Automated summary
This skill provides a template and guide for creating or updating functional design documents (機能設計書) based on a product requirements document (PRD).
Strengths
- Provides a structured template for consistent documentation
- Establishes a clear hierarchy between PRD and functional design
- Guides updates while preserving existing documents
Limitations
- Requires an existing PRD to be effective
- Generic template may need project-specific tailoring
- Does not cover detailed technical architecture
Use this skill when you need to create a new functional design document or update an existing one, starting from a validated PRD.
Avoid using it if no PRD is available, or if the design is purely technical and does not require formal documentation.
Security analysis
SafeThe skill only uses Read and Write tools to create a documentation file; there are no execution of commands, network access, or any potentially harmful operations.
No concerns found
How this analysis is madeExamples
Create a functional design document for the user authentication feature based on the PRD at docs/product-requirements.md, following the template in template.md.Update the functional design document in docs/functional-design.md to reflect the new requirements for the payment module as described in the latest PRD.name: functional-design description: 機能設計書を作成するための詳細ガイドとテンプレート。機能設計書作成時にのみ使用。 allowed-tools: Read, Write
機能設計書作成スキル
このスキルは、高品質な機能設計書を作成するための詳細ガイドです。
前提条件
機能設計書作成を開始する前に、以下を確認してください:
docs/product-requirements.md が作成されている
必須: PRDが以下の場所に存在する必要があります:
ファイルパス: docs/product-requirements.md
機能設計書は、PRDで定義された要件を技術的に実現する方法を詳細化します。
既存ドキュメントの優先順位
重要: docs/functional-design.md に既存の機能設計書がある場合、
以下の優先順位に従ってください:
-
既存の機能設計書 (
docs/functional-design.md) - 最優先- プロジェクト固有の設計が記載されている
- このスキルのガイドより優先する
-
このスキルのガイド - 参考資料
- 汎用的なテンプレートと例
- 既存設計書がない場合、または補足として使用
新規作成時: このスキルのテンプレートとガイドを参照 更新時: 既存設計書の構造と内容を維持しながら更新
出力先
作成した機能設計書は以下に保存してください:
docs/functional-design.md
テンプレートの参照
機能設計書を作成する際は、次のテンプレートを使用してください: ./template.md
詳細ガイド
さらに詳しい作成ガイドは次のファイルを参照してください: ./guide.md
From the file to a first result
The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.
View the source and supporting filesThis download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.
1. Download the file
Download SKILL.mdFrom the root of a test project, save the file as .skill-downloads/functional-design-creation-mryiqgma/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.
Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.
mkdir -p '.skill-downloads/functional-design-creation-mryiqgma' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/functional-design-creation-mryiqgma/download' --output '.skill-downloads/functional-design-creation-mryiqgma/SKILL.md.part' && mv '.skill-downloads/functional-design-creation-mryiqgma/SKILL.md.part' '.skill-downloads/functional-design-creation-mryiqgma/SKILL.md'2. Check prerequisites
Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.
Tools declared by the author (check availability in your agent): Read, Write
No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.
The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.
3. Load the skill
After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.
Claude Code
test -f '.skill-downloads/functional-design-creation-mryiqgma/SKILL.md' && test -s '.skill-downloads/functional-design-creation-mryiqgma/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/functional-design' && cp -R '.skill-downloads/functional-design-creation-mryiqgma' '.claude/skills/functional-design'Cursor
test -f '.skill-downloads/functional-design-creation-mryiqgma/SKILL.md' && test -s '.skill-downloads/functional-design-creation-mryiqgma/SKILL.md' && mkdir -p '.cursor/skills' && test ! -e '.cursor/skills/functional-design' && cp -R '.skill-downloads/functional-design-creation-mryiqgma' '.cursor/skills/functional-design'Codex
test -f '.skill-downloads/functional-design-creation-mryiqgma/SKILL.md' && test -s '.skill-downloads/functional-design-creation-mryiqgma/SKILL.md' && mkdir -p '.agents/skills' && test ! -e '.agents/skills/functional-design' && cp -R '.skill-downloads/functional-design-creation-mryiqgma' '.agents/skills/functional-design'OpenSkills
OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.
Official OpenSkills installationopenskills install './.skill-downloads/functional-design-creation-mryiqgma'openskills read 'functional-design-creation-mryiqgma'Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.
For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.
openskills syncManual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.
4. Try a first task
Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:
Read .skill-downloads/functional-design-creation-mryiqgma/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.
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