How to integrate Engage MCP with Atomic Agent

Connect Atomic Agent to Engage MCP. Send sms to users about black friday deals, create and schedule a new email campaign, and more using natural language, with authentication handled for you.

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Engage is a messaging platform for personalized emails, push notifications, and SMS. It helps businesses build loyalty with targeted, automated communications.

22 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 Engage.

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 Engage account. See the Atomic Agent documentation for installation instructions.

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How Atomic Agent connects to Engage

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 Engage 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 Engage. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Engage 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 Engage MCP server, and what's possible with it?

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

Use Engage from Atomic Agent

With your account connected, ask Atomic Agent to work with Engage 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 Engage action and event your agent gets out of the box.

Add Customer to Accounts

Tool to add a customer to one or more account entities.

Add User to Lists

Tool to add a Customer or Account to one or more Lists in Engage.

Archive List

Tool to archive a List in Engage.

Archive User

Tool to archive a user in Engage.

Convert User Type

Tool to convert a user between Customer and Account entity types.

Create List

Tool to create a new List in Engage for organizing subscribers.

Create User

Tool to create a new user (Customer or Account) in Engage.

Delete Subscriber From List

Tool to remove a subscriber from a List entirely (different from unsubscribing).

Delete User

Tool to completely delete all user data for a Customer or Account.

Get Account Members

Tool to retrieve all members (Customers) of an Account in Engage.

Get List

Tool to retrieve a single List by its ID.

Get User By ID

Tool to retrieve a single user by their user ID.

List Lists

Tool to retrieve a paginated list of all Lists in Engage.

List Users

Tool to retrieve a paginated list of all users in Engage.

Merge Users

Tool to merge two user profiles in Engage.

Remove Customer from Account

Tool to remove a Customer from an Account in Engage.

Batch Request

Tool to batch multiple create user, update user, and add user events operations into a single API call.

Subscribe User to List

Tool to create a user and subscribe them to an Engage.

Track User Event

Tool to add user events to Engage.

Update Account Role

Tool to update the role of a Customer in an Account or set a new one if none exists.

Update Subscriber Status

Tool to update a subscriber's status on a List.

Update User

Tool to update user data and attributes on Engage.

FAQ

Frequently asked questions

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

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

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