Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Mocean MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.
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Connect Mocean without Auth hassles
We manage OAuth, API Key, token refresh, and scopes, you just build.
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Also integrate Mocean 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 Mocean MCP in Codex
Run the setup command
Run this command in your terminal to add the Composio MCP server to Codex.
It will initiate the authentication in a browser window, authorize Codex to access your Composio account.
(Optional) Authenticate with OAuth
To authenticate manually, run the login command to open a browser window and authorize Codex to access your Composio account.
Verify the connection
Run codex mcp list to confirm Composio appears as a registered MCP server.
Codex App
Codex App follows the same approach as VS Code.
- Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
- Fill the header and Key fields with
{ "x-consumer-api-key" = "ck_*******" }. - The Key is the Composio API key, that you can find on connect.composio.dev
- Click on Authenticate and authorize Codex to your Composio account and you're all set.
- Restart and verify if it's there in
.codex/config.toml
What is the Mocean MCP server, and what's possible with it?
The Mocean MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Mocean account. It provides structured and secure access to your messaging and verification tools, so your agent can send SMS messages, initiate voice calls, manage two-factor authentication flows, and engage customers with real-time notifications on your behalf.
- Automated SMS delivery: Instantly send text messages to users for alerts, notifications, or customer engagement with just a prompt to your agent.
- Voice call automation: Instruct your agent to place voice calls for reminders, confirmations, or interactive customer communication flows.
- Multi-factor authentication (MFA): Let your agent handle one-time password (OTP) generation and verification, streamlining secure user onboarding and login.
- Two-way messaging management: Enable your agent to receive and process incoming SMS messages, supporting interactive conversations and quick customer responses.
- Bulk campaign execution: Run large-scale SMS or voice campaigns through your agent, reaching many users simultaneously for marketing or transactional updates.
Supported Tools & Triggers
Tools
Conclusion
You've successfully integrated Mocean with Codex using Composio's MCP server. Now you can interact with Mocean 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 Mocean 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 Mocean operations
- Explore cross-app workflows by connecting more toolkits
- Build automation scripts that leverage Codex's AI capabilities
How to build Mocean MCP Agent with another framework
Explore Other Toolkits
FAQ
What are the differences in Tool Router MCP and Mocean MCP?
With a standalone Mocean MCP server, the agents and LLMs can only access a fixed set of Mocean tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Mocean 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 Mocean tools.
Can I manage the permissions and scopes for Mocean while using Tool Router?
Yes, absolutely. You can configure which Mocean 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 Mocean data and credentials are handled as safely as possible.
