How to integrate Mx technologies MCP with Codex

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

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Basic

Mx technologies is a unified API platform for aggregating and enhancing financial data across banks and institutions. It streamlines access to transactional, account, and identity data for smarter financial applications.

36 Tools

Introduction

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

Also integrate Mx technologies with

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 1000+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need.

How to install Mx technologies MCP in Codex

Run the setup command

Run this command in your terminal to add the Composio MCP server to Codex.

Terminal

It will initiate the authentication in a browser window, authorize Codex to access your Composio account.

Composio authentication page

(Optional) Authenticate with OAuth

To authenticate manually, run the login command to open a browser window and authorize Codex to access your Composio account.

bash
codex mcp login composio

Verify the connection

Run codex mcp list to confirm Composio appears as a registered MCP server.

bash
codex mcp list

Codex App

Codex App follows the same approach as VS Code.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
  2. Fill the header and Key fields with { "x-consumer-api-key" = "ck_*******" }.
  3. The Key is the Composio API key, that you can find on dashboard.composio.dev
  4. Click on Authenticate and authorize Codex to your Composio account and you're all set.
Codex App MCP setup
  1. Restart and verify if it's there in .codex/config.toml
bash
[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }

What is the Mx technologies MCP server, and what's possible with it?

The Mx technologies MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Mx technologies account. It provides structured and secure access to financial data aggregation and account management features, so your agent can perform actions like creating accounts, managing members, fetching financial rewards, and handling account ownership on your behalf.

  • Automated account creation and management: Let your agent create new manual accounts, partner accounts, and user SSO accounts for seamless onboarding and testing.
  • Member aggregation and connection: Instruct your agent to create members and initiate aggregation of financial products across institutions, streamlining financial data collection.
  • Rewards and incentives tracking: Have your agent fetch and aggregate member rewards data after account connections, so you never miss out on incentives.
  • Secure access to account details: Direct your agent to list account owners, retrieve account numbers by member, and access configurable widget URLs for enhanced user interactions.
  • Credential and API management: Use your agent to retrieve API credentials for audience services, streamlining authentication flows and integrations.

Conclusion

You've successfully integrated Mx technologies with Codex using Composio's MCP server. Now you can interact with Mx technologies 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 Mx technologies operations
  • Managed authentication through Composio
  • Access to 20,000+ tools across 1000+ apps for cross-app workflows
  • CodeAct workbench for complex tool chaining

Next steps:

  • Try asking Codex to perform various Mx technologies operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities
TOOLS

Supported Tools

Every Mx technologies action and event your agent gets out of the box.

Disable MX User Account

Disables an MX user account, preventing background updates to accounts and transactions and restricting data access.

Create account

Creates a manual account for a specified user in MX Platform.

Retrieve Audience API Credentials

Tool to retrieve Audience API credentials.

Create member

Create a member to connect a user to a financial institution.

Create Partner Account

Create a new user (partner account) in the MX Platform.

Fetch rewards

Initiate rewards aggregation for a specific member.

Get configurable widget URL

Retrieve a configurable widget URL for embedding MX widgets (Connect, Transactions, Pulse, etc.

List Account Numbers by Member

Tool to list account numbers for a specific member.

List account owners

Tool to list account owners for a specific member.

List accounts

Tool to list all accounts for a user.

List budgets

List all budgets for a specific MX user.

List categories

Tool to list all categories for a user.

List challenges

Tool to list MFA challenges for a member.

List favorite institutions

List the partner's favorite financial institutions, sorted by popularity.

List goals

List all financial goals for a specific MX user.

List institution credentials

Tool to list credential fields required by a given institution.

List institutions

Tool to list financial institutions supported by MX.

List member accounts

Tool to list accounts for a specific member.

List members

List all members (financial institution connections) for a specific user.

List rewards

Lists rewards and loyalty program data for a specific member.

List statements by member

Retrieve a paginated list of monthly account statements (PDF) for a specific member.

List taggings

List all taggings for a specific MX user.

List tags

List all custom tags associated with a specific MX user.

List transactions

Retrieve all financial transactions for an MX user across all their connected accounts and members.

List transactions by member

Tool to list transactions for a member.

List users

List all users in the MX Platform.

Read account

Tool to retrieve details for a specific account.

Read category

Tool to retrieve a default category by GUID.

Read FDX account

Retrieve details for a specific account using the FDX 4.

Read institution

Tool to retrieve details for a specific institution by code.

Read transaction

Tool to retrieve details for a specific transaction by its GUID.

Read transaction by account

Tool to retrieve details for a specific transaction by account.

Read transaction rule

Tool to retrieve details for a specific transaction rule by its GUID.

Update transaction

Tool to update a specific transaction's description.

Update transaction rules

Tool to update an existing transaction rule.

Update user tagging

Tool to update a tagging for an MX user.

FAQ

Frequently asked questions

With a standalone Mx technologies MCP server, the agents and LLMs can only access a fixed set of Mx technologies tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Mx technologies and many other apps based on the task at hand, all through a single MCP endpoint.

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 Mx technologies tools.

Yes, absolutely. You can configure which Mx technologies 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.

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 Mx technologies data and credentials are handled as safely as possible.

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