# How to integrate Omnisend MCP with Atomic Agent ```json { "title": "How to integrate Omnisend MCP with Atomic Agent", "toolkit": "Omnisend", "toolkit_slug": "omnisend", "framework": "Atomic Agent", "framework_slug": "atomic-agent", "url": "https://composio.dev/toolkits/omnisend/framework/atomic-agent", "markdown_url": "https://composio.dev/toolkits/omnisend/framework/atomic-agent.md", "updated_at": "2026-08-11T13:12:47.052Z" } ``` ## 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 Omnisend. 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 Omnisend account. See the [Atomic Agent documentation](https://atomicagent.io/docs/?cta_placement=atomic-agent-docs) for installation instructions. ## Also integrate Omnisend with - [OpenAI Agents SDK](https://composio.dev/toolkits/omnisend/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/omnisend/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/omnisend/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/omnisend/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/omnisend/framework/codex) - [OpenClaw](https://composio.dev/toolkits/omnisend/framework/openclaw) - [Hermes](https://composio.dev/toolkits/omnisend/framework/hermes-agent) - [Google ADK](https://composio.dev/toolkits/omnisend/framework/google-adk) - [LangChain](https://composio.dev/toolkits/omnisend/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/omnisend/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/omnisend/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/omnisend/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/omnisend/framework/crew-ai) - [Pydantic AI](https://composio.dev/toolkits/omnisend/framework/pydantic-ai) - [AutoGen](https://composio.dev/toolkits/omnisend/framework/autogen) ## TL;DR ### How Atomic Agent connects to Omnisend 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 Omnisend to Atomic Agent ### Connect Omnisend 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 Omnisend. It searches Composio for the right tool. - On first use, open the sign-in link returned in the chat. Connect your Omnisend 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 Omnisend MCP server, and what's possible with it? The Omnisend MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Omnisend account. It provides structured and secure access to your ecommerce marketing data, so your agent can manage contacts, automate batch operations, update products, and streamline campaign preparation for your store. - Bulk contact and product management: Effortlessly create or update large sets of contacts or products in one go, perfect for onboarding new subscribers or syncing your catalog. - Individual contact handling: Retrieve, update, or enrich detailed contact profiles, making it easy for your agent to personalize outreach or manage subscriptions. - Batch job automation and tracking: Initiate batch operations and monitor their progress, status, and results to ensure smooth processing of large datasets. - Product catalog maintenance: List, review, or delete products directly from your Omnisend account, keeping your store's offerings up to date for campaigns. - Contact segmentation and filtering: Fetch paginated and filtered contact lists, enabling targeted marketing actions and smarter audience management. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `OMNISEND_ADD_CART_PRODUCT` | Add Cart Product | Tool to add a product to a cart in Omnisend (v3 API). Use when updating cart contents or tracking abandoned carts. | | `OMNISEND_CREATE_BATCH` | Create Batch | Tool to create a new batch operation for multiple items. Use when you need to process many records asynchronously in one call, e.g., bulk contacts, products, orders, or events. Use after preparing the items list to avoid rate limits. | | `OMNISEND_CREATE_CART` | Create Cart | Tool to create a new shopping cart in Omnisend. Use when tracking customer cart activity for abandoned cart campaigns. | | `OMNISEND_CREATE_CATEGORY` | Create Category | Tool to create a new category in Omnisend. Use when organizing products into categories. | | `OMNISEND_CREATE_ORDER` | Create Order | Tool to create a new order in Omnisend v3 API. Use when recording a customer purchase or order transaction. | | `OMNISEND_CREATE_OR_UPDATE_CONTACT` | Create or Update Contact | Tool to create or update a contact in Omnisend. Use after collecting subscriber details. | | `OMNISEND_CREATE_PRODUCT` | Create Product | Tool to create a new product in the Omnisend product catalog. Use when adding products for email campaigns or syncing inventory. | | `OMNISEND_CREATE_PRODUCT_CATEGORY` | Create Product Category | Tool to create a new product category in the Omnisend catalog. Use when organizing products into categories. | | `OMNISEND_DELETE_CART` | Delete Cart | Tool to delete a cart from Omnisend by its ID (v3 API). Use when you need to remove an abandoned or expired cart from the system. | | `OMNISEND_DELETE_CATEGORY` | Delete Category | Tool to remove a category from Omnisend by its ID. Use when you need to delete a category and ensure it is no longer available in your catalog. | | `OMNISEND_DELETE_ORDER` | Delete Order | Tool to delete an order from Omnisend by its ID. Use when you need to remove an order from the system. | | `OMNISEND_DELETE_PRODUCT` | Delete Product | Tool to remove a product from Omnisend by its ID. Use when you need to delete a product and ensure it is no longer available in your catalog. | | `OMNISEND_DELETE_PRODUCT_CATEGORY` | Delete Product Category | Tool to remove a product category from Omnisend by its ID. Use when you need to delete a product category from your catalog. | | `OMNISEND_GET_BATCHES` | Get Batches | Tool to retrieve a list of batch operations. Use after initiating a batch job to monitor its progress and results. | | `OMNISEND_GET_BATCH_INFORMATION` | Get Batch Information | Tool to retrieve information about a specific batch by ID. Use after submitting a batch when you need a detailed status and counts. | | `OMNISEND_GET_BATCH_ITEM` | Get Batch Item | Tool to retrieve a specific item within a batch by batchID and itemID. Use when you need to inspect the result of a single batch operation. | | `OMNISEND_GET_BATCH_ITEMS` | Get Batch Items | Tool to retrieve processed items of a specific batch by ID. Use when you need to inspect individual results of a batch operation after fetching batch details. | | `OMNISEND_GET_BRAND` | Get Brand | Tool to retrieve information about the current authenticated brand. Use when you need brand details like currency, platform, or website. | | `OMNISEND_GET_CART` | Get Cart | Tool to retrieve a specific cart by ID from Omnisend v3 API. Use when you need detailed cart information including products and customer contact details. | | `OMNISEND_GET_CATEGORY` | Get Category | Tool to retrieve details of a specific category by ID. Use when you need to fetch information about a category. | | `OMNISEND_GET_CONTACT` | Get Contact | Tool to retrieve details of a single contact by ID. Use when you already have a contactId and need the full profile. | | `OMNISEND_GET_ORDER` | Get Order | Tool to retrieve details of a specific order by ID. Use when you need order information including products, addresses, and payment details. | | `OMNISEND_GET_PRODUCT` | Get Product | Tool to retrieve details of a specific product by ID from Omnisend. Use when you need full product information including variants, pricing, and stock status. | | `OMNISEND_GET_PRODUCT_CATEGORY` | Get Product Category | Tool to retrieve a specific product category by ID. Use when you need details about a particular product category. | | `OMNISEND_LIST_CAMPAIGNS` | List Campaigns | Tool to retrieve a paginated list of campaigns with optional filtering by status and type. Use when you need to view or analyze campaign performance across multiple campaigns. | | `OMNISEND_LIST_CARTS` | List Carts | Tool to retrieve a paginated list of carts with optional filtering. Use when you need to fetch carts by date range, contact, or segment. | | `OMNISEND_LIST_CATEGORIES` | List Categories | Tool to retrieve a paginated list of product categories. Use when you need category IDs for product management or catalog organization. | | `OMNISEND_LIST_CONTACTS` | List Contacts | Tool to retrieve a paginated list of contacts with optional filtering. Use when you need to fetch contacts in batches and handle cursor pagination. | | `OMNISEND_LIST_EVENTS` | List Events | Tool to retrieve all custom events created in Omnisend app. Use when you need to view available event types for automation workflows or event tracking. | | `OMNISEND_LIST_PRODUCT_CATEGORIES` | List Product Categories | Tool to retrieve a paginated list of product categories from the Omnisend catalog. Use when fetching category data for product organization. | | `OMNISEND_LIST_PRODUCTS` | List Products | Tool to retrieve a paginated list of products. Use when syncing product catalog before campaign creation. | | `OMNISEND_REMOVE_CART_PRODUCT` | Remove Cart Product | Tool to remove a product from a cart in Omnisend. Use when you need to delete a specific product from a cart. | | `OMNISEND_REPLACE_CART` | Replace Cart | Tool to replace an existing cart in Omnisend using the v3 API. Use when you need to completely replace all cart data including products, pricing, and recovery URL. | | `OMNISEND_REPLACE_CART_PRODUCT` | Replace Cart Product | Tool to replace a product in a cart using Omnisend v3 API. Use when you need to update all details of a specific product in a cart. | | `OMNISEND_REPLACE_CATEGORY` | Replace Category | Tool to replace a category's title by ID. Use when you need to update an entire category resource. | | `OMNISEND_REPLACE_ORDER` | Replace Order | Tool to completely replace an existing order in Omnisend. Use when you need to update all order details at once, replacing the entire order record. | | `OMNISEND_REPLACE_PRODUCT` | Replace Product | Tool to replace an existing product in the Omnisend catalog. Use when you need to completely replace all product data with new information. | | `OMNISEND_SEND_EVENT` | Send Event | Tool to send a customer event to Omnisend. Events can trigger automations and track customer behavior. Use when you need to record customer interactions such as product views, cart actions, or custom events. | | `OMNISEND_UPDATE_CART` | Update Cart | Tool to partially update a cart in Omnisend (v3 API). Use when you need to modify cart details such as currency, total amount, recovery URL, or products. | | `OMNISEND_UPDATE_CART_PRODUCT` | Update Cart Product | Tool to update a product in a cart (v3 API). Use when you need to modify product details such as quantity, price, or other attributes for an existing cart item. | | `OMNISEND_UPDATE_CONTACT` | Update Contact | Tool to update fields of an existing contact by ID. Use after retrieving contact ID. PATCH https://api.omnisend.com/v3/contacts/{contactId} Example: UpdateContact(contactId="..., body={firstName: 'John'}) | | `OMNISEND_UPDATE_ORDER_STATUS` | Update Order Status | Tool to partially update an order status in Omnisend (v3 API). Use when you need to update shipping details, payment status, or fulfillment status of an existing order. | | `OMNISEND_UPDATE_PRODUCT_CATEGORY` | Update Product Category | Tool to update an existing product category title in Omnisend. Use when you need to modify a category's name. | ## 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 Omnisend from Atomic Agent With your account connected, ask Atomic Agent to work with Omnisend 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 Omnisend MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/omnisend/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/omnisend/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/omnisend/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/omnisend/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/omnisend/framework/codex) - [OpenClaw](https://composio.dev/toolkits/omnisend/framework/openclaw) - [Hermes](https://composio.dev/toolkits/omnisend/framework/hermes-agent) - [Google ADK](https://composio.dev/toolkits/omnisend/framework/google-adk) - [LangChain](https://composio.dev/toolkits/omnisend/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/omnisend/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/omnisend/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/omnisend/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/omnisend/framework/crew-ai) - [Pydantic AI](https://composio.dev/toolkits/omnisend/framework/pydantic-ai) - [AutoGen](https://composio.dev/toolkits/omnisend/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 Omnisend MCP? With a standalone Omnisend MCP server, the agents and LLMs can only access a fixed set of Omnisend tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Omnisend 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 Omnisend tools. ### Can I manage the permissions and scopes for Omnisend while using Tool Router? Yes, absolutely. You can configure which Omnisend 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 Omnisend data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)