One Time Payments

Understanding One Time Payments

A one time payment represents a single, non-recurring transaction between you and your customer. One-time products can be paid, where the customer is charged once for the full amount, or free, where the product has a 0 price and no payment is collected.

Key Concepts

Payment Status

A payment can be in different states throughout its lifecycle:

Pending: The payment has been initiated but not yet completed
Paid: The payment has been successfully processed
Refunded: The payment has been refunded to the customer
Partially Refunded: The payment has been partially refunded to the customer

Creating a One Time Payment

To create a one time payment:

Create a one-time product in your Creem dashboard (set billing type to “one-time”)
Generate a checkout session for the payment
Direct your customer to the checkout URL

Next.js
TypeScript SDK
Better Auth
REST API

"use client"; // Optional: Works with server components

import { CreemCheckout } from "@creem_io/nextjs";

export function BuyButton() {
  return (
    <CreemCheckout
      productId="prod_YOUR_PRODUCT_ID"
      metadata={{
        customerId: "cust_123",
        source: "web",
      }}
    >
      <button>Buy Now</button>
    </CreemCheckout>
  );
}

Next.js SDK Documentation

Learn more about the Next.js adapter and advanced features.

import { Creem } from "creem";

const creem = new Creem({
  apiKey: process.env.CREEM_API_KEY!,
  server: process.env.NODE_ENV === "production" ? "prod" : "test",
});

// Create a one-time payment checkout session
const checkout = await creem.checkouts.create({
  productId: "prod_YOUR_PRODUCT_ID",
  successUrl: "https://yoursite.com/success",
  metadata: {
    customerId: "cust_123",
    source: "web",
  },
});

// Redirect to the checkout URL
console.log(checkout.checkoutUrl);

TypeScript SDK Documentation

View the full SDK API reference and advanced usage examples.

"use client";

import { authClient } from "@/lib/auth-client";

export function BuyButton({ productId }: { productId: string }) {
  const handleCheckout = async () => {
    const { data, error } = await authClient.creem.createCheckout({
      productId,
      successUrl: "/thank-you",
      metadata: {
        source: "web"
      },
    });

    if (data?.url) {
      window.location.href = data.url;
    }
  };

  return (
    <button onClick={handleCheckout}>
      Buy Now
    </button>
  );
}

Better Auth Integration

Learn about database persistence and automatic user synchronization.

If you’re in test mode, use https://test-api.creem.io instead of https://api.creem.io. Learn more about Test Mode.

curl -X POST https://api.creem.io/v1/checkouts \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "product_id": "prod_YOUR_PRODUCT_ID",
    "request_id": "order_123",
    "success_url": "https://yoursite.com/success",
    "metadata": {
      "customerId": "cust_123",
      "source": "web"
    }
  }'

Response

{
  "id": "ch_1QyIQDw9cbFWdA1ry5Qc6I",
  "checkout_url": "https://checkout.creem.io/ch_1QyIQDw9cbFWdA1ry5Qc6I",
  "product_id": "prod_YOUR_PRODUCT_ID",
  "status": "pending"
}

API Reference

View the complete endpoint documentation with all available parameters.

Handling Successful Payments

After a successful payment, users are redirected to your success_url with payment details as query parameters:

https://yoursite.com/success?checkout_id=ch_xxx&order_id=ord_xxx&customer_id=cust_xxx&product_id=prod_xxx

Query parameter	Description
`checkout_id`	The ID of the checkout session created for this payment.
`order_id`	The ID of the order created after successful payment.
`customer_id`	The customer ID, based on the email that executed the successful payment.
`product_id`	The product ID that the payment is related to.
`request_id`	Optional. The request/reference ID you provided when creating this checkout.
`signature`	All previous parameters signed by Creem using your API-key, verifiable by you.

For production applications, we recommend using Webhooks to handle payment events.

Managing Payments

Creem provides several payment management features:

Refund payments: Process full or partial refunds directly through the Creem Dashboard
Payment history: View detailed transaction history
Payment metadata: Add custom data to payments for tracking
Custom fields: Collect additional information during checkout

Checkout Customization

Brand your checkout with custom colors, logos, and themes

Checkout Custom Fields

Collect additional information from customers during checkout

Discount Codes

Create and apply discount codes to your one-time payments

Webhooks

Handle payment events and automate your workflow

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For Customers

One Time Payments

Understanding One Time Payments

Key Concepts

Payment Status

Creating a One Time Payment

Next.js SDK Documentation

TypeScript SDK Documentation

Better Auth Integration

Response

API Reference

Handling Successful Payments

Managing Payments

Checkout Customization

Checkout Custom Fields

Discount Codes

Webhooks

​Understanding One Time Payments

​Key Concepts

​Payment Status

​Creating a One Time Payment

Next.js SDK Documentation

TypeScript SDK Documentation

Better Auth Integration

​Response

API Reference

​Handling Successful Payments

​Managing Payments

Checkout Customization

Checkout Custom Fields

Discount Codes

Webhooks

Understanding One Time Payments

Key Concepts

Payment Status

Creating a One Time Payment

Response

Handling Successful Payments

Managing Payments