Handle ManyChat WhatsApp leads with OpenAI, Brevo CRM, and Slack alerts
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This workflow has 9 nodes and runs when an HTTP POST request hits its webhook URL. It uses only n8n's built-in nodes. It also calls api.openai.com, api.brevo.com and api.manychat.com over HTTP.
How it runs
Trigger: When an HTTP POST request hits its webhook URL.
- Instant 200 OK Handshake (<150ms) (Respond to Webhook): sends the response back to the webhook caller
- Parse & Qualify Subscriber (Code): runs custom JavaScript code
- AI WhatsApp Copy Generator (HTTP Request): calls api.openai.com (POST)
- Brevo CRM Async Upsert (HTTP Request): calls api.brevo.com (POST)
- Format WhatsApp Message (Code): runs custom JavaScript code
- ManyChat WhatsApp Callback API (HTTP Request): calls api.manychat.com (POST)
- Is Hot WhatsApp Lead? (If): checks a condition and branches into true / false
- Slack SDR WhatsApp Alert (HTTP Request): calls an HTTP API (POST)
HTTP calls to: api.openai.com, api.brevo.com, api.manychat.com
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (5)
- Webhook
n8n-nodes-base.webhook - Respond to Webhook
n8n-nodes-base.respondToWebhook - Code
n8n-nodes-base.code - HTTP Request
n8n-nodes-base.httpRequest - If
n8n-nodes-base.if
From the author
Quick overview This workflow receives a ManyChat webhook, instantly returns a 200 OK to avoid ManyChat’s 10-second timeout, then asynchronously generates a WhatsApp reply with OpenAI, syncs the lead to Brevo CRM, and optionally notifies an SDR team in Slack…