5 Steps to Launch Your Own Virtual Card Program

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Getting Started with Virtual Card Issuance

In the ever-evolving fintech landscape, virtual cards are becoming essential for businesses and consumers alike. With the right APIs, you can set up a comprehensive virtual card program that allows your users to manage spending with enhanced control and security. This post will guide you through the steps of launching your own virtual card program using Stripe Issuing, Marqeta, and Lithic.

Step 1: Choose Your API Provider

Depending on your specific needs, you might want to choose between Stripe Issuing, Marqeta, or Lithic. Each platform has unique strengths:

• Stripe Issuing: Great for those already on the Stripe ecosystem. Offers seamless integration with payments and has robust support for reporting and analytics.
• Marqeta: Known for flexibility in card program design and excellent developer documentation.
• Lithic: Focuses on spending control and issuing capabilities, ideal for those who need granular control over transactions.

Step 2: Set Up Your API Keys

Once you've selected an API provider, the next step is to set up your API keys. You’ll want to store these securely, perhaps using environment variables or a secure vault service. Here’s a quick example of how to set environment variables in a Bash script:

export STRIPE_API_KEY="your_stripe_api_key"
export MARQETA_API_KEY="your_marqeta_api_key"
export LITHIC_API_KEY="your_lithic_api_key"

Step 3: Create a Virtual Card

With your API keys set, it’s time to create a virtual card. Below is a code snippet that demonstrates how to create a virtual card using the Stripe Issuing API:

import requests

stripe_api_key = "your_stripe_api_key"
url = "https://api.stripe.com/v1/issuing/cards"

payload = {
    "cardholder": "cardholder_id",
    "currency": "usd",
    "type": "virtual",
    "spending_controls": {
        "allowed_categories": ["ecommerce"],
        "spending_limits": [
            {
                "amount": 10000,
                "interval": "daily"
            }
        ]
    },
}

response = requests.post(url, auth=(stripe_api_key, ''), data=payload)

if response.status_code == 200:
    print("Virtual card created:", response.json())
else:
    print("Failed to create card:", response.json())

Step 4: Implement Spending Controls

One of the most powerful aspects of virtual cards is the ability to implement spending controls. Using the above code snippet, you can specify allowed categories and set limits on daily spending. This is crucial for businesses wanting to manage employee expenses effectively. However, a non-obvious gotcha here is that the limits are enforced per card, not per cardholder. This means if an employee has multiple cards, they could theoretically exceed limits across different cards unless managed properly.

Step 5: Monitor Transactions

Finally, once your virtual card is issued, it’s important to monitor transactions for fraud and spending compliance. Most APIs, including Stripe and Marqeta, provide webhooks that notify you of events such as successful transactions, declined transactions, and spending limit breaches. Here’s an example of how to set up a webhook listener in Flask to capture these events:

from flask import Flask, request, jsonify

app = Flask(__name__)

@app.route('/webhook', methods=['POST'])
def webhook():
    payload = request.json
    event_type = payload.get('type')
    
    if event_type == 'issuing.card.updated':
        print("Card updated:", payload)
    
    return jsonify(success=True)

if __name__ == "__main__":
    app.run(port=5000)

Conclusion

By following these steps, you can launch your virtual card program confidently. Remember to test thoroughly and monitor transactions to ensure compliance and security. Virtual cards are a powerful tool in the fintech space, and with the right implementation, you can provide a seamless experience for your users.