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How to connect Omnisend to Claude

Connect Claude Web, Desktop and Cowork to Omnisend MCP. Add new subscribers from latest signups, update contact email preferences in bulk, and more using natural language, with authentication handled for you.

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Omnisend is a marketing automation platform for ecommerce, specializing in email and SMS campaigns. It helps online businesses engage customers and boost sales with targeted, automated messaging.

43 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Omnisend account to Claude via Composio Connect, enabling it to add new subscribers from latest signups, update contact email preferences in bulk, list all products for upcoming campaign, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate Omnisend with

Claude CodeOpenAI Agents SDKClaude Agent SDKCodexOpenClawHermesAtomic AgentGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAIPydantic AIAutoGen

Connecting Omnisend to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your Omnisend account

Back in Claude, ask it to connect to Omnisend or give it any Omnisend-related task.

For example, ask Claude to:

  • "Add new subscribers from latest signups"
  • "Update contact email preferences in bulk"
  • "List all products for upcoming campaign"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your Omnisend account is ready to use.

What is the Omnisend Claude Connector, 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.

Troubleshooting

1. Why does Claude not use the Composio connector for Omnisend?

The connector can show as connected, but Claude must use it in each Omnisend conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Omnisend again.

2. Why does Claude show an MCP server error before Omnisend connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Omnisend.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Omnisend.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Omnisend authorization link not work?

The Composio connector is one server. Your Omnisend account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Omnisend connection.
  • Composio creates a fresh Omnisend authorization link.
  • Open that link in your browser and finish the Omnisend sign-in.

4. Why do Omnisend actions fail after they worked before?

The Omnisend connection can expire or lose permission.

  • Ask Claude to inspect the Omnisend connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Omnisend account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Omnisend.
  • If the action still fails with a permission error, check that the connected account has that permission in Omnisend itself.

5. How do I switch to a different Omnisend account?

Claude can manage the Omnisend connection for you.

  • Ask Claude to disconnect or delete the current Omnisend account.
  • Ask Claude to connect Omnisend again.
  • Open the new Composio authorization link for Omnisend.
  • Sign in with the other Omnisend account in the browser.
  • After the account connects, ask Claude to retry the Omnisend task.

6. Why is my Omnisend connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Omnisend connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Omnisend tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Omnisend.
TOOLS

Supported Tools

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

Add Cart Product

Tool to add a product to a cart in Omnisend (v3 API).

Create Batch

Tool to create a new batch operation for multiple items.

Create Cart

Tool to create a new shopping cart in Omnisend.

Create Category

Tool to create a new category in Omnisend.

Create Order

Tool to create a new order in Omnisend v3 API.

Create or Update Contact

Tool to create or update a contact in Omnisend.

Create Product

Tool to create a new product in the Omnisend product catalog.

Create Product Category

Tool to create a new product category in the Omnisend catalog.

Delete Cart

Tool to delete a cart from Omnisend by its ID (v3 API).

Delete Category

Tool to remove a category from Omnisend by its ID.

Delete Order

Tool to delete an order from Omnisend by its ID.

Delete Product

Tool to remove a product from Omnisend by its ID.

Delete Product Category

Tool to remove a product category from Omnisend by its ID.

Get Batches

Tool to retrieve a list of batch operations.

Get Batch Information

Tool to retrieve information about a specific batch by ID.

Get Batch Item

Tool to retrieve a specific item within a batch by batchID and itemID.

Get Batch Items

Tool to retrieve processed items of a specific batch by ID.

Get Brand

Tool to retrieve information about the current authenticated brand.

Get Cart

Tool to retrieve a specific cart by ID from Omnisend v3 API.

Get Category

Tool to retrieve details of a specific category by ID.

Get Contact

Tool to retrieve details of a single contact by ID.

Get Order

Tool to retrieve details of a specific order by ID.

Get Product

Tool to retrieve details of a specific product by ID from Omnisend.

Get Product Category

Tool to retrieve a specific product category by ID.

List Campaigns

Tool to retrieve a paginated list of campaigns with optional filtering by status and type.

List Carts

Tool to retrieve a paginated list of carts with optional filtering.

List Categories

Tool to retrieve a paginated list of product categories.

List Contacts

Tool to retrieve a paginated list of contacts with optional filtering.

List Events

Tool to retrieve all custom events created in Omnisend app.

List Product Categories

Tool to retrieve a paginated list of product categories from the Omnisend catalog.

List Products

Tool to retrieve a paginated list of products.

Remove Cart Product

Tool to remove a product from a cart in Omnisend.

Replace Cart

Tool to replace an existing cart in Omnisend using the v3 API.

Replace Cart Product

Tool to replace a product in a cart using Omnisend v3 API.

Replace Category

Tool to replace a category's title by ID.

Replace Order

Tool to completely replace an existing order in Omnisend.

Replace Product

Tool to replace an existing product in the Omnisend catalog.

Send Event

Tool to send a customer event to Omnisend.

Update Cart

Tool to partially update a cart in Omnisend (v3 API).

Update Cart Product

Tool to update a product in a cart (v3 API).

Update Contact

Tool to update fields of an existing contact by ID.

Update Order Status

Tool to partially update an order status in Omnisend (v3 API).

Update Product Category

Tool to update an existing product category title in Omnisend.

FRAMEWORKS

How to build Omnisend MCP Agent with another framework

Claude Code logo

Claude Code

Use Omnisend MCP with Claude Code

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Omnisend MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Omnisend MCP with Claude Agent SDK

Codex logo

Codex

Use Omnisend MCP with Codex

OpenClaw logo

OpenClaw

Use Omnisend MCP with OpenClaw

Hermes logo

Hermes

Use Omnisend MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Omnisend MCP with Atomic Agent

Google ADK logo

Google ADK

Use Omnisend MCP with Google ADK

LangChain logo

LangChain

Use Omnisend MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Omnisend MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Omnisend MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Omnisend MCP with LlamaIndex

CrewAI logo

CrewAI

Use Omnisend MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Omnisend MCP with Pydantic AI

AutoGen logo

AutoGen

Use Omnisend MCP with AutoGen

FAQ

Frequently asked questions

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.

Yes, you can. Claude Cowork 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.

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.

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.

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