Webhook

An API is a door you knock on: your software asks 'any new orders?' and gets an answer. A webhook is a doorbell: the store rings you the moment an order exists, sending a small JSON payload (order number, customer, items, payment method) to an address you registered. Salla, Zid, Shopify, WooCommerce, Paymob, PayTabs, HubSpot, Zoho and most POS and clinic systems support webhooks for their key events. The receiving side verifies the signature, records the event, and triggers whatever should happen next.

For AI agents, webhooks are the trigger side of automation. Order created with COD payment: send the confirmation template. Cart abandoned: start the recovery flow. Shipment delivered: ask for a review or an upsell. Appointment booked in the clinic system: schedule the reminder two days out. Payment failed in Paymob: message the customer with a fresh link. Without webhooks the agent only knows what customers tell it; with them it knows what the business's systems know, at the moment they know it.

Operational details worth asking about: Does the integration retry when your server is briefly down, or is the event lost? Are duplicate deliveries handled so a customer is not messaged twice? Are payloads signed and checked, since a forged 'order paid' event is a real attack? Is there a log the operations team can read when a customer says 'I never got the message'? Nano AI's integration layer treats these as standard requirements; every event that drives a customer message is logged end to end so the answer to 'why did the agent send this?' is always available.