# How to integrate Elorus MCP with Codex ```json { "title": "How to integrate Elorus MCP with Codex", "toolkit": "Elorus", "toolkit_slug": "elorus", "framework": "Codex", "framework_slug": "codex", "url": "https://composio.dev/toolkits/elorus/framework/codex", "markdown_url": "https://composio.dev/toolkits/elorus/framework/codex.md", "updated_at": "2026-05-06T08:10:11.561Z" } ``` ## Introduction Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Elorus MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer. ## Also integrate Elorus with - [OpenAI Agents SDK](https://composio.dev/toolkits/elorus/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/elorus/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/elorus/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/elorus/framework/claude-cowork) - [OpenClaw](https://composio.dev/toolkits/elorus/framework/openclaw) - [Hermes](https://composio.dev/toolkits/elorus/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/elorus/framework/cli) - [Google ADK](https://composio.dev/toolkits/elorus/framework/google-adk) - [LangChain](https://composio.dev/toolkits/elorus/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/elorus/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/elorus/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/elorus/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/elorus/framework/crew-ai) ## 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 870+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need. ## Connect Elorus to Codex ### How to install Elorus 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 Elorus MCP server, and what's possible with it? The Elorus MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Elorus account. It provides structured and secure access to your invoicing, billing, and time-tracking tools, so your agent can perform actions like creating invoices, managing contacts, tracking estimates, and sending billing communications on your behalf. - Automated invoice creation and delivery: Instruct your agent to generate new invoices, fill in all necessary details, and instantly email them to clients or contacts with just a prompt. - Comprehensive contact management: Ask your agent to fetch, list, and organize your business contacts, so you can easily keep your client database up to date or find specific clients in seconds. - Dynamic bills and expenses tracking: Let your agent retrieve and manage lists of bills and expenses, helping you stay on top of accounts payable and overall financial health. - Flexible product and service catalog management: Direct your agent to create new products or services, update details, or fetch lists of items for invoicing and inventory purposes. - Estimates and credit notes retrieval: Have your agent pull up estimates or credit notes with filters for date, contact, or status—ideal for monitoring ongoing deals and financial adjustments. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `ELORUS_CREATE_INVOICE` | Create Invoice | Tool to create a new invoice. use after gathering all invoice details. | | `ELORUS_CREATE_PRODUCT` | CREATE_PRODUCT | Tool to create a new product or service in elorus. use when you need to add or configure items/services in your product catalog. | | `ELORUS_EMAIL_INVOICE` | Email Invoice | Tool to email an existing invoice to specified contacts. use after generating an invoice and obtaining contact ids. | | `ELORUS_GET_BILLS` | Get Bills | Tool to retrieve a list of bills. use when you need to list bills with optional filters after creation. | | `ELORUS_GET_CONTACTS` | Get Contacts | Tool to retrieve a list of contacts. use after authentication to fetch contacts in batches. example: 'list page 2 of active company contacts sorted by name.' | | `ELORUS_GET_CREDIT_NOTES` | Get Credit Notes | Tool to retrieve a list of credit notes. use when you need to fetch credit notes filtered by page, contact, date range, or currency. | | `ELORUS_GET_EMAIL_TEMPLATES` | Get Email Templates | Tool to retrieve a list of email templates. use when you need to fetch and page through existing templates in the organization. | | `ELORUS_GET_ESTIMATES` | Get Estimates | Tool to retrieve a list of estimates. use when you need to list estimates with pagination after creation. | | `ELORUS_GET_INVOICES` | Get Invoices | Tool to retrieve a list of invoices. use when you need to list invoices with filtering and pagination options. | | `ELORUS_GET_PRODUCTS` | Get Products | Tool to retrieve a list of products/services with optional filtering, sorting, and pagination. use when you need to fetch products for reports, ui lists, or inventory management. | | `ELORUS_GET_TAXES` | Get Taxes | Tool to retrieve a list of taxes. use after authentication to list taxes with optional filters. | | `ELORUS_GET_TEMPLATES` | Get Templates | Tool to retrieve a list of document templates. use when you need to list and paginate available templates. | | `ELORUS_UPDATE_CONTACT` | Update Contact | Tool to update an existing contact by id. use when you need to modify contact details after retrieving current information. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The Elorus MCP server provides comprehensive access to Elorus operations through Composio. Once connected, you can perform all major Elorus actions directly from Codex using natural language commands. ## Complete Code None listed. ## Conclusion ### Conclusion You've successfully integrated Elorus with Codex using Composio's MCP server. Now you can interact with Elorus 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 Elorus operations - Managed authentication through Composio - Access to 20,000+ tools across 870+ apps for cross-app workflows - CodeAct workbench for complex tool chaining Next steps: - Try asking Codex to perform various Elorus operations - Explore cross-app workflows by connecting more toolkits - Build automation scripts that leverage Codex's AI capabilities ## How to build Elorus MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/elorus/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/elorus/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/elorus/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/elorus/framework/claude-cowork) - [OpenClaw](https://composio.dev/toolkits/elorus/framework/openclaw) - [Hermes](https://composio.dev/toolkits/elorus/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/elorus/framework/cli) - [Google ADK](https://composio.dev/toolkits/elorus/framework/google-adk) - [LangChain](https://composio.dev/toolkits/elorus/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/elorus/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/elorus/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/elorus/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/elorus/framework/crew-ai) ## Related Toolkits - [Stripe](https://composio.dev/toolkits/stripe) - Stripe is a global online payments platform offering APIs for managing payments, customers, and subscriptions. Trusted by businesses for secure, efficient, and scalable payment processing worldwide. - [Alpha vantage](https://composio.dev/toolkits/alpha_vantage) - Alpha Vantage is a financial data platform offering real-time and historical stock market APIs. Get instant, reliable access to equities, forex, and technical analysis data for smarter trading decisions. - [Altoviz](https://composio.dev/toolkits/altoviz) - Altoviz is a cloud-based billing and invoicing platform for businesses. It streamlines online payments, expense tracking, and customizable invoice management. - [Benzinga](https://composio.dev/toolkits/benzinga) - Benzinga provides real-time financial news and data APIs for market coverage. It helps you track breaking news and actionable market insights instantly. - [Brex](https://composio.dev/toolkits/brex) - Brex provides corporate credit cards and spend management tailored for startups and tech businesses. It helps optimize company cash flow, streamline accounting, and accelerate business growth. - [Chaser](https://composio.dev/toolkits/chaser) - Chaser is accounts receivable automation software that sends invoice reminders and helps businesses get paid faster. It streamlines the collections process to save time and improve cash flow. - [Clientary](https://composio.dev/toolkits/clientary) - Clientary is a platform for managing clients, invoices, projects, proposals, and more. It streamlines client work and saves you serious admin time. - [Coinbase](https://composio.dev/toolkits/coinbase) - Coinbase is a platform for buying, selling, and storing cryptocurrency. It makes exchanging and managing crypto simple and secure for everyone. - [Coinranking](https://composio.dev/toolkits/coinranking) - Coinranking is a comprehensive cryptocurrency market data platform offering access to real-time coin prices, market caps, and historical data. Get accurate, up-to-date stats for thousands of digital assets in one place. - [Coupa](https://composio.dev/toolkits/coupa) - Coupa is a business spend management platform for procurement, invoicing, and expenses. It helps organizations streamline purchasing, control costs, and gain complete visibility over financial operations. - [CurrencyScoop](https://composio.dev/toolkits/currencyscoop) - CurrencyScoop is a developer-friendly API for real-time and historical currency exchange rates. Easily access fiat and crypto data for smart, up-to-date financial applications. - [Daffy](https://composio.dev/toolkits/daffy) - Daffy is a modern charitable giving platform with a donor-advised fund. Easily set aside funds, grow them tax-free, and donate to over 1.7 million U.S. charities. - [Eagle doc](https://composio.dev/toolkits/eagle_doc) - Eagle doc is an AI-powered OCR API for invoices and receipts. It delivers fast, reliable, and accurate document data extraction for seamless automation. - [Eodhd apis](https://composio.dev/toolkits/eodhd_apis) - Eodhd apis delivers comprehensive financial data, including live and historical stock prices, via robust APIs. Easily access reliable, up-to-date market insights to power your apps, dashboards, and analytics. - [Fidel api](https://composio.dev/toolkits/fidel_api) - Fidel api is a secure platform for linking payment cards to web and mobile apps. It enables real-time card transaction monitoring and event-based automation for businesses. - [Finage](https://composio.dev/toolkits/finage) - Finage is a secure API platform delivering real-time and historical financial data for stocks, forex, crypto, indices, and commodities. It empowers developers and businesses to access, analyze, and act on market data instantly. - [Finmei](https://composio.dev/toolkits/finmei) - Finmei is an invoicing tool that simplifies billing, invoice management, and expense tracking. Ideal for automating and organizing your business finances in one place. - [Fixer](https://composio.dev/toolkits/fixer) - Fixer is a currency data API offering real-time and historical exchange rates for 170 currencies. Instantly access accurate, up-to-date forex data for your applications and workflows. - [Fixer io](https://composio.dev/toolkits/fixer_io) - Fixer.io is a lightweight API for real-time and historical foreign exchange rates. It makes global currency conversion fast, accurate, and hassle-free. - [Flutterwave](https://composio.dev/toolkits/flutterwave) - Flutterwave is a global payments platform enabling businesses to accept and send payments across Africa and beyond. Its robust APIs simplify cross-border transactions and financial operations. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Elorus MCP? With a standalone Elorus MCP server, the agents and LLMs can only access a fixed set of Elorus tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Elorus 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 Elorus tools. ### Can I manage the permissions and scopes for Elorus while using Tool Router? Yes, absolutely. You can configure which Elorus 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 Elorus data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)