How to integrate Unisender MCP with Atomic Agent

Connect Atomic Agent to Unisender MCP. Send an sms campaign to new signups, create a new email list segment, and more using natural language, with authentication handled for you.

Unisender logoUnisender
Api Key

UniSender is a service for email and SMS marketing campaigns. It helps you reach your audience easily and automate campaign management.

33 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 Unisender.

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

Also integrate Unisender with

How Atomic Agent connects to Unisender

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

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

Use Unisender from Atomic Agent

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

Check Email Status

Tool to check the delivery status of emails sent via sendEmail method.

Create Email Template

Tool to create a new email template for mass campaigns in UniSender.

Create Field

Tool to create a new custom field for contact data in UniSender.

Create List

Tool to create a new contact list for organizing thematic email campaigns in UniSender.

Create Subscriber Note

Tool to create a note for a subscriber contact in UniSender.

Delete Field

Tool to remove a custom field from the Unisender system.

Delete List

Tool to permanently delete a contact list from your UniSender account.

Delete Subscriber Note

Tool to delete a subscriber note from UniSender by its ID.

Delete Tag

Tool to delete a tag by its ID and remove it from all associated contacts.

Delete Template

Tool to remove a template from the UniSender account.

Exclude Contact from Lists

Tool to remove contacts from specified lists or all lists in UniSender.

Export Contacts

Tool to export contact data from UniSender lists for synchronization.

Get Campaigns

Tool to retrieve list of campaigns from Unisender within a specified date range.

Get Campaign Status

Tool to check the current status of a campaign in UniSender.

Get Contact

Tool to get information about a single contact from UniSender.

Get Contact Field Values

Tool to retrieve custom field values for a specific contact identified by email address.

Get Fields

Tool to retrieve all custom user-defined fields for contact personalization and data management.

Get Lists

Tool to retrieve all existing mailing lists associated with the account.

Get Messages

Tool to retrieve list of all messages with body and attachments.

Get Sender Domain List

Tool to retrieve information about sender domains and their DKIM status.

Get Tags

Tool to retrieve all custom tags/labels for contact segmentation.

Get Template

Tool to retrieve detailed information about a specific email template by its ID.

Get Templates

Tool to retrieve list of all templates with full content including body.

Import Contacts (Bulk)

Tool to bulk import contacts to UniSender with maximum 500 contacts per call.

Check if Contact is in Lists

Tool to check if a contact exists in specified mailing lists based on and/or conditions.

List Messages

Tool to list all messages without body and attachments.

List Templates

Tool to list email templates without body content.

Subscribe Contact to Lists

Tool to add contacts to one or multiple mailing lists with optional tags and field values.

Unsubscribe Contact

Tool to unsubscribe contacts from mailing lists in UniSender.

Update Email Template

Tool to update an existing email template for mass campaigns.

Update Field

Tool to modify parameters of an existing custom field in UniSender.

Update List

Tool to update the parameters of an existing contact list in UniSender.

Update Subscriber Note

Tool to update the content of an existing subscriber note in UniSender.

FAQ

Frequently asked questions

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

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

Start with Unisender.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Unisender tool your agent needs.Free to start.

Start building