Is there any Shopify custom payment service in the Admin REST API?

Topic summary

Developer using the Shopify Admin REST API wants to programmatically create a custom payment transaction and asks whether an endpoint exists for this, or if Shopify provides any service to support custom payments. The question is tagged “shopify-payments,” suggesting interest in solutions compatible with Shopify’s payment ecosystem.

  • Context: REST API usage; need to initiate/process a custom payment transaction via API.
  • Request: Specific endpoint or alternative service/workflow for custom payments.
  • Technical assets: No code, screenshots, or attachments provided.
  • Outcome: No answers or guidance posted yet; the issue remains open with no identified solution or next steps.
Summarized with AI on December 26. AI used: gpt-5.

I am currently using Shopify programmatically through the REST API. Now, I have a requirement to make a custom payment transaction. Is there any endpoint available for that, or is there any other service related to custom payments available? Thanks in advance!