# How to integrate Unione MCP with Atomic Agent ```json { "title": "How to integrate Unione MCP with Atomic Agent", "toolkit": "Unione", "toolkit_slug": "unione", "framework": "Atomic Agent", "framework_slug": "atomic-agent", "url": "https://composio.dev/toolkits/unione/framework/atomic-agent", "markdown_url": "https://composio.dev/toolkits/unione/framework/atomic-agent.md", "updated_at": "2026-08-11T13:15:56.148Z" } ``` ## 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 Unione. 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 Unione account. See the [Atomic Agent documentation](https://atomicagent.io/docs/?cta_placement=atomic-agent-docs) for installation instructions. ## Also integrate Unione with - [OpenAI Agents SDK](https://composio.dev/toolkits/unione/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/unione/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/unione/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/unione/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/unione/framework/codex) - [OpenClaw](https://composio.dev/toolkits/unione/framework/openclaw) - [Hermes](https://composio.dev/toolkits/unione/framework/hermes-agent) - [Google ADK](https://composio.dev/toolkits/unione/framework/google-adk) - [LangChain](https://composio.dev/toolkits/unione/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/unione/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/unione/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/unione/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/unione/framework/crew-ai) - [Pydantic AI](https://composio.dev/toolkits/unione/framework/pydantic-ai) - [AutoGen](https://composio.dev/toolkits/unione/framework/autogen) ## TL;DR ### How Atomic Agent connects to Unione 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 Unione to Atomic Agent ### Connect Unione to Atomic Agent - Sign up or sign in to the [Composio dashboard](https://dashboard.composio.dev/?cta_placement=atomic-agent-api-key). Copy your API key. - 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. - Ask Atomic Agent to do something in Unione. It searches Composio for the right tool. - On first use, open the sign-in link returned in the chat. Connect your Unione 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 Unione MCP server, and what's possible with it? The Unione MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Unione account. It provides structured and secure access to your Unione email delivery service, so your agent can send transactional or marketing emails, manage sending domains, monitor delivery events, check account balance, and automate email operations on your behalf. - Automated email sending and scheduling: Have your agent send transactional or marketing emails and even schedule deliveries right from your Unione account. - Domain verification and management: Easily manage sender domains, trigger domain verifications, and handle DNS/DKIM checks to keep your emails deliverable. - Event monitoring and export: Let your agent fetch specific email events, retrieve delivery metrics, or export comprehensive email event logs for auditing and analytics. - Account balance and plan checks: Quickly access your current email balance and subscription plan details, ensuring you stay within your sending limits. - Email job and pricing insights: Retrieve detailed information about specific email jobs and get up-to-date pricing for cost management before sending campaigns. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `UNIONE_DELETE_EVENT_DUMP` | Delete Event Dump | Tool to delete an event dump file and remove it from the queue or storage. Use when you need to clean up an existing event dump by its dump_id. | | `UNIONE_DELETE_TEMPLATE` | Delete Template | Tool to delete a template by ID. Use when you need to permanently remove a template from the account. | | `UNIONE_DELETE_WEBHOOK` | Delete Webhook | Tool to delete a webhook event notification handler by its URL. Use when you need to stop receiving callback notifications for a specific webhook. | | `UNIONE_EMAIL_BALANCE` | UniOne Email Balance | Tool to retrieve current account balance. Use when you need to check your email usage and limits before sending large campaigns. | | `UNIONE_EMAIL_CANCEL` | Cancel Scheduled Email | Tool to cancel a scheduled transactional email by its job ID. Use when you need to stop a pending email send before it's dispatched. | | `UNIONE_EMAIL_DOMAIN` | UniOne Email Domain Management | Tool to manage sender domains in UniOne. Use when you need DNS records for verification, trigger verification or DKIM checks, list domains, or delete a domain. | | `UNIONE_EMAIL_EVENT_GET` | Get Email Event | Tool to retrieve details of a specific email event by its ID. Use when you need event information for auditing or diagnostics. | | `UNIONE_EMAIL_GET` | Get Email Send Job | Tool to retrieve detailed information about a specific email send job. Use when you need its delivery metrics and history. | | `UNIONE_EMAIL_LIST` | UniOne Email List (Export) | Tool to export email events within a specified time frame. It creates an asynchronous event dump which can later be downloaded and parsed using UNIONE_EVENT_DUMP_GET. | | `UNIONE_EMAIL_RESEND` | Resend Sent Email | Tool to resend a previously sent email by its job ID. Use when you need to trigger a resend of an email that has already been sent and you have the original job ID. | | `UNIONE_EMAIL_RESUBSCRIBE` | UniOne Email Resubscribe | Tool to resubscribe a recipient who previously unsubscribed. Use when you need to restore a user's subscription status after they opt in again. | | `UNIONE_EMAIL_RESUME` | Resume Paused Email | Tool to resume a paused transactional email by its job ID. Use when you need to restart a paused pending email send. | | `UNIONE_EMAIL_SMTP` | UniOne Email SMTP Configuration | Tool to retrieve SMTP server details and credentials. Use when you need to configure your mail client or library for SMTP sending. | | `UNIONE_EMAIL_STATISTICS` | UniOne Email Statistics | Tool to retrieve email sending statistics over a specified time range. This action uses UniOne's event-dump aggregate API under the hood to compute daily statistics. | | `UNIONE_EMAIL_UNSUBSCRIBE` | UniOne Email Unsubscribe | Tool to unsubscribe an email from future emails. Use when you need to stop all further transactional emails. | | `UNIONE_EMAIL_VALIDATE_BATCH` | Batch Email Validation | Tool to validate multiple email addresses in a batch. Use when you need to verify deliverability for a list of emails at once. | | `UNIONE_EMAIL_VALIDATE_DELETE` | Remove Email from Suppression List | Tool to remove an email from the suppression list. Use when you need to re-enable sending emails to an address that was previously unsubscribed or suppressed. | | `UNIONE_EMAIL_VALIDATE_RETRY` | Retry Email Validation | Tool to retry an email validation request. Updated to re-run validation via the official single validation endpoint using the provided email address. | | `UNIONE_EMAIL_WEBHOOK_TYPES` | UniOne Email Webhook Types | Tool to retrieve supported email webhook event types. Use when configuring your webhook callbacks. | | `UNIONE_EVENT_DUMP_CREATE` | Create Event Dump | Tool to create an asynchronous CSV event dump. Use when you need to export transactional email events for a specified time window. | | `UNIONE_EVENT_DUMP_LIST` | UniOne Event Dump List | Tool to retrieve the full list of event dumps. Use when you need to view all existing event-dump tasks. | | `UNIONE_GET_EVENT_DUMP` | Get Event Dump | Tool to retrieve the status and download URLs of an event dump. Use when you need to check if a dump is ready and get its files. | | `UNIONE_GET_SUPPRESSION` | Get Email Suppression Details | Tool to check if an email is suppressed and retrieve the reason and date. Use when verifying why an email cannot receive messages. | | `UNIONE_GET_TEMPLATE` | Get Template | Tool to get template properties by ID. Use when you need to retrieve the full template configuration and content for a specific template. | | `UNIONE_GET_WEBHOOK` | Get Webhook Configuration | Tool to retrieve webhook configuration by its URL. Use when you need to check the current settings of an event notification handler. | | `UNIONE_SCHEDULE_EMAIL` | Schedule Email | Tool to schedule a transactional email up to 24 hours ahead. Use when you need to send an email at a specific future time. | | `UNIONE_SUPPRESSION_LIST` | Suppression List | Tool to return the suppression list since a given date. Use when auditing bounced, unsubscribed, or blocked recipients. | | `UNIONE_TAG_DELETE` | Delete Tag | Tool to delete a specific tag. Use when you have confirmed the tag ID you wish to remove. | | `UNIONE_TAG_LIST` | UniOne Tag List | Tool to retrieve all user-defined tags. Use when you need to fetch the full list of tags after authentication. | | `UNIONE_TEMPLATE_LIST` | UniOne Template List | Tool to list email templates. Use when you need to retrieve available templates for transactional emails. | | `UNIONE_TEMPLATE_SET` | Set Template | Tool to set or update an email template. Use when you need to create or modify transactional email templates before sending messages. | | `UNIONE_WEBHOOK_SET` | Set Webhook | Tool to set or edit a webhook event notification handler. Use when you need to configure your webhook for event callbacks. | ## Supported Triggers None listed. ## 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](/pricing) for the current limits that apply to your connection. ## Complete Code None listed. ## Conclusion ### Use Unione from Atomic Agent With your account connected, ask Atomic Agent to work with Unione in natural language. You can connect more apps through the same Composio integration as you need them. Visit the [Atomic Agent website](https://atomicagent.io/?cta_placement=atomic-agent-site) or inspect the [Atomic Agent source code](https://github.com/AtomicBot-ai/atomic-agent?cta_placement=atomic-agent-repo). ## How to build Unione MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/unione/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/unione/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/unione/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/unione/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/unione/framework/codex) - [OpenClaw](https://composio.dev/toolkits/unione/framework/openclaw) - [Hermes](https://composio.dev/toolkits/unione/framework/hermes-agent) - [Google ADK](https://composio.dev/toolkits/unione/framework/google-adk) - [LangChain](https://composio.dev/toolkits/unione/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/unione/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/unione/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/unione/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/unione/framework/crew-ai) - [Pydantic AI](https://composio.dev/toolkits/unione/framework/pydantic-ai) - [AutoGen](https://composio.dev/toolkits/unione/framework/autogen) ## Related Toolkits - [Reddit](https://composio.dev/toolkits/reddit) - Reddit is a social news platform with thriving user-driven communities (subreddits). It's the go-to place for discussion, content sharing, and viral marketing. - [Facebook](https://composio.dev/toolkits/facebook) - Facebook is a social media and advertising platform for businesses and creators. It helps you connect, share, and manage content across your public Facebook Pages. - [Linkedin](https://composio.dev/toolkits/linkedin) - LinkedIn is a professional networking platform for connecting, sharing content, and engaging with business opportunities. It's the go-to place for building your professional brand and unlocking new career connections. - [Active campaign](https://composio.dev/toolkits/active_campaign) - ActiveCampaign is a marketing automation and CRM platform for managing email campaigns, sales pipelines, and customer segmentation. It helps businesses engage customers and drive growth through smart automation and targeted outreach. - [ActiveTrail](https://composio.dev/toolkits/active_trail) - ActiveTrail is a user-friendly email marketing and automation platform. It helps you reach subscribers and automate campaigns with ease. - [Adobe Marketing Agent MCP](https://composio.dev/toolkits/adobe_marketing_agent_mcp) - Adobe Marketing Agent MCP is Adobe's hosted MCP service that exposes marketing context, preferences, and agent capabilities. Use it to provide agents with campaign, audience, and analytics context via a managed integration. - [Ahrefs](https://composio.dev/toolkits/ahrefs) - Ahrefs is an SEO and marketing platform for site audits, keyword research, and competitor insights. It helps you improve search rankings and drive organic traffic. - [AimTell](https://composio.dev/toolkits/aimtell) - AimTell is a web push notification platform for managing websites, subscribers, campaigns, segments, and delivery analytics. Use it to send targeted browser notifications and measure engagement across your web push campaigns. - [Amcards](https://composio.dev/toolkits/amcards) - AMCards lets you create and mail personalized greeting cards online. Build stronger customer relationships with easy, automated card campaigns. - [Beamer](https://composio.dev/toolkits/beamer) - Beamer is a news and changelog platform for in-app announcements and feature updates. It helps companies boost user engagement by sharing news where users are most active. - [Beehiiv](https://composio.dev/toolkits/beehiiv) - Beehiiv is a newsletter platform for creating and managing publications and subscribers. It helps grow audience engagement and monetize your mailing list. - [Benchmark email](https://composio.dev/toolkits/benchmark_email) - Benchmark Email is a platform for creating, sending, and tracking email campaigns. It's built to help you engage audiences and analyze results—all in one place. - [Bigmailer](https://composio.dev/toolkits/bigmailer) - BigMailer is an email marketing platform for managing multiple brands with white-labeling and automation. It helps teams streamline campaigns and simplify integration with Amazon SES. - [Bitly](https://composio.dev/toolkits/bitly) - Bitly is a link management platform for shortening, customizing, sharing, and tracking links and QR codes. It helps teams create branded links and measure engagement across campaigns. - [BlueFox Email](https://composio.dev/toolkits/bluefox_email) - BlueFox Email is an email API for managing contacts, subscriber lists, and sending transactional and triggered messages. Use it to reliably send transactional and triggered emails and manage subscribers at scale. - [Brandfetch](https://composio.dev/toolkits/brandfetch) - Brandfetch is an API that delivers company logos, colors, and visual branding assets. It helps marketers and developers keep brand visuals consistent everywhere. - [Braze](https://composio.dev/toolkits/braze) - Braze is a customer engagement platform for managing user data, messaging, campaigns, and analytics. Use it to deliver targeted, multi-channel messaging and analyze campaign performance. - [Brevo](https://composio.dev/toolkits/brevo) - Brevo is an all-in-one email and SMS marketing platform for transactional messaging, automation, and CRM. It helps businesses engage customers and streamline communications through powerful campaign tools. - [Buffer](https://composio.dev/toolkits/buffer) - Buffer is a social media management platform for planning, creating, scheduling, and publishing posts across connected channels. It helps teams keep content organized and publish consistently without jumping between social apps. - [BulkPublish](https://composio.dev/toolkits/bulkpublish) - BulkPublish is a social media publishing platform for managing scheduled content across multiple channels. It helps teams plan campaigns, publish consistently, and track performance in one place. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Unione MCP? With a standalone Unione MCP server, the agents and LLMs can only access a fixed set of Unione tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Unione and many other apps based on the task at hand, all through a single MCP endpoint. ### Can I use Tool Router MCP with Atomic Agent? 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 Unione tools. ### Can I manage the permissions and scopes for Unione while using Tool Router? Yes, absolutely. You can configure which Unione 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 Unione data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)