GitHub
defense-in-depth
Use when invalid data causes failures deep in execution - validates at every layer data passes through to make bugs structurally impossible
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Data & AI AI Skills
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GitHub
progress-manager
Manages course progress tracking in ~/.claude-course/progress.json. Use when: loading, saving, or displaying course progress. Internal skill - used by /ccc:course commands.
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GitHub
data-quality
Data quality testing with dbt tests, Great Expectations, and monitoring.
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GitHub
testing-python
Python testing best practices with pytest. Covers unit, integration, async tests, mocking, fixtures. Triggers: "напиши тесты", "write tests", "add tests", "test coverage", "pytest"
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GitHub
craft-coder-help
Help and documentation for Craft-Coder plugin. Use when: user asks about available skills, commands, or how to use this plugin. Triggers: "help", "what can you do", "craft help", "как пользоваться".
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GitHub
testing-anti-patterns
Use when writing or changing tests, adding mocks, or tempted to add test-only methods to production code - prevents testing mock behavior and production pollution
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GitHub
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 to...
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GitHub
subagent-creator
Guide for creating effective subagents (custom agents). Use when users want to create a new subagent that can be dispatched via Task tool for autonomous work. Covers frontmatter fields (name, description, tools...
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GitHub
db-designer
Generate database schema from feature descriptions. User doesn't see SQL. Use when: features require data persistence. Triggers: internal use only.
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GitHub
api-generator
Generate CRUD API endpoints automatically. User doesn't see routes. Use when: features need backend logic. Triggers: internal use only.
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GitHub
browser-extension
Build browser extensions with Manifest V3, content scripts, and service workers. Use when: creating Chrome extension, Firefox addon, browser plugin. Triggers: "extension", "browser extension", "chrome extension...
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GitHub
verification-gate
Hidden quality gate that runs before showing "Done!" to user - ensures all tests pass, build succeeds, and requirements met before claiming completion
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GitHub
verification-before-completion
Use when about to claim work is complete or fixed - requires running verification commands and confirming output before making any success claims
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GitHub
backend-python
Modern Python backend stack: FastAPI, SQLAlchemy 2.0, Pydantic v2, uv, ruff. Use when: building Python APIs, async services, or working with Python backend code. Triggers: "fastapi", "python backend", "sqlalche...
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GitHub
test-driven-development
Write failing test first, then minimal code to pass. Red-Green-Refactor cycle. Use when: implementing features, fixing bugs, refactoring code. Triggers: "implement", "add feature", "fix bug", "tdd", "test first...
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GitHub
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior - four-phase framework (root cause investigation, pattern analysis, hypothesis testing, implementation) that ensures understanding before atte...
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GitHub
terraform-expert
Infrastructure as Code with Terraform - modules, state management, and best practices.
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GitHub
warehouse-optimization
Query optimization, partitioning, clustering, and warehouse tuning.
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GitHub
cli-tool
Build command-line tools with argument parsing, subcommands, and nice UX. Use when: creating CLI, terminal app, command-line utility. Triggers: "cli", "command line", "terminal", "clap", "typer", "commander".
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GitHub
security-hardening
Infrastructure security, CIS benchmarks, and vulnerability scanning.
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GitHub
auto-testing
Automatically generate and run tests after each code change. Use when: any code is generated or modified in the pipeline. Triggers: internal use only.
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GitHub
backend-nodejs
Modern Node.js backend stack: NestJS/Hono, Drizzle ORM, Vitest, TypeScript. Use when: building Node.js APIs, TypeScript backends, or serverless functions. Triggers: "nestjs", "node backend", "express", "hono",...
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GitHub
design-preferences
Gather user design preferences before building UI. Use when: starting a project with visual interface (Web App, Mobile, Browser Extension). Triggers: "design preferences", "visual style", "choose theme", "desig...
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GitHub
testing-basics
Essential testing patterns for any project. Use when: writing tests, setting up testing, or fixing test issues. Triggers: "test", "testing", "unit test", "write tests".
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