pinelabs-online-p3p-server-sdk 0.1.4

Pine Labs Online P3P Server SDK — x402 Pine Labs Online P3P server middleware (Python)

Pine Labs Online P3P Server SDK (Python)

Python SDK for Pine Labs Online P3P server integrations. It mirrors p3p-server-sdk, creates mandates, generates HTTP 402 payment challenges, verifies client credentials, captures payments through P3P, and builds Payment-Receipt headers.

Installation

pip install pinelabs-online-p3p-server-sdk[flask]
pip install pinelabs-online-p3p-server-sdk[fastapi]

Import module: pinelabs_p3p_server. Requires Python 3.9 or newer.

Config

from pinelabs_p3p_server import (
    P3PEnvironment,
    PaymentGateway,
    PaymentMethod,
    PineLabsOnlineServerConfig,
)

config = PineLabsOnlineServerConfig(
    clientId="...",
    clientSecret="...",
    env=P3PEnvironment.SANDBOX,
    paymentGateway=PaymentGateway.PineLabsOnline,
    availablePaymentMethods=[PaymentMethod.UPI_RESERVE_PAY, PaymentMethod.Crypto],
)

clientId and clientSecret are used internally for POST /api/auth/v1/token. The local challenge HMAC key is derived internally from clientSecret with a stable SDK prefix, so there is no separate challenge-signing config field. The SDK caches and refreshes bearer tokens before expiry. env selects the Pine Labs host used for auth and /mpp/v1/* service calls.

Environment defaults:

Env	URL	Timeout	Retries	Initial retry delay
P3PEnvironment.SANDBOX	https://pluraluat.v2.pinepg.in	60000 ms	2	300 ms
P3PEnvironment.PRODUCTION	https://api.pluralpay.in	45000 ms	2	200 ms

Mandates

from pinelabs_p3p_server import Amount, CreateMandateOptions, PineLabsOnlineP3P

p3p = PineLabsOnlineP3P.create(config)
mandate = p3p.create_mandate(CreateMandateOptions(
    mobileNumber="9876543210",
    customerReference="9876543210",
    amount=Amount(value=100000, currency="INR"),
    paymentMethod=PaymentMethod.UPI_RESERVE_PAY,
    validityInDays=20,
))

This maps to POST /mpp/v1/pre-authorize and sends customer.mobile_number.

Paid Resource Flow

from flask import Flask, jsonify
from pinelabs_p3p_server import Amount, ChargeOptions
from pinelabs_p3p_server.flask_mw import payment_required

app = Flask(__name__)

@app.get("/api/premium")
@payment_required(config, ChargeOptions(
    amount=Amount(value=50000, currency="INR"),
    resource="/api/premium",
))
def premium():
    return jsonify({"data": "premium content"})

The middleware reads P3P-Credential: Payment <payload>, not Authorization, so it does not conflict with application bearer auth.

Capture

from pinelabs_p3p_server import CaptureOptions

result = p3p.capture(CaptureOptions(
    token="MPP_TOK_123",
    amount=Amount(value=50000, currency="INR"),
    paymentMethod=PaymentMethod.UPI_RESERVE_PAY,
    customerReference="9876543210",
    mobileNumber="9876543210",
    challengeId="ch_123",
    merchantOrderReference="order-123",
))

The debit body uses customer.mobile_number, payment_amount, payment_token, and challenge_id. The SDK sends Idempotency-Key and does not send Merchant-ID.

If /mpp/v1/debit returns 202 Accepted, the SDK treats that as an accepted-but-processing debit:

• retries the same debit with the same Idempotency-Key
• respects Retry-After when Pine Labs returns it
• falls back to initialRetryDelayMs otherwise
• counts those pending retries against maxRetries

If pending retries are exhausted and the debit is still non-terminal, the SDK returns a pending result and the middleware should return 202 without serving the protected resource.

Generic Middleware Helper

from pinelabs_p3p_server.server.middleware import decide_payment

decision = decide_payment(
    credential_header=request.headers.get("P3P-Credential"),
    config=config,
    charge_options=ChargeOptions(
        amount=Amount(value=50000, currency="INR"),
        resource="/api/premium-data",
    ),
)

To reconcile a pending debit later, use the status lookup helper:

latest = p3p.get_debit_status("idem_key_123")

This calls GET /mpp/v1/debit/{id} and returns the same debit payload family as the original debit call, so application code can resolve pending payments by idempotency key.

License

MIT