# How to integrate Simplero MCP with Atomic Agent ```json { "title": "How to integrate Simplero MCP with Atomic Agent", "toolkit": "Simplero", "toolkit_slug": "simplero", "framework": "Atomic Agent", "framework_slug": "atomic-agent", "url": "https://composio.dev/toolkits/simplero/framework/atomic-agent", "markdown_url": "https://composio.dev/toolkits/simplero/framework/atomic-agent.md", "updated_at": "2026-08-11T13:05:16.433Z" } ``` ## 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 Simplero. 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 Simplero account. See the [Atomic Agent documentation](https://atomicagent.io/docs/?cta_placement=atomic-agent-docs) for installation instructions. ## Also integrate Simplero with - [OpenAI Agents SDK](https://composio.dev/toolkits/simplero/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/simplero/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/simplero/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/simplero/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/simplero/framework/codex) - [OpenClaw](https://composio.dev/toolkits/simplero/framework/openclaw) - [Hermes](https://composio.dev/toolkits/simplero/framework/hermes-agent) - [Google ADK](https://composio.dev/toolkits/simplero/framework/google-adk) - [LangChain](https://composio.dev/toolkits/simplero/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/simplero/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/simplero/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/simplero/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/simplero/framework/crew-ai) - [Pydantic AI](https://composio.dev/toolkits/simplero/framework/pydantic-ai) - [AutoGen](https://composio.dev/toolkits/simplero/framework/autogen) ## TL;DR ### How Atomic Agent connects to Simplero 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 Simplero to Atomic Agent ### Connect Simplero 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 Simplero. It searches Composio for the right tool. - On first use, open the sign-in link returned in the chat. Connect your Simplero 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 Simplero MCP server, and what's possible with it? The Simplero MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Simplero account. It provides structured and secure access so your agent can perform Simplero operations on your behalf. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `SIMPLERO_ADD_TAG_TO_CONTACT` | Add Tag to Contact | Tool to add a tag to a contact identified by email address. Use when you need to tag a contact for segmentation or tracking purposes. | | `SIMPLERO_BULK_SUBSCRIBE_TO_LIST` | Bulk Subscribe to List | Tool to add multiple subscribers to a list in a single asynchronous request (max 1,000 per request). Use when you need to bulk import subscribers into a list. Returns a token to track the operation status. | | `SIMPLERO_CREATE_OR_UPDATE_ADMINISTRATOR` | Create or Update Administrator | Tool to create a new administratorship or update an existing one with the same email. Use when you need to add a new administrator to Simplero or update their role and permissions. | | `SIMPLERO_CREATE_OR_UPDATE_CONTACT` | Create or Update Contact | Tool to create a new contact or update an existing contact with the same email. Use when you need to add a new contact to Simplero or update their information. | | `SIMPLERO_FIND_CONTACT_BY_EMAIL` | Find Contact By Email | Tool to find and retrieve a contact by email address. Use when you need to look up contact details using an email address. | | `SIMPLERO_FIND_SUBSCRIPTION_BY_EMAIL` | Find Subscription By Email | Tool to find subscriptions for a specific list by email address. Use when you need to search for subscriptions associated with an email in a particular list. | | `SIMPLERO_GET_ADMINISTRATOR_BY_ID` | Get Administrator By ID | Tool to retrieve a single administratorship by internal ID. Use when you need detailed information about a specific administrator including user, account, role, and permission details. | | `SIMPLERO_GET_ADMINISTRATORS` | Get Administrators | Tool to retrieve all administratorships for the account. Use when you need to get information about account administrators, their roles, and permissions. | | `SIMPLERO_GET_ADMIN_ROLES` | Get Admin Roles | Tool to retrieve all available admin roles for the account including custom roles. Use when you need to list all admin roles such as Co-Owner, Admin, Basic admin, Assistant, Support specialist, Affiliate manager, or custom roles saved on Skyrocket plan. | | `SIMPLERO_GET_ASYNC_REQUEST_STATUS` | Get Async Request Status | Tool to check the status of an asynchronous API request. Use when you need to monitor the progress of a previously initiated async operation using its token. | | `SIMPLERO_GET_CONTACT_BY_ID` | Get Contact By ID | Tool to retrieve a JSON representation of a contact by internal ID. Use when you need to fetch detailed information about a specific contact. Returns 404 if no contact exists with the provided ID. | | `SIMPLERO_GET_INVOICES` | Get Invoices | Tool to get invoice information with optional filtering by date and invoice number. Use when you need to retrieve invoices from Simplero. Returns 20 invoices per page ordered by invoice number. | | `SIMPLERO_GET_ALL_LISTS` | Get All Lists | Tool to retrieve all mailing lists configured in the account. Use when you need to view all available lists for managing subscriptions and email campaigns. | | `SIMPLERO_GET_PRODUCTS` | Get Products | Tool to list all products in the account. Use when you need to retrieve information about all available products including their pricing. | | `SIMPLERO_REMOVE_ADMINISTRATOR` | Remove Administrator | Tool to delete an administratorship by ID. Use when you need to remove an administrator relationship from the system. | | `SIMPLERO_REMOVE_TAG_FROM_CONTACT` | Remove Tag from Contact | Tool to remove a tag from a contact identified by email address. Use when you need to remove a specific tag from a contact's profile. | | `SIMPLERO_SUBSCRIBE_TO_LIST` | Subscribe to List | Tool to add a new subscriber to a specific mailing list. Use when you need to subscribe a contact with their email address to a list. | | `SIMPLERO_UNSUBSCRIBE_FROM_LIST` | Unsubscribe From List | Tool to unsubscribe a customer from a specific mailing list. Use when you need to remove a contact from a list by their email address. | | `SIMPLERO_UPDATE_CONTACT_CREDENTIALS` | Update Contact Credentials | Tool to update a contact's login credentials including email, first name, and last name. Use only with the consent of the contact. At least one identification parameter (email, id, or token) is required. | ## 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 Simplero from Atomic Agent With your account connected, ask Atomic Agent to work with Simplero 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 Simplero MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/simplero/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/simplero/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/simplero/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/simplero/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/simplero/framework/codex) - [OpenClaw](https://composio.dev/toolkits/simplero/framework/openclaw) - [Hermes](https://composio.dev/toolkits/simplero/framework/hermes-agent) - [Google ADK](https://composio.dev/toolkits/simplero/framework/google-adk) - [LangChain](https://composio.dev/toolkits/simplero/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/simplero/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/simplero/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/simplero/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/simplero/framework/crew-ai) - [Pydantic AI](https://composio.dev/toolkits/simplero/framework/pydantic-ai) - [AutoGen](https://composio.dev/toolkits/simplero/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 Simplero MCP? With a standalone Simplero MCP server, the agents and LLMs can only access a fixed set of Simplero tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Simplero 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 Simplero tools. ### Can I manage the permissions and scopes for Simplero while using Tool Router? Yes, absolutely. You can configure which Simplero 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 Simplero data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)