I already sell through a ManyChat-based flow, but I need to tighten the checkout experience. Before the bot shows the payment link I want it to collect one extra piece of Order details—Special instructions, specifically the Custom messages for products my buyers like to add. The question set should appear naturally in the existing conversation, store the responses in user fields, and pass them on to Stripe as metadata so I see them on each charge. Once the user pays, I want a lightweight server (cloudzy) that listens for Stripe webhooks, verifies the signature, and then notifies ManyChat through their External Request step so the bot can send a confirmed-payment message and fulfilment info. The server must gracefully handle retries and log failed events for easy debugging. Deliverables • Updated ManyChat flow with the new “Custom message” prompt and field mapping • Secure Stripe webhook endpoint connected to my Stripe account and ManyChat External Request • Brief setup notes (env variables, webhook secret, how to deploy on Heroku/Vercel) Everything should be production-ready, tested end-to-end, and handed over with clear instructions so I can replicate the setup in other bots later on.