Hosted Gateway

The Hosted Gateway is the fastest integration path. After creating a payment intent, redirect the buyer to Ababil’s hosted checkout page. Ababil handles the full payment experience — wallet connect (MetaMask, Coinbase Wallet, Phantom), chain selection, EIP-3009 signing, on-chain settlement, and post-payment confirmation. You write: ~10 lines of backend code. Ababil handles: Everything else.

The Hosted Gateway requires a browser wallet. For AI agents paying programmatically, use the Custom Integration path instead.

Flow

Merchant backend
  → POST /api/v1/x402/intents { amount_usdc, redirect_url, cancel_url }
  ← { checkout_url: "https://testnetv1.ababilpay.xyz/pay/{id}" }

Redirect buyer to checkout_url
  → Buyer connects wallet, selects chain, signs EIP-3009 authorization
  → Ababil verifies signature and settles on-chain
  → Ababil redirects buyer to redirect_url?intent_id={id}

Merchant backend confirms payment:
  → GET /api/v1/x402/intents/{id}
  ← { status: "paid", tx_hash: "0x...", paid_at: "..." }

Step 1 — Create Intent

POST https://testnetv1.ababilpay.xyz/api/v1/x402/intents
Authorization: Bearer sk_test_...
Content-Type: application/json

Request Body

Field	Type	Required	Description
`amount_usdc`	number	✓	Payment amount in USDC. E.g. `29.99`.
`redirect_url`	string	✓	Where to send the buyer after successful payment.
`cancel_url`	string		Where to send the buyer if they cancel.
`description`	string		Human-readable label shown on the checkout page.
`order_id`	string		Your internal order reference for reconciliation.
`metadata`	object		Arbitrary key-value pairs stored on the intent.

{
  "amount_usdc":  29.99,
  "description":  "Pro Plan — 1 month",
  "order_id":     "order_8821",
  "redirect_url": "https://yourstore.com/order/success",
  "cancel_url":   "https://yourstore.com/cart",
  "metadata":     { "customer_id": "usr_123" }
}

Response `201`

{
  "success": true,
  "data": {
    "intent_id":    "d03e0751-5a79-4b33-aa0e-d33dee344f27",
    "status":       "pending",
    "amount_usdc":  29.99,
    "order_id":     "order_8821",
    "checkout_url": "https://testnetv1.ababilpay.xyz/pay/d03e0751-5a79-4b33-aa0e-d33dee344f27",
    "expires_at":   "2026-05-25T13:00:00Z"
  }
}

Redirect the buyer to checkout_url. Intents expire after 30 minutes.

Step 2 — Redirect the Buyer

After receiving the checkout_url, redirect the buyer immediately:

const BASE = "https://testnetv1.ababilpay.xyz"

async function createCheckout(orderId, amountUsdc) {
  const res = await fetch(`${BASE}/api/v1/x402/intents`, {
    method: "POST",
    headers: {
      "Authorization": "Bearer sk_test_...",
      "Content-Type":  "application/json",
    },
    body: JSON.stringify({
      amount_usdc:  amountUsdc,
      description:  "Pro Plan — 1 month",
      order_id:     orderId,
      redirect_url: "https://yourstore.com/order/success",
      cancel_url:   "https://yourstore.com/cart",
    }),
  })

  const { data } = await res.json()
  return data.checkout_url  // → redirect buyer to this URL
}

import requests

BASE = "https://testnetv1.ababilpay.xyz"

def create_checkout(order_id: str, amount_usdc: float) -> str:
    res = requests.post(
        f"{BASE}/api/v1/x402/intents",
        headers={
            "Authorization": "Bearer sk_test_...",
            "Content-Type": "application/json",
        },
        json={
            "amount_usdc":  amount_usdc,
            "description":  "Pro Plan — 1 month",
            "order_id":     order_id,
            "redirect_url": "https://yourstore.com/order/success",
            "cancel_url":   "https://yourstore.com/cart",
        },
    )
    res.raise_for_status()
    return res.json()["data"]["checkout_url"]  # redirect buyer here

Step 3 — Confirm Payment

After the buyer is sent back to your redirect_url, poll the intent status before fulfilling the order.

Always verify via the API. The redirect URL fires on success but can be interrupted (browser close, network drop). Never fulfil an order based on the redirect alone — confirm status: "paid" via GET /api/v1/x402/intents/{id} first.

async function waitForPayment(intentId, timeoutMs = 120_000) {
  const deadline = Date.now() + timeoutMs

  while (Date.now() < deadline) {
    const res = await fetch(`${BASE}/api/v1/x402/intents/${intentId}`, {
      headers: { "Authorization": "Bearer sk_test_..." },
    })
    const { data } = await res.json()

    if (data.status === "paid")    return data              // ✅ fulfil order
    if (data.status === "expired") throw new Error("Payment expired")

    await new Promise((r) => setTimeout(r, 3000))           // poll every 3s
  }

  throw new Error("Timeout waiting for payment")
}

Poll interval: Every 3–5 seconds. Settlement is typically 1–10 seconds depending on chain. A paid intent response includes:

Field	Description
`status`	`"paid"`
`tx_hash`	On-chain transaction hash
`buyer_address`	Buyer wallet address
`chain`	CAIP-2 chain the payment settled on
`paid_at`	ISO 8601 settlement timestamp

Overview

Integration paths

Endpoints

AI agents

Reference

Flow

Step 1 — Create Intent

Request Body

Response `201`

Step 2 — Redirect the Buyer

Step 3 — Confirm Payment

​Flow

​Step 1 — Create Intent

​Request Body

​Response 201

​Step 2 — Redirect the Buyer

​Step 3 — Confirm Payment

Flow

Step 1 — Create Intent

Request Body

Response `201`

Step 2 — Redirect the Buyer

Step 3 — Confirm Payment