creating-illustrations

A guided workflow for creating prompts for AI image generators such as Midjourney, DALL-E, and Stable Diffusion.

In plain words
What is it for?
Preparing prompts for album covers, product images, concept art, illustrations, and other generated visuals.
Why use it?
It turns a visual idea into a detailed prompt by collecting the subject, colors, lighting, viewpoint, mood, and style.

Skill for Claude CodeCodex

Part of the gen-ai-image-prompt-creator plugin — 7 skills, 7 commands shipped together

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.

agentmods
npx agentmods add skills/masayan1126/masayan-uni-code-plugins/illustration
Any agent
npx skills add masayan1126/masayan-uni-code-plugins --skill illustration
Clone the repo
git clone --depth 1 https://github.com/masayan1126/masayan-uni-code-plugins

Made for: Claude Code, Codex.

Or install gen-ai-image-prompt-creator, the plugin that ships this one along with the rest of its 7 skills, 7 commands.

Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,025 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00056 $0.01025
Opus 5 $0.00028 $0.00513
Sonnet 5 $0.00011 $0.00205
Haiku 4.5 $0.00006 $0.00103

Measured 3d ago against content hash 2db271356ba2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

creating-illustrations 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 3d 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.

plugins/gen-ai-image-prompt-creator/skills/illustration/SKILL.md · 72 lines

What it actually says

汎用イラストプロンプト作成

ワークフロー

  1. 用途確認: 用途を確認(アルバムカバー/商品写真/コンセプトアート/etc.)
  2. プリセット確認: 使用可能なプリセットの利用有無
    • プリセットあり → PRESETS.md から設定を適用
    • プリセットなし → ステップ3へ
  3. 要件収集: AskUserQuestion ツールで6つの要素をヒアリング
    • 主題・被写体: メインの対象と詳細
    • 色彩: カラーパレット、カラーコード
    • スタイル・画風: アニメ調/写実的/etc.
    • 雰囲気: ムード、感情
    • (オプション)光源・照明、視点・構図
  4. 情報構造化: 6つの原則に基づいて収集した情報を整理
  5. AIっぽさ緩和オプション確認: ANTI_AI_STYLE.md 参照
    • 「ベタ塗り」「デフォルメされたフォルム」を含めるか確認
  6. プロンプト生成: PROMPT_TEMPLATE.md 使用して実行可能なプロンプトを生成
  7. クリップボードコピー: AskUserQuestion で選択肢提示後、pbcopy(Mac)でコピー
  8. アイデア確認: progress/ideas.md をチェックし、該当するアイデアがあれば提案
  9. 成果物保存:
    • プロンプト: output/illustration/{タイトル}.md(ディレクトリがなければ作成)
    • 生成画像: output/illustration/images/{タイトル}.png
  10. 進捗更新: progress/ideas.md を更新(完了したアイデアにチェック)

6つの原則

高品質プロンプト作成の実証済みテクニック:

原則 説明
優先順位 最重要要素を冒頭に配置
具体性 単語ではなく詳細な説明を追加
光源 光の方向、質、色温度を指定
視点 カメラアングルと構図を明確化
画風 様式(印象派、アニメ等)を指定
色調 カラーパレットで雰囲気を統一

詳細は TECHNIQUES.md 参照

参照ファイル

プリセット一覧

プリセット名 概要
レトロオブジェクト 80-90年代ノスタルジック、ローファイアニメスタイル
ゆるふわインコ パステルカラー、癒し系手描き風イラスト

必須ルール

  • 優先順位を守り最重要要素を冒頭に
  • 具体的な詳細を含める(曖昧表現を避ける)
  • 光源・色彩を明確に指定してAI感を軽減
  • カラーコード(#XXXXXX)で正確な色指定
  • ネガティブプロンプトで不要要素を除外

著作権への配慮

  • 特定のアーティスト名・作品名の使用を避ける
  • スタイル・様式の一般的な説明を使用(例: "impressionist style" ✓ / "in the style of [artist]" ✗)
  • 不適切・差別的な表現を避ける
Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 3d ago First seen · 72 lines · 56 tokens per session scan A 2db271356ba2

Subscribe to this mod's changes

creating-illustrations is a skill published in the GitHub repository masayan1126/masayan-uni-code-plugins (5 stars, last pushed 5mo ago), licensed MIT. It adds 56 tokens to every session and 1,025 once invoked, about $0.0003 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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