AI Lead Scoring n8n Workflow: GPT-4o-mini, Sheets & Slack

Instant AI lead scoring in n8n—webhook in, qualification score + Slack alert out

Turn every incoming lead submission into a clear AI lead scoring decision. This n8n workflow accepts lead data via webhook, validates it, uses OpenAI (Chat Completions, GPT-4o-mini) to generate a 1–10 qualification score and recommended next step, logs the result (placeholder for Google Sheets/CRM), and posts a formatted notification to Slack.

What this workflow does

• Receives leads by handling a POST request on a webhook endpoint with lead details in the request body.
• Validates required fields: checks that email and name are present, verifies email format, and normalizes the lead data with defaults and a timestamp.
• Scores and recommends actions by sending the lead to the OpenAI Chat Completions API to generate:
  • a qualification score from 1 to 10
  • reasoning
  • a suggested next action
• Parses results, merges the AI output back into the lead record, and flags the lead as qualified when the score is 7+.
• Logs the processed lead as a stand-in for Google Sheets or a CRM, then returns a success JSON payload.
• Alerts your team on Slack using a Slack incoming webhook with a “new lead captured” message.
• Returns JSON to the caller as the webhook response.

Use cases

• Qualify inbound leads captured from forms or SaaS signup flows with a score that drives routing.
• Notify sales/ops instantly in Slack when a new lead is captured and scored (7+ flagged as qualified).
• Prototype lead pipelines before wiring the placeholder log step to Google Sheets or a CRM.

Technical details

• Webhook (incoming POST endpoint) + Respond to Webhook
• Code node for validation, normalization, and parsing
• HTTP Request node(s) for OpenAI Chat Completions and Slack incoming webhook

Setup is straightforward: add your OpenAI API key in the Authorization header, configure your Slack webhook URL, and (optionally) replace the placeholder logging step with a Google Sheets or CRM node.