Is there any Free shipping option to exclude shipping method?

Currently, our app uses Shopify's official Discount API, which does not include an option to select specific shipping methods. You may want to explore two alternatives:

Set shipping rates in the free shipping discount code created by our app.

Configure shipping rates in the Shopify admin using conditional pricing: https://help.shopify.com/en/manual/fulfillment/setup/shipping-profiles/setting-up-shipping-profiles

Should you have any further concerns, please do not hesitate to contact us directly at [email protected]