How to integrate Heyy MCP with Atomic Agent

Connect Atomic Agent to Heyy MCP. Send promotional sms to vip customers, reply to unread instagram messages, and more using natural language, with authentication handled for you.

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Api Key

Heyy is a messaging automation platform for WhatsApp, SMS, Messenger, and Instagram. Streamline customer conversations across channels with one tool.

13 Tools

Introduction

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Heyy.

This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Heyy account. See the Atomic Agent documentation for installation instructions.

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How Atomic Agent connects to Heyy

Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.

Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

Connect Heyy to Atomic Agent

  1. Sign up or sign in to the Composio dashboard. Copy your API key.
  2. In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
  3. Ask Atomic Agent to do something in Heyy. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Heyy account, then return to Atomic Agent to continue.

Headless setup

Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY

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

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

Use Heyy from Atomic Agent

With your account connected, ask Atomic Agent to work with Heyy in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.

Troubleshooting

Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See Composio pricing for the current limits that apply to your connection.

TOOLS

Supported Tools

Every Heyy action and event your agent gets out of the box.

Create Contact Attribute

Tool to create a new custom attribute for contacts in Heyy.

Create Contact

Tool to create a new contact in Heyy with optional details including first name, last name, email, phone number, labels, and custom attributes.

Create Label

Tool to create a new label for categorizing contacts in Heyy.

Create Webhook

Tool to create a new webhook for receiving event notifications across multiple channels.

Delete Attribute

Tool to delete an attribute by its unique identifier.

Delete Label

Tool to delete a label by its unique identifier.

Delete Webhook

Tool to delete a webhook by its unique identifier.

List Attributes

Tool to retrieve all attributes available in the Heyy system.

List Automations

Tool to retrieve automation workflows for a specified channel.

List Channels

Tool to retrieve all available channels from the Heyy system.

List Message Templates

Tool to retrieve all message templates available in the Heyy system.

List API Webhooks

Tool to retrieve all API webhooks configured for the account.

Update Webhook

Tool to update a webhook's URL and active status.

FAQ

Frequently asked questions

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

Yes, you can. Atomic Agent 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 Heyy tools.

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

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