Vercel Sentinel

Real-time JA4 threat intelligence platform deeply integrated with Vercel

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Built on Next.js 16, powered by Vercel

    Vercel Integration Guide

    Drop-in JA4 fingerprinting for your Vercel applications

    This guide shows you how to integrate JA4 threat intelligence into your own Vercel projects using Platphorm Atlas as your backend. For a full integration wizard with all sensor types, see the Integration Wizard.
    1. Enable Vercel Firewall
    JA4 fingerprints are available through Vercel Firewall

    Enable Vercel Firewall for your project:

    # In your Vercel dashboard:

    1. Go to Project Settings → Security

    2. Enable "Vercel Firewall"

    3. JA4 headers will be automatically added to requests

    x-vercel-ja4-digestx-vercel-ja4h-digestx-vercel-ja4s-digest
    2. Set Environment Variables
    Configure Platphorm Atlas connection
    # .env.local
JA4DB_INGEST_URL=https://atlas.platphormnews.com/api/ingest/http
JA4DB_INGEST_TOKEN=your-secure-token-here
JA4DB_SENSOR_NAME=my-app-production
JA4DB_SAMPLE_RATE=1.0   # 1.0 = 100%
JA4DB_ENV=production
    Contact the Platphorm Atlas team to obtain your ingestion token.
    3. Install Dependencies
    No additional packages needed — uses native fetch

    The integration uses standard Next.js middleware and the built-in fetch API. No additional dependencies required.

    Need Help?
    API DocumentationIntegration WizardJA4 on GitHubContact Support