What is landing-kit-building CLAUDE.md?

A rulebook for building landing pages—web pages designed to explain an offer and prompt visitors to contact or sign up—using basic web files and Vercel hosting.

Creating new landing pages, applying the project's design tokens, checking for visual or typography problems, and preparing them for Vercel.

It sets fixed design and coding rules so pages stay consistent, editable, and focused on a request form rather than unsupported features.

How dkadts/landing-kit-building configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to dkadts/landing-kit-building. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/dkadts/landing-kit-building/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/dkadts/landing-kit-building

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/dkadts/landing-kit-building/claude-md.svg)](https://agentmods.dev/instructions/dkadts/landing-kit-building/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/dkadts/landing-kit-building/claude-md"><img src="https://agentmods.dev/badge/instructions/dkadts/landing-kit-building/claude-md.svg" alt="Measured on agentmods" height="20"></a>

Per session 1,316 This file is loaded in full into every session.

When invoked 1,316 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.01316	$0.01316
Opus 5	$0.00658	$0.00658
Sonnet 5	$0.00263	$0.00263
Haiku 4.5	$0.00132	$0.00132

Measured 8d ago against content hash 627180ea84d7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

landing-kit-building CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Landing Kit — Protocol for AI Agents

A universal system for building landing pages. Vanilla HTML/CSS/JS + Vercel. Primary CTA is a request form (no payment integrations).

7 rules (default for all sessions)

Strict isolation. Edit only the files the user named explicitly or that clearly belong to the current task. Do not "improve" adjacent code.
DESIGN-LOCK.md is frozen. If a field is marked LOCKED — do not change it. Change only through explicit user override with an entry in the decision log.
No hardcode. All colors, sizes, paddings, fonts, easing, duration — from site/css/tokens.css. If a value is missing — first add it to tokens (with user approval), then use it. Hardcoded px/#hex/ms in CSS or JS is blocked.
Algorithmic approach. Paddings and sizes — via Flexbox / Grid / calc() / vw. No "by eye".
User owns commits. Do not run git add, commit, push, reset — the user versions manually.
Typography discipline (English). No hanging short words at line end (articles, prepositions, conjunctions, auxiliaries, short pronouns, dashes) — tie them to the following word with  . No orphans — the last line of a heading or paragraph must have ≥ 2 words. Print-typography rules apply. Enforcement via /typography, called automatically by /build and checked by /audit. English-only; do not run on other languages.
References priority. Every element approved during /refs, /design-lock, /animation, or /icons becomes a required entry in references/approved-manifest.md. /build will not save a section that omits a relevant manifest item. /audit fails on any unchecked item. Silent drops are the failure mode this rule exists to prevent — always ask the user to remove an item explicitly with a decision-log entry.

Workflow for a new landing (mandatory order)

1.  /brief          Survey + brief. First question: desktop-first or mobile-first
2.  /inbox          Sort client materials from inbox/
3.  /copy-analyze   Deep text analysis → brief/copy-analysis.md
4.  /refs           References parsed by aspect + approved-manifest.md
5.  /design-lock    FREEZE DESIGN-LOCK.md (spacing, type, color, motion, ...)
6.  /blocks         Config for interactive blocks (form, modal, chat, ...)
7.  /animation      Motion brief → brief/animation.md (appends to manifest)
8.  /tokens         Generate site/css/tokens.css from DESIGN-LOCK
9.  /media          Media pipeline (WebP/AVIF, resize, posters)
10. /icons          Hybrid icons: libraries + AI fallback (appends to manifest)
11. /build          Section assembly (guard against slop + hardcode + manifest coverage + typography pass)
12. /mobile         Mobile adaptation with hardened rules + safety check
13. /audit          Anti-slop + perf + a11y + typography + references compliance
14. /deploy         Vercel + optional GCP Secret Manager for sensitive keys

Read the full file on GitHub · 94 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

8d ago First seen · 94 lines · 1,316 tokens per session scan A 627180ea84d7

Subscribe to this mod's changes

landing-kit-building CLAUDE.md is an instructions file published in the GitHub repository dkadts/landing-kit-building (2 stars, last pushed 19d ago), licensed MIT. It adds 1,316 tokens to every session, about $0.0066 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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