Ns Ui

ns-ui

[](LICENSE) [](https://design.helpmarq.com) [](https://github.com/nikolas-sapa/ns-ui/actions/workflows/ci.yml)

228 React components you install by URL, no package to depend on. Every one is built around a single interaction and gated by a Playwright suite that refuses to pass a component whose hover looks identical to its resting state.

Two collections. core (188) is restrained and production-facing, Geist-dark. loud (40) is a deliberately flashy showcase.

Browse them live at design.helpmarq.com.

| | | |---|---| | | | | hero-particles-webgl — a field that answers the cursor | hero-isobar-contours — contour lines that bunch toward the CTA | | | | | gallery-coverflow-caustic — drag to scrub, flick for momentum | picker-pareto-frontier — pick a point on a pareto frontier | | | | | compare-crack-seam — the before/after divider is a fracture | not-found-knockout — type carved out of the surface |

Install

Any shadcn-configured project, zero config:

npx shadcn add https://design.helpmarq.com/r/.json

That drops the source at components/ui/.tsx and installs the component's npm dependencies. There is no ns-ui package and nothing to keep in sync. The code is yours to edit.

New project:

npx shadcn init -d
npx shadcn add https://design.helpmarq.com/r/gallery-coverflow-caustic.json

For agents

GET https://design.helpmarq.com/llms.txt

One fetch returns the whole catalog as plain text: every component, its props, the situation it suits, and its exact install command. No tool definitions, no pagination. An agent that can make an HTTP request can pick the right component and install it in two steps.

llms-full.txt at the same origin adds the full behavioral description per component, hand-written rather than derived from tags, for the cases where several components share a UI role and a model has to tell them apart.

/registry.json serves the standard shadcn registry index for tools that expect it.

Prefer tools over a one-time fetch (an agent working across a whole session, not just picking one component up front)? [mcp/](mcp/) is an MCP server over the same catalog — search_components, get_component (full prop signature + real source), list_categories, install_command, and get_conventions (the token/theming contract). npx -y @nikolas.sapa/ns-ui-mcp, stdio transport, per-client config at design.helpmarq.com/connect or [mcp/README.md](mcp/README.md).

There's also a thin CLI, [cli/](cli/) (@nikolas.sapa/ns-ui): npx @nikolas.sapa/ns-ui add installs a component, search/list/info/ categories cover the rest of the catalog from a terminal. See [cli/README.md](cli/README.md).

The gate

scripts/verify.ts is why the registry stays small. It drives every component through headless Chromium, screenshots each state against each theme, and hard-fails on:

• a console error, or a blank render
• hover byte-identical to default, or focus identical to an unfocused baseline

(an interaction that does not actually interact)

• dark and light byte-identical (a component that ignored the theme)
• an interactive control with no accessible name, role=switch|checkbox|radio

without aria-checked, a visible dialog with no accessible name, or controls Tab cannot reach

• a popover or menu that opens but lands clipped invisible behind an ancestor's

overflow: hidden, caught by hit-testing the opened element rather than measuring its box

The screenshots it produces are committed, so the claims above are auditable in the repo rather than asserted here.

Run it locally

npm install
npm run dev            # / lists components, /preview/ renders one
npm run verify         # the gate, in another shell, with dev running

Node 22.18 or newer.

Environment variables

Copy .env.example to .env and fill in what you need. Everything is optional locally — the app still runs and the email form still renders, it just returns an error on submit if the EmailOctopus vars are unset.

| Variable | Purpose | |---|---| | NEXT_PUBLIC_REGISTRY_ORIGIN | Overrides the public origin install commands and llms.txt resolve against. Defaults to https://design.helpmarq.com. | | EMAILOCTOPUS_API_KEY | Bearer key for the EmailOctopus v2 API, used by the email capture form (lib/actions/subscribe.ts). Server-only, never exposed to the client. | | EMAILOCTOPUS_LIST_ID | The EmailOctopus list contacts are added to. |

Adding a component means creating a folder with component.tsx, demo.tsx and meta.json; registration is automatic. See [CONTRIBUTING.md](CONTRIBUTING.md), and [AGENTS.md](AGENTS.md) if you are an agent working inside this repo.

License

MIT. See [LICENSE](LICENSE).

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: nikolas-sapa
• Source: nikolas-sapa/ns-ui
• License: MIT
• Homepage: https://design.helpmarq.com

Install and usage instructions live in the source repository linked above.