Meridian: a design system for SaaS products people use all day: admin consoles, CRMs and internal tools. Calm, neutral and precise: Manrope headlines over Inter, Meridian Teal with one Burnt Amber accent, tone rather than shadow. Each is an original design system (not a brand look-alike) in the open DESIGN.md format that Claude Code, Cursor and Codex read before building UI: DESIGN.md, W3C DTCG tokens, a Tailwind v4 theme, CSS variables, a shadcn/ui theme (light and dark), a Claude skill,…

How well AI agents will use your API, from its OpenAPI 3.0/3.1 spec: a 0-100 score over 13 rules (operationIds, summaries, descriptions, parameters, enums, examples, JSON bodies, response and error schemas, pagination, auth, idempotency, tool count), every finding, and a suggested fix per operation. POST {"url": "https://…/openapi.json"} or {"spec": "<JSON or YAML>"}.