Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Whatsapp MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.SIGN UP
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.LOG IN
How to integrate Whatsapp MCP with Codex
Connect Codex to Whatsapp MCP. Send contact card to new lead, get business profile details for support, and more using natural language, with authentication handled for you.
Oauth2Api Key
WhatsApp is a business messaging platform for secure, automated customer communication. It streamlines chat workflows and customer outreach using the WhatsApp Business API.
58 Tools1 Triggers
Introduction
Also integrate Whatsapp 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 1500+ 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 Whatsapp 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.
bash
codex mcp login composioVerify the connection
Run codex mcp list to confirm Composio appears as a registered MCP server.
bash
codex mcp listCodex 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 dashboard.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
bash
[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }What is the Whatsapp MCP server, and what's possible with it?
The WhatsApp MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your WhatsApp account. It provides structured and secure access to your WhatsApp Business account settings, profiles, templates, flows, and phone configuration, so your agent can manage business details, register phone numbers, maintain templates, update flows, and review account settings on your behalf.
- Business profile management: Have your agent update your business description, contact information, and other WhatsApp Business profile settings.
- Phone number administration: Direct your agent to register or deregister a WhatsApp Business phone number and set its two-step verification PIN.
- Message template management: Let the agent browse the template library and create or update templates for your WhatsApp Business account.
- Flow and commerce configuration: Instruct your agent to review Flow assets, update Flow configurations, and check commerce settings for your business phone number.
- Account oversight and access: Have your agent review owned or shared business accounts, inspect compliance and encryption details, manage assigned user access, and subscribe your application to account notifications.
Conclusion
You've successfully integrated Whatsapp with Codex using Composio's MCP server. Now you can interact with Whatsapp 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 Whatsapp operations
- Managed authentication through Composio
- Access to 20,000+ tools across 1500+ apps for cross-app workflows
- CodeAct workbench for complex tool chaining
Next steps:
- Try asking Codex to perform various Whatsapp operations
- Explore cross-app workflows by connecting more toolkits
- Build automation scripts that leverage Codex's AI capabilities
TOOLS & TRIGGERS
Supported Tools and Triggers
Every Whatsapp action and event your agent gets out of the box.
FRAMEWORKS
How to build Whatsapp MCP Agent with another framework
Claude Code
Use Whatsapp MCP with Claude Code
Cursor
Use Whatsapp MCP with Cursor
ChatGPT
Use Whatsapp MCP with ChatGPT
Claude Cowork
Use Whatsapp MCP with Claude Cowork
Antigravity
Use Whatsapp MCP with Antigravity
OpenAI Agents SDK
Use Whatsapp MCP with OpenAI Agents SDK
Claude Agent SDK
Use Whatsapp MCP with Claude Agent SDK
Grok Bot
Use Whatsapp MCP with Grok Bot
Muse
Use Whatsapp MCP with Muse
Kimi Code
Use Whatsapp MCP with Kimi Code
Grok Build
Use Whatsapp MCP with Grok Build
VS Code
Use Whatsapp MCP with VS Code
OpenCode
Use Whatsapp MCP with OpenCode
OpenClaw
Use Whatsapp MCP with OpenClaw
Hermes
Use Whatsapp MCP with Hermes
Atomic Agent
Use Whatsapp MCP with Atomic Agent
Pi
Use Whatsapp MCP with Pi
DeepSeek Harness
Use Whatsapp MCP with DeepSeek Harness
CLI
Use Whatsapp MCP with CLI
Google ADK
Use Whatsapp MCP with Google ADK
LangChain
Use Whatsapp MCP with LangChain
Vercel AI SDK
Use Whatsapp MCP with Vercel AI SDK
Mastra AI
Use Whatsapp MCP with Mastra AI
LlamaIndex
Use Whatsapp MCP with LlamaIndex
CrewAI
Use Whatsapp MCP with CrewAI
Pydantic AI
Use Whatsapp MCP with Pydantic AI
AutoGen
Use Whatsapp MCP with AutoGen
MORE TOOLKITS
Explore Other Toolkits
Gmail
Oauth2
Gmail is Google's email service with powerful spam protection, search, and G Suite integration. It keeps your inbox organized and makes communication fast and reliable.
Outlook
Oauth2S2s Oauth2
Outlook is Microsoft's email and calendaring platform for unified communications and scheduling. It helps users stay organized with powerful email, contacts, and calendar management.
Slack
Oauth2
Slack is a channel-based messaging platform for teams and organizations. It helps people collaborate in real time, share files, and connect all their tools in one place.
Gong
BasicOauth2
Gong is a platform for video meetings, call recording, and team collaboration. It helps teams capture conversations, analyze calls, and turn insights into action.
FAQ
Frequently asked questions
With a standalone Whatsapp MCP server, the agents and LLMs can only access a fixed set of Whatsapp tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Whatsapp and many other apps based on the task at hand, all through a single MCP endpoint.
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 Whatsapp tools.
Yes, absolutely. You can configure which Whatsapp 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.
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 Whatsapp data and credentials are handled as safely as possible.
Start with Whatsapp.It takes 30 seconds.
Managed auth, hosted MCP servers, and every Whatsapp tool your agent needs.Free to start.
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.Start building