Mock Commerce & Billing

Hosted Checkout Sessions

Integrate zero-PCI hosted checkout pages modeled directly after Stripe Checkout. Generate hosted session URLs, handle dynamic multi-line item carts, test success/cancel callback redirects, and trigger automated webhook fulfillment.

API Playground Lifecycle & Webhooks

Interactive Cart Builder

Configure line items and preview the generated Stripe-like hosted session.

Developer Pro SaaS (Monthly)

$29.00 USD each

$29.00

Dedicated Dedicated IP Add-on

$15.00 USD each

$15.00

Subtotal & Total Due$44.00 USD

Interactive Checkout Endpoints

Test creating sessions, inspecting state, and simulating completion against your active sandbox.

1. Create Checkout Session

Create Checkout Session

POST

response.json

{

// Click "Send" above to execute this request against the live server.

}

2. Complete Session Simulation

Simulate Buyer Completing Checkout

POST

response.json

{

// Click "Send" above to execute this request against the live server.

}

Production Integration Recipes

Server-side session generation and webhook fulfillment architecture.

Next.js / Node Route (Create Session & Redirect)

typescript

// app/api/checkout/route.ts

import { NextResponse } from 'next/server';

export async function POST(req: Request) {

const { cartItems, userId } = await req.json();

const session = await fetch('https://playground.nileslabs.com/api/v1/checkout/sessions', {

method: 'POST',

headers: { 'Content-Type': 'application/json' },

body: JSON.stringify({

line_items: cartItems.map((item: any) => ({

name: item.title,

amount: item.priceCents,

quantity: item.qty,

})),

mode: 'payment',

success_url: ${process.env.APP_URL}/dashboard?payment=success&session_id={CHECKOUT_SESSION_ID},

cancel_url: ${process.env.APP_URL}/cart,

metadata: { userId },

}),

}).then(res => res.json());

// Redirect buyer to the hosted checkout page

return NextResponse.json({ url: session.url });

}

Webhook Fulfillment Handler

javascript

// Listen for checkout.session.completed

export async function handleWebhook(event) {

if (event.type === 'checkout.session.completed') {

const session = event.data;

const userId = session.metadata?.userId;

const totalAmount = session.amount_total;

console.log(Order fulfilled for user ${userId}, total: ${totalAmount});

// 1. Grant entitlements in your database

await grantProSubscription(userId);

// 2. Receipt email was already dispatched to Virtual Inbox!

}

PreviousOverview & Flowcharts

NextPayment Intents API