Decision Log Skill

Turn a non-code decision or investigation into a structured Obsidian note. No git context — entirely driven by interview. Designed for research, design choices, planning, and any work where thinking and judgment matter more than code changes.

Configuration

VAULT_PATH = /path/to/your/vault/Dev Logs

Replace with the actual folder path in your Obsidian vault.

Workflow

Step 0 — Check configuration

Check if VAULT_PATH is still set to the placeholder value /path/to/your/vault/Dev Logs.

If it is:

1. Ask the user: "Obsidian vault 경로를 설정해주세요. decision-log 파일이 저장될 폴더 경로를 알려주세요. (예: /Users/yourname/Documents/MyVault/Dev Logs)"
2. Once the user provides the path, update this SKILL.md file — replace the placeholder with the actual path
3. Confirm the path is set and proceed

If VAULT_PATH is already configured, skip this step silently.

Step 1 — Receive topic input

The user provides:

• Topic name: a short label for the decision or investigation

If missing, ask for it before proceeding.

Step 2 — Find related notes in the vault

Use the obsidian-cli skill to search for existing notes related to this topic:

obsidian search query="{topic-name}" limit=10
obsidian search query="decision-log" limit=10

If Obsidian is not running, skip silently and proceed without wikilinks.

Step 3 — Interview the user

Ask the following 5 questions all at once:

1. 어떤 문제나 상황이 있었나요? 왜 이 결정이 필요했나요?
2. 해결을 위해 무엇을 조사하거나 참고했나요? (문서, 사례, 사람 등)
3. 어떤 선택지들을 검토했나요? 각각 어떤 장단점이 있었나요?
4. 최종적으로 어떤 결정을 내렸고, 핵심 근거는 무엇인가요?
5. 이 결정으로 해결되지 않는 부분이나 다음에 이어질 것이 있나요?

Step 4 — Write the decision log

Use the obsidian-markdown skill for structure — frontmatter, headings, callouts, and wikilinks.

Use the human-writer skill for all prose content within each section. Apply its vocabulary, structural, and voice rules to every sentence written. The text should sound like the user wrote it, not like an AI summarized it.

Save the file to:

{VAULT_PATH}/{YYYY-MM-DD}-{topic-name}.md

Where {topic-name} is the topic name lowercased with spaces replaced by hyphens.

Output Structure

frontmatter   → title, date, tags: [decision-log], status: done
# {Topic Name}
## 배경 / 문제       → 왜 이 결정이 필요했는지
## 검토한 것들       → 조사하거나 참고한 것들, [[wikilinks]] where relevant
## 고려한 옵션       → 선택지와 각각의 장단점
               → use > [!warning] for tradeoffs
## 결정 및 근거      → 최종 결정, 1인칭으로
               → use > [!insight] for the key reasoning
## 다음 액션         → use > [!question] for unresolved items, omit if nothing

You MUST write the entire log in Korean, regardless of the language the user used. Keep each section concise — this is a log, not documentation.