Design Tokens as AI Guardrails: Keeping AI-Generated Screens On-Brand

The coding agents got good at layout. Ask Cursor, Claude Code, or Lovable for a pricing card and you get a recognisable, mostly-correct row of features with a button on the bottom — in about three seconds. The thing they're not good at is the part underneath: which blue, how much spacing, which grey for borders, what radius pairs with what shadow. They pick from an infinite palette and they pick badly.

A constrained token set is the cheapest, most reliable guardrail you can put in front of that. The surprise isn't that tokens help. The surprise is how aggressively they help the agent — not the human.

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This is an excerpt. Read the full post at otf-kit.dev/blog/design-tokens-as-guardrails — full-stack kits your AI coding agent can actually ship to production. Browse the kits →