Commerce & Payments · Integration
Authorize.Net
Add Authorize.Net to your product for your customers, and give your AI agents governed access to it.
Embed an Authorize.Net integration so your customers can take payments, manage stored customer profiles, and issue refunds from inside your product, with governed agent access to the same records. Writes are idempotent so a retry cannot double-charge, and every call is logged per tenant so a transaction can be reconciled against the event that triggered it. fastn handles each merchant's credentials and API upkeep.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Let customers charge, authorise, and capture payments through their own merchant account.
Create and update stored customer profiles and payment profiles from your product.
Issue refunds or void transactions with idempotent writes and a per-tenant audit trail.
Read transaction detail and settlement batches so finance can reconcile inside your product.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An agent looks up a transaction and its status before answering a billing question.
An agent issues a refund within governed permissions and records the reason.
An agent reacts to a declined payment and starts the retry workflow.
Example prompt
Find declined transactions in the last seven days and group them by response reason.
Set up Authorize.Net in 4 steps
- 01Open the Authorize.Net connector from your fastn dashboard.
- 02Have each customer authenticate their Authorize.Net merchant account.
- 03Map the transaction, customer profile, and refund fields your product uses, then enable actions and triggers.
- 04Call them from your product, or expose them to an agent through the MCP server.
Why teams use the Authorize.Net integration
What you get by embedding it with fastn instead of building it yourself.
- Ship an Authorize.Net integration without building it. Your customers connect their own Authorize.Net account inside your product and work their orders, payments and customers there, with no per-customer code on your side.
- Handle the part that actually costs time: money and order state must never be double-applied, and reconciliation has to be possible. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so an Authorize.Net update is not your on-call problem.
- One integration serves your product and your agents. The same governed Authorize.Net connection powers in-product features and gives AI agents scoped, audited access, so you keep commerce and payment records in step with your product without wiring it twice.
Used by these teams
Compare with
Stripe
AdyenOften used alongside
Tools the same teams tend to run next to Authorize.Net, across other categories.
NetSuite
Notion
Box
DocusignAuthorize.Net integration FAQ
How do I add an Authorize.Net integration to my product?
Enable the Authorize.Net connector in your fastn dashboard, then let each customer authenticate their own Authorize.Net account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Authorize.Net client code in your app and no per-customer branch in your codebase. Setup is 4 steps.
Do my customers each connect their own Authorize.Net account?
Yes. Every connection is scoped to the individual customer, so each authorises their own Authorize.Net account and only ever sees their own orders, payments and customers. 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 Authorize.Net 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 looks up a transaction and its status before answering a billing question.
Who maintains the Authorize.Net integration?
fastn does. When Authorize.Net 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 Authorize.Net integration safe for payment and order writes?
Writes are idempotent, so a retry cannot double-charge or duplicate an order, and every call is logged per tenant so a transaction can be reconciled against the event that triggered it.
Can my product react to a new order, payment or refund immediately?
Yes, through event triggers, so fulfilment, entitlement or accounting steps run as soon as the event lands rather than on a nightly sync.
What can I build with the Authorize.Net integration?
A common starting point: charge, authorise, and capture payments through their own merchant account. 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 Authorize.Net integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Authorize.Net does not change your per-connector cost. You can start free with 3 connected accounts.
Add Authorize.Net to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.