Deckrd: AI Detection

About

Deckrd — AI Detection for Your Conversations

Know who you're really talking to. Deckrd silently analyzes chat conversations to detect AI-generated messages, alerting you when your conversation partner may not be human.

HOW IT WORKS
• Automatic detection on Discord, WhatsApp, Messenger, LinkedIn, and X DMs
• 5 behavioral detectors analyze timing, language, coherence, style mimicry, and persona consistency
• Floating widget appears when AI probability crosses your threshold
• Browser notifications for high-confidence AI detection

PRIVACY FIRST
• All analysis happens locally in your browser
• Your messages never leave your device
• No message content is stored — only anonymous scores
• Optional server analysis sends only anonymous signal data, never message text (future release)

CUSTOMIZABLE
• Adjust detection thresholds with simple sliders
• Choose when the floating widget and notifications appear
• Works on any chat platform with smart heuristic fallback

Free to use. Pro tier coming soon with AI consensus deep analysis.

## What's new in v0.9.0003

- **Big accuracy pass.** Fixed a class of false-positive "AI detected"
  verdicts on conversations where Deckrd had thin signal. The score now
  blends toward "uncertain" when only a single detector is firing,
  instead of pegging to 100% confidence.
- **Smarter direction detection.** When Deckrd can't tell which side of
  a chat a message came from, it now skips the message rather than
  guessing. Stops the user's own writing being graded as if it were the
  counterparty's.
- **Cleaner behaviour on x.com profile feeds.** Deckrd no longer tries
  to score posts on a single author's profile or timeline, since those
  aren't conversations. Direct messages still work as before.
- **More-stable scoring at the boundary.** A floating-point edge case
  was silently dropping votes from detectors that returned values near
  the neutral threshold. Threshold comparison is now exact.

## Fixes

- Linguistic detector now requires at least three messages of inbound
  content before firing, matching the other content-heavy detectors.
- Mirror detector no longer falls through to a "perfect mirror" reading
  when an adapter returns empty messages.
- Confidence scaling no longer over-weights detectors that report low
  confidence, so weak signals don't dominate the verdict.

## Privacy

No new permissions. Detection still runs entirely on your device.
Message content never leaves your browser.