GoHighLevel Lead Validation & Routing via Webhook + Google Sheets

Validate, score, dedupe, and route leads—automatically—using an n8n webhook + Google Sheets + GoHighLevel

This n8n workflow receives leads via a POST webhook, runs deterministic validation and scoring rules, logs every decision to Google Sheets, and creates a GoHighLevel contact only when the lead passes—so your CRM stays clean and your follow-up stays fast.

What this workflow does

• Receives lead data: Accepts a JSON lead payload through a webhook (POST).
• Normalizes + validates: Uses rule-based checks to validate email/phone fields and detect common low-quality signals (including honeypot value, disposable email domains, placeholder text, and implausibly fast submissions).
• Generates a score and reason codes: Produces a score, reason codes, and a deterministic dedupe key for each lead.
• Flags duplicates in Google Sheets: Searches the Lead Audit Google Sheets tab for an existing row with the same dedupe key.
• Decides PASS / REVIEW / REJECT: Finalizes a decision based on validation results and duplicate status, then stamps the evaluation time.
• Audits every outcome: Appends the full evaluation result (decision, score, reason codes, and contact details) to the Google Sheets audit sheet.
• Creates contacts only when appropriate: Uses GoHighLevel OAuth2 to create a contact only for PASS decisions.
• Returns an HTTP JSON response: Sends back decision, score, reason codes, and the check timestamp.

Use cases

• Protect GoHighLevel from bot/spam submissions from landing pages or forms.
• Route inbound leads to human review when quality is uncertain (REVIEW).
• Maintain a complete audit trail of lead scoring decisions for compliance and troubleshooting.

Technical details

• n8n nodes: if, set, code, webhook, high level, plus sticky note.
• Integrations: Google Sheets (audit logging + dedupe checks) and GoHighLevel (contact creation).
• Setup includes: duplicating the provided audit sheet template, adding Google Sheets credentials, replacing the spreadsheet ID, and configuring GoHighLevel OAuth2.