Payment Links vs API Integration: Which Should You Use?
Payment links get you selling in minutes with zero code, while an API integration gives you full checkout control. Here's how to choose — and when to use both.
Every merchant eventually faces the same question: do I need a real payments integration, or can I just send a link? The honest answer is that both are production-grade tools — they just solve different problems.
What payment links are great at
A payment link is a hosted card checkout page behind a short URL. You set the amount (or let the customer choose) and share the link by email, chat, social media, or an invoice PDF.
- Zero code — create one from the dashboard in under a minute.
- Perfect for invoices, deposits, donations, and social selling.
- Customers pay securely with any major credit or debit card.
- Built-in receipt and confirmation flow.
When you need the API
If payments are part of your product — a SaaS subscription flow, an e-commerce cart, a marketplace — you want payments created programmatically with your own order metadata attached.
- Create payments server-side with idempotency keys so retries never double-charge.
- Attach order IDs and metadata that come back in every webhook.
- Embed checkout in your own UI with the JavaScript SDK.
- Reconcile automatically: webhook events drive order fulfillment with no manual steps.
The decision in one sentence
If a human kicks off the payment, use a link. If software kicks off the payment, use the API.
Use both — most merchants do
A typical pattern: the API powers your website checkout, while payment links handle the long tail — custom quotes, one-off services, and that customer who wants to pay over the phone. With ZeroGateway, both routes share the same dashboard, ledger, fees, and webhooks, so there's nothing extra to reconcile.