App Functions — Test on a Demo Store (preview)

Run a saved function with salla_functions action=preview: it invokes the function server-side against a demo store and returns the response. Use it after save to verify behavior before publishing — no Portal needed.

save and deploy_status also hand back a preview URL. Ignore it: it is authenticated and not client-callable, so action=preview is the way to run the function — it holds the auth that URL needs.

1. Wait for the deploy

save returns a deploy job. The function isn't runnable until that deploy finishes:

• Poll salla_functions action=deploy_status, job (the value action=save returns) → status COMPLETED means ready; FAILED → read failure_reason and fix.
• Or just call salla_functions action=preview — it returns "still deploying … retry in ~30s" until it's ready.