Start a flow from any other system
An Auto Flow can now be started by a webhook — give any tool that can send data a URL, and it starts the flow for the right customer with the details it sent already filled in.
Released 19 August 2026
Until now a flow could only start from something that happened inside WA.cr — a message, a tag, a store order. There is now a trigger for everything else: Webhook received. Anything that can send data to a web address can start your flow.
What's new
- Your own URL, per trigger. Pick Webhook received as the start of a flow and you get a web address to hand to the other system — Zapier, Make, n8n, your payment provider, your own website or back office. When they send data to it, the flow runs.
- Test it before you go live. The URL works from the moment you add the step, not from the moment you publish. Send one real message from the other system and WA.cr shows you exactly what arrived — then you pick the fields off that, instead of guessing what they are called.
- The details come with it. Whatever was sent is ready to use in the steps that follow, so you can write "Thanks — your booking on {{var.hook_date}} is confirmed" without any setup. Fields buried deeper in the data can be given a name of your own to use the same way.
- It knows who to message. You tell it which field holds the customer's phone number, email address, or the id your other system uses for them. Someone new is added to Contacts automatically — or you can accept only people you already have.
Worth knowing
- A flow always runs for a person. If nothing in the data identifies a customer, nothing starts — and the step tells you so, rather than failing quietly.
- Nothing is lost while you are still setting up. Messages that arrive before the flow is published are still shown to you, so you can finish mapping the fields and then turn it on.
- You can lock it down. Turn on signed calls and only the system holding your secret can start the flow. The URL and the secret can both be re-issued at any time if one ever gets out — the old one stops working immediately.
- Your usual rules still apply. Someone who has opted out is never messaged, and how often the same person can re-enter the flow is still set by the flow itself.