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For developers

Add payments to anything you build

Leapa’s API and widgets are the fastest way to take money inside your own product — from a weekend side project to a service billing millions of customers.

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const endpoint = 'https://api.leapa.co/v2/invoices'
const response = await fetch(endpoint, {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    Authorization: 'Bearer YOUR_SECRET_KEY'
  },
  body: JSON.stringify({
    customer_id: 'cus_8f2a1c',
    description: 'Room 12, two nights',
    due_date: '2026-10-01',
    products: [{ product_id: 'prod_5d91e0', quantity: 2 }]
  })
})
const invoice = await response.json()

What you can build with Leapa

Four groups of endpoints cover the money a product moves: taking it, sending it, remembering who paid, and billing them again.

  • Charges and refunds

    Debit a customer in several currencies, hold the funds and take them later, and refund a disputed charge.

  • Transfers and payouts

    Move your balance to another Leapa account or out to your bank, on your own schedule.

  • Customers and payment methods

    Create and update customer records and the cards and accounts they pay with.

  • Invoices and recurring payments

    Generate and send an invoice once, or on a schedule, and get paid against it.

Three ways in, and you pick the one you want

Every route reaches the same payments. They differ only in how much of your own code sits in front of them.

  • No code

    WooCommerce plugin

    Search for Leapa in your WordPress plugins, activate it and paste in a key. Nothing in your theme changes.

    Install the plugin

  • One HTML element

    Payment widget

    Drop one custom element into your page and a payment form appears inside it. Card numbers go straight to Leapa, never through your server.

    Add the widget

  • Full control

    REST API

    Call Leapa from your own backend to charge a card, bill a customer and pay yourself out. Everything starts with a key.

    Get your API keys