New payment gatway app

Shopify Apps
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Topic summary

A developer seeks guidance on creating a custom payment gateway app for Shopify but cannot locate consolidated documentation.

Key questions include:

  • Account requirements: Clarification needed on whether a Shopify Plus subscription ($2,500/month) is mandatory for payment app development
  • Technical implementation: How to configure gateway settings (API keys, webhooks), add the payment option to checkout pages, handle user redirection to payment links, and manage return URLs

The developer is looking for official documentation or resources that address these requirements in one place. The discussion remains open with no responses yet.

Summarized with AI on November 1. AI used: claude-sonnet-4-5-20250929.
1

Hi,

I am unable to find the required details at a single place.

I wanted to create a payment app for a payment gateway provider. For this what kind of subscription/account type will be required.

As some are suggested that we need shopify plus account for this which will cost $2500 for a month?

Can someone please help me finding the correct links or documentation for:

  1. To create a new custom payment gateway,
  2. The payment gateway will have settings to setup keys and webhooks
  3. On checkout page: how to add new option for this new XYZ payment gateway
  4. How to redirect user to payment link after the checkout
  5. The return url where user will land.

Thanks