dotnet-webapi
Build ASP.NET Core Web APIs with .NET 10 (C# 14.0). Supports project scaffolding, CRUD operations, Entity Framework integration, dependency injection, testing with xUnit, Docker containerization, and following 2025 best practices. Use when creating REST APIs, microservices, backend services, implementing CRUD operations, setting up Entity Framework, adding authentication/authorization, or containerizing .NET applications. Triggers on .NET, ASP.NET Core, C#, Web API, REST API, microservices, dotnet, csharp development tasks.
postgres-backup-restore
Automate loading PostgreSQL backups from SQL files into local databases running in Docker containers for debugging and testing. Use when working with PostgreSQL database backups, restoring QA/production data to local environments, setting up local debugging environments with real data, or when users mention loading/restoring database backups to Docker containers.
postgres-query
Execute SQL queries and data modifications on PostgreSQL databases running in Docker containers. Auto-detects running PostgreSQL containers and executes SELECT, INSERT, UPDATE, and DELETE operations. Use when working with PostgreSQL databases in containers for querying data, modifying records, analyzing database contents, or performing ad-hoc database operations. Triggers on database queries, SQL operations, data inspection, or PostgreSQL interactions.
ruby-rails
Ruby on Rails 8 and Ruby 3.2 backend development. Use when working on Rails applications, API development, ActiveRecord models, database migrations, service objects, serializers, RSpec testing, or Ruby code optimization. Triggers on Rails-specific patterns like controllers, models, migrations, jobs, concerns, serializers, and Rails configuration.
strudel
This skill should be used when working with Strudel.cc, a live-coding music environment. Use when creating musical patterns, drum sequences, melodies, basslines, or generative compositions. The user will always want to run Strudel code in the browser, either by copy-pasting or by providing a clickable URL with the code encoded in base64.
to-issues
Break a plan, spec, or PRD into independently-grabbable GitHub issues using tracer-bullet vertical slices. Use when user wants to convert a plan into issues, create implementation tickets, or break down work into issues.
tdd
Test-driven development with red-green-refactor loop. Use when user wants to build features or fix bugs using TDD, mentions "red-green-refactor", wants integration tests, or asks for test-first development.
ste-writing
Rewrite prose (docs, READMEs, PR descriptions, Linear tickets, runbooks, error messages, release notes, comments — never code) into ASD-STE100 Simplified Technical English to remove "AI slop". Use when asked to make writing not sound like AI, make docs clear or plain, enforce a controlled writing style, or write technical documentation that reads human. Two modes — strict (procedures/safety) and STE-flavored (general prose).
youtube-summary
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ubiquitous-language
Extract a DDD-style ubiquitous language glossary from the current conversation, flagging ambiguities and proposing canonical terms. Saves to UBIQUITOUS_LANGUAGE.md. Use when user wants to define domain terms, build a glossary, harden terminology, create a ubiquitous language, or mentions "domain model" or "DDD".
bevy
This skill should be used when working on Bevy game engine projects. It provides specialized knowledge for Bevy's Entity Component System (ECS) architecture, component-driven design patterns, system ordering, UI development, build strategies, and common pitfalls. Use this skill when implementing game features, debugging Bevy code, designing component architectures, or working with Bevy's UI system.
domain-driven-design
This skill should be used whenever domain modeling is taking place. It provides specialized guidance for type-driven and data-driven design based on Rich Hickey and Scott Wlaschin's principles. The skill helps contextualize current modeling within the existing domain model, identifies inconsistencies, builds ubiquitous language, and creates visualizations (Mermaid, Graphviz/DOT, ASCII diagrams) to communicate domain concepts clearly. Use this skill when designing types, modeling business domains, refactoring domain logic, or ensuring domain consistency across a codebase.
grill-me
Interview the user relentlessly about a plan or design until reaching shared understanding, resolving each branch of the decision tree. Use when user wants to stress-test a plan, get grilled on their design, or mentions "grill me".
improve-codebase-architecture
Find deepening opportunities in a codebase, informed by the domain language in CONTEXT.md and the decisions in docs/adr/. Use when the user wants to improve architecture, find refactoring opportunities, consolidate tightly-coupled modules, or make a codebase more testable and AI-navigable.
python-nix-uv
Set up Python projects using nix/direnv with uv for environment management. Use when creating new Python projects, initializing Python environments, or when the user wants automatic Python virtual environment setup with nix flakes.
skill-creator
Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations.
skill-improver
This skill should be used at natural checkpoints (after completing complex tasks, at session end, or when friction occurs) to reflect on skill and process execution and identify targeted improvements. Use when experiencing confusion, repeated failures, or discovering new patterns that should be codified into skills for smoother future operation.
jira-refinement
This skill should be used for Jira backlog refinement via text conversation. It pulls non-ready tickets, facilitates requirements discussion, and marks tickets ready when complete.
test-case-generator
从需求文档（文字、图片、PDF、DOCX）生成结构化的功能测试用例。遵循 15 字段规范，输出 Excel 文件，支持正向/异常场景、边界值、安全性测试。
bazel-evidence-engineering
Use when Bazel controls—or is being evaluated for—the relevant build, test, architecture, CI, artifact, or release surface. Choose the smallest sufficient Bazel evidence across graph, configuration, actions, execution, performance, and provenance. Skip non-Bazel build systems, runtime-only incidents, and prose tasks without a formal Bazel question.
picnic
Add groceries to Picnic shopping cart via voice/text commands.
prompt-engineering
Prompt engineering reference and workflow for creating, refining, and reviewing high-quality prompts for AI tools, agents, and skills.
write-skill
Create Claude Code skills with proper structure and documentation. Use when building custom skills, writing SKILL.md files, or when user asks "write a skill" or "create Claude skill".
add-module
Create new demo or utility modules following CLY project patterns. Use when adding TUI demonstration modules to modules/demo/ or utility modules to modules/, following Bubbletea/Bubbles conventions with proper Cobra CLI integration.
agent-tests
Agent-runnable e2e tests that validate workflows with real commands
cobra-modularity
Build modular CLI applications with Cobra framework. Use when structuring CLI commands, implementing modular command architecture, handling flags and arguments, or when user mentions Cobra, CLI modularity, command registration, or spf13/cobra.
cli-config
Manage CLI application configuration with Cobra and Viper. Use when implementing config files, environment variables, flags binding, or when user mentions Viper, configuration management, config files, or CLI settings.
skill-creation
Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations.
python
Python development with uv and PEP 723 inline dependencies
python-script
Creates standalone Python scripts using uv with PEP 723 inline script metadata.
postmortem
Error review and recovery workflow. This skill should be used when the user points out a mistake, requests a review, pastes error logs, or asks "what went wrong". Triggers on phrases like "this is wrong", "you made a mistake", "do a postmortem", "can you review this", or when stack traces/CLI errors are provided.
git-worktrees
Manage git worktrees for parallel development. Use when user mentions worktrees, parallel branches, or working on multiple branches simultaneously.
drafts
Organize user's ideas into clear, simple drafts
charm-stack
Build terminal UIs with Bubbletea, Bubbles, Lipgloss, and Huh. Use when creating TUI applications, interactive forms, styled terminal output, or when user mentions Bubbletea, Bubbles, Lipgloss, Huh, Charm, or TUI development.
ag:claudemd-update
Updates CLAUDE.md based on recent conversation history. This skill should be used when the user asks to update their CLAUDE.md, sync learnings from conversations, or review what was discussed recently.
ag:checkpoint
Session checkpoint — saves context, outputs summary + changelog. Three-in-one wrap-up command.
ag:changelog
Generates and updates project CHANGELOG.md from git commits, conversation decisions, and architectural changes. Auto-invoke this skill when new features are added, features are removed, or architecture changes occur.
agents-session
Save and resume AI agent sessions via cly. Use when starting, checkpointing, or ending a coding agent session, or when the user mentions saving the current session, naming it, or resuming prior work. Drives `cly agent-session save` (alias `cly as save`) with best-effort id, name, and description derived from conversation context.
ag:backlog-backtrack
Generate BACKLOG.md from Claude Code conversation history. Summarizes recent sessions grouped by project and date. Idempotent — safe to re-run.
testing
Write tests using TDD principles with integration tests as default and minimal mocking. Use when writing code, fixing bugs, or when user mentions tests, TDD, unit tests, integration tests, or testing strategy.
go-specialist
Go language consultant providing guidance on best practices, testing with testify, concurrency patterns, error handling, and technology stack recommendations. Use when answering Go questions, reviewing Go code, or advising on Go implementation approaches.
vectorcode
Semantic code search using RAG and vector embeddings. Use when you need to find code by concept/functionality rather than exact text match, discover implementation examples, or understand where specific concepts are used across projects.
slack-message-formatter
This skill should be used when the user asks to parse, format, organize, or work with a message. It asks if the message is for Slack and formats using Slack's minimal markdown with natural conversational flow.
find-skills
Helps users discover and install agent skills when they ask questions like "how do I do X", "find a skill for X", "is there a skill that can...", or express interest in extending capabilities. This skill should be used when the user is looking for functionality that might exist as an installable skill.
openspec-explore
Enter explore mode - a thinking partner for exploring ideas, investigating problems, and clarifying requirements. Use when the user wants to think through something before or during a change.
openspec-archive-change
Archive a completed change in the experimental workflow. Use when the user wants to finalize and archive a change after implementation is complete.
github-cleanup
Orchestrates progressive GitHub account cleanup using a 6-phase audit→approve→execute process that prevents accidental deletion. BEFORE any destructive repo action, invoke FIRST — traces Dependabot alerts to unused direct deps (prune) vs transitive-only (upgrade lock file). Triggers on 'clean up GitHub', 'audit my repos', 'Dependabot trouble', 'unused deps', 'stale forks', 'dependency audit'. Requires gh CLI. (user)
openspec-apply-change
Implement tasks from an OpenSpec change. Use when the user wants to start implementing, continue implementation, or work through tasks.
open-source-best-practices
Complete framework for preparing GitHub projects for sustainable open source release. Covers security scanning with Git History Cleaner, legal foundations, governance, contributor onboarding, maintainer expectations, and GitHub Sponsors setup. Use when launching a project publicly, preparing a private repo for open source, or hardening an existing public repo for long-term maintenance.
openspec-propose
Propose a new change with all artifacts generated in one step. Use when the user wants to quickly describe what they want to build and get a complete proposal with design, specs, and tasks ready for implementation.
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