Sieve Gives Every Browser Tab a Job

Why it surfaced

Instead of maintaining a blocklist, you give Sieve a sentence such as “Fixing the payment bug,” and its local AI evaluates each tab against that goal. The site promises zero bytes sent to a server, no account, open-source code, and an override when its judgment is wrong.

Sieve is an on-device Chrome extension that judges pages against a goal you describe and soft-blocks the ones that do not serve it.