🔐 APISecure

Zero-server API key sharing for AI agents

🎯 The Problem

Sharing API keys is broken:

• ❌ Email/Slack = plaintext exposure
• ❌ 1Password sharing = overkill for single keys
• ❌ Self-hosted solutions = maintenance nightmare

✅ The Solution

APISecure — Browser-only encryption. No servers. No storage. Just secure.

• 🔐 AES-256-GCM encryption — Military-grade, in your browser
• 🚫 Zero-server architecture — Keys never touch our servers
• 🌐 Share via URL — Encrypted payload in the link itself
• 📱 Works everywhere — Any device with a browser
• 🔓 Browser-based decryption — No Node.js or CLI tools required
• 📈 Optimized for large keys — Handles large API keys without overflow
• 🎨 Modern UI — Clean, responsive design with dark mode

🚀 How It Works

Encrypting a Key

1. Visit apisecure.app/encrypt.html
2. Paste your API key → Browser encrypts it locally
3. Set a passphrase → AES-256-GCM protection
4. Share the URL → Encrypted payload in the link itself
5. Key self-destructs → Optional expiration

Decrypting a Key

1. Visit apisecure.app/decrypt.html or use the link you received
2. Enter the passphrase → Decrypt locally in your browser
3. Copy the key → Use it in your application
4. No Node.js required → Works directly in any modern browser

Zero servers. Zero storage. Zero trust required.

📸 Screenshots

Hero Section

Encrypt API Key

Compare with Alternatives

Security Features

How It Works (3 Steps)

🛡️ Security Features

Feature	Implementation
Encryption	AES-256-GCM
Key Derivation	PBKDF2 (100k rounds)
Storage	None (browser-only)
Transport	HTTPS/TLS 1.3
Expiration	Configurable TTL
Format Version	V2 (optimized for large keys)

🌐 Browser Compatibility

APISecure works on all modern browsers with Web Crypto API support:

• ✅ Chrome/Edge 60+ (2017+)
• ✅ Firefox 57+ (2017+)
• ✅ Safari 11+ (2017+)
• ✅ Mobile browsers (iOS Safari, Chrome Android)

No plugins. No extensions. No Node.js required.

🚀 Quick Start

Web Interface

• 🔐 Encrypt — Encrypt an API key
• 🔓 Decrypt — Decrypt a received key
• 📚 Documentation — Full guide
• 📝 Blog — Security articles & tutorials

For AI Agents

Perfect for sharing API keys with:

• Claude Code / OpenClaw agents
• GitHub Copilot extensions
• Local AI tools
• CI/CD pipelines

Example: Share an OpenAI key with an AI agent without exposing it in plaintext.

💡 Use Cases

• Share OpenAI keys with teammates securely
• Send AWS credentials without Slack exposure
• Distribute API tokens to contractors
• Rotate leaked keys with encrypted links

🔗 Links

• 🌐 Live Demo: apisecure.app
• 🐦 Twitter: @charlescsturt
• 📧 Contact: charles@skillshield.dev

📜 License

MIT License — Open source and free to use.

---

Because API keys deserve better than Slack. 🔐