nippo

Claude Code Agent Skill for generating daily reports from session logs.

Overview

/nippo is a Claude Code skill that analyzes your Claude Code session logs and generates a daily report summarizing what you worked on.

Features

• Extracts user messages from Claude Code session logs
• Filters sessions by date (today, yesterday, or specific date)
• Groups work by project/repository
• Excludes subagent logs (focuses on main sessions only)
• Pre-filters by file modification time for performance
• Outputs a structured daily report in Markdown format

Available Languages

Directory	Language	Command
nippo/	Japanese (日本語)	/nippo
nippo-en/	English	/nippo
nippo-zh/	Chinese (中文)	/nippo
nippo-ko/	Korean (한국어)	/nippo

Installation

Clone the repository and copy your preferred language directory to Claude Code skills:

git clone https://github.com/t-daisuke/nippo.git
cp -r nippo/nippo ~/.claude/skills/       # Japanese
# or
cp -r nippo/nippo-en ~/.claude/skills/    # English
# or
cp -r nippo/nippo-zh ~/.claude/skills/    # Chinese
# or
cp -r nippo/nippo-ko ~/.claude/skills/    # Korean

Or in one command (English example):

git clone https://github.com/t-daisuke/nippo.git /tmp/nippo && cp -r /tmp/nippo/nippo-en ~/.claude/skills/

Usage

/nippo              # Today's report
/nippo yesterday    # Yesterday's report
/nippo 2026-01-22   # Specific date

Requirements

• macOS or Linux (including WSL2)
  • macOS: uses date -v/-j and stat -f
  • Linux: uses date -d and stat -c
  • OS is auto-detected at runtime
• jq command for JSON parsing
• Claude Code with Agent Skills support

Output Example

# Daily Report - 2026-01-22

## What I Did Today

### my-webapp
- Implemented user authentication with JWT
- Fixed login form validation bug
- Added unit tests for auth middleware

### api-server
- Refactored database connection pooling
- Updated API documentation

## Details

### Session: my-webapp
- Working Directory: /Users/alice/projects/my-webapp
- Branch: feature/user-auth

### User Messages
- Add JWT authentication to the login endpoint
- The form validation is not working, please fix it
- Write tests for the auth middleware

### Session: api-server
- Working Directory: /Users/alice/projects/api-server
- Branch: refactor/db-pool

### User Messages
- Optimize the database connection pool settings
- Update the README with new API endpoints

How It Works

1. collect-logs.sh scans ~/.claude/projects/ for session logs
2. Filters by modification time (±1 day) for performance
3. Extracts timestamp from first user message to determine session date
4. Outputs session metadata and user messages
5. SKILL.md instructs Claude to summarize the data into a daily report

License

MIT