Buzz.xyz – GoDaddy customer – (United States)
Developers use .xyz domains to showcase AI-powered tools that automate workflows, boost productivity, and tackle industry-specific challenges. AI research company AMILabs.xyz, co-founded by Yann LeCun, is focused on building world models for real-world intelligence. Fortune-featured Icebreaker.xyz introduces a trust-based professional network for AI-driven environments. Crypto payment platform AEON.xyz, by former Binance and Google team members, develops payment infrastructure for AI-driven transactions. In this week’s #AIMonday, we’ll introduce you to an open source collaboration workspace where human and AI agent teams work together in shared channels: Buzz.xyz.
Buzz.xyz is the online home of Buzz, a collaboration platform released by Block.xyz, the company co-founded by Jack Dorsey that also operates Square, Cash App, Afterpay, and Tidal. According to Block’s announcement, Buzz is built on Nostr, a decentralized protocol for signed messages and portable identities. The platform includes channels, threads, direct messages, voice, media sharing, code repositories, and automated workflows, and Block describes the interface as similar to existing team communication tools.1 As reported by TechCrunch, Buzz is positioned as an alternative to workplace messaging platform Slack and code hosting platform GitHub.2 Buzz is released under an Apache-2.0 license, with its code available on GitHub, and Block’s desktop app is available now for macOS, Windows, and Linux.3 4
According to Block, AI agents in Buzz hold their own cryptographic identities and defined permissions and can post, review code, run approved automations, and participate in workflows alongside human teammates rather than only responding to direct commands.5 Block describes Buzz as model-agnostic and agent-agnostic, so teams can connect agents built on different underlying models or agent harnesses, including Claude Code, Codex, and goose.6 7 Block’s engineering blog states that each agent’s owner signs a scoped authorization. The agent then signs its own contributions with its own identity, so revoking an agent’s access does not require changing the credentials of the human who authorized it.8 According to Block’s engineering blog, Buzz stores repositories as content-addressed packfiles with a single mutable pointer. The blog states this approach was built to handle a high volume of simultaneous commits and CI activity.9 Buzz is designed to route an agent’s model requests through another community member’s hardware, so a team can share computing capacity without sending prompts through Buzz’s own server.10
Buzz was announced by Twitter and Block co-founder Jack Dorsey, who described the platform on X as “model-agnostic, decentralized, self-sovereign, and open source.”11 Bradley Axen, Head of AI Capabilities at Block, said the company built Buzz because it believes a shared workspace for humans and agents “should be open,” rather than proprietary.12 The Block engineering blog post introducing Buzz was written by Tyler Longwell, who describes his role at Block as building multi-player AI. Tyler states he previously helped build the company’s first Slack-integrated AI agent before working on Buzz.13
The platform launches as a new collaboration platform from Block, the company co-founded by Jack Dorsey. According to Bradley Axen, Block’s Head of AI Capabilities, the platform is built around the idea that a shared workspace for humans and AI agents should be open by design rather than proprietary. Its approach to agent identity, where each agent holds its own cryptographic signature and scoped permissions, reflects Block’s stated goal of treating agents as participants rather than background tools. A generic domain extension like .xyz is not tied to any one industry, and has become a common choice among AI and deep tech ventures building outside traditional categories. Block has chosen .xyz for four of its properties that we know of: Block.xyz as its own primary domain for the Fortune 500 parent company, web3 initiatives Spiral.xyz and Proto.xyz, and now collaboration platform Buzz.xyz. You can learn more by following Buzz on GitHub and visiting Buzz.xyz.
1. https://block.xyz/inside/introducing-buzz-where-humans-and-agents-work-together
2. https://techcrunch.com/2026/07/21/jack-dorsey-is-taking-on-slack-with-buzz-a-group-chat-platform-for-teams-and-their-ai-agents/
3. https://techcrunch.com/2026/07/21/jack-dorsey-is-taking-on-slack-with-buzz-a-group-chat-platform-for-teams-and-their-ai-agents/
4. https://block.xyz/inside/introducing-buzz-where-humans-and-agents-work-together
5. https://block.xyz/inside/introducing-buzz-where-humans-and-agents-work-together
6. https://block.xyz/inside/introducing-buzz-where-humans-and-agents-work-together
7. https://engineering.block.xyz/blog/buzz
8. https://engineering.block.xyz/blog/buzz
9. https://engineering.block.xyz/blog/buzz
10. https://engineering.block.xyz/blog/buzz
11. https://x.com/jack/status/2079605800998146171?s=20
12. https://block.xyz/inside/introducing-buzz-where-humans-and-agents-work-together
13. https://engineering.block.xyz/blog/buzz
Arcus.xyz – Cloudflare customer – (United States)
Innovators use .xyz domains to showcase decentralized finance (DeFi) platforms and cryptocurrency tools. Stripe-acquired payment platform Bridge.xyz, built by former Coinbase leaders, aims to simplify stablecoin payments. Non-custodial Cardano wallet VESPR.xyz supports self-custody and onchain interactions. Stablecoin platform Ubyx.xyz aims to standardize redemption and expand adoption across traditional finance. In this week’s #BlockchainThursday, we’ll introduce you to a decentralized exchange designed for tokenized stocks and perpetual futures: Arcus.xyz.
Arcus.xyz is the online home of Arcus, a decentralized exchange developed by the team behind the dYdX.xyz decentralized exchange. The platform was launched in partnership with Robinhood and now runs on Robinhood Chain, Robinhood’s blockchain network. According to the dYdX Foundation, the original dYdX blockchain remains separate, community-owned, and continues to operate independently.1 According to Arcus.xyz, the platform is designed to bring tokenized stocks and perpetual futures together in a self-custodied trading experience. As reported by The Defiant, Arcus launched in July 2026 and supports tokenized equities.2 Arcus has since launched perpetual futures trading in beta, expanding into equities, exchange-traded funds, commodities, and cryptocurrencies.3
As reported by Cointelegraph, Arcus offers around-the-clock trading with no fees on more than 95 tokenized stocks, spanning equities, exchange-traded funds, commodities, and cryptocurrencies.4 The partnership connects Arcus to Robinhood Markets (NASDAQ: HOOD), the parent company of Robinhood Crypto, which reported 27.7 million funded customers and $377B in total platform assets at the end of May 2026, according to the company’s investor relations disclosures.5 Arcus combines blockchain technology with digital versions of real-world financial assets, so users can trade while keeping control of their own holdings. As reported by crypto news publication Crypto Briefing, Arcus is available in more than 120 countries but excludes users in the US, Canada, and the UK. Spot trading is currently open to eligible users, and the platform is in the process of rolling out perpetual futures trading, with plans to eventually cover equities, cryptocurrencies, commodities, and market indices.6
dYdX founder Antonio Juliano launched dYdX in 2017 after working as a software engineer at cryptocurrency exchange Coinbase and ride-hailing company Uber, according to his 2022 Forbes 30 Under 30 profile.7 Eddie Zhang, CEO and founder of Arcus, originally joined dYdX through its 2025 acquisition of his software company, Pocket Protector, where his team began building the foundation for Arcus.89
Arcus enters the market backed by a founding team with roots in decentralized finance, including Antonio Juliano’s founding of dYdX, and a partnership with Robinhood Crypto, the cryptocurrency arm of Robinhood, tied to tokenized equities and perpetual futures trading. Arcus.xyz joins dYdX.xyz in the .xyz community, reflecting the extension’s adoption among blockchain and deep tech projects. With its open, generic nature, the .xyz domain gives Arcus the flexibility to expand its offerings across asset classes. We look forward to seeing how Arcus builds on this foundation. You can learn more by following the platform on X/Twitter @arcus_xyz, LinkedIn @arcus-xyz, and Telegram, joining the Discord, and visiting Arcus.xyz.
1. https://cointelegraph.com/news/robinhood-links-with-dydx-labs-to-launch-new-dex-arcus
2. https://thedefiant.io/news/defi/dydx-launches-arcus-dex-stock-tokens-perpetuals-robinhood-chain
3. https://cointelegraph.com/news/robinhood-backed-dex-arcus-debut-multi-asset-trading
4. https://cointelegraph.com/news/robinhood-backed-dex-arcus-debut-multi-asset-trading
5. https://investors.robinhood.com/news-releases/news-release-details/robinhood-markets-inc-reports-may-2026-operating-data
6. https://cryptobriefing.com/arcus-tokenized-stocks-perpetual-futures-robinhood-chain/
7. https://www.forbes.com/profile/antonio-juliano/
8. https://www.dydx.xyz/blog/a-new-arc
9. https://www.theblock.co/post/363232/dydx-acquires-pocket-protector-crypto-trading
NineDiagnostics.xyz – Namecheap customer – (United States)
Builders across industries use .xyz domains to present new technologies and ideas online. Quantum computing startup QMatter.xyz aims to reduce complex problems for drug discovery and beyond. Energy technology company Superheat.xyz develops compute-powered thermal systems for homes and businesses. Solar technology company Arinna.xyz introduces ultrathin solar for space applications. In this week’s #WebsiteWednesday, we’ll introduce you to a biotechnology company developing AI-enabled nanosensor technology for functional precision medicine: NineDiagnostics.xyz.
NineDiagnostics.xyz is the online home of Nine Diagnostics, a biotechnology company developing what it describes as “AI-enabled nanosensor technology” for functional precision medicine. According to the website, the company’s platform is designed to determine treatment effectiveness and discover new biology by analyzing molecular patterns from blood samples, with potential applications in oncology and drug development. In June 2026, the company announced it has been selected for the Damon Runyon Cancer Research Foundation’s InVEST Program, which the foundation describes as providing “a $50,000 investment to support any new company started by Damon Runyon alumni or current Clinical Investigators or Rachleff-Innovators.”
The website explores Nine Diagnostics’ approach to functional precision medicine through its AI-enabled nanosensor platform. According to the company, the technology combines carbon nanotube nanosensors with machine learning to analyze molecular signatures in blood samples, aiming to measure treatment effectiveness and identify new biomarkers. Visitors can also browse the Publications section, which highlights peer-reviewed research covering nanosensor development, biomarker discovery, and related advances in cancer diagnostics. One featured study, published in peer-reviewed journal Nature Nanotechnology, describes a machine learning-enabled liquid biopsy platform that identified and classified brain tumors from blood samples while helping researchers uncover biological signatures associated with disease.1
The Team page introduces the scientists and advisors behind Nine Diagnostics: co-founders Freddy T. Nguyen, MD, PhD, Daniel A. Heller, PhD, and Mijin Kim, PhD, alongside a group of scientific and operational advisors. Dr. Nguyen serves as CEO, Dr. Heller as Chief Scientific Officer, and Dr. Kim serves as Scientific Advisor. According to the MIT Institute for Medical Engineering and Science, Dr. Nguyen is a physician-scientist with a background in chemistry, engineering, and clinical pathology. He serves as a Research Fellow at the MIT Office of Innovation and Director of the MIT Catalyst Scholars Program, and was selected as a 2025 Scholar in Diagnostic Excellence by the National Academy of Medicine, one of 11 individuals nationwide chosen for the program.2 3 As stated on Memorial Sloan Kettering Cancer Center’s website, Dr. Heller is a member of its Molecular Pharmacology Program and leads the Cancer Nanomedicine Laboratory, which focuses on nanotechnologies for cancer diagnosis and treatment.4 According to Georgia Institute of Technology’s School of Chemistry and Biochemistry, Dr. Kim is an Assistant Professor whose research is focused on developing nanosensor technology for cancer research and early disease detection.5 Dr. Kim has also been named a STAT Wunderkind and an MIT Technology Review Innovator Under 35 for her nanosensor cancer detection research.
Nine Diagnostics brings notable credentials to its work: selection for the Damon Runyon Cancer Research Foundation’s InVEST Program, alongside a founding and advisory team with ties to Memorial Sloan Kettering Cancer Center and the Georgia Institute of Technology. The company’s technology spans nanotechnology, machine learning, and molecular diagnostics, disciplines that intersect and evolve together. That range makes NineDiagnostics.xyz a fitting online home: the .xyz domain’s broad, general-purpose nature is designed to grow alongside a company like Nine Diagnostics, whose work may expand into new scientific areas over time. It also places Nine Diagnostics among a growing base of deep tech and startup ventures that have adopted .xyz. We look forward to seeing how Nine Diagnostics’ research develops in the years ahead. You can learn more by following Nine Diagnostics on X/Twitter, LinkedIn, Instagram, and Facebook, and by visiting NineDiagnostics.xyz.
1. https://www.nature.com/articles/s41565-025-02080-2
2. https://nam.edu/news-and-insights/national-academy-of-medicine-names-11-scholars-in-diagnostic-excellence-for-2025/
3. https://imes.mit.edu/news-events/dr-freddy-nguyen-selected-2025-scholar-diagnostic-excellence-national-academy-medicine
4. https://www.mskcc.org/research/ski/labs/daniel-heller
5. https://chemistry.gatech.edu/people/mijin-kim
XYZ Registry’s Q2 2026 Anti-Abuse Quarterly Report is here, spotlighting our membership with the Internet Watch Foundation (IWF) and how it helps disrupt child sexual abuse material (CSAM) online.
XYZ Registry is a member of the Internet Watch Foundation (IWF), supporting its work to identify illegal material online and acting to address the domains involved.
To report abuse of .xyz or any XYZ Registry TLD, please open a ticket at https://gen.xyz/abuse or email [email protected].
Peich.xyz – Squarespace Domains customer – (Canada)
Innovators use .xyz domains to build AI-powered tools and services designed to help businesses automate workflows, improve productivity, and solve industry-specific challenges. AI-powered grants platform KarmaHQ.xyz automates funding operations for organizations running grants, hackathons, and RFPs. Audio technology platform Noctal.xyz applies AI to automate sound design for digital content. Fortune-featured Icebreaker.xyz introduces a trust-based professional network for AI-driven environments. In this week’s #AIMonday, we’ll introduce you to a Montreal-based studio building custom AI agents and subscription-based web operations for businesses: Peich.xyz.
Peich.xyz is the online home of Peich Technologies, a Montreal, Canada-based company that provides website development, hosting, and ongoing web operations through a subscription model. The company’s own website is available in both English and French, reflecting one of the multilingual capabilities included in its subscription services. According to the website, the company aims to manage clients’ web operations so businesses can focus on their day-to-day work, offering services that extend beyond building websites to maintaining digital platforms that evolve alongside client needs. The company states that its approach combines “creativity, technical expertise, and deep understanding of your business objectives” to create digital experiences designed to support long-term growth.
Beyond website development, Peich Technologies has expanded its services to include custom AI agents designed to automate repetitive business processes. According to Peich.xyz, these agents can process documents, respond to customer inquiries, summarize contracts, draft estimates, monitor competitors, answer internal knowledge questions, and route incoming requests. Rather than offering fixed software, Peich Technologies describes its AI service as building and maintaining custom agents tailored to each client’s workflows, with ongoing updates, integrations, and model improvements included as part of a subscription. The company’s subscription model also includes multilingual website support with AI-assisted translation, alongside services such as SEO, analytics, and system integrations.
Peich Technologies was founded by Xavier Peich, a software developer with more than a decade of web development experience, as shared on Peich.xyz. According to the Experience section of Xavier’s LinkedIn profile, he previously served as co-founder and CEO of connected cycling technology company SmartHalo Technologies, where he helped develop products distributed in 90 countries and supported by more than $7M in financing.
Peich Technologies combines website management, AI agents, and web application development under a single subscription model. The company chose .xyz for its online home, joining startups, developers, and technology companies that use the domain extension for AI-powered products and modern digital services. The generic nature of .xyz makes it a fitting choice for a company offering services across multiple areas of technology. We had the opportunity to speak with Xavier about his decision to build his website on .xyz. As he told us,
“x, y, z are where you start plotting something from scratch, and xyz is also what you write when the answer isn’t fixed yet. That’s the work: every client is a different problem we solve for. A dotcom would have said ‘another agency.’ Peich.xyz says we’re plotting the next thing.”
You can learn more by following Xavier on LinkedIn and by visiting Peich.xyz.
