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How to connect Navan with ChatGPT

Connect ChatGPT to Navan MCP. List recent business travel transactions, review unusual employee expense activity, and more using natural language, with authentication handled for you.

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Navan is a business travel and expense platform with APIs for travel, transactions, users, and audits. It helps companies centralize travel operations, spending data, and policy controls.

26 Tools

How to connect Navan MCP with ChatGPT

ChatGPT can take action across your apps and files, stay with a project for hours, and turn a goal into finished materials like sheets, slides, and docs, not just answers.

In this guide, I will explain the easiest and most secure way to connect your Navan account to ChatGPT via Composio Connect, so it can review business travel, query transactions, manage users, inspect audits, and use custom fields through natural language commands without ever putting your account credentials at risk.

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Why use Composio over default connectors?

  • Apps with read and write access. Default connectors mostly can read your data. Composio's Navan integration lets ChatGPT take actions like creating drafts, sending updates, labeling records, and more.
  • 1,700+ SaaS toolkits out of the box. Composio gives you instant access to a vast catalog of pre-built connectors, from Gmail and Slack to Notion, Linear, and Salesforce.
  • One MCP server for every app. Connect any of your applications on demand through a single endpoint, rather than juggling a separate server for each app.
  • Smart, context-aware tool loading. Unlike traditional MCP servers that dump every available tool into the LLM context window, Composio searches for and loads only the tools relevant to the task at hand.
  • Cross-app automation. Chain actions across multiple apps in a single run - fetch a thread, summarize it in Notion, and post highlights to Slack without leaving the conversation.

Prerequisites

Note: Composio connects through OAuth. You will be asked to sign in and approve specific permissions. Review the permission screen carefully if you are using a work account.

Step-by-step: Connect Navan to ChatGPT

1. Install the Composio plugin

Click the button. ChatGPT opens the Composio plugin page. Click Install plugin.

Install in ChatGPT

Composio plugin page in ChatGPT with the Install plugin button

You can also find it inside ChatGPT: go to Settings, open Plugins, search the marketplace for Composio, and click Install plugin.

2. Authenticate

After you install, ChatGPT asks you to authenticate with Composio. Log in and click Allow access to authorize ChatGPT to use your Composio account.

Composio login and Allow access screen for ChatGPT

3. Start using Composio

That is it. Composio tools are now available in ChatGPT. Type @Composio followed by your request, for example @Composio find unread Navan messages and summarize them, and it will run the actions you authorize. On first use it asks you to authorize Navan.

Option 2: Add Composio as an MCP server

If you cannot use the plugin marketplace, add Composio as a custom MCP server instead.

1. Open the MCP settings

In ChatGPT, go to Settings and open the Plugins section. Inside the Plugins page, click the MCP tab.

ChatGPT settings showing the Plugins page with the MCP tab selected

2. Add the server

Click Add server. In the Name field enter Composio, for Type select Streamable HTTP, and in the URL field paste the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
ChatGPT Add server dialog with the name Composio, type Streamable HTTP, and the Composio MCP URL

Then click Save. The Composio server now appears in your MCP plugins list.

ChatGPT Plugins page showing the Composio MCP server added to the list

3. Authenticate

Click Authenticate on the Composio entry, log in via Composio, and click Allow access. Composio tools are then available in ChatGPT the same way as with the plugin.

What you can do after connecting Navan

  • List recent business travel transactions
  • Review unusual employee expense activity
  • Show users with missing custom fields

Security + privacy notes (important)

  • Use least-privilege access: Only grant permissions you actually need.
  • Review OAuth permissions before approving: Make sure requested scopes match what you expect Composio and ChatGPT to do.
  • Keep write actions human-reviewed: For actions like sending messages, creating labels, or editing drafts, keep manual confirmation enabled.
  • Be careful with sensitive data: Avoid using this setup with highly sensitive information unless allowed by your personal, company, or client policies.
TOOLS

Supported Tools

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

Download Transaction Receipt

Download a transaction receipt, electronic receipt, or missing-receipt affidavit.

Get Custom Field

Get one company Navan Expense custom-field definition by its provider field name.

Get Custom Field Job

Get the current status, operation counts, timestamps, and up to 50 errors for an asynchronous Navan custom-field option job.

Get Expense User

Get one eligible-company Navan Expense user by ID.

Get Transaction

Get one Navan Expense transaction by its ID for an ad-hoc lookup.

Get Transaction Receipt Links

Return seven-day presigned receipt, electronic-receipt, and affidavit URLs for one Navan Expense transaction.

Import Trip

Import an external trip and any supplied flight, hotel, rail, car, or black-car bookings into Navan.

List Adjustments

Return one cursor page of credit and debit adjustments for a documented date search and optional filters.

List Audit Logs

Return one cursor page of ERP and accounting-settings audit events for eligible companies within a required RFC3339 window of at most 31 days.

List Bookings

Return one page of company booking rows filtered by booking, trip, status, type, or epoch-second time ranges, optionally including transactions.

List Card Transactions

Return one cursor page of Navan card transactions for a documented date search and optional transaction filters.

List Connect Transactions

Return one cursor page of external card-integration transactions.

List Custom Fields

List all Navan Expense custom-field definitions for the company.

List Daily Rebates

Return one cursor page of daily rebates for a required documented date search and optional transaction filters.

List Disputes

Return one cursor page of Navan disputes, including provisional credits and reversals for EUR and GBP, for a required documented date search and optional transaction filters.

List Expense Users

Return one cursor page of company Expense users filtered by text, enabled state, guest state, or administrator role.

List Fees

Return one cursor page of direct-reimbursement, foreign-exchange, and platform fees.

List Manual Transactions

Return one cursor page of manual expenses, reimbursements, and payroll transactions.

List Repayments

Return one cursor page of user repayments for a required documented date search and optional transaction filters.

List Statement Payments

Return one cursor page of statement payments and statement payment refunds for a required documented date search.

List TMC Users

Return one documented page of TMC company users.

List Transaction Activities

Return one cursor page of activity history for a single Navan Expense transaction, newest first.

List Transaction Receipts

Return one cursor page of receipt links for selected Navan transaction families and a documented date search.

List Transactions

Return one cursor page across selected Navan transaction families, or fetch a batch using repeated transaction IDs.

Submit Custom Field Option Operations

Submit 1 to 5,000 CREATE, UPDATE, UPSERT, or DELETE operations for one Navan custom field as an asynchronous job.

Update Transactions

Update supported ERP, accounting, HR, and custom-field values for 1 to 100 Navan transactions.

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FAQ

Frequently asked questions

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

Yes, you can. ChatGPT 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 Navan tools.

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

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