How to integrate Whatsapp MCP with Hermes

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Introduction

Hermes is a 24/7 autonomous agent that lives on your computer or server — it remembers what it learns and evolves as your usage grows.

This guide explains the easiest and most robust way to connect your Whatsapp account to Hermes. You can do this through either Composio Connect CLI or Composio Connect MCP. For personal use we recommend the CLI, but you won't go wrong with MCP either.

Also integrate Whatsapp with

What is Composio Connect?

Composio Connect is a consumer offering that lets anyone plug 1,000+ applications directly into their agent harness — including Hermes. It can:

  • Search and load tools from relevant toolkits on-demand, reducing context usage.
  • Chain multiple tools to accomplish complex workflows via a remote workbench, without excessive back-and-forth with the LLM.
  • Manage app authentication end-to-end with zero manual overhead.

Integrating Whatsapp with Hermes

Using Composio Connect CLI

1. Install the Composio CLI

Run the install script directly, or paste https://composio.dev/hermes into your Hermes chat box to have it installed for you.

bash
curl -fsSL https://composio.dev/install | bash
Hermes authenticating with Composio

2. Authenticate

Once the CLI is installed, ask Hermes to authenticate with Composio.

3. Connect to Whatsapp

Ask your agent to connect to Whatsapp, or simply request any Whatsapp-related task. Hermes will prompt you to authenticate and authorize access.

4. Done. You're all set with a new Whatsapp connection.

Using Composio Connect MCP

1. Get your MCP URL and API Key

Go to dashboard.composio.dev and copy your Connect MCP URL and API key.

Copy MCP URL and API key from Composio dashboard

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 Business account. It provides structured and secure access to your business messaging platform, so your agent can perform actions like sending messages, managing templates, retrieving business info, and automating customer interactions on your behalf.

  • Automated messaging and contact sharing: Let your agent send messages or share contacts directly with customers who have initiated a conversation, making follow-ups and support quick and seamless.
  • Template management and automation: Easily create, retrieve, and delete WhatsApp message templates for marketing or transactional outreach, and keep your approved messages organized.
  • Business profile and phone management: Fetch and update business profile details or pull a full list of WhatsApp Business phone numbers connected to your account for easy management.
  • Media access and metadata retrieval: Direct your agent to download sent media or fetch detailed information about uploaded files—perfect for handling customer attachments or verifying uploads.
  • Template approval and status tracking: Automatically check the approval status of message templates, so your agent knows which templates are ready to use or need revision.

Supported Tools & Triggers

Tools
Create message templateCreate a new message template for the whatsapp business account.
Delete message templateDelete a message template from the whatsapp business account.
Get business profileGet the business profile information for a whatsapp business phone number.
Get mediaGet information about uploaded media including a temporary download url.
Get media infoGet metadata about uploaded media without generating a download url.
Get message templatesGet all message templates for the whatsapp business account.
Get phone numberGet details of a specific phone number associated with a whatsapp business account.
Get phone numbersGet all phone numbers associated with a whatsapp business account (waba).
Get template statusGet the status and details of a specific message template.
Send contactsSend contacts whatsapp number.
Send interactive buttonsSend an interactive button message to a whatsapp number.
Send interactive listSend an interactive list message to a whatsapp number.
Send locationSend a location message to a whatsapp number.
Send mediaSend a media message to a whatsapp number.
Send media bySend media using a media id from previously uploaded media.
Send messageSend a text message to a whatsapp number.
Send replySend a reply to a specific message in a whatsapp conversation.
Send template messageSend a template message to a whatsapp number.
Upload mediaUpload media files (images, videos, audio, documents, stickers) to whatsapp servers.

Way Forward

With Whatsapp connected, Hermes can now act on your behalf whenever it detects a relevant task or you ask it to.

From here, you can extend Hermes further:

  • Connect more apps: Calendar, Slack, Notion, Linear, and hundreds of others are available through the same Composio Connect setup. Each new integration compounds what Hermes can do for you.
  • Build workflows across tools: Once multiple apps are connected, Hermes can chain actions together — turn an email into a calendar invite, a Slack message into a Linear ticket, or a meeting note into a follow-up draft.
  • Let it learn your patterns: The more you use Hermes, the better it gets at anticipating how you'd handle recurring tasks. Give it feedback on drafts and decisions, and it will adapt.

If you run into trouble or want to share what you've built, join the community or check out the Docs for deeper configuration options.

How to build Whatsapp MCP Agent with another framework

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FAQ

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

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.

Can I use Tool Router MCP with Hermes?

Yes, you can. Hermes 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.

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

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.

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 Whatsapp data and credentials are handled as safely as possible.

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