Spam Filter for Next.js Contact Forms

Next.js server actions and API routes make handling form submissions easy, but they also make your forms an easy target for spam bots. FormShield adds an AI-powered spam check to your Next.js backend with a single API call — no CAPTCHA components, no client-side JavaScript bloat, and no extra dependencies.

Key Points

Server-side filtering in API routes

Call the FormShield API from your Next.js API route or server action before saving the submission. Spam never touches your database, your email inbox, or your CRM.

Works with Server Actions

Using React Server Components? FormShield works in server actions just as well as traditional API routes. Add one fetch call and you are protected.

No client bundle impact

Because the spam check happens server-side, there is zero impact on your client bundle size. No CAPTCHA scripts, no extra JavaScript, no layout shift.

Confidence scores for edge cases

Every verdict includes a confidence score. Route obvious spam to the trash, send borderline cases to a review queue, and let clean submissions through instantly.

Why FormShield?

AI-powered — analyzes content and intent, not just keywords or patterns.
Zero friction — no CAPTCHAs, no checkboxes, no puzzles. Invisible to your users.
Simple API — one endpoint, one API key. Works with any language or framework.

Ready to stop spam?

Protect Next.js form submissions with AI. No CAPTCHA, no user friction.

Get Started Free