# How to integrate Addresszen MCP with Atomic Agent ```json { "title": "How to integrate Addresszen MCP with Atomic Agent", "toolkit": "Addresszen", "toolkit_slug": "addresszen", "framework": "Atomic Agent", "framework_slug": "atomic-agent", "url": "https://composio.dev/toolkits/addresszen/framework/atomic-agent", "markdown_url": "https://composio.dev/toolkits/addresszen/framework/atomic-agent.md", "updated_at": "2026-08-11T13:05:48.849Z" } ``` ## 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 Addresszen. 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 Addresszen account. See the [Atomic Agent documentation](https://atomicagent.io/docs/?cta_placement=atomic-agent-docs) for installation instructions. ## Also integrate Addresszen with - [OpenAI Agents SDK](https://composio.dev/toolkits/addresszen/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/addresszen/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/addresszen/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/addresszen/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/addresszen/framework/codex) - [OpenClaw](https://composio.dev/toolkits/addresszen/framework/openclaw) - [Hermes](https://composio.dev/toolkits/addresszen/framework/hermes-agent) - [Google ADK](https://composio.dev/toolkits/addresszen/framework/google-adk) - [LangChain](https://composio.dev/toolkits/addresszen/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/addresszen/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/addresszen/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/addresszen/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/addresszen/framework/crew-ai) - [Pydantic AI](https://composio.dev/toolkits/addresszen/framework/pydantic-ai) - [AutoGen](https://composio.dev/toolkits/addresszen/framework/autogen) ## TL;DR ### How Atomic Agent connects to Addresszen 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 Addresszen to Atomic Agent ### Connect Addresszen 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 Addresszen. It searches Composio for the right tool. - On first use, open the sign-in link returned in the chat. Connect your Addresszen 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 Addresszen MCP server, and what's possible with it? The Addresszen MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Addresszen account. It provides structured and secure access to real-time address autocomplete and verification services, so your agent can suggest accurate addresses, validate API keys, and resolve complete address details on your behalf. - Instant address autocomplete and suggestions: Enable your agent to quickly provide users with accurate address suggestions as they type, reducing input errors and saving time. - Address resolution and formatting: Let your agent resolve address suggestion IDs into full, deliverable US-format addresses for shipping, billing, or form completion. - API key validation and monitoring: Easily verify whether your Addresszen API key is active and usable before making further requests, ensuring seamless integrations. - Seamless address validation in workflows: Automate the process of checking and completing addresses, so your agent can support onboarding, checkout, or CRM data entry without manual review. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `ADDRESSZEN_KEY_AVAILABILITY` | Key Availability | Tool to get public information on an API key, including whether it is currently usable. Use when you need to verify that a key is valid and available before making further API requests. | | `ADDRESSZEN_RESOLVE_ADDRESS_USA` | Resolve Address USA | Tool to resolve an address autocompletion by its address ID and return the full address in US format. Use after obtaining an address suggestion ID from the autocomplete endpoint. | ## 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 Addresszen from Atomic Agent With your account connected, ask Atomic Agent to work with Addresszen 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 Addresszen MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/addresszen/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/addresszen/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/addresszen/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/addresszen/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/addresszen/framework/codex) - [OpenClaw](https://composio.dev/toolkits/addresszen/framework/openclaw) - [Hermes](https://composio.dev/toolkits/addresszen/framework/hermes-agent) - [Google ADK](https://composio.dev/toolkits/addresszen/framework/google-adk) - [LangChain](https://composio.dev/toolkits/addresszen/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/addresszen/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/addresszen/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/addresszen/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/addresszen/framework/crew-ai) - [Pydantic AI](https://composio.dev/toolkits/addresszen/framework/pydantic-ai) - [AutoGen](https://composio.dev/toolkits/addresszen/framework/autogen) ## Related Toolkits - [Asin data api](https://composio.dev/toolkits/asin_data_api) - Asin data api gives you detailed, real-time product data from Amazon, including price, rank, and reviews. Perfect for e-commerce pros and data-driven marketers who need instant marketplace insights. - [Baselinker](https://composio.dev/toolkits/baselinker) - BaseLinker is an all-in-one e-commerce management platform connecting stores, marketplaces, carriers, and more. It streamlines order processing, inventory control, and automates your sales operations. - [Bestbuy](https://composio.dev/toolkits/bestbuy) - Best Buy is a leading retailer offering APIs for product, store, and recommendation data. Instantly access up-to-date retail insights for smarter shopping and decision-making. - [Bluebarry](https://composio.dev/toolkits/bluebarry) - Bluebarry is a customer data and product-advice platform for shopper identities, profiles, and recommendations. It helps teams analyze customer context and synchronize shopper data for better commerce experiences. - [Btcpay server](https://composio.dev/toolkits/btcpay_server) - BTCPay Server is a free, open-source, self-hosted Bitcoin payment processor. It lets merchants accept Bitcoin payments directly, cutting out middlemen and boosting privacy. - [Cdr platform](https://composio.dev/toolkits/cdr_platform) - Cdr platform is an API for purchasing carbon dioxide removal services. It enables businesses to offset emissions by accessing verified carbon removal projects. - [Cloudcart](https://composio.dev/toolkits/cloudcart) - CloudCart is an e-commerce platform for building and managing online stores. It helps businesses streamline product listings, orders, and customer engagement. - [Commerce Layer](https://composio.dev/toolkits/commerce_layer) - Commerce Layer is a headless commerce platform with transactional APIs for orders, inventory, pricing, customers, and fulfillment. Use it to centralize ecommerce operations and surface real-time commerce data. - [Countdown api](https://composio.dev/toolkits/countdown_api) - Countdown API gives you real-time, structured eBay product data, reviews, and seller feedback. Perfect for powering price monitoring, product research, or marketplace analytics workflows. - [Dpd2](https://composio.dev/toolkits/dpd2) - Dpd2 is a robust email management platform for handling, sorting, and automating email workflows. Streamline your communications and boost productivity with advanced sorting, labeling, and response tools. - [Finerworks](https://composio.dev/toolkits/finerworks) - FinerWorks is an online platform for fine art and photo printing services. Artists and photographers use it to order custom prints and manage print inventory efficiently. - [Fingertip](https://composio.dev/toolkits/fingertip) - Fingertip is a business management platform for selling, booking, and customer engagement—all from a single link. It helps businesses streamline operations and connect with customers across social channels. - [Fraudlabs pro](https://composio.dev/toolkits/fraudlabs_pro) - FraudLabs Pro is an online payment fraud detection service for e-commerce and merchants. It helps minimize chargebacks and revenue loss by detecting and preventing fraudulent transactions. - [Gelato](https://composio.dev/toolkits/gelato) - Gelato is a print-on-demand platform for creating products, managing orders, checking stock, and finding shipping options. It helps businesses sell globally with local production, pricing, and fulfillment. - [Gift up](https://composio.dev/toolkits/gift_up) - Gift Up! is a digital platform for selling, managing, and redeeming gift cards online. It streamlines promotions and gift card transactions for businesses and their customers. - [Goody](https://composio.dev/toolkits/goody) - Goody is a gifting platform that lets users send gifts and physical products without handling logistics. It streamlines gifting by managing delivery, fulfillment, and recipient experience. - [Gumroad](https://composio.dev/toolkits/gumroad) - Gumroad is a platform for selling digital products, physical goods, and memberships with a simple checkout and marketing tools. It streamlines creator payouts and helps you grow your audience effortlessly. - [HitPay](https://composio.dev/toolkits/hitpay) - HitPay is a payments platform offering processing, invoicing, recurring billing, payouts, and merchant business APIs. Helps merchants accept payments and manage cash flow with unified, developer-friendly APIs. - [Instacart](https://composio.dev/toolkits/instacart) - Instacart is an online grocery delivery and pickup service platform. It lets you discover local retailers and create shoppable lists and recipes with ease. - [Junglescout](https://composio.dev/toolkits/junglescout) - Junglescout is an Amazon product research and analytics platform for sellers. It delivers sales estimates, competitive insights, and optimization tools to boost your Amazon business. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Addresszen MCP? With a standalone Addresszen MCP server, the agents and LLMs can only access a fixed set of Addresszen tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Addresszen 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 Addresszen tools. ### Can I manage the permissions and scopes for Addresszen while using Tool Router? Yes, absolutely. You can configure which Addresszen 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 Addresszen data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)