How to integrate Ramp MCP with Codex

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Introduction

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

Also integrate Ramp 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 Ramp 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 Ramp MCP server, and what's possible with it?

The Ramp MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Ramp account. It provides structured and secure access to your company's financial data, so your agent can fetch transactions, analyze card activity, generate statements, manage departments, and retrieve detailed expense information on your behalf.

  • Comprehensive transaction tracking: Instantly pull lists of all your business transactions or your own card activity, making it easy to monitor expenses and spot anomalies.
  • Card management and insights: Retrieve details about specific Ramp cards or see all cards assigned to you, including limits, status, and cardholder info for better financial oversight.
  • Automated statement generation: Ask your agent to generate and download account statements in multiple formats (PDF, CSV, JSON) for reporting or bookkeeping.
  • Department and organizational management: Create new departments or fetch detailed department profiles to help structure your expense tracking and categorize spending.
  • Detailed transaction analysis: Dive into specific transactions to get merchant information, receipts, dispute details, and accounting codes for audit and compliance purposes.

Supported Tools & Triggers

Tools
Create DepartmentTool for creating a new department in your Ramp organization.
Create Inventory Item Accounting FieldTool to create a new inventory item accounting field for tracking inventory categories.
Create Transaction MemoTool for uploading a new memo for a transaction in Ramp.
Create Mileage ReimbursementTool to create a mileage reimbursement in Ramp.
Create New Custom Accounting FieldTool for creating a new custom accounting field.
Create Tax Code Accounting FieldTool to create a new tax code accounting field in Ramp.
Create User InviteTool to create a user invite for onboarding new employees to Ramp.
Create Webhook SubscriptionTool to create a new webhook subscription for receiving event notifications from Ramp.
Deactivate UserTool to deactivate a user in your Ramp organization.
Delete Accounting GL AccountTool to delete a general ledger account from Ramp.
Delete Accounting ConnectionTool to disconnect the current active API-based accounting connection.
Delete Custom Accounting FieldTool to delete a custom accounting field from Ramp.
Delete Accounting Inventory Item OptionTool to delete an accounting inventory item option from Ramp.
Delete Tax Code Accounting FieldTool to delete the tax code accounting field from Ramp.
Delete Accounting Tax Code OptionTool to delete a tax code option from Ramp.
Delete Accounting Tax RateTool to delete an accounting tax rate from Ramp.
Delete Accounting VendorTool to delete an accounting vendor from Ramp.
Delete Custom Field OptionTool to delete a custom accounting field option from Ramp.
Delete Inventory Item FieldTool to delete the inventory item accounting field from Ramp.
Remove Users from Shared LimitTool to remove users from a shared spend limit in Ramp.
Delete Webhook SubscriptionTool to delete a webhook subscription by ID.
Fetch General Ledger AccountTool to fetch a specific general ledger account by ID from Ramp.
Fetch Accounting VendorTool to fetch a specific accounting vendor by ID from Ramp.
Fetch Custom Accounting FieldTool for fetching a custom accounting field.
List General Ledger AccountsTool to list general ledger accounts from Ramp.
Fetch All Accounting ConnectionsTool to fetch all accounting connections for the current Ramp business.
Get Accounting ConnectionTool to fetch the current active accounting connection for a Ramp account.
Fetch Accounting Connection By IDTool to fetch a specific accounting connection by ID from Ramp.
List Custom Accounting FieldsTool to list custom accounting fields for coding transactions.
List Accounting VendorsTool to list accounting vendors from Ramp.
Get All TransactionsGet all the transactions.
Get CardTool for retrieving detailed information about a specific card.
Get Card Vault ResourceTool to fetch a card's sensitive details from the vault.
Get Custom Field OptionTool to fetch a custom accounting field option by its ID.
Get DepartmentTool for retrieving detailed information about a specific department.
Get Inventory Item FieldTool to fetch inventory item accounting field for the current accounting connection.
Get MemoTool to fetch a transaction memo.
Get Reimbursement DetailsTool for retrieving complete details of a specific reimbursement.
Get Spend LimitTool to fetch detailed information about a specific spend limit.
Get StatementTool for retrieving statement details or downloading statements.
Get Transaction DetailsTool for retrieving complete details of a specific transaction.
Get UserTool to retrieve detailed information about a specific Ramp user by their ID.
Get Users Deferred StatusTool for fetching the status of a deferred user task.
Get Vendor DetailsTool for retrieving detailed information about a specific vendor.
Get WebhookTool to retrieve detailed information about a specific webhook subscription by ID.
Issue Virtual CardTool for issuing virtual cards to users instantly.
List Accounting Inventory Item OptionsTool to list accounting inventory item options from Ramp.
List Accounting Tax RatesTool to list tax rates from Ramp's accounting integration.
List All CardsTool for listing all cards across the organization with optional filters.
List DepartmentsTool for listing all departments in the organization.
List MemosTool for listing memos associated with transactions in your Ramp organization.
List ReimbursementsTool for listing reimbursements with comprehensive filtering options.
List StatementsTool for listing all statements with filtering options.
List UsersTool for listing users in your Ramp organization with flexible filtering.
List VendorsTool for listing vendors with their spending information.
List Vendor Bank AccountsTool for listing bank accounts associated with a specific vendor.
List Vendor ContactsTool for listing contacts associated with a specific vendor.
List Vendor CreditsTool to list all vendor credits for all vendors of a business.
List WebhooksTool for listing all webhook subscriptions for the organization.
Options for Custom Accounting FieldTool for listing options for a given accounting field.
Update Accounting ConnectionTool to update an accounting connection's settings.
Update CardTool to update a card's properties including owner, display name, and spending restrictions.
Update Custom Field OptionTool to update a custom accounting field option.
Update General Ledger AccountTool to update a general ledger account in Ramp.
Update Inventory Item FieldTool to update the inventory item accounting field for a Ramp connection.
Upload Accounting GL AccountsTool to batch upload general ledger accounts to Ramp.
Create Accounting ConnectionTool to register a new API-based accounting connection between Ramp and an accounting provider.
Upload Accounting VendorsTool to batch upload vendors to Ramp for coding transactions, bills, and purchase orders.
Upload Inventory Item OptionsTool to upload inventory item options for an active inventory item accounting field.
Create Physical CardTool to create a physical card asynchronously.
Reactivate Accounting ConnectionTool to reactivate a previously unlinked accounting connection by changing its status back to linked.
Reactivate UserTool to reactivate a suspended user in your Ramp organization.
Submit Reimbursement ReceiptTool to upload a receipt for a reimbursement.
Suspend CardTool to suspend a card by creating an async task that locks the card from use.
Terminate CardTool to permanently terminate a Ramp card.
Update Custom Accounting FieldTool to update a custom accounting field.
Update Accounting Inventory Item OptionTool to update an inventory item option in Ramp's accounting system.
Update Accounting Tax CodeTool to update tax code accounting field.
Update Accounting Tax Code OptionTool to update a tax code option in Ramp.
Update Accounting Tax RateTool to update an accounting tax rate in Ramp.
Update Accounting VendorTool to update an accounting vendor in Ramp.
Update Card Spending LimitTool for updating spending limits on a card.
Update DepartmentTool for updating an existing department in your Ramp organization.
Update Spending LimitTool to update a spending limit in Ramp.
Update UserTool to update an existing user in your Ramp organization.
Upload New Options for Custom Accounting FieldTool for uploading new options for a given accounting field.
Upload Tax Code OptionsTool to upload tax code options to Ramp.
Upload Accounting Tax RatesTool to batch upload tax rates to Ramp.

Conclusion

You've successfully integrated Ramp with Codex using Composio's MCP server. Now you can interact with Ramp 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 Ramp 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 Ramp operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities

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FAQ

What are the differences in Tool Router MCP and Ramp MCP?

With a standalone Ramp MCP server, the agents and LLMs can only access a fixed set of Ramp tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Ramp 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 Ramp tools.

Can I manage the permissions and scopes for Ramp while using Tool Router?

Yes, absolutely. You can configure which Ramp 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 Ramp data and credentials are handled as safely as possible.

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