--- title: Block built a Slack for AI agents — and gave each one... description: Block has launched Buzz, a free open-source workspace built on the Nostr decentralized protocol that lets AI agents participate alongside humans in channels,... canonical: https://daily.dev/posts/block-built-a-slack-for-ai-agents-and-gave-each-one-its-own-passport-apzzfa4tx twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Block built a Slack for AI agents — and gave each one its own passport | daily.dev og:description: Block has launched Buzz, a free open-source workspace built on the Nostr decentralized protocol that lets AI agents participate alongside humans in channels,... og:url: https://daily.dev/posts/block-built-a-slack-for-ai-agents-and-gave-each-one-its-own-passport-apzzfa4tx og:image: https://api.daily.dev/og/posts/apZZFA4Tx.png og:image:alt: Block built a Slack for AI agents — and gave each one its own passport og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Block built a Slack for AI agents — and gave each one its own passport **[The New Stack](https://daily.dev/sources/newstack)** · 5 min read · 0 upvotes · 0 comments ## Summary Block has launched Buzz, a free open-source workspace built on the Nostr decentralized protocol that lets AI agents participate alongside humans in channels, threads, and direct messages. Each agent gets its own cryptographic keypair for identity, with a second signature tying it back to its human owner — creating a verifiable paper trail. Agents connect via the Agent Client Protocol (ACP) and can work with any model or agent harness including Claude Code, Codex, or Block's own goose framework. Teams can self-host their own Nostr relay for full infrastructure control, or use Block's free hosted relay. The launch follows Block's earlier agent projects including goose (50K+ GitHub stars) and BuilderBot, which handles 200K+ operations daily and accounts for ~15% of Block's production code changes. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [How Block manages its fleet of AI coding agents from Slack](https://daily.dev/posts/how-block-manages-its-fleet-of-ai-coding-agents-from-slack-pmztrh2b7) · The New Stack · 2 upvotes · 0 comments --- Tags: [#ai-agents](https://daily.dev/tags/ai-agents) [View this post on daily.dev](https://daily.dev/posts/block-built-a-slack-for-ai-agents-and-gave-each-one-its-own-passport-apzzfa4tx) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Block built a Slack for AI agents — and gave each one its own passport","url":"https://daily.dev/posts/block-built-a-slack-for-ai-agents-and-gave-each-one-its-own-passport-apzzfa4tx","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/block-built-a-slack-for-ai-agents-and-gave-each-one-its-own-passport-apzzfa4tx"},"datePublished":"2026-07-21T16:11:01.203Z","dateModified":"2026-07-23T11:49:08.934Z","description":"Block has launched Buzz, a free open-source workspace built on the Nostr decentralized protocol that lets AI agents participate alongside humans in channels,...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d31f09ce8119a6c18a94c392dc9104b1?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d31f09ce8119a6c18a94c392dc9104b1?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"The New Stack","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"The New Stack","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/newstack","url":"https://daily.dev/sources/newstack"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/block-built-a-slack-for-ai-agents-and-gave-each-one-its-own-passport-apzzfa4tx","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"ai-agents","timeRequired":"PT5M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"The New Stack","item":"https://daily.dev/sources/newstack"},{"@type":"ListItem","position":3,"name":"Block built a Slack for AI agents — and gave each one its own passport"}]} ```