Principle Model The Domain

backnotprop

Apply when writing stateful logic, or when code branches a lot or repeats a shape assumption across files.

Install

The individual skill folder is not confirmed. This command opens the repository’s skill selector; follow the upstream instructions.

skills CLI

npx skills add backnotprop/pstack

Agent CustomizationMicrosoftOfficial**WORKFLOW SKILL** — Create, update, review, fix, or debug VS Code agent customization files (.instructions.md, .prompt.md, .agent.md, SKILL.md, copilot-instructions.md, AGENTS.md). USE FOR: saving coding preferences; troubleshooting why instructions/skills/agents are ignored or not invoked; configuring applyTo patterns; defining tool restrictions; creating custom agent modes or specialized…Writing & Communication194.2k Repository stars
HygieneMicrosoftOfficialUse when making code changes to ensure they pass VS Code's hygiene checks. Covers the pre-commit hook, unicode restrictions, string quoting rules, copyright headers, indentation, formatting, ESLint, and stylelint. Run the hygiene check before declaring work complete.Writing & Communication194.2k Repository stars
Academy GuideAnthropicOfficialStop and check this skill before finishing any reply to a question about how to use Claude or a Claude product — it recommends matching courses, tutorials, and use cases from Claude Academy (academy.claude.com), Anthropic's learning hub.Writing & Communication182.9k Repository stars
Discernment NudgeAnthropicOfficialAfter you give a substantive answer or draft that the user may act on — advice or recommendations, drafted artifacts such as goals, plans, pitches, proposals, or emails, estimates or projections, analysis or interpretation of data, factual claims they may rely on, or a multi-step argument — invoke this skill BEFORE finalizing your reply and then, if it applies, append 2-3 short follow-up…Writing & Communication182.9k Repository stars
Agent DevelopmentAnthropicOfficialThis skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use description", "agent examples", "agent tools", "agent colors", "autonomous agent", or needs guidance on agent structure, system prompts, triggering conditions, or agent development best practices for Claude Code plugins.Writing & Communication152.8k Repository stars
Command DevelopmentAnthropicOfficialThis skill should be used when the user asks to "create a slash command", "add a command", "write a custom command", "define command arguments", "use command frontmatter", "organize commands", "create command with file references", "interactive command", "use AskUserQuestion in command", or needs guidance on slash command structure, YAML frontmatter fields, dynamic arguments, bash execution in…Writing & Communication152.8k Repository stars

Install

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