API integrations: Power your app with our flexible API

Tap into our developer-friendly API to easily manage payments, subscriptions, and analytics, while delivering a seamless user experience. Built for mobile games, SaaS tools, and digital content, our payment system streamlines billing so you can avoid Apple’s 30% App Store commission.

Build your subscription page

01

Add a pricing preview page

Create a page on your site that showcases your product and pricing, and lets customers subscribe to a plan. When they proceed to Checkout, they’re redirected to a hosted page that completes the purchase and locks in the order details.

02

Add a return page

Build a page that displays order confirmation messaging or details after checkout. Link this page to the Checkout Session return_url, which Subotiz redirects customers to once their purchase is complete.

03

Add a cancel page

Create a cancel page that Subotiz redirects to if a customer exits the Checkout process . Link it to the cancel_url, in your Checkout Session.

04

Add a webhook url

Create a /webhook endpoint, to receive real-time subscription events like payments, renewals and cancellations. Use it to verify subscription status after checkout and keep your system up to date.

Call the Subotiz API

Create a checkout session URL

The Checkout Session controls what your customer sees in the hosted payment page, such as line items, the order amount and currency, and acceptable payment methods.

Name

Provider

Hub-Timestamp

The millisecond timestamp

Content-Type

Application/json

Request-Id

The unique ID of the request

Hub-Access-No

Merchant unique id

Hub-Signature

Digital signature for request validation

Key

Type

Required

Description

access_no

string

The assigned merchant number

sub_merchant_id

string

The sub-merchant number of the merchant

order_id

string

Order number

customer_id

string

Customer object id

string

customer's email

line_items

Array(struct)

price object message

return_url

varchar

Subotiz redirects to after the customer completes the checkout

cancel_url

varchar

Subotiz redirects to when the customer clicks the back button in Checkout

callback_url

varchar

merchant listens to events related to subscription activity

Key

Type

Required

Description

code

string

return code

message

string

code message

data

Object

Checkout session message

data.session_id

string

Session id

data.session_url

string

https://xxxx/api/v1/checkout/{session_id}

API demo

curl --location 'https://checkout.subotiz.com/api/v1/session' --header 'request-id: req_1747377952155' --header 'Content-Type: application/json' --data-raw '{ "access_no": "600001", "sub_merchant_id": "364861", "order_id": "order_20260603_03", "email": "[email protected]", "line_items": [ { "price_id": "521564108747754572", "quantity": "1" } ], "return_url": "https://example.com/success", "cancel_url": "https://example.com/cancel", "callback_url": "https://api.example.com/webhook" }

{ "code": "success", "message": "", "data": { "session_id": "526296135225065446", "session_url": "https://checkout.subotiz.com/checkout/526296135225065446" } }

Redirect to the checkout session

After creating the session, redirect your customer to the Checkout URL provided in the session response. Once they complete or cancel checkout, Subotiz will redirect them to your configured return or cancel URL.

Fulfill the subscription

Merchants listen to events related to subscription activity. After a successful payment and redirect to the return page, Subotiz will notify the payment result and subscription status using callback URL, verify that the subscription status is active and grant your customer access to the products and features they subscribed to.