# How to integrate Emailoctopus MCP with Claude Code ```json { "title": "How to integrate Emailoctopus MCP with Claude Code", "toolkit": "Emailoctopus", "toolkit_slug": "emailoctopus", "framework": "Claude Code", "framework_slug": "claude-code", "url": "https://composio.dev/toolkits/emailoctopus/framework/claude-code", "markdown_url": "https://composio.dev/toolkits/emailoctopus/framework/claude-code.md", "updated_at": "2026-05-12T10:10:16.645Z" } ``` ## Introduction Manage your Emailoctopus directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns. You can do this in two different ways: - Via [Composio Connect](https://dashboard.composio.dev/login?utm_source=toolkits&utm_medium=framework_template&utm_campaign=claude-code&utm_content=composio_connect&next=%2F~%2Forg%2Fconnect%2Fclients%2Fclaude-code) - Direct and easiest approach - Via [Composio SDK](https://docs.composio.dev/docs?utm_source=toolkits&utm_medium=framework_template&utm_campaign=claude-code&utm_content=composio_sdk) - Programmatic approach with more control ## Also integrate Emailoctopus with - [OpenAI Agents SDK](https://composio.dev/toolkits/emailoctopus/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/emailoctopus/framework/claude-agents-sdk) - [Claude Cowork](https://composio.dev/toolkits/emailoctopus/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/emailoctopus/framework/codex) - [OpenClaw](https://composio.dev/toolkits/emailoctopus/framework/openclaw) - [Hermes](https://composio.dev/toolkits/emailoctopus/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/emailoctopus/framework/cli) - [Google ADK](https://composio.dev/toolkits/emailoctopus/framework/google-adk) - [LangChain](https://composio.dev/toolkits/emailoctopus/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/emailoctopus/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/emailoctopus/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/emailoctopus/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/emailoctopus/framework/crew-ai) ## TL;DR - Only one MCP URL to connect multiple apps with Claude Code with zero auth hassles. - Programmatic tool calling allows LLMs to write its code in a remote workbench to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling. - Handling Large tool responses out of LLM context to minimize context rot. - Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so LLMs aren't overwhelmed by tools you don't need. ## Connect Emailoctopus to Claude Code ### Connecting Emailoctopus to Claude Code using Composio 1. Add the Composio MCP to Claude ```bash claude mcp add --scope user --transport http composio https://connect.composio.dev/mcp ``` ## What is Claude Code? Claude Code is Anthropic's command line developer tool that lets you use Claude directly inside your terminal. Instead of switching between your editor, browser, and chat, you can stay in your project folder and ask Claude to help you build, debug, refactor, and understand code right where you're working. Key features include: - Terminal-Native Experience: Work with Claude directly in your command line without switching contexts - MCP Support: Built-in support for Model Context Protocol servers to extend Claude's capabilities - Project Context: Claude understands your project structure and can read, write, and modify files - Interactive Development: Ask questions, debug code, and get help in real-time while coding - Multi-Platform: Works on macOS, Linux, WSL, and Windows ## What is the Emailoctopus MCP server, and what's possible with it? The Emailoctopus MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Emailoctopus account. It provides structured and secure access to your subscriber lists, contacts, and campaigns, so your agent can perform actions like managing lists, adding contacts, launching campaigns, and handling unsubscriptions on your behalf. - Seamless contact management: Your agent can create new contacts, update details, or remove subscribers from your marketing lists in seconds. - Mailing list creation and organization: Effortlessly set up new mailing lists and keep your audience segmented for targeted campaigns. - Campaign insights and retrieval: Instantly access details about your recent email campaigns, including summaries and performance data. - Automated unsubscriptions and compliance: Quickly unsubscribe contacts or delete them to keep your lists clean and privacy-compliant. - Bulk list management: Retrieve and organize all mailing lists in your account, making it easy to scale and update your marketing efforts. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `EMAILOCTOPUS_CREATE_CONTACT` | Create Contact | This tool creates a new contact in EmailOctopus. The tool will add a contact to a specified list with the provided information. | | `EMAILOCTOPUS_CREATE_FIELD` | Create Field | Tool to create a new custom field on an EmailOctopus mailing list. Use when you need to add additional data fields beyond the default Email, First Name, and Last Name fields. | | `EMAILOCTOPUS_CREATE_LIST` | Create List | Creates a new mailing list in EmailOctopus for organizing and managing email contacts. The list is created with default fields (Email address, First name, Last name) and can be used to add contacts, send campaigns, and track subscriber engagement. | | `EMAILOCTOPUS_CREATE_TAG` | Create Tag | Tool to create a new tag on an EmailOctopus mailing list. Use when you need to add a new tag for contact segmentation and filtering purposes. | | `EMAILOCTOPUS_DELETE_CONTACT` | Delete Contact | Permanently deletes a contact from a specified EmailOctopus list. This action is irreversible - once deleted, the contact and all associated data will be removed from the list. Use this for list management, honoring deletion requests, and data privacy compliance (e.g., GDPR right to erasure). | | `EMAILOCTOPUS_DELETE_FIELD` | Delete Field | Permanently deletes a custom field from a specified EmailOctopus list. This action is irreversible - once deleted, the field and all associated data will be removed from the list. Use this for list customization and field management. | | `EMAILOCTOPUS_DELETE_LIST` | Delete List | This tool allows you to delete an existing mailing list from your EmailOctopus account. Once a list is deleted, it cannot be recovered, and all contacts within the list will be permanently removed. Note: Lists can only be deleted if no contacts within the list have received an email in the last 7 days. | | `EMAILOCTOPUS_DELETE_TAG` | Delete Tag | Tool to delete a tag from a mailing list in EmailOctopus. Use when you need to remove an existing tag that is no longer needed for contact organization or segmentation. | | `EMAILOCTOPUS_GET_ALL_LISTS` | Get All Lists | This tool retrieves all the mailing lists associated with the EmailOctopus account. | | `EMAILOCTOPUS_GET_CONTACT` | Get Contact | Tool to retrieve details of a specific contact from an EmailOctopus list. Use when you need to fetch contact information including email, fields, tags, and subscription status. | | `EMAILOCTOPUS_GET_LIST` | Get List | Retrieves details of a specific mailing list by ID. Use when you need to fetch list information, including its name, fields, tags, contact counts, and opt-in settings. | | `EMAILOCTOPUS_GET_RECENT_CAMPAIGNS` | Get Recent Campaigns | This tool retrieves a list of recent campaigns from the EmailOctopus account. | | `EMAILOCTOPUS_LIST_CONTACTS` | List Contacts | Tool to retrieve contacts from an EmailOctopus list. Returns a paginated list of contacts with optional filtering by tag, status, and date ranges. | | `EMAILOCTOPUS_LIST_TAGS` | List Tags | Tool to retrieve all tags from a mailing list. Use when you need to see what tags are available on a specific list for contact segmentation. | | `EMAILOCTOPUS_UNSUBSCRIBE_CONTACT` | Unsubscribe Contact | Unsubscribes a contact from an EmailOctopus mailing list. This tool updates the contact's subscription status to 'unsubscribed', which stops them from receiving future emails from the specified list. The contact record is preserved but marked as unsubscribed. | | `EMAILOCTOPUS_UPDATE_CONTACTS_BATCH` | Batch Update Contacts | Tool to update multiple contacts in an EmailOctopus list in a single batch operation. Use when you need to efficiently update multiple contacts at once with changes to their email, fields, status, or tags. | | `EMAILOCTOPUS_UPDATE_FIELD` | Update Field | Updates an existing custom field on an EmailOctopus list including its label, tag, type, and fallback value. Use this action to modify field properties or rename field tags. Note that changing the tag will affect how the field is referenced in email templates. | | `EMAILOCTOPUS_UPDATE_LIST` | Update List | Tool to update an existing mailing list's name in EmailOctopus. Use when you need to rename a list. | | `EMAILOCTOPUS_UPDATE_TAG` | Update Tag | Tool to update an existing tag on a mailing list. Use when you need to rename a tag. | | `EMAILOCTOPUS_UPSERT_CONTACT` | Create or Update Contact | Tool to create or update a contact in EmailOctopus. If the contact does not exist, it will be created. If the contact already exists, it will be updated. Use when you need to ensure a contact exists with specific information regardless of whether they're already in the list. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The Emailoctopus MCP server is an implementation of the Model Context Protocol that connects Claude Code (and other AI assistants like Claude and Cursor) directly to your Emailoctopus account. It provides structured and secure access so Claude can perform Emailoctopus operations on your behalf. With Composio's managed implementation, you don't have to create your own developer app. For production, if you're building an end product, we recommend using your own credentials. The managed server helps you prototype fast and go from 0-1 faster. ## Step-by-step Guide ### 1. Prerequisites Before starting, make sure you have: - Claude Pro, Max, or API billing enabled Anthropic account - Composio API Key - A Emailoctopus account - Basic knowledge of Python or TypeScript ### 1. Install Claude Code To install Claude Code, use one of the following methods based on your operating system: ```bash # macOS, Linux, WSL curl -fsSL https://claude.ai/install.sh | bash # Windows PowerShell irm https://claude.ai/install.ps1 | iex # Windows CMD curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd && del install.cmd ``` ### 2. Set up Claude Code Open a terminal, go to your project folder, and start Claude Code: - Claude Code will open in your terminal - Follow the prompts to sign in with your Anthropic account - Complete the authentication flow - Once authenticated, you can start using Claude Code ```bash cd your-project-folder claude ``` ### 3. Set up environment variables Create a .env file in your project root with the following variables: - COMPOSIO_API_KEY authenticates with Composio (get it from [Composio dashboard](https://dashboard.composio.dev/login?utm_source=toolkits&utm_medium=framework_template&utm_campaign=claude-code&utm_content=api_key&next=%2F~%2Forg%2Fconnect%2Fclients%2Fclaude-code)) - USER_ID identifies the user for session management (use any unique identifier) ```bash COMPOSIO_API_KEY=your_composio_api_key_here USER_ID=your_user_id_here ``` ### 4. Install Composio library No description provided. ```python pip install composio-core python-dotenv ``` ```typescript npm install @composio/core dotenv ``` ### 5. Generate Composio MCP URL No description provided. ```python import os from composio import Composio from dotenv import load_dotenv load_dotenv() COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY") USER_ID = os.getenv("USER_ID") composio_client = Composio(api_key=COMPOSIO_API_KEY) composio_session = composio_client.create( user_id=USER_ID, toolkits=["emailoctopus"], ) COMPOSIO_MCP_URL = composio_session.mcp.url print(f"MCP URL: {COMPOSIO_MCP_URL}") print(f"\nUse this command to add to Claude Code:") print(f'claude mcp add --transport http emailoctopus-composio "{COMPOSIO_MCP_URL}" --headers "X-API-Key:{COMPOSIO_API_KEY}"') ``` ```typescript import 'dotenv/config'; import { Composio } from '@composio/core'; const { COMPOSIO_API_KEY, USER_ID } = process.env; if (!COMPOSIO_API_KEY || !USER_ID) { throw new Error('COMPOSIO_API_KEY and USER_ID required in .env'); } const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY }); const composioSession = await composioClient.create(USER_ID, { toolkits: ['emailoctopus'], }); const composioMcpUrl = composioSession?.mcp.url; console.log(`MCP URL: ${composioMcpUrl}`); console.log(`\nUse this command to add to Claude Code:`); console.log(`claude mcp add --transport http emailoctopus-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`); ``` ### 6. Run the script and copy the MCP URL No description provided. ```python python generate_mcp_url.py ``` ```typescript node --loader ts-node/esm generate_mcp_url.ts # or if using tsx tsx generate_mcp_url.ts ``` ### 7. Add Emailoctopus MCP to Claude Code In your terminal, add the MCP server using the command from the previous step. The command format is: - claude mcp add registers a new MCP server with Claude Code - --transport http specifies that this is an HTTP-based MCP server - The server name (emailoctopus-composio) is how you'll reference it - The URL points to your Composio Tool Router session - --headers includes your Composio API key for authentication After running the command, close the current Claude Code session and start a new one for the changes to take effect. ```bash claude mcp add --transport http emailoctopus-composio "YOUR_MCP_URL_HERE" --headers "X-API-Key:YOUR_COMPOSIO_API_KEY" # Then restart Claude Code exit claude ``` ### 8. Verify the installation Check that your Emailoctopus MCP server is properly configured. - This command lists all MCP servers registered with Claude Code - You should see your emailoctopus-composio entry in the list - This confirms that Claude Code can now access Emailoctopus tools If everything is wired up, you should see your emailoctopus-composio entry listed: ```bash claude mcp list ``` ### 9. Authenticate Emailoctopus The first time you try to use Emailoctopus tools, you'll be prompted to authenticate. - Claude Code will detect that you need to authenticate with Emailoctopus - It will show you an authentication link - Open the link in your browser (or copy/paste it) - Complete the Emailoctopus authorization flow - Return to the terminal and start using Emailoctopus through Claude Code Once authenticated, you can ask Claude Code to perform Emailoctopus operations in natural language. For example: - "Add new subscribers to my newsletter list" - "Unsubscribe a user from marketing emails" - "List all recent email campaigns sent" ## Complete Code ```python import os from composio import Composio from dotenv import load_dotenv load_dotenv() COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY") USER_ID = os.getenv("USER_ID") composio_client = Composio(api_key=COMPOSIO_API_KEY) composio_session = composio_client.create( user_id=USER_ID, toolkits=["emailoctopus"], ) COMPOSIO_MCP_URL = composio_session.mcp.url print(f"MCP URL: {COMPOSIO_MCP_URL}") print(f"\nUse this command to add to Claude Code:") print(f'claude mcp add --transport http emailoctopus-composio "{COMPOSIO_MCP_URL}" --headers "X-API-Key:{COMPOSIO_API_KEY}"') ``` ```typescript import 'dotenv/config'; import { Composio } from '@composio/core'; const { COMPOSIO_API_KEY, USER_ID } = process.env; if (!COMPOSIO_API_KEY || !USER_ID) { throw new Error('COMPOSIO_API_KEY and USER_ID required in .env'); } const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY }); const composioSession = await composioClient.create(USER_ID, { toolkits: ['emailoctopus'], }); const composioMcpUrl = composioSession?.mcp.url; console.log(`MCP URL: ${composioMcpUrl}`); console.log(`\nUse this command to add to Claude Code:`); console.log(`claude mcp add --transport http emailoctopus-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`); ``` ## Conclusion You've successfully integrated Emailoctopus with Claude Code using Composio's MCP server. Now you can interact with Emailoctopus directly from your terminal using natural language commands. Key features of this setup: - Terminal-native experience without switching contexts - Natural language commands for Emailoctopus operations - Secure authentication through Composio's managed MCP - Tool Router for dynamic tool discovery and execution Next steps: - Try asking Claude Code to perform various Emailoctopus operations - Add more toolkits to your Tool Router session for multi-app workflows - Integrate this setup into your development workflow for increased productivity You can extend this by adding more toolkits, implementing custom workflows, or building automation scripts that leverage Claude Code's capabilities. ## How to build Emailoctopus MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/emailoctopus/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/emailoctopus/framework/claude-agents-sdk) - [Claude Cowork](https://composio.dev/toolkits/emailoctopus/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/emailoctopus/framework/codex) - [OpenClaw](https://composio.dev/toolkits/emailoctopus/framework/openclaw) - [Hermes](https://composio.dev/toolkits/emailoctopus/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/emailoctopus/framework/cli) - [Google ADK](https://composio.dev/toolkits/emailoctopus/framework/google-adk) - [LangChain](https://composio.dev/toolkits/emailoctopus/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/emailoctopus/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/emailoctopus/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/emailoctopus/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/emailoctopus/framework/crew-ai) ## 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. - [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. - [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. - [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. - [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. - [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. - [Campayn](https://composio.dev/toolkits/campayn) - Campayn is an email marketing platform for creating, sending, and managing campaigns. It helps businesses engage contacts and grow audiences with easy-to-use tools. - [Cardly](https://composio.dev/toolkits/cardly) - Cardly is a platform for creating and sending personalized direct mail to customers. It helps businesses break through the digital clutter by getting real engagement via physical mailboxes. - [ClickSend](https://composio.dev/toolkits/clicksend) - ClickSend is a cloud-based SMS and email marketing platform for businesses. It streamlines communication by enabling quick message delivery and contact management. - [Crustdata](https://composio.dev/toolkits/crustdata) - CrustData is an AI-powered data intelligence platform for real-time company and people data. It helps B2B sales teams, AI SDRs, and investors react to live business signals. - [Curated](https://composio.dev/toolkits/curated) - Curated is a platform for collecting, curating, and publishing newsletters. It streamlines content aggregation and distribution for creators and teams. - [Customerio](https://composio.dev/toolkits/customerio) - Customer.io is a customer engagement platform for targeted messaging across email, SMS, and push. Easily automate, segment, and track communications with your audience. - [Cutt ly](https://composio.dev/toolkits/cutt_ly) - Cutt.ly is a URL shortening service for managing and analyzing links. Streamline your workflows with quick, trackable, and branded short URLs. - [Demio](https://composio.dev/toolkits/demio) - Demio is webinar software built for marketers, offering both live and automated sessions with interactive features. It helps teams engage audiences and optimize lead generation through detailed analytics. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Emailoctopus MCP? With a standalone Emailoctopus MCP server, the agents and LLMs can only access a fixed set of Emailoctopus tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Emailoctopus and many other apps based on the task at hand, all through a single MCP endpoint. ### Can I use Tool Router MCP with Claude Code? Yes, you can. Claude Code 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 Emailoctopus tools. ### Can I manage the permissions and scopes for Emailoctopus while using Tool Router? Yes, absolutely. You can configure which Emailoctopus 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 Emailoctopus data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)