LLM Feature Design

Q: What is a Claude Code skill and how does the LLM Feature Design skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. LLM Feature Design is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Product · Sub-category: product-misc · Last updated: 2026-10-25

ai:llm

アプリに組み込む LLM 機能 (チャット・要約・分類・RAG など) のシステムプロンプトと周辺構造を、AI ベンダー公式・OWASP・査読論文で裏付けたベストプラクティスに沿って設計する。回答範囲の制限、非信頼テキストの扱いとプロンプトインジェクション対策、ハルシネーション抑制、ガードレールの多層化、評価セットの作り方を references/ から参照する。「LLM 機能を実装したい」「システムプロンプトを設計して」「AI が関係ない質問に答えてしまう」「プロンプトインジェクション対策」「AI の回答範囲を絞りたい」「RAG の回答を文書に基づかせたい」などで起動。Claude Code 自身への作業依頼プロンプトの整形は対象外 (prompt-refine を使う)。

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

アプリケーションに組み込む LLM 機能を、一次情報で裏付けの取れた作法に沿って設計する。references/ は OpenAI・Anthropic・Google の公式ドキュメント、OWASP LLM01、NIST AI 600-1、NVIDIA NeMo / Guardrails AI などの OSS 実装、XSTest (NAACL 2024 採択) を 2026-07-26 時点で調査した結果に基づく。

What this skill does

LLM Feature Design is a community-contributed Claude Code skill in the product-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/llm-feature-design/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The LLM Feature Design Claude Code skill is built for product managers, product designers, and cross-functional teams planning, shipping, and measuring product features. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 211,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/llm-feature-design
curl -L https://claudskills.com/skills/llm-feature-design/SKILL.md \
  -o ~/.claude/skills/llm-feature-design/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/llm-feature-design/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/llm-feature-design/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\llm-feature-design\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the LLM Feature Design Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/llm-feature-design/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the LLM Feature Design skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the LLM Feature Design skill?

Use LLM Feature Design when your Claude Code task falls under the Product category — specifically in the product misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use LLM Feature Design" or describe the task and let Claude pick). Browse related skills at /category/product/.

What is a Claude Code skill and how does the LLM Feature Design skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. LLM Feature Design is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/skanehira/dotfiles/blob/531455f6bfd4636cc9e28f53be2cd7f6e264aae8/agents/skills/llm-feature-design/SKILL.md
License: MIT
Author: skanehira

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

skanehira. (2026). LLM Feature Design [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/llm-feature-design/

BibTeX

@misc{llm-feature-design-2026,
  author    = {skanehira},
  title     = {LLM Feature Design [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/llm-feature-design/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/llm-feature-design.svg)](https://claudskills.com/skills/llm-feature-design/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-10-25 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/llm-feature-design/#security)

More Product skills

Browse all Product skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Product skills → Top 100 skills

Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

Part of Acreator Store — Adam Lankamer's AI tools: PerfectStudio · Ucaption · UTagger · AutoXPoster · TestYourSkills · AutomationFlows · Au Naturel · Telegram @acreatorstore