Kosu

Paste a URL and Kosu fetches the title, thumbnail, and content type. The item enters your queue – a single, ordered list of things worth your attention.

Drag to reorder. Open items to engage. Mark as read when done. Everything stays in one place, prioritized by you.

Items fade over time. If you don't engage – open, reorder, or change state – an item gradually loses prominence. After about two weeks it warns you, and after four weeks it quietly archives itself.

Opening an item extends its life by one day (at most once per 24 hours). The queue stays fresh without manual cleanup.

Every item moves through a simple lifecycle:

• queue – Active, in your queue
• suggested – Proposed by an agent, awaiting your review (Pro)
• read – Marked as consumed
• archived – Removed from queue (recoverable)
• deleted – Soft-deleted (recoverable for 30 days)

Items can move between states freely. Archived and deleted items can always be restored to the queue.

AI agents can propose content for your queue via the API. Suggestions appear in a separate tab – accept what's useful, dismiss the rest.

This keeps agents useful without letting them flood your queue. Suggestions is a Pro feature.

Kosu canonicalizes URLs – stripping tracking parameters, normalizing casing. The same canonical URL cannot exist twice as an active item.

When you add a URL that already exists:

• Active in queue – Returns the existing item, unchanged
• Archived, read, or deleted – Reactivates it at the bottom of the queue
• Not found – Creates a new item at the bottom