The product sentence above stays: ARC is the Blocklet runtime. In the Realm Computing vocabulary, that same runtime is where a Realm acts. An Arc may operate as a Worker. This does not rename ARC, and it does not say that every Arc is already joined to DARC.
Definition
ARC
Agentic Realm Computer
ARC is the runtime for Blocklets. It gives a developer a place to run an application described as a Blocklet, instead of making the runtime, the application, and its resource connections one unexplained deployment.
Our term
- Also called
- Agentic Realm Computer
- Read more
- ARC →
Explore this topic
Articles
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OpenAI's Agents API is a harness. ARC is a new kind of computer for agents
OpenAI's Agents API turns the Codex loop into a hosted API: sessions, compaction, tools, sandboxes, plugins. That layer is real. It is still not a computer with identity, durable state, and an owner who can walk away with it. ARC attaches at the seam they already documented.
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After Software: Collaboration, Production, and How Value Gets Shared
Making software no longer requires making a company first. When productive capacity is scattered across people and AI, collaboration, ownership, and value need a new organization.
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Agents don't need a better sandbox. They need a computer of their own.
Many companies are building compute for agents: sandboxes, VMs, even digital workers. They answer where untrusted code should run. What agents still lack is a machine that can last: identity, state, constrained authority, verifiable history, and the right to leave. We call that machine ARC.
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From Blocklet Server to ARC: Why Owning Software Is Harder Than Generating It
AI can turn a request into software, but it does not automatically make that software, its data, or its identity belong to the user. ARC is the new architecture ArcBlock is building for that problem.
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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.
Products
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ARC
active
The runtime for Blocklets. It gives a developer a place to run an application described as a Blocklet, together with the resources that Blocklet declares it needs.
Terms
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AFS
AFS (Agentic File System) turns the files, services, and active work relevant to a task into an inspectable resource view. Instead of handing an agent an undifferentiated machine or a pile of APIs, it gives the task a world with names and boundaries.
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AUP
AUP (Agentic UI Protocol) lets an application express what is shown and what actions are available. A runtime then renders the parts that fit its device capabilities, instead of treating one screen's pixels as the application itself.
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Blocklet
A Blocklet is ARC's deployable unit. It keeps an application's declared content, configuration, and runtime needs together, so the unit being run is easier to understand and manage.