Finance & ERP · Integration
Navan
Add Navan to your product for your customers, and give your AI agents governed access to it.
Embed a Navan integration so your product can work with the travel and expense data a customer already runs rather than asking finance to re-key it. Navan holds trips and bookings on one side and expenses, corporate card transactions and expense reports on the other, and approved expenses carry the general ledger coding, cost centres and dimensions a customer's own chart of accounts requires before anything reaches their ERP. Each customer authorises their own Navan account, so every read and write is scoped to their tenant and logged, which matters here because a duplicated expense is a number somebody has to explain. fastn owns the auth, token refresh, rate limits and API upkeep, and the same governed connection is what your AI agents use.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Let each customer connect their own Navan account so trips, expenses and card transactions appear inside your product with no per-customer code.
Read approved expense reports with their general ledger coding and cost centres so your product can post or reconcile against the customer's own account structure.
Show a project or client view of travel and expense spend inside your product, built from that tenant's own Navan records.
Support each customer's own expense policies, categories and approval structures as per-tenant configuration rather than code.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An agent explains what drove a department's travel spend last month by reading only that customer's Navan data.
An agent finds expenses that are missing receipts or coding and lists them for a finance reviewer, with every read audited.
An agent answers a traveller's question about an existing trip or expense within scoped permissions.
Example prompt
Summarise this team's Navan travel and expense spend this quarter and flag anything still uncoded.
Set up Navan in 4 steps
- 01Enable the Navan connector in your fastn dashboard.
- 02Have each customer authorise their own Navan account so calls run under their credentials.
- 03Map the trip, expense and general ledger coding fields your product uses, per customer.
- 04Call it from your product and expose the same connection to your agents through the MCP gateway.
Why teams use the Navan integration
What you get by embedding it with fastn instead of building it yourself.
- Ship a Navan integration without building it. Your customers connect their own Navan account inside your product and work their invoices, payments and vendors there, with no per-customer code on your side.
- Handle the part that actually costs time: financial writes must be idempotent and reconcilable, because a duplicate is an accounting problem rather than a bug. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a Navan update is not your on-call problem.
- One integration serves your product and your agents. The same governed Navan connection powers in-product features and gives AI agents scoped, audited access, so you move financial records without hand-keying them between systems without wiring it twice.
Used by these teams
Compare with
Expensify
Brex
NetSuiteOften used alongside
Tools the same teams tend to run next to Navan, across other categories.
Shopify
Stripe
BigCommerce
AfterShipNavan integration FAQ
How do I add a Navan integration to my product?
Enable the Navan connector in your fastn dashboard, then let each customer authenticate their own Navan account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Navan client code in your app and no per-customer branch in your codebase. Setup is 4 steps.
Do my customers each connect their own Navan account?
Yes. Every connection is scoped to the individual customer, so each authorises their own Navan account and only ever sees their own invoices, payments and vendors. That per-tenant isolation is the point of an embedded integration: you support the long tail of customer setups without maintaining an integration per customer.
Can AI agents use this Navan integration?
Yes. The same connection is exposed to your agents through the fastn MCP gateway, with permissions scoped per tenant and every call audited. An agent explains what drove a department's travel spend last month by reading only that customer's Navan data.
Who maintains the Navan integration?
fastn does. When Navan changes an endpoint, deprecates a field or alters its auth, the fix lands in the connector rather than in your backlog, and your customers' connections keep working.
Is the Navan integration safe for financial writes?
Writes are idempotent, so a retry after a timeout does not post a document twice, and every call is logged per tenant so an entry can be traced back to the event that created it. That matters more in finance than anywhere else, because a duplicate is a number somebody has to explain.
Can it handle each customer's own chart of accounts?
Yes. ERP deployments are configured to the business, so account structures, required fields and fiscal calendars differ per customer. Those are mapped per tenant as configuration, not hard-coded.
What about Navan rate limits during a first import?
Backfills are throttled deliberately. ERP limits are often account-wide rather than per-integration, so an unthrottled import can exhaust a customer's allowance and disrupt their other integrations.
What can I build with the Navan integration?
A common starting point: let each customer connect their own Navan account so trips, expenses and card transactions appear inside your product with no per-customer code. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.
How much does the Navan integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Navan does not change your per-connector cost. You can start free with 3 connected accounts.
Add Navan to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.