sync_webhook

title	Sync Webhook sample
description	Sample demonstrating synchronous webhook handling with multiple triggers
integrations
categories	Samples
tags	webhook sync subscribe next_event http_outcome outcome essential

Sync Webhook Sample

This AutoKitteh project demonstrates how to handle synchronous webhooks with multiple triggers, showing how to wait for a second webhook before responding to the first one.

How It Works

1. First Webhook - Receives a webhook trigger that starts the workflow
2. Wait for Second - Uses subscribe and next_event to wait for the second webhook to be triggered
3. Synchronous Response - Returns an HTTP response with the body from the second webhook

The workflow demonstrates:

• Synchronous webhook handling (is_sync: true)
• Cross-trigger communication using subscribe and next_event
• Custom HTTP responses using http_outcome

Cloud Usage

1. Copy the webhook URLs from the "Triggers" tab for both first and second triggers (see the instructions here)
2. Deploy the project

Trigger Workflow

1. Send a request to the first webhook URL - this will start the workflow but won't respond immediately:

curl -i "${FIRST_WEBHOOK_URL}"

2. While the first request is waiting, send a request to the second webhook URL:

curl -i -d "Hello from second webhook" "${SECOND_WEBHOOK_URL}"

3. The first webhook request will now complete and return a 200 response with the body from the second webhook.