API Locker

Store, organize & auto-suggest API keys in Chrome. AES-256 encrypted. Smart site detection. Your keys never leave your device.

API Locker — Secure API Key Manager for Developers Stop hunting for API keys across browser tabs, .env files, and sticky notes. API Locker stores all your API keys in one secure, encrypted vault — right in your browser. 🔐 AES-256-GCM ENCRYPTION Every key is encrypted with military-grade AES-256-GCM using your master password. Your password never leaves your device. We can't see your keys — even if we wanted to. ⚡ SMART SITE DETECTION Open OpenAI? API Locker suggests your OpenAI key automatically. Works with 50+ providers: Anthropic, GitHub, Stripe, AWS, Supabase, Resend, and more. 🗝️ ONE-CLICK COPY Click any key to copy instantly. No typing, no hunting, no mistakes. ☁ SYNC ACROSS DEVICES (Pro) Encrypted cloud sync via Supabase. Only AES-256 encrypted blobs are sent — the server never sees your plaintext keys. ⏰ EXPIRY ALERTS (Pro) Set expiry dates on keys and get warned before they expire. --- FREE PLAN — No account required ✓ Up to 3 API keys ✓ AES-256-GCM local encryption ✓ Smart site detection (50+ providers) ✓ One-click copy ✓ Export & import backup ✓ Email backup PRO PLAN ✓ Unlimited API keys ✓ Cloud sync across devices ✓ Expiry date alerts ✓ Priority support --- 🔒 PRIVACY FIRST - 100% local by default - Zero telemetry on free plan - No account required - Open architecture — no hidden network calls - Master password never transmitted Perfect for: developers, freelancers, DevOps engineers, AI builders, and anyone who works with APIs daily. Supports 32+ API providers including major cloud services, AI platforms, payment processors, and developer tools.