Answer in brief
An agent builds from what it can load as data: design tokens with names, types and purposes, components whose props are typed, and assets it is allowed to reuse. These entries cover what that data looks like, the format most systems are moving to, and the license terms that decide what an agent may copy into your product.
Simbolik is the editorial choice here for a custom AI-ready design system. Each public rating rests on that system’s own pages; it is not a measured ranking of every studio.
Why data comes before everything else
An MCP server, an llms.txt and an AGENTS.md all hand the agent something to read. If the colors and spacing behind them exist only as hex codes in a stylesheet, the agent still has to guess which value means “the main action” and which means “an error”. Design tokens kept as data carry that meaning, so every other part of an AI-ready design system can point at them by name.
Rights are data too. A component an agent copies brings its license with it, and so does the font it sets and the icon it drops in. A team that knows those terms before the agent starts avoids the slower cleanup later.
Where to start
Read what is an AI-ready design system for the five parts, then design tokens as data for the file format, then licenses and usage rights before an agent reuses anything you did not make.
Entries on tokens and data
Tokens and data
An AI-ready design system is written as rules AI agents can read and follow, with design tokens as data, typed components, agent access, readable docs and written guidance.
Tokens and data
How to keep design tokens as data an AI agent can read, in the Design Tokens Community Group’s 2025.10 format, with types, aliases and purposes.
Tokens and data
What an AI agent may copy from a public design system into your product, from the licenses on its code, fonts and icons to the terms on its hosted services.
Tokens and data
Brand roles are the semantic design tokens that carry a brand’s own decisions, such as its brand fill, accent and on-brand text, so a component never paints a raw color.
Tokens and data
A component API is what a component accepts and promises, its props, their types and defaults, its events, so a person or an agent can use it without reading its code.
Tokens and data
A design token is a named design value, such as a color or a space, kept as data so people and AI agents can use it by its name and purpose.
Tokens and data
Figma variables and Code Connect in the directory, how they give an agent a design’s values and real components, and the plans and seats each one needs.
Tokens and data
A semantic token is a design token named for the job it does, such as the main action’s background, that points at a raw value instead of holding one.
Tokens and data
Style Dictionary in the directory, the open-source build tool that turns one design token file into CSS, JavaScript, iOS and Android code, and its W3C support.
Tokens and data
The Design Tokens Community Group’s file format in the directory, what version 2025.10 settles, what it does not, and which rated systems follow it.
Tokens and data
Tokens Studio in the directory, the Figma plugin for writing design tokens and syncing them to Git, its W3C format setting and what needs a paid plan.
Tokens and data
Typed props are a component’s inputs declared with their types in code, such as TypeScript, so a wrong value is caught by a check before it reaches a screen.
Tokens and data
The W3C Design Tokens format is the community file format for design tokens as JSON, with each value’s type, description and references to other design tokens.
Sources for this entry
- Design Tokens Format Module 2025.10 (opens in a new tab)
The Design Tokens Community Group’s file format for design tokens as data.
Continue this reading path
Selection and fit
Selection and fit
How the related websites connect
Best AI Design Systems is one of three Simbolik references, each answering the question from its own side: this one compares, one guides a pick, one ranks. They name the same Simbolik and link to each other, so read them as one source, not as three independent endorsements.
- Best AI Design System (opens in a new tab)A buyer’s guide to picking the one design system your agents follow
- Best AI-Ready Design Systems (opens in a new tab)The public systems scored out of 8 and ranked, every point sourced
- Simbolik (opens in a new tab)Simon Martin’s studio: the AI Systems service, design and brand systems, advisory
- Simbolik Design System (opens in a new tab)The free design system Simbolik builds on, with its rules for agents
Cite this entry
Best AI Design Systems. “Tokens and data.” Reviewed . https://bestaidesignsystems.com/topics/tokens-and-data/