skill-authoring

Claude Code Plugins

日本語

A collection of Claude Code plugins for development workflow.

Plugins

task-tracker

Lightweight task/ticket tracker using TSV files and shell scripts. While Claude Code's built-in Task List automatically manages work steps internally, task-tracker stores tasks in TSV and Markdown files that humans can read and edit directly.

Features:

• Human-readable TSV + Markdown format (.tasks/)
• Slash commands: /task-tracker:add, /task-tracker:list, /task-tracker:show, /task-tracker:update, /task-tracker:close
• Categories: bug, improvement, task
• Includes a skill for Claude to automatically track issues found during development

Usage:

/task-tracker:add Fix login button not responding
/task-tracker:add bug: API returns 500 on empty payload
/task-tracker:list
/task-tracker:list all
/task-tracker:show 1
/task-tracker:update 1 -s "Updated title"
/task-tracker:close 1 Fixed by updating the handler

skill-authoring

Context design framework for Claude Code Agent Skills. Claude's performance depends on the context it receives — this plugin provides principles and workflows for designing skills that give Claude the right information at the right time.

Core principles:

• Context Design — Control what enters, flows through, and exits each skill's context to maximize Claude's accuracy
• Execution Pattern Selection — Choose the optimal isolation level (main session, context:fork, Built-in/Custom SubAgent) for each task
• Skill Composition — When multiple agents share domain knowledge, use the skills field for Dependency Injection rather than duplicating content or creating fragile cross-references
• Quality Checklist — 28-item evaluation across 6 categories (Context Design, Structure, Frontmatter, Content, design.md, Scripts)

Workflows:

• Creation: Requirements → Pattern Selection → Design → Structure → Implementation → Quality Check → Test
• Review: Load → Compare Against Guidelines → Checklist Evaluation → Improvement Proposals → Report

Usage:

Create a new skill for checking Slack notifications
Review the task-tracker skill
What are the skill authoring guidelines?

checking-oss-release

Checks open source projects for security leaks, privacy issues, and license compliance before release. Can also set up git pre-commit hooks.

Features:

• Three modes: Setup (install pre-commit hook), Quick (staged files check), Full (all files audit)
• Secret pattern detection (API keys, private keys, AWS credentials, GitHub tokens, etc.)
• Git email privacy check (noreply enforcement)
• .gitignore coverage validation
• Dependency license compatibility scan with license matrix
• THIRD_PARTY_LICENSES attribution check
• Bundled pre-commit hook script

Usage:

Run an OSS release check
Setup pre-commit hooks for security
Quick security check on staged files
Full pre-release audit

designing-test-cases

Guides systematic test case design using established testing techniques. Works with any tech stack and is TDD-compatible (test-first, driven by specs and types rather than implementation).

Features:

• Two workflows: New test design and existing test review (gap analysis)
• Seven test design techniques: Equivalence Partitioning, Boundary Value Analysis, Null/Undefined Handling, Type Mismatch, State Transition, Combination/Interaction, Error/Exception
• Produces structured test case matrices (technique × input × expected result)
• Detailed technique reference with rules, checklists, and examples

Usage:

Design test cases for the login function
Are these tests enough? Review test coverage
What boundary values should I test?

hardening-dev-environment

Layered defense for a development environment running Claude Code. Each layer addresses a distinct attack class — npm/PyPI supply chain compromise, prompt-injection-driven scope escalation, credential exfiltration, persistence via config tampering, indirect injection from fetched content. Layers compose: static config prevents, runtime hooks catch known bypasses, the trust-boundary reminder shapes how fetched content is interpreted.

Layered Defense Map: