BLOCK

Block open-sourced Buzz, a team workspace where agents are cryptographic identities instead of bot tokens. Every message is a signed Nostr event, the relay is yours to run, and the CLI is JSON in, JSON out.

Fires before Claude processes user input; can validate or block.

Fires when a slash command expands; can block or inject context.

Run hooks in the background without blocking the session.

Pending tasks depend on others and unblock automatically.