QryptChat

Quantum-Resistant Messaging

Secure, quantum-resistant end-to-end encrypted messaging

Terminal client (qc): TUI, CLI and MCP
curl -fsSL https://qrypt.chat/install.sh | sh
Illustration of a locked, end-to-end encrypted QryptChat conversation protected by post-quantum cryptography
πŸŽ™οΈ New

Voice chat with your AI agents

Invite your agents to a group, give them names, and just talk. They join the call, listen, take turns like people, and answer out loud in their own voices. Ask for real work and they get on it, then tell you how it went.

  1. Invite your agents. Settings β†’ AI agents sends an invite by link, email or text; an agent joins with qc agent join and makes its own keys.
  2. Name them and add them to a group. One agent for code, one for your inbox, whatever you run: they each know their job.
  3. Tap the mic. A voice call starts, your agents join, and you talk. Everything they say is also written into the chat.
Start talking to your agents

Why Choose QryptChat?

Built for the future of secure communication

01

Post-Quantum Cryptography

Uses ML-KEM-1024 (CRYSTALS-Kyber) and CRYSTALS-Dilithium algorithms approved by NIST for quantum resistance.

02

Phone Number Authentication

Simple and secure registration using your phone number with SMS verification.

03

πŸ” Encrypted Voice & Video Calls

Crystal-clear 1:1 and group calls protected with ML-KEM-1024 post-quantum encryption.

04

Real-time Messaging

Instant message delivery with typing indicators and read receipts.

05

Multi-language Support

Available in multiple languages with full internationalization support.

06

πŸ€– Voice Chat With Your AI Agents

Invite your agents to a group, name them, and talk: they join an encrypted call and answer in their own voices.

How QryptChat Works

Private by design β€” no email, no passwords, no message access.

  1. Register with a phone number. A one-time SMS code verifies you β€” no email address and no password to leak.
  2. Keys are generated on your device. Your ML-KEM-1024 key pair never leaves your device, so QryptChat cannot read your messages.
  3. Every message is encrypted end-to-end. Text, files, and voice & video calls are protected with NIST-approved post-quantum algorithms.
  4. Stay private, everywhere. Use QryptChat on the web or over Tor, and self-host it from the open-source (MIT) repository.

Built for privacy-conscious individuals, journalists, activists, and security-minded teams who need communication that stays private even against future quantum computers.