saas-landing-builder

SaaS Landing Builder

You are Step 4 — the final step. You ship a runnable Next.js landing page that converts visitors into waitlist signups.

Preconditions (hard)

Before doing anything else, verify:

1. brands/<slug>/approval.json.approved === true — if not, defer to saas-brand-approval.
2. brand.json, saas-context.json, brand-guidelines.md all exist.
3. mcp__higgsfield__* tools are reachable — if not, stop and report.

Output

The exact file tree is specified in templates/landing/STRUCTURE.md. Generate every file fresh — there is no source code to copy. STRUCTURE.md is a spec, not a template.

Build procedure

1. Scaffold

Generate the file tree fresh under sites/<slug>/ following templates/landing/STRUCTURE.md:

• Create directories listed in the spec.
• Write each file using brand-aware content (palette → tailwind.config.ts, fonts → app/layout.tsx, copy → copy-writer).
• package.json.name = <slug>-landing. Dependencies per STRUCTURE.md.

There are no source files to copy. Every file is authored by you, per-brand.

2. Generate Higgsfield motion assets

Call mcp__higgsfield__generate_video for each:

• Hero loop — 6–10s ambient loop matching brand mood. Will be used as <video autoplay muted loop playsinline> background.
• Animated logo reveal — short reveal of the primary logo (from approval.primaryLogo). Used in the nav on first scroll.
• 3 feature micro-loops — one per Feature card. Small, 3–5s each, looping cleanly.

Save MP4s under sites/<slug>/public/motion/. See animation-rules.md for prompt patterns and constraints.

3. Copy generation

For every text string on the page, draw from brand.json + saas-context.json. Use copy-rules.md.

Delegate to agents/copy-writer.md for full-page copy in one pass — it keeps voice consistent.

4. Section assembly

Follow section-recipes.md for the exact section order and what each must contain:

1. Nav — logo + single CTA scrolling to #waitlist
2. Hero — headline, sub, primary CTA, Higgsfield hero loop
3. Problem / Promise — 1 sentence each
4. How it works — 3 steps with small animated illustrations
5. Features — 3–6 cards with scroll-triggered reveals + feature micro-loops
6. Social proof — logos / testimonials slot (or "coming soon")
7. Pricing teaser — "Founding pricing at launch — join waitlist"
8. FAQ — 4–6 SaaS-relevant questions
9. Waitlist — bottom, mandatory
10. Footer — minimal: brand + waitlist nudge + year

5. Wire the waitlist backend

Delegate adapter choice + wiring to saas-waitlist-backend. Default: local JSON file (no external deps). If SUPABASE_URL + SUPABASE_ANON_KEY exist in env, use Supabase.

6. Smoke check

After scaffolding:

• bun install (or npm install)
• bun run build — must compile cleanly
• Print to chat: cd sites/<slug> && bun dev to run

End-of-step message

"Landing page ready at sites/<slug>/. Run cd sites/<slug> && bun dev and open http://localhost:3000. Waitlist posts to: {backend}. Higgsfield motion assets live under public/motion/."

Hard rules

1. Waitlist at the bottom, always. <Waitlist /> is the second-to-last child of <main>, with <Footer /> after it. Removing it is a defect.
2. Hero motion via Higgsfield. If you can't generate one, the hero gets a static fallback BUT you must surface the issue to the user.
3. prefers-reduced-motion honored. Every animated component checks useReducedMotion() from Framer Motion and serves still alternatives.
4. No lorem ipsum. All copy from brand.json + saas-context.json. Sections with no source data say "TBD — content slot" explicitly, not filler.
5. Tailwind tokens from brand-guidelines.md. Map the palette into tailwind.config.ts theme.extend.colors.
6. Type pairing from brand-guidelines.md. Load via next/font in app/layout.tsx.

Delegation

• Heavy build (multiple file writes, Higgsfield calls, install) → agents/landing-builder.md.
• Copy writing pass → agents/copy-writer.md.

Related

• section-recipes.md
• animation-rules.md
• copy-rules.md
• ../higgsfield-recipes/SKILL.md
• ../saas-waitlist-backend/SKILL.md
• templates/landing/STRUCTURE.md — the file-tree spec (no code, just structure)