This page stands in for docs.400.dev/changelog/security.
Public updates are written in plain language for the people using 400faces.
Text AI saves verify the result before storing it
0.25.1 · 2026-06-13 · patch
Saving an AI-refined prompt now checks that the saved result matches the result the app produced, including its usage receipt, before it is added to saved Text history.
Apps: Text
Categories: security, fixed
- Prompt-refinement saves are tied to the generated result When you save an AI-refined prompt, the Text app now verifies the saved content, model, cost estimate, and usage receipt match the generated result. This keeps saved Text history accountable and prevents mismatched result details from being stored.
Tools, accounts, and QR codes
0.2.0 · 2026-05-24 · minor
400.dev grew from a single tool into a small suite — a Color tool with 31,900 named colors, QR codes for your links, personal accounts with display handles, your Saved Artifacts in one place, a tools home, a public status page, and safer link sharing.
Apps: Account, Image, Links, Platform
Categories: added, improved, security
- Color tool — 31,900 named colors Look up any color by name or hex. Each color gets a full page: every code (HEX, RGB, HSL, OKLCH, CMYK, LAB), contrast checks, harmonies, tints and shades, color-blindness previews, its color family, and the nearest named colors. Save colors to your account.
- Your Saved Artifacts, on your account Everything you've made across tools — links, QR codes, and saved colors — now lives on your account page, grouped by app, newest first, with search.
- QR codes for any link Generate a QR code for any saved link, customize its colors, and download it as an image. Scans are counted separately from clicks.
- Your account and display handle Every signed-in person now has an account page to set a unique lowercase display handle and an avatar, with instant availability checks and suggested alternatives when a name is taken.
- Find your tools fast The tools home now shows your favorites and recently used tools, plus a unified search across everything available to you.
- Create your own external links Members with a verified email can now shorten external destinations, not just internal ones, with sensible monthly limits.
- Public status page A live status page at status.400.dev shows current uptime and any active incidents.
- Stronger link safety New external destinations are screened against known threats, re-checked over time, and can be reported and taken down quickly.
Link foundation
0.1.0 · 2026-05-09 · minor
The first 400.dev tool is now in place with saved links, shared link data, and safe internal redirects.
Apps: Links
Categories: added, improved, security
- Create saved links Signed-in users can create and revisit 400.dev links from the Link tool.
- Links are shared platform data Other 400.dev tools can create and reuse links through the platform link service.
- External links are gated New external destinations stay blocked until safety checks are proven.