Introduction

Shopify Flow is powerful, but it only reacts to events inside Shopify. Flow Webhooks removes that limitation. It gives you a secure URL endpoint that external systems can POST to and when they do, your Shopify Flow workflow fires instantly, with the payload data passed in as usable variables.

Flow_Webhooks_Introduction

How it works

Your external tool sends an HTTP POST to your webhook URL with a JSON payload
(e.g. name, email, question). Works with n8n, Make, Zapier, or any HTTP-capable tool.
Flow Webhooks receives it, authenticates the request, logs it with full headers
and payload, then fires the linked Shopify Flow trigger.
Shopify Flow runs your automation tag a customer, send an email, update a
metafield using the payload data as named variables ({{fieldOne}}, {{fieldTwo}}, {{fieldThree}}, {{fieldFour}}) or you can also send some additional data if you mark the checkbox in the Flow Webhook Security → Allow Custom Request Body
One webhook endpoint can power any Flow automation.

Features

Feature	Description
Webhook triggers for Flow	Secure HTTP endpoints that start any Shopify Flow automation on demand
Variable mapping	Map payload fields to Flow variables, reference as `{{fieldOne}}`, `{{fieldTwo}}`, etc.
Authentication	Static Token (simple) or HMAC SHA256 (tamper-proof)
Invocation history	Full log of every request. (timestamp, payload, headers, and status)
CORS support	Enable for browser-based or frontend integrations
Custom request body	Accept flexible payload structures from third-party platforms
Webhook dashboard	Manage, monitor, and test all endpoints in one place

Authentication

Method	How it works	Best for
None	No authentication	Testing only, not production
Static Token ✓	Fixed token in `X-Api-Key`header	Most integrations (n8n, Make, Zapier)
HMAC SHA256	Signature from payload + secret key	High-security or compliance

Variable mapping

Flow Webhooks lets you map fields in your incoming JSON payload to named variables
that Shopify Flow can use. Define up to 4 field names in the Advanced Settings tab. You can also send some additional data if you mark the checkbox in the Flow Webhook Security → Allow Custom Request Body

Field in app	Your payload key	Reference in Flow
Field 1	`name`	`{{fieldOne}}`
Field 2	`email`	`{{fieldTwo}}`
Field 3	`question`	`{{fieldThree}}`
Field 4	`other`	`{{fieldFour}}`

Common use cases

Tag or update a Shopify customer when a form is submitted externally
Trigger order or fulfillment actions from an n8n or Make workflow
Sync contact data from a CRM or helpdesk into Shopify when a record changes
Start a Shopify Flow when a Zapier automation completes
Fire automations from a frontend form (with CORS enabled)
Replace multiple single-purpose integrations with one unified webhook manager

What merchants say

"This app makes Shopify Flow 5x more useful. The developer is super easy to reach
and extremely helpful." — SuperFast Startup, Portugal

"The missing piece for Shopify Flow — you only need one Flow to work with all
your webhooks." — Senkels, Austria

"Exactly what I was trying to solve via a bunch of third-party apps. Highly
recommend." — Aloha Tinyboards, United States

Install in your Shopify store from Shopify app store

Support

You can reach out to [email protected] or join our Apps Slack Workspace here