Step 3Phase 1 — Product definition~20 min

Copy

Write every word on the marketing site from the PRD. One file holds all landing copy; components pull strings from it. You never write copy ad-hoc inside JSX.

At a glance

Purpose: turn the spec into on-voice, on-brand homepage strings in one source of truth.

Run: ai_rules/generators/copy_generator.md

Output: ai_rules/app_approach/copy.md

Feeds: the homepage components in app/ and components/ import their strings from it.

Why it exists

Default LLM marketing copy is interchangeable filler. This generator reads your PRD.md and config.ts and writes each block as problem → outcome → proof → single CTA, in a builder's voice, with the humanizer rules enforced. Copy lives in one file so it stays consistent and a rewrite is one edit, not a hunt through JSX.

How to run it

Point the generator at the PRD

It reads PRD.md (primary) and config.ts (names, plan structure, prices). If the PRD is a placeholder, the generator stops and asks you to fill it. It will not invent a product.

Generate each block

Hero, features, how-it-works, pricing, FAQ, final CTA. Each block leads with the reader's problem, states the outcome, backs it with one specific proof, and ends with at most one CTA.

Humanizer pass

Re-read the whole file. Kill the AI-vocabulary words, confirm zero em dashes, vary sentence length, pass the "who wrote this?" test (a specific builder, not anyone).

Save and wire

Text

ai_rules/app_approach/copy.md

Wire each block's strings into the matching homepage component. Keep pricing in sync with config.ts.

The code-meet-ai voice

The site speaks as a builder who ships, not a marketing department. These rules override any default "make it punchy" instinct:

First person, builder voice. Specific over general. Name the stack and the real hour saved.
Dry, declarative, present tense. Raw over sanded.
Zero em dashes. Sentence-case headings. Bold sparingly.
One social-proof number where you have one. Otherwise a , never a fabricated metric.

Per-project, never a borrowed brand

The voice is the register; the product is yours. Never paste a sample product, its prices, or its stack into your site. Ground every claim or leave a TODO.

Best practices baked in

One primary CTA per page, the same one in hero and final CTA.
No number, no claim. Use a TODO instead of a guess.
Copy is the source of truth. Components import from copy.md; copy is not scattered across JSX.
Re-run the humanizer after any edit. AI patterns creep back in every time.

Sibling of design, not a dependency

Copy and design both read the same PRD independently. Run them in either order. Together they define how the inherited homepage components look and read.

← 2. PRD / spec 4. Design system →