Create payment intent

curl --request POST \
  --url http://api-sandbox.fexpayments.com/merchant/api/v1/payment-intents \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "amount": 99.99,
  "currency": "USD",
  "description": "Coffee and pastry"
}
'

{
  "success": true,
  "payment_intent": {
    "id": "a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11",
    "merchant_id": "74815c83-e47b-4dc5-aefe-abe4484dd280",
    "amount": 99.99,
    "currency": "USD",
    "status": "pending",
    "expires_at": "2026-02-24T14:30:00Z",
    "merchant_name": "Whole Foods Market",
    "description": "Coffee and pastry",
    "qr_code_url": "data:image/png;base64,iVBORw0KGgo...",
    "qr_data": "{\"payment_intent_id\":\"abc123\",\"amount\":99.99,\"currency\":\"USD\",\"merchant_id\":\"...\",\"merchant_name\":\"Whole Foods Market\"}",
    "target_wallet_id": "8566959d-f366-45d9-9e6e-241ba189988f",
    "completed_by": "d9f3a2b1-c4e5-6789-abcd-ef0123456789",
    "refund_status": "pending",
    "refund_ledger_tx_id": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
    "counter_id": "c1d2e3f4-a5b6-7890-abcd-ef1234567890",
    "reference": "ORD-12345",
    "callback_url": "https://shop.example.com/orders/ORD-12345/payment-callback",
    "metadata": {
      "customer_email": "alice@example.com",
      "cart_id": "cart-abc123"
    },
    "created_at": "2026-02-24T14:00:00Z",
    "updated_at": "2026-02-24T14:00:00Z"
  }
}

{
  "success": false,
  "error": "Amount must be greater than 0"
}

{
  "success": false,
  "error": "Unauthorized"
}

{
  "success": false,
  "error": "Failed to create payment intent"
}

POST

merchant

api

payment-intents

curl --request POST \
  --url http://api-sandbox.fexpayments.com/merchant/api/v1/payment-intents \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "amount": 99.99,
  "currency": "USD",
  "description": "Coffee and pastry"
}
'

{
  "success": true,
  "payment_intent": {
    "id": "a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11",
    "merchant_id": "74815c83-e47b-4dc5-aefe-abe4484dd280",
    "amount": 99.99,
    "currency": "USD",
    "status": "pending",
    "expires_at": "2026-02-24T14:30:00Z",
    "merchant_name": "Whole Foods Market",
    "description": "Coffee and pastry",
    "qr_code_url": "data:image/png;base64,iVBORw0KGgo...",
    "qr_data": "{\"payment_intent_id\":\"abc123\",\"amount\":99.99,\"currency\":\"USD\",\"merchant_id\":\"...\",\"merchant_name\":\"Whole Foods Market\"}",
    "target_wallet_id": "8566959d-f366-45d9-9e6e-241ba189988f",
    "completed_by": "d9f3a2b1-c4e5-6789-abcd-ef0123456789",
    "refund_status": "pending",
    "refund_ledger_tx_id": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
    "counter_id": "c1d2e3f4-a5b6-7890-abcd-ef1234567890",
    "reference": "ORD-12345",
    "callback_url": "https://shop.example.com/orders/ORD-12345/payment-callback",
    "metadata": {
      "customer_email": "alice@example.com",
      "cart_id": "cart-abc123"
    },
    "created_at": "2026-02-24T14:00:00Z",
    "updated_at": "2026-02-24T14:00:00Z"
  }
}

{
  "success": false,
  "error": "Amount must be greater than 0"
}

{
  "success": false,
  "error": "Unauthorized"
}

{
  "success": false,
  "error": "Failed to create payment intent"
}

Authorizations

Authorization

string

header

required

Keycloak JWT. Roles: admin (platform admin — can register merchants, act on behalf of any merchant), merchant (dashboard user — scoped to their own merchant_id via user attribute mapper), POS terminals use client credentials flow with merchant_id injected via protocol mapper.

Body

application/json

amount

number<double>

required

Required range: x >= 0.01

Example:

99.99

currency

string

default:USD

Example:

"USD"

description

string

Example:

"Coffee and pastry"

expires_in

integer

default:1800

Seconds until expiration (default: 1800)

Required range: x >= 60

Example:

1800

counter_id

string<uuid> | null

POS terminal (counter) that created this intent. When set, the counter's webhook_url is used for delivery if no callback_url is provided.

Example:

"c1d2e3f4-a5b6-7890-abcd-ef1234567890"

reference

string | null

Merchant's own order or invoice ID. Stored for correlation and returned in webhook payload.

Example:

"ORD-12345"

callback_url

string<uri> | null

Per-intent webhook override. Takes priority over counter and merchant-level webhooks. Useful for ecommerce flows where each order has its own callback.

Example:

"https://shop.example.com/orders/ORD-12345/payment-callback"

metadata

object | null

Arbitrary JSON object stored with the intent and forwarded verbatim in the webhook payload.

Example:

{
  "customer_email": "alice@example.com",
  "cart_id": "cart-abc123"
}

Response

Payment intent created successfully

success

boolean

Example:

true

payment_intent

object

Show child attributes

List payment intents Get payment intent

Onboarding

API Reference

Payment Intents

Counters

Admin

Public

Authorizations

Body

Response