UQPAY Python SDK

Official Python SDK for the UQPAY API — a comprehensive payment and card issuing platform.

Requirements

• Python 3.11+

Installation

pip install uqpay

Quick Start

from uqpay import UQPayClient

# Sandbox (for testing)
client = UQPayClient(client_id="your-client-id", api_key="your-api-key", environment="sandbox")

# Production
client = UQPayClient(client_id="your-client-id", api_key="your-api-key", environment="production")

Authentication

The SDK handles OAuth2 authentication automatically. It fetches an access token using your client_id and api_key, caches it, and refreshes it before expiry. You do not need to manage tokens manually.

Configuration

client = UQPayClient(
    client_id="your-client-id",
    api_key="your-api-key",
    environment="sandbox",       # "sandbox" (default) or "production"
    timeout=30.0,                # request timeout in seconds
    max_retries=2,               # automatic retries on transient errors
    log_level="none",            # "none" | "error" | "warn" | "info" | "debug"
    redact_fields=["card_number", "cvc"],
)

Per-request options:

result = client.banking.payouts.create(
    {...},
    request_options={
        "idempotency_key": "unique-key",
        "on_behalf_of": "sub-account-id",
        "timeout": 60,
        "max_retries": 0,
    },
)

Environment Variables

UQPAY_CLIENT_ID=your-client-id
UQPAY_API_KEY=your-api-key

API Coverage

Banking API

Resource	Operations
Balances	List, Retrieve, ListTransactions
Transfers	Create, List, Retrieve
Deposits	List, Retrieve
Beneficiaries	Create, List, Retrieve, Update, Delete, Check
Payouts	Create, List, Retrieve
Virtual Accounts	Create, List
Conversions	CreateQuote, Create, List, Retrieve, ListDates, ListCurrentRates
Payment Methods	List

Issuing API

Resource	Operations
Cardholders	Create, List, Retrieve, Update
Cards	Create, List, Retrieve, Update, UpdateStatus, Recharge, Withdraw, RetrieveOrder, CreatePanToken, GetSecureIframeUrl
Transactions	List, Retrieve
Products	List
Balances	List, Retrieve, ListTransactions
Transfers	Create, Retrieve
Reports	Create, Download
Auth Decision	PGP-based real-time authorization

Connect API

Resource	Operations
Accounts	Create, List, Retrieve
Sub-Accounts	Create
Additional Docs	Get

Payment API

Resource	Operations
Payment Intents	Create, Confirm, Capture, Cancel, List, Retrieve, Update
Refunds	Create, List, Retrieve
Bank Accounts	Create, List, Retrieve, Update
Payouts	Create, List, Retrieve
Balances	List, Retrieve
Attempts	List, Retrieve
Settlements	List

Supporting API

Resource	Operations
Files	Upload, DownloadLinks

Simulator (sandbox only)

Resource	Operations
Issuing	Authorize, Reverse
Deposits	Simulate

Resources

Banking

# Balances
balances = client.banking.balances.list({"page_number": 1, "page_size": 20})
balance = client.banking.balances.retrieve("SGD")
txns = client.banking.balances.list_transactions({"page_number": 1, "page_size": 20})

# Transfers
transfer = client.banking.transfers.create({
    "source_account_id": "acc-123",
    "target_account_id": "acc-456",
    "currency": "SGD",
    "amount": "100.00",
    "reason": "Fund sub-account",
})
transfers = client.banking.transfers.list({"page_number": 1, "page_size": 20})
transfer = client.banking.transfers.retrieve("transfer-id")

# Deposits
deposits = client.banking.deposits.list({"page_number": 1, "page_size": 20})
deposit = client.banking.deposits.retrieve("deposit-id")

# Beneficiaries
beneficiary = client.banking.beneficiaries.create({...})
beneficiaries = client.banking.beneficiaries.list({"page_number": 1, "page_size": 20})
beneficiary = client.banking.beneficiaries.retrieve("ben-id")
client.banking.beneficiaries.update("ben-id", {})
client.banking.beneficiaries.delete("ben-id")
client.banking.beneficiaries.check({...})

# Payouts
payout = client.banking.payouts.create({
    "beneficiary_id": "ben-123",
    "currency": "SGD",
    "amount": "50.00",
    "purpose_code": "PERSONAL",
})
payouts = client.banking.payouts.list({"page_number": 1, "page_size": 20})
payout = client.banking.payouts.retrieve("payout-id")

# Virtual Accounts
va = client.banking.virtual_accounts.create({"currency": "USD"})
vas = client.banking.virtual_accounts.list({"page_number": 1, "page_size": 20})

# Conversions
quote = client.banking.conversions.create_quote({
    "buy_currency": "SGD",
    "sell_currency": "USD",
    "buy_amount": "100.00",
    "conversion_date": "2026-04-15",
})
conversion = client.banking.conversions.create({...})
rates = client.banking.conversions.list_current_rates()
dates = client.banking.conversions.list_dates({"currency_from": "USD", "currency_to": "SGD"})

# Payment Methods
methods = client.banking.payment_methods.list({"country": "US", "currency": "USD"})

Issuing

Cardholders

cardholder = client.issuing.cardholders.create({
    "first_name": "Jane",
    "last_name": "Doe",
    "email": "jane@example.com",
    "phone_number": "+6591234567",
    "country_code": "SG",
    "date_of_birth": "1990-01-15",
})
cardholders = client.issuing.cardholders.list({"page_number": 1, "page_size": 20})
cardholder = client.issuing.cardholders.retrieve("ch-id")
client.issuing.cardholders.update("ch-id", {"first_name": "Updated"})

Cards

card = client.issuing.cards.create({
    "cardholder_id": "ch-id",
    "product_id": "prod-id",
    "card_type": "VIRTUAL",
    "currency": "SGD",
})
cards = client.issuing.cards.list({"page_number": 1, "page_size": 20})
card = client.issuing.cards.retrieve("card-id")
client.issuing.cards.update("card-id", {"metadata": {"order_id": "ord-001"}})
client.issuing.cards.update_status("card-id", {"status": "FROZEN"})

# Recharge and withdraw
client.issuing.cards.recharge("card-id", {"amount": "100.00", "currency": "SGD"})
client.issuing.cards.withdraw("card-id", {"amount": "50.00", "currency": "SGD"})

# Secure card info
result = client.issuing.cards.create_pan_token("card-id")
result = client.issuing.cards.get_secure_iframe_url("card-id")

# Card orders
order = client.issuing.cards.retrieve_order("card-order-id")

Transactions, Products, Balances, Transfers

# Transactions
txns = client.issuing.transactions.list({"page_number": 1, "page_size": 20})
txn = client.issuing.transactions.retrieve("txn-id")

# Products
products = client.issuing.products.list({"page_number": 1, "page_size": 20})

# Issuing balances
balances = client.issuing.balances.list({"page_number": 1, "page_size": 20})
balance = client.issuing.balances.retrieve("SGD")
client.issuing.balances.list_transactions({"page_number": 1, "page_size": 20})

# Issuing transfers
transfer = client.issuing.transfers.create({
    "source_account_id": "master-acc-id",
    "destination_account_id": "sub-acc-id",
    "currency": "SGD",
    "amount": 100,
})
transfer = client.issuing.transfers.retrieve("transfer-id")

# Reports
report = client.issuing.reports.create({
    "report_type": "SETTLEMENT",
    "start_time": "2026-01-01T00:00:00Z",
    "end_time": "2026-04-10T23:59:59Z",
})
csv_data = client.issuing.reports.download(report["report_id"])

Connect

# Accounts
accounts = client.connect.accounts.list({"page_number": 1, "page_size": 20})
account = client.connect.accounts.retrieve("acc-id")
account = client.connect.accounts.create({...})

# Sub-accounts
sub_account = client.connect.sub_accounts.create({...})

# Additional documents
docs = client.connect.additional_docs.get()

Payment

# Payment Intents
intent = client.payment.payment_intents.create({
    "amount": "100.00",
    "currency": "SGD",
    "merchant_order_id": "order-001",
    "return_url": "https://example.com/return",
})
client.payment.payment_intents.confirm(intent["payment_intent_id"], {"payment_method": {...}})
client.payment.payment_intents.capture("pi-id")
client.payment.payment_intents.cancel("pi-id", {"cancellation_reason": "requested_by_customer"})
intents = client.payment.payment_intents.list({"page_number": 1, "page_size": 20})

# Refunds
refund = client.payment.refunds.create({
    "payment_intent_id": "pi-id",
    "amount": "50.00",
    "reason": "requested_by_customer",
})
refunds = client.payment.refunds.list({"page_number": 1, "page_size": 20})
refund = client.payment.refunds.retrieve("refund-id")

# Bank Accounts
bank_account = client.payment.bank_accounts.create({...})
bank_accounts = client.payment.bank_accounts.list({"page_number": 1, "page_size": 20})

# Payouts
payout = client.payment.payouts.create({...})
payouts = client.payment.payouts.list({"page_number": 1, "page_size": 20})

# Balances and Attempts
balances = client.payment.balances.list({"page_number": 1, "page_size": 20})
balance = client.payment.balances.retrieve("SGD")
attempts = client.payment.attempts.list({"page_number": 1, "page_size": 20})
attempt = client.payment.attempts.retrieve("attempt-id")

# Settlements
settlements = client.payment.settlements.list({"page_number": 1, "page_size": 20})

Supporting (File Upload / Download)

with open("document.pdf", "rb") as f:
    result = client.supporting.files.upload(
        file_data=f.read(),
        filename="document.pdf",
        mime_type="application/pdf",
    )

links = client.supporting.files.download_links([result["file_id"]])

Simulator (sandbox only)

The simulator is only available in the sandbox environment and raises SimulatorNotAvailableError in production.

# Simulate a card authorization
result = client.simulator.issuing.authorize({
    "card_id": "card-id",
    "amount": 25.0,
    "currency": "SGD",
    "transaction_status": "APPROVED",
})

# Simulate a reversal
client.simulator.issuing.reverse({
    "card_id": "card-id",
    "transaction_id": result["transaction_id"],
})

# Simulate a deposit
client.simulator.deposits.simulate({
    "currency": "SGD",
    "amount": 500.0,
})

Pagination

All list methods accept page_number and page_size:

page = 1
while True:
    result = client.issuing.cards.list({"page_number": page, "page_size": 50})
    items = result.get("items") or result.get("list") or []
    if not items:
        break
    for card in items:
        print(card["card_id"])
    page += 1

Webhooks

client = UQPayClient(
    client_id="your-client-id",
    api_key="your-api-key",
    webhook_secret="your-webhook-secret",
)

# In your HTTP handler:
from uqpay import UQPayWebhookError

try:
    event = client.webhooks.construct_event(
        raw_body=request.get_data(),
        headers=dict(request.headers),
    )
    print(event["event_type"], event["data"])
except UQPayWebhookError as e:
    return str(e), 400

The verifier checks the HMAC-SHA256 signature and rejects requests with a timestamp older than 300 seconds.

Authorization Decision (PGP)

Handle real-time card authorization decisions. UQPAY sends PGP-encrypted transactions to your endpoint; the SDK decrypts them, calls your handler, and returns an encrypted response.

from uqpay.crypto import generate_auth_decision_key_pair

# Generate a key pair once and store securely
keys = generate_auth_decision_key_pair(name="MyApp", email="ops@example.com")

# Configure at startup
client.issuing.auth_decision.configure(
    private_key=keys["private_key"],
    uqpay_public_key="<UQPAY public key from dashboard>",
)

# Define your decision function
def decide(transaction: dict) -> dict:
    if transaction.get("amount", 0) > 10000:
        return {"response_code": "05"}  # Decline
    return {"response_code": "00", "partner_reference_id": "ref-001"}

# In your HTTP handler:
encrypted_response = client.issuing.auth_decision.handle(
    body=request.get_data(),
    headers=dict(request.headers),
    decide=decide,
)

Error Handling

from uqpay import (
    UQPayError,
    AuthenticationError,
    ForbiddenError,
    NotFoundError,
    ValidationError,
    RateLimitError,
    ServerError,
)

try:
    balance = client.banking.balances.retrieve("SGD")
except AuthenticationError as e:
    print(f"Authentication failed: {e.message}")
except ForbiddenError as e:
    print(f"Access denied: {e.message}")
except NotFoundError as e:
    print(f"Not found: {e.message}")
except ValidationError as e:
    print(f"Validation error [{e.code}]: {e.message}")
except RateLimitError as e:
    print(f"Rate limited (HTTP {e.http_status})")
except ServerError as e:
    print(f"Server error: {e.message}")
except UQPayError as e:
    print(f"{e.type}: {e.message} (HTTP {e.http_status})")

All errors expose: message, code, type, http_status, idempotency_key.

Testing

pip install -e ".[dev]"
cp .env.example .env  # fill in sandbox credentials
pytest tests/ -v

# Skip integration tests
SKIP_INTEGRATION_TESTS=true pytest tests/ -v

Documentation

• UQPAY API Reference

License

This project is licensed under the MIT License — see the LICENSE file for details.