I need a custom address-capture form added to my Shopify store that collects a full Indian shipping address—street, city, state, and pincode—and checks the pincode against the official India Post API before the customer can move forward. SO AS TO CHECK SERVICIBILTY Here’s exactly what I expect: • The form sits on my designated page (or as a popup/section, whatever fits best) and blends with my current theme. • As soon as the shopper types the pincode and tabs out, your code calls the India Post API. • If the pincode is invalid, an on-page message appears instantly and blocks submission; no page reloads or email loops. • When the pincode is valid the form either moves to the next step in checkout or submits—no extra clicks. • All address data must still be recorded in Shopify’s customer object or the order, just as a native checkout field would. • Clean, well-commented Liquid, JavaScript, and any middleware you add, so future edits are simple. Please stick to Shopify-native tooling (Liquid, ScriptTag, AJAX API) unless an app proxy or lightweight serverless function is unavoidable. I’m comfortable providing API credentials and a dev theme for testing. Once done I’ll verify: – The form captures street, city, state, pincode exactly. – Invalid pincodes trigger your inline error every time. – Valid ones let me complete the mocked checkout flow without hiccups. Let me know your timeframe, any clarifications you need, and we’ll get started right away.