AFS-UI builds interfaces over the addressable resources of AFS. People use a rendered interface; agents can inspect and operate its exposed structure through paths. AUP describes the interface and its interactions, while a UI device such as Web Device renders it.

TermFull entry →

Articles

AFS UI · Articles

AFS UI — ArcBlock builds decentralized identity, user-owned data, Blocklet infrastructure, and AI-native application systems.

What Endures When Everything Evolves?

OpinionOct 10, 2026

What Endures When Everything Evolves?

From Lode Runner on an Apple II to Unix, X Window and the early internet, Robert Mao traces the experiences behind AFS-UI and a shared interface system for people and agents.

EngineeringOct 10, 2026

Introducing AFS-UI: one interface for people and agents

AFS-UI lets people use a rendered interface while agents reach its corresponding structure through paths. An introduction to AFS, AUP, Web Device and the surrounding UI landscape.

OpinionOct 8, 2026

When the interface changes, the work should remain

AI can generate a fresh interface at any moment. How do people and agents keep working on the same thing? A journey from OpenAI Intelligent UI and UI protocols to X Window and a working AFS-UI experiment.

NewsSep 9, 2026

ArcBlock’s new website is live. ARC takes the stage.

ArcBlock’s new website runs on ARC, with all implementation code written by AI coding agents. Explore the new site and the technology behind it. The previous site remains available for about 30 days.

ExplainerAug 27, 2026

A globe you can put on the page

A rotating globe on a page is not decoration bolted under the text. It is a layout component: figure, scene, or backdrop. The homepage already uses it. This article puts several in the reading column.

ExplainerAug 27, 2026

Light on the page, not a picture of trees

Type on a white field is a document. Light moving over the type is a room. leaf-shadow is that overlay; gobo-loop is how you mint a new clip from a sentence.

ExplainerAug 21, 2026

AI can draft the homepage five ways. You pick on the real page.

A Web Device page can keep several finished renders on one URL. An agent drafts the set; a person picks on the real page; visitors only enter an A/B split if you open it.

ExplainerAug 14, 2026

Storytelling with Immersive Gallery

Pair a cover still with a short loop in the same folder-backed gallery so stage and story plates can paint fast, then breathe. One small way Web Device treats writing as something that can be performed.

ExplainerAug 14, 2026

Slides that read like an article

A Markdown deck can be published as an article of its own: a player on top, and below it every slide becomes a card with its narration beside it. No separate slide tool, no embedded frames. This article is itself the demo.

ExplainerAug 11, 2026

One Folder of Photos, Several Ways to Look

Folder-backed media gallery keeps a set of images next to the article and lets you choose grid, mosaic, stage, story, and more—without a second asset system.

ExplainerAug 9, 2026

Review Mode on Web Device: What You See Is What You Review

Open the page readers actually see, mark what is wrong, and leave an executable note next to the content. That is still Web Device in-page review. The overlay is quieter now: a glass island, a composer on the target, optional pointing and freeze.

ExplainerAug 7, 2026

Create Slide Decks That Live Inside Articles and Docs

Markdown Slides lets one Markdown record become an interactive deck inside an article or document while keeping the complete page readable.

EngineeringAug 3, 2026

The Web Content System on ARC: Not Understanding Your Content Is What Makes It Simple

WordPress and Astro both ask a site to declare its content model. That is not a flaw; it is a different trade-off. ARC's Web Device tries to make common web work a runtime, while leaving the meanings of products, terms, and events to object data and application components. This is about where that boundary belongs, and what still has to be supplied to make it hold.

OpinionAug 2, 2026

The web as a system capability

The modern web gained real application power, and in the process it tied publishing, interaction and runtime into a single thing. This series proposes a different cut: treat public publishing, identity and basic interaction as capabilities of the computing environment, and let applications grow on top of that.

EngineeringJul 31, 2026

Web Device: Declare a Website, Then Pick the Right Path

Web Device is one of ARC's core capabilities: declare a .web/ folder anywhere in AFS, and the data and AUP under it get rendered server-side into a website, SEO checks, broken-link detection, and visitor analytics included for free. This piece covers how it differs from UI Device (/dev/ui/web), how to use it, and which situations call for which.

NewsJul 21, 2026

ArcBlock CEO to Give a Keynote at Harness4GenUI, ASE 2026

ArcBlock founder and CEO Robert Mao will give a keynote at the 1st Harness4GenUI workshop, held during ASE 2026 in Munich, Germany.