Content-Type: application/json
Date: {GMT Time}
Authorization: Signature ...

{
  "order_id": "10290d05-xxxx",
  "request_id": "your request_id",
  "checkout_url": "https://checkout.infini.money/pay/xxxx",
  "client_reference": "client_reference"
}

{
  "order_id": "ord-123",
  "status": "processing",
  "pay_status": "processing",
  "amount": "100",
  "currency": "USD",
  "amount_confirming": "0",
  "amount_confirmed": "0.5",
  "expires_at": 1763512195,
  "created_at": 1763512000,
  "exception_tags": ["wrong_currency"],
  "client_reference": "ORDER-001"
}

{
  "order_id": "ord-123",
  "checkout_url": "https://checkout.infini.money/pay/xxxx"
}

{
  "payment_id": "pay-123",
  "amount": "100.00",
  "address": "0x1234567890abcdef1234567890abcdef12345678",
  "expires_at": 1763512195
}

{
  "chain": "ETHEREUM",
  "token_type": "USDT",
  "amount": "6",
  "wallet_address": "0x5f716e5775b18409917e2a2f0762d29d6c385cb0",
  "note": "123"
}

{"code":0,"message":"","data":{"request_id":"e94b4e88-36c2-4550-907e-839742cf5fae"}}

Content-Type: application/json
Date: {GMT Time}
Authorization: Signature ...

{
  "order_id": "10290d05-xxxx",
  "request_id": "your request_id",
  "client_reference": "client_reference",
  "checkout_url": "https://checkout.infini.money/subscription/xxxx",
  "token": "eyJhbGciOiJIUzI1NiIs...",
  "subscription": {
    "subscription_id": "sub-xxxx",
    "merchant_sub_id": "msub_001",
    "status": "pending"
  }
}

{
  "subscription_id": "sub-xxxx",
  "merchant_sub_id": "msub_001",
  "plan_name": "Monthly Plan",
  "trigger_method": "invoice",
  "status": "active",
  "currency": "USD",
  "first_amount": "10.00",
  "amount": "9.99",
  "interval_unit": "MONTH",
  "interval_count": 1,
  "current_period_start": 1740000000,
  "current_period_end": 1742678400,
  "subscription_end_at": 0,
  "next_invoice_at": 1742592000,
  "payer_email": "user@example.com",
  "created_at": 1740000000,
  "updated_at": 1740000100
}

{
  "subscription_id": "sub-xxxx",
  "merchant_sub_id": "msub_001",
  "status": "canceled",
  "canceled_at": 1742678400,
  "cancel_reason": "by_merchant_api"
}

{
  "event": "order.completed",
  "order_id": "ord-123",
  "client_reference": "ORDER-001",
  "amount": "100",
  "currency": "USD",
  "status": "paid",
  "amount_confirmed": "100",
  "amount_confirming": "0",
  "created_at": 1763512195,
  "updated_at": 1763512573,
  "exception_tags": []
}

{
  "event": "subscription.update",
  "subscription_id": "sub-xxxx",
  "merchant_sub_id": "msub_001",
  "plan_name": "Monthly Plan",
  "trigger_method": "invoice",
  "status": "active",
  "currency": "USD",
  "amount": "9.99",
  "interval_unit": "MONTH",
  "interval_count": 1,
  "payer_email": "user@example.com",
  "current_period_start": 1740000000,
  "current_period_end": 1742678400,
  "next_invoice_at": 1742592000,
  "cancel_reason": "by_merchant_api",
  "canceled_at": 1742678400,
  "created_at": 1740000000,
  "updated_at": 1740000100
}

{
  "code": 40001,
  "message": "Invalid request",
  "detail": "expires_at must be greater than current timestamp"
}

import hmac, hashlib, base64, time
from datetime import datetime, timezone
import requests

key_id = "merchant-001-prod"
secret_key = b"your-secret-key"

def create_order(amount):
method = "POST"
path = "/v1/acquiring/order"
gmt_time = datetime.now(timezone.utc).strftime('%a, %d %b %Y %H:%M:%S GMT')

signing_string = f"{key_id}\n{method} {path}\ndate: {gmt_time}\n"
signature = base64.b64encode(
hmac.new(secret_key, signing_string.encode(), hashlib.sha256).digest()
).decode()

response = requests.post(
f"https://openapi.infini.money{path}",
json ={
"amount": amount,
"currency": "USD",
"client_reference": "ORDER-2024-001",
"description": "Product purchase",
"expires_at": int(time.time()) + 3600
},
headers ={
"Date": gmt_time,
"Authorization": f'Signature keyId="{key_id}",algorithm="hmac-sha256",headers="@request-target date",signature="{signature}"',
"Content-Type": "application/json"
}
)

response.raise_for_status()
return response.json()

@app.route('/create-payment', methods =['POST'])
def create_payment():
order = create_order(amount = request.json['amount'])
return {"checkout_url": order["checkout_url"]}

@app.route('/webhook', methods = ['POST'])
def handle_webhook():
event = request.json

if event['event'] == 'order.completed':
process_fulfillment(event['order_id'], event['amount_confirmed'])
elif event['event'] == 'order.processing':
update_order_progress(event['order_id'], event['status'])
elif event['event'] == 'order.expired':
mark_order_expired(event['order_id'])

return {"status": "ok"}

def reissue_checkout_token(order_id):
method = "POST"
path = "/v1/acquiring/token/reissue"
gmt_time = datetime.now(timezone.utc).strftime('%a, %d %b %Y %H:%M:%S GMT')

signing_string = f"{key_id}\n{method} {path}\ndate: {gmt_time}\n"
signature = base64.b64encode(
hmac.new(secret_key, signing_string.encode(), hashlib.sha256).digest()
).decode()

response = requests.post(
f"https://api.infini.money{path}",
json ={"order_id": order_id},
headers ={
"Date": gmt_time,
"Authorization": f'Signature keyId="{key_id}",algorithm="hmac-sha256",headers="@request-target date",signature="{signature}"',
"Content-Type": "application/json"
}
)

response.raise_for_status()
return response.json()