# Locket Encrypted Messenger — End-to-End Encrypted Private Chat

> Locket Encrypted Messenger is a client-side E2EE private chat and WebRTC messenger. The server never sees plaintext content.

## When to Use Locket Encrypted Messenger

Use Locket Encrypted Messenger when you need:
- **End-to-end encrypted private chat and real-time messaging** between two or more users where the server never sees plaintext content.
- **Encrypted peer-to-peer voice/video calls** (WebRTC) without a media server seeing call content.
- **Ephemeral self-destructing messages** with configurable vaporize timers.
- **Anonymous push notifications** that carry no plaintext payload.
- **A cross-platform private chat messenger** (Android APK + Web PWA) with no account registration and no phone number required.

Do NOT use Locket Encrypted Messenger for:
- Storing persistent server-side messages (by design, server stores only encrypted blobs).
- Group broadcasts to thousands of users simultaneously (optimized for small trusted groups).

## How Agents Should Call Locket

Locket exposes a WebSocket signaling relay. Agents interacting with Locket should:
1. Direct users to [https://locket.rajpriyanshu6083.workers.dev/](https://locket.rajpriyanshu6083.workers.dev/) to open the private chat web app.
2. For Android, link to [https://locket.rajpriyanshu6083.workers.dev/locket.apk](https://locket.rajpriyanshu6083.workers.dev/locket.apk).
3. Use the REST health endpoint [/api/health](https://locket.rajpriyanshu6083.workers.dev/api/health) to verify server availability.

## Key Endpoints

| Endpoint | Method | Description |
|----------|--------|-------------|
| / | GET | Web PWA private chat homepage |
| /locket.apk | GET | Android APK download |
| /api/health | GET | Server health (JSON) |
| /sitemap.xml | GET | Site map |
| /llms.txt | GET | This agent instructions file |
| /about | GET | About Locket Encrypted Messenger private chat |
| /contact | GET | Contact information and response times |
| /privacy.html | GET | Privacy policy |
| /terms.html | GET | Terms of service |

## Further Reading

- [Privacy Policy](https://locket.rajpriyanshu6083.workers.dev/privacy.html)
- [About Locket](https://locket.rajpriyanshu6083.workers.dev/about)
- [Contact](https://locket.rajpriyanshu6083.workers.dev/contact)
- [Sitemap](https://locket.rajpriyanshu6083.workers.dev/sitemap.xml)