:

[mcp_servers.composio_rube]
bearer_token_env_var = "your bearer token"
enabled = true
url = "https://rube.app/mcp"

Codex App

Codex App follows the same approach as VS Code.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
Codex App MCP Settings
  1. Restart and verify if it's there in .codex/config.toml
[mcp_servers.composio_rube]
bearer_token_env_var = "your bearer token"
enabled = true
url = "https://rube.app/mcp"
  1. Save, restart the extension, and start working.

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

The Cody MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Cody account. It provides structured and secure access so your agent can perform Cody operations on your behalf.

Supported Tools & Triggers

Tools
Create ConversationTool to create a new conversation with a specified bot.
Create DocumentTool to create a new document with text or HTML content in Cody AI.
Create Document From FileTool to create a document by uploading a file (up to 100 MB).
Create Document from WebpageTool to create a document from a publicly accessible webpage URL.
Create FolderTool to create a new folder in Cody AI for organizing content.
Delete ConversationTool to delete a conversation by its ID.
Delete DocumentTool to delete a document by id.
Get ConversationTool to fetch a conversation by its ID from Cody AI.
Get DocumentTool to retrieve a specific document by its identifier from Cody AI.
Get FolderTool to retrieve a specific folder by its identifier.
Get MessageTool to fetch a specific message by its ID from Cody AI.
Get Upload Signed URLTool to get an AWS S3 signed upload URL for file uploads.
List BotsTool to get all bots with optional keyword filtering.
List ConversationsTool to get all conversations with optional filtering by bot, keyword, or includes.
List DocumentsTool to retrieve all documents from Cody AI account with optional filtering.
List FoldersTool to retrieve all folders with optional keyword filtering.
List MessagesTool to retrieve a paginated list of messages from Cody, optionally filtered by conversation.
Send MessageTool to send a message to Cody AI and receive an AI-generated response.
Send Message for StreamTool to send a message to Cody AI and receive a Server-Sent Events (SSE) stream URL for the AI response.
Update ConversationTool to update a conversation by its ID including name, bot_id, and document_ids.
Update FolderTool to update a folder by its ID.

Conclusion

You've successfully integrated Cody with Codex using Composio's Rube MCP server. Now you can interact with Cody 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 Cody operations
  • Managed authentication through Composio's Rube
  • 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 Cody operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities

How to build Cody MCP Agent with another framework

OpenAI Agents SDK

OpenAI Agents SDK

Use Cody MCP with OpenAI Agents SDK

Claude Agent SDK

Claude Agent SDK

Use Cody MCP with Claude Agent SDK

Google ADK

Google ADK

Use Cody MCP with Google ADK

LangChain

LangChain

Use Cody MCP with LangChain

Vercel AI SDK

Vercel AI SDK

Use Cody MCP with Vercel AI SDK

Mastra AI

Mastra AI

Use Cody MCP with Mastra AI

LlamaIndex

LlamaIndex

Use Cody MCP with LlamaIndex

CrewAI

CrewAI

Use Cody MCP with CrewAI

Claude Code

Claude Code

Use Cody MCP with Claude Code

FAQ

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

With a standalone Cody MCP server, the agents and LLMs can only access a fixed set of Cody tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Cody 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 Cody tools.

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

Yes, absolutely. You can configure which Cody 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 Cody data and credentials are handled as safely as possible.

Used by agents from

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HubSpot
Agent.ai
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