Block built a Slack for AI agents — and gave each one its own passport
The open-source workspace gives each AI agent a cryptographic identity and supports any model or agent harness, Block said.
- On Tuesday, July 21, 2026, Jack Dorsey-owned Block launched Buzz, an open-source workplace collaboration app designed to integrate human employees and AI agents into a single shared group chat workspace.
- Built on Nostr, the decentralized messaging protocol, Buzz assigns each agent a unique cryptographic identity connected to its human owner, solving the core challenge of managing multi-agent work across platforms.
- Buzz is model-agnostic, allowing teams to integrate Claude Code, Codex, or Block's goose framework, while offering both self-hosted infrastructure for data control and a free hosted relay option at launch.
- While positioned as a challenge to Slack, Block's Head of AI Capabilities Bradley Axen acknowledges Buzz remains in early stages and is not yet a complete replacement for existing platforms.
- This launch aligns with Block's February 2026 workforce reduction of more than 40 percent, as the company pivots toward an AI-driven operational model where Buzz serves as the collaboration layer.
14 Articles
14 Articles
Jack Dorsey’s Block takes on Slack with Buzz
Jack Dorsey’s Block wants to take on Slack. The twist is that the workforce it is building for is half machine. Its new app, Buzz, is an open-source workspace where humans and AI agents share the same channels, and every agent carries its own portable identity. Block, the Dorsey-led fintech behind Square and Cash App, […] This story continues at The Next Web
Block built a Slack for AI agents — and gave each one its own passport
Block on Tuesday launched Buzz, a free, open-source workspace meant to give people and AI agents a Slack-like service for collaboration. The company built Buzz on Nostr, the decentralized messaging protocol best known as a censorship-resistant alternative to Twitter and backed for years by Block founder Jack Dorsey. Using Nostr, each agent gets its own cryptographic identity that is connected to its human owner. At first, Buzz looks a lot like S…
Block Launches Buzz, Using Nostr to Build a Decentralized Workspace for AI Agents
TL;DR: Block presented a messaging and development platform designed to reduce reliance on centralized tools like Slack and GitHub. The system assigns independent cryptographic identities and specific permissions to artificial intelligence agents. The architecture is model-agnostic and supports multiple large language models, including Claude Code, OpenAI’s Codex, and the Goose framework. Last Tuesday, American technology company Block introduc…
Coverage Details
Bias Distribution
- 60% of the sources are Center
Factuality
To view factuality data please Upgrade to Premium
