market-skill

market-skill is a skill for Claude Code, Codex from Yasuui/ystack. It costs 81 tokens per session (2,458 once invoked), scanned A, original, MIT.

A guide for creating marketing materials, including visual direction, motion design, written copy, platform-specific posts, and brand identity.

In plain words
What is it for?
Use it to make Remotion videos, Nano Banana graphics, Substack headers, posts for X and LinkedIn, product-launch content, and brand assets.
Why use it?
It gives an AI clearer rules for producing consistent marketing work instead of generic content with unclear branding or tone.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to make Remotion videos, Nano Banana graphics, Substack headers, posts for X and LinkedIn, product-launch content, and brand assets.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/yasuui/ystack/market-skill
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Yasuui/ystack --skill market-skill
Clone the repo
git clone --depth 1 https://github.com/Yasuui/ystack

Made for: Claude Code, Codex.

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.

agentmods badge for market-skill

README.md
[![agentmods](https://agentmods.dev/badge/skills/yasuui/ystack/market-skill/github.svg)](https://agentmods.dev/skills/yasuui/ystack/market-skill)
Your own site
<a href="https://agentmods.dev/skills/yasuui/ystack/market-skill"><img src="https://agentmods.dev/badge/skills/yasuui/ystack/market-skill/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for market-skill

Your own site · 80×15
<a href="https://agentmods.dev/skills/yasuui/ystack/market-skill"><img src="https://agentmods.dev/badge/skills/yasuui/ystack/market-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,458 The whole file, excluding the scripts and references it only reads on demand.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00081 $0.02458
Opus 5.5 $0.00032 $0.00983
Sonnet 5.5 $0.00016 $0.00492
Haiku 4.5 $0.00008 $0.00246

Measured 1mo ago against content hash 62e844dee859, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

market-skill 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 1mo 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.

.agents/skills/market-soft-skill/market-skill/SKILL.md · 208 lines

How it starts

The opening of the file, as written. The whole thing — 208 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Market Skill

Settings

Adjust these three dials (1–10) before generating any asset:

BRAND_INTENSITY = 8       // How distinct and ownable is the visual identity?
                          // 1-3: Minimal, almost invisible branding
                          // 4-7: Balanced — clear brand without being loud
                          // 8-10: Strong, immediately recognisable. Every pixel serves the brand.

MOTION_DRAMA = 7          // How cinematic and choreographed is the motion?
                          // 1-3: Almost no animation. Typography does the work.
                          // 4-7: Purposeful motion. Each element earns its entrance.
                          // 8-10: Choreographed sequences. Apple-level timing precision.

COPY_DIRECTNESS = 8       // How confident and direct is the language?
                          // 1-3: Soft, benefit-focused, descriptive
                          // 4-7: Confident but approachable
                          // 8-10: Blunt, specific, zero hedging. No adjectives without proof.

Visual Identity Standards

Color

The most common mistake: using more than one accent color.

  • Pick one accent. Use it as a signal, not decoration.
  • The background is not #000000. Use deep, slightly-tinted darks: #080810, #0c0c14, #0a0f0f.
  • Never use the generic "AI gradient" — purple-to-blue linear gradient. It signals you ran out of ideas.
  • White is not #ffffff for body text. Use rgba(255,255,255,0.80) or rgba(255,255,255,0.65). Pure white on dark backgrounds is harsh.
  • Tint your shadows. If background is #080810, shadows should be rgba(0,0,0,0.6) with a slight blue tint — not pure black.
  • Glow should be subtle. rgba(accent, 0.12) in a radial gradient at the top. Not a lighthouse.
  • Build a palette of 4 values: background, surface, accent, and muted text. Nothing else.

Typography

  • Display text (48px+) gets letter-spacing: -2px to -4px. Tight headlines look considered.
  • Body text gets letter-spacing: 0 or very slightly positive (0.1px max).
  • Never mix more than two typefaces in one asset.
  • Mono fonts for technical labels, file paths, version numbers, and metadata. Not for body copy.
  • Line-height for headlines: 1.0 to 1.08. Tight. Marketing is not a blog post.
  • Line-height for body: 1.5 to 1.6. Breathing room.
  • Font weights: use 400 (body), 500 (sub-labels), 700 (emphasis), 800 (display). Skip 600 for display — it looks indecisive.
  • All caps labels: only in mono, only for metadata-level information (version tags, dates, categories). Never all-caps for headings.

Read the full file on GitHub · 208 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.

  1. 1mo ago First seen · 208 lines · 81 tokens per session scan A 62e844dee859

Subscribe to this mod's changes

market-skill is a skill published in the GitHub repository Yasuui/ystack (1 stars, last pushed 23d ago), licensed MIT. It adds 81 tokens to every session and 2,458 once invoked, about $0.0003 per session on Opus 5.5. 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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