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Demeter Skills

demeter-skills

Central skill registry for demeter project. Use to discover available skills, understand skill conventions, and find the right skill for a task.

SKILL.md

Full skill instructions

Demeter Skills

This directory contains skills that Claude auto-activates based on task context.

Available Skills

SkillFilePurpose
Architecturearchitecture.mdProject structure and design patterns

Skill Conventions

File Format

Each skill file uses YAML frontmatter:

---
name: skill-name
description: What this skill does. When to use it.
allowed-tools: Tool1, Tool2  # Optional
---

# Skill Content

Naming

  • Use lowercase with hyphens: my-skill-name
  • Max 64 characters
  • Be specific: rust-error-handling not errors

Description Guidelines

The description field drives auto-activation. Include:

  1. What the skill does
  2. When Claude should use it
  3. Trigger keywords users would mention
# Good
description: Debug Rust compile errors and borrow checker issues. Use when encountering lifetime errors, ownership problems, or type mismatches.

# Bad
description: Helps with Rust

Adding New Skills

  1. Create skill-name.md in this directory
  2. Add YAML frontmatter with name and description
  3. Write skill content in markdown
  4. Update the table in this file

Skill Discovery

Claude automatically discovers skills based on:

  • Task relevance
  • Description keywords
  • Request context

No explicit invocation needed—write good descriptions and Claude will find them.

More Other skills

Delegate independent tasks to specialized agents working concurrently with isolated context.

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Applies Anthropic's official brand colors and typography to any sort of artifact that may benefit from having Anthropic's look-and-feel. Use it when brand colors or style guidelines, visual formatting, or company design standards apply.

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Toolkit for styling artifacts with a theme. These artifacts can be slides, docs, reportings, HTML landing pages, etc. There are 10 pre-set themes with colors/fonts that you can apply to any artifact that has been creating, or can generate a new theme on-the-fly.

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A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use. Claude should use this skill whenever asked to write some sort of internal communications (status reports, leadership updates, 3P updates, company newsletters, FAQs, incident reports, project updates, etc.).

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Fundamental design principles for writing maintainable, testable Python code.

40.2K 21.9K
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Modern responsive layouts using container queries, fluid typography, CSS Grid, and mobile-first strategies.

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Generate Playwright tests from scenarios using interactive browser exploration and validation.

39.7K 18.2K
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Modern React state management with Redux Toolkit, Zustand, Jotai, and React Query for every state category.

40.2K 14.7K
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GDPR-compliant data handling with consent management, data subject rights, and privacy controls.

40.2K 14.3K
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Python error handling patterns including input validation, exception hierarchies, and partial failure handling. Use when implementing validation logic, designing exception strategies, handling batch processing failures, or building robust APIs.

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Detailed multi-file refactor planning with safety checks and rollback guidance.

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