# How to integrate Addresszen MCP with Codex

```json
{
  "title": "How to integrate Addresszen MCP with Codex",
  "toolkit": "Addresszen",
  "toolkit_slug": "addresszen",
  "framework": "Codex",
  "framework_slug": "codex",
  "url": "https://composio.dev/toolkits/addresszen/framework/codex",
  "markdown_url": "https://composio.dev/toolkits/addresszen/framework/codex.md",
  "updated_at": "2026-10-04T17:15:47.387Z"
}
```

## Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Addresszen MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

## Also integrate Addresszen with

- [Claude Code](https://composio.dev/toolkits/addresszen/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/addresszen/framework/claude-cowork)
- [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)
- [OpenClaw](https://composio.dev/toolkits/addresszen/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/addresszen/framework/hermes-agent)
- [Atomic Agent](https://composio.dev/toolkits/addresszen/framework/atomic-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

### Why use Composio?
Apart from a managed and hosted MCP server, you will get:
- CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
- Large tool responses: Handle them to minimise context rot.
- Dynamic just-in-time access to 20,000 tools across 1500+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need.

## Connect Addresszen to Codex

### How to install Addresszen MCP in Codex
### Run the setup command
Run this command in your terminal to add the Composio MCP server to Codex.

```bash
codex mcp add composio --url https://connect.composio.dev/mcp
```

## 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 API key status and resolved US address details, so your agent can check key availability, determine whether a key is usable, resolve selected address completions, and return full US-formatted addresses on your behalf.
- API key availability checks: Have your agent check whether an Addresszen API key is currently available for use.
- API key usability checks: Let the agent determine whether a given Addresszen API key can currently be used.
- US address resolution: Direct your agent to resolve a selected US address completion into its full address.
- US-formatted address retrieval: Instruct your agent to return resolved address details in a complete US address format.

## 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.

## Creating MCP Server - Stand-alone vs Composio SDK

The Addresszen MCP server provides comprehensive access to Addresszen operations through Composio. Once connected, you can perform all major Addresszen actions directly from Codex using natural language commands.

## Complete Code

None listed.

## Conclusion

### Conclusion
You've successfully integrated Addresszen with Codex using Composio's MCP server. Now you can interact with Addresszen directly from your terminal, VS Code, or the Codex App using natural language commands.
Key benefits of this setup:
- Seamless integration across CLI, VS Code, and standalone app
- Natural language commands for Addresszen operations
- Managed authentication through Composio
- Access to 20,000+ tools across 1500+ apps for cross-app workflows
- CodeAct workbench for complex tool chaining
Next steps:
- Try asking Codex to perform various Addresszen operations
- Explore cross-app workflows by connecting more toolkits
- Build automation scripts that leverage Codex's AI capabilities

## How to build Addresszen MCP Agent with another framework

- [Claude Code](https://composio.dev/toolkits/addresszen/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/addresszen/framework/claude-cowork)
- [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)
- [OpenClaw](https://composio.dev/toolkits/addresszen/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/addresszen/framework/hermes-agent)
- [Atomic Agent](https://composio.dev/toolkits/addresszen/framework/atomic-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.
- [Clover](https://composio.dev/toolkits/clover) - Clover is a point-of-sale and merchant platform that provides payments, orders, inventory, and device APIs. Use it to manage orders, customers, employees, payments, and receipts across locations.
- [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.
- [Creem](https://composio.dev/toolkits/creem) - Creem is a merchant-of-record platform for managing products, checkouts, subscriptions, customers, licenses, discounts, transactions, refunds, and revenue operations. Helps businesses handle billing, compliance, and revenue workflows with a unified billing stack.
- [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.

## 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 Codex?

Yes, you can. Codex 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.

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