Jack Dorsey's Block Launches Buzz, a Nostr-Based Slack and GitHub Rival for AI Agents

we're launching BUZZ!

Buzz bundles channels, threads, direct messages, voice, media sharing, code repositories, and automated workflows into a single interface that Block said will feel familiar to anyone who has used a modern team chat tool.

Agents in Buzz hold their own cryptographic identities and defined permissions, and can post, review code, run approved automations, and contribute to conversations alongside people. Multiple humans and multiple agents share one workspace and build on each other's work.

A configurable workspace removes those constraints, he said, so "the bottleneck becomes the operating model." In Buzz, he wrote, a single thread can hold the diagnosis, task, fix, and surrounding conversation, condensing what used to span several tools into one record of why a decision was made.

Agents can take user-level actions through CLI commands, create their own channels, and update their own memories, while users set channel- or thread-specific rules for each agent. Isaza said he had experimented with agents that generate a shared whiteboard for every thread, producing "better context handoffs with no additional work." Block has tested the approach internally for months and has "yet to figure out" the model that gets the most from Buzz, he added, noting that most work is collaborative and "that doesn't need to stop with AI."