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Artbucket Cloud is this code, run for you at app.artbucket.io, hosted in the EU. There is a free plan; the others and their limits are on artbucket.io/pricing. Everything below works the same on a server of your own: swap in its address.

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Try it without an account

BrandHub, at hub.artbucket.io, serves every public brand to anyone, with no key and no sign-in. Point an agent that reads the web at it, or fetch it yourself:
Or hand an agent https://hub.artbucket.io/artbucket/artbucket/llms.txt and ask it for the primary color and the logo to use on a dark background. Three portals show what a published brand looks like, its pages and its downloads. They are unofficial showcases, made from each project’s public brand pages: Every address BrandHub answers is listed in Portals, BrandHub.

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1. Sign up

Make an account at app.artbucket.io with your email and a password, and type the code it emails you. The account gets an organization of its own, with a first workspace, and you are its admin. The library first asks what you want to do (manage your company’s brand, brand an open-source project, manage brands for clients, build a product’s design system, or give AI agents the brand) and keeps a short checklist for that answer at its top until it is done.

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2. Upload

Drop files anywhere on the library. Title, credit, keywords and C2PA Content Credentials are read from the file as it arrives, and a Figma or Google Docs link is kept as the link. See Assets.

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3. Make a brand

Brands in the sidebar, then New brand. Build it in the builder offers three starts:
  • Blank, then the brand’s setup: a main color, a heading and a text face, the logo and a sentence of voice.
  • From a domain: type it and Look it up, and the brand starts from the AdCP brand.json published there (A brand from a domain).
  • A template: Blender, Firefox or Rust, with their rules, theme, pages and logos, to edit into your own.
Start from this brand on any public BrandHub listing does the same from that brand. The other two starts in New brand are an AI agent (step 6) and a Git repository (brand as code).

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4. Write the rules and release

Edit opens the builder. Rules holds the brand’s records: a key, a value, a sentence on how to use it, and the context it applies to, such as color.primary on a dark background. The pages show those rules, so a changed color changes every page. Every edit is a draft until Release. See The canon.

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5. Publish a portal

Portals in the sidebar makes one: pick the brand and any collections, then who gets in (the workspace’s members, whoever has its password, or anyone). A portal open to anyone or behind a password answers at {address}.artbucket.page; a members’ one stays at app.artbucket.io/p/{address}. A domain of your own goes in Settings, Domains (A domain of its own). To put the brand on BrandHub, where agents read it without a key, Make public on its Sharing tab.

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6. Connect an agent

The MCP server’s URL is https://app.artbucket.io/api/v1/mcp. In Claude Code:
The first call opens a consent screen in the browser: pick the workspaces and what the agent may do (Suggest, Read or Edit). Connections in the sidebar has the steps for Claude, ChatGPT, Cursor and the rest. Then ask: “Give me the approved logo for a dark background.” The agent reads the rules, checks the use with check_use, and answers with a URL at the size it needs. See MCP.

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7. Or the CLI

login asks to suggest by default; add --scope write to push a brand. See CLI.

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Next

Where to start

The pages for brand teams, developers and agencies.

May I use this?

A yes or no on a use, with what to use instead.

Brand as code

The brand in a Git repository, synced both ways.

Run it yourself

The same code on your machine or your servers.