Editing Openai/69111a25-dab4-8000-8929-8d5e16a9da88 (section)

=== Install: ===

<syntaxhighlight>pip install stripe fastapi uvicorn

</syntaxhighlight>

server.py (minimal example — test mode):

<syntaxhighlight lang="python">from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
import stripe
import os

stripe.api_key = os.getenv("STRIPE_SECRET_KEY")  # set to your test secret key

app = FastAPI()

class PayPayload(BaseModel):
    # 'paymentMethodData' is the object from Google Pay JS response
    token: str   # the raw token string (you will parse from Google Pay response)
    amount: int  # cents
    currency: str = "usd"
    description: str = "Test charge via Google Pay (stripe)"

@app.post("/charge")
async def charge(payload: PayPayload):
    try:
        # For Google Pay + Stripe gateway tokenization, Google Pay returns an object
        # - In web flow, you typically receive <code>paymentData</code> and inside it
        #   <code>paymentMethodData.tokenizationData.token</code> (a JSON string) or token object.
        # Here we expect client to extract the token string and POST it as <code>token</code>.
        token = payload.token

        # Create a PaymentIntent with amount and currency and use the token as payment_method_data
        payment_intent = stripe.PaymentIntent.create(
            amount=payload.amount,
            currency=payload.currency,
            payment_method_types=["card"],
            description=payload.description,
            # confirm immediately using the token
            payment_method_data={
                "type": "card",
                "card": {
                    # Stripe can accept tokenized card details from Google Pay gateway token
                    # Instead of direct raw card number, provide the token as the 'token' parameter
                    "token": token
                }
            },
            confirm=True  # confirm immediately in test
        )

        return {"status": "success", "payment_intent": payment_intent.id, "pi_status": payment_intent.status}
    except stripe.error.CardError as e:
        # handle declined card
        raise HTTPException(status_code=400, detail=str(e.user_message or e))
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))

</syntaxhighlight>

How the front-end should call this:
# Use Google Pay JS to get paymentData.
# Extract the gateway token: paymentData.paymentMethodData.tokenizationData.token
# POST to /charge with { "token": "<that token>", "amount": 1000, "currency": "usd" }

Important:
* Stripe test keys allow real token acceptance in test environment.
* Confirm in Stripe dashboard (test view) that the PaymentIntent shows up and is successful.

If you want a Node.js/Express example I can add it.