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Everything Claude Code

Free

Standardize your JavaScript development practices.

by affaan-m239.3k stars on affaan-m/ecc
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Updated Aug 10, 2026
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Free · Opens the source repo

What Everything Claude Code does

Everything Claude Code is a skill designed to help developers adhere to established conventions and patterns within the everything-claude-code repository. This skill provides a structured approach to managing JavaScript projects by enforcing a hybrid module organization and promoting best practices in commit message formatting, code style, and testing. By following the guidelines outlined in this skill, developers can maintain consistency and clarity in their codebase, making collaboration more efficient.

The skill focuses on several key areas, including commit conventions, project structure, and error handling. It emphasizes the use of conventional commits, which helps in tracking changes and understanding the history of the project. The skill outlines specific prefixes for commit messages, such as fix, feat, and docs, ensuring that all contributions are documented in a clear and standardized manner. This is particularly beneficial for teams working on large projects where clarity in version control is essential.

In addition to commit conventions, Everything Claude Code provides guidelines on code style, including naming conventions for files, functions, and classes. It also specifies the preferred import and export styles, which helps in maintaining a clean and organized code structure. The skill encourages developers to write unit and integration tests following the existing patterns, thereby ensuring that new features do not introduce regressions into the codebase.

Overall, this skill is ideal for developers working on the everything-claude-code repository or similar JavaScript projects who want to ensure that their contributions align with established conventions. By using this skill, teams can enhance their development workflow, improve code quality, and facilitate better collaboration among team members.

When to use it

Use this skill when making changes to the everything-claude-code repository, adding features, or writing tests that align with project conventions.

When not to use it

This skill may not be suitable for projects outside of the everything-claude-code repository or for teams that do not follow similar conventions.

What you can build with it

Adding a New Feature

When implementing a new feature, use this skill to ensure your code follows the established patterns and commit message conventions.

Writing Tests

Utilize the skill's guidelines to write unit and integration tests that align with the project's testing standards.

Creating Documentation

When documenting your contributions, refer to the commit message guidelines to maintain clarity and consistency.

How to install Everything Claude Code

View source

1. Install with the skills CLI

npx skills add affaan-m/ecc/everything-claude-code --agent claude-code

2. Or install it manually

Download the skill folder and drop it into ~/.claude/skills/ for all projects, or .claude/skills/ to scope it to one repo. Restart Claude Code so it picks up the new skill.

Anthropic's agentic coding CLI, and the reference implementation of Agent Skills. Drop a skill folder into ~/.claude/skills and Claude Code loads it automatically whenever a task matches the skill's description. Claude Code docs

Inside SKILL.md

Written by affaan-m

Everything Claude Code Conventions

Generated from affaan-m/everything-claude-code on 2026-03-20

Overview

This skill teaches Claude the development patterns and conventions used in everything-claude-code.

Tech Stack

  • Primary Language: JavaScript
  • Architecture: hybrid module organization
  • Test Location: separate

When to Use This Skill

Activate this skill when:

  • Making changes to this repository
  • Adding new features following established patterns
  • Writing tests that match project conventions
  • Creating commits with proper message format

Commit Conventions

Follow these commit message conventions based on 500 analyzed commits.

Commit Style: Conventional Commits

Prefixes Used

  • fix
  • test
  • feat
  • docs

Message Guidelines

  • Average message length: ~65 characters
  • Keep first line concise and descriptive
  • Use imperative mood ("Add feature" not "Added feature")

Commit message example

feat(rules): add C# language support

Commit message example

chore(deps-dev): bump flatted (#675)

Commit message example

fix: auto-detect ECC root from plugin cache when CLAUDE_PLUGIN_ROOT is unset (#547) (#691)

Commit message example

docs: add Antigravity setup and usage guide (#552)

Commit message example

merge: PR #529 — feat(skills): add documentation-lookup, bun-runtime, nextjs-turbopack; feat(agents): add rust-reviewer

Commit message example

Revert "Add Kiro IDE support (.kiro/) (#548)"

Commit message example

Add Kiro IDE support (.kiro/) (#548)

Commit message example

feat: add block-no-verify hook for Claude Code and Cursor (#649)

Architecture

Project Structure: Single Package

This project uses hybrid module organization.

Configuration Files

  • .github/workflows/ci.yml
  • .github/workflows/maintenance.yml
  • .github/workflows/monthly-metrics.yml
  • .github/workflows/release.yml
  • .github/workflows/reusable-release.yml
  • .github/workflows/reusable-test.yml
  • .github/workflows/reusable-validate.yml
  • .opencode/package.json
  • .opencode/tsconfig.json
  • .prettierrc
  • eslint.config.js
  • package.json

Guidelines

  • This project uses a hybrid organization
  • Follow existing patterns when adding new code

Code Style

Language: JavaScript

Naming Conventions

ElementConvention
FilescamelCase
FunctionscamelCase
ClassesPascalCase
ConstantsSCREAMING_SNAKE_CASE

Import Style: Relative Imports

Export Style: Mixed Style

Preferred import style

// Use relative imports
import { Button } from '../components/Button'
import { useAuth } from './hooks/useAuth'

Testing

Test Framework

No specific test framework detected — use the repository's existing test patterns.

File Pattern: *.test.js

Test Types

  • Unit tests: Test individual functions and components in isolation
  • Integration tests: Test interactions between multiple components/services

Coverage

This project has coverage reporting configured. Aim for 80%+ coverage.

Error Handling

Error Handling Style: Try-Catch Blocks

Standard error handling pattern

try {
  const result = await riskyOperation()
  return result
} catch (error) {
  console.error('Operation failed:', error)
  throw new Error('User-friendly message')
}

Common Workflows

These workflows were detected from analyzing commit patterns.

Database Migration

Database schema changes with migration files

Frequency: ~2 times per month

Steps:

  1. Create migration file
  2. Update schema definitions
  3. Generate/update types

Files typically involved:

  • **/schema.*
  • migrations/*

Example commit sequence:

feat: implement --with/--without selective install flags (#679)
fix: sync catalog counts with filesystem (27 agents, 113 skills, 58 commands) (#693)
feat(rules): add Rust language rules (rebased #660) (#686)

Feature Development

Standard feature implementation workflow

Frequency: ~22 times per month

Steps:

  1. Add feature implementation
  2. Add tests for feature
  3. Update documentation

Files typically involved:

  • manifests/*
  • schemas/*
  • **/*.test.*
  • **/api/**

Example commit sequence:

feat(skills): add documentation-lookup, bun-runtime, nextjs-turbopack; feat(agents): add rust-reviewer
docs(skills): align documentation-lookup with CONTRIBUTING template; add cross-harness (Codex/Cursor) skill copies
fix: address PR review — skill template (When to use, How it works, Examples), bun.lock, next build note, rust-reviewer CI note, doc-lookup privacy/uncertainty

Add Language Rules

Adds a new programming language to the rules system, including coding style, hooks, patterns, security, and testing guidelines.

Frequency: ~2 times per month

Steps:

  1. Create a new directory under rules/{language}/
  2. Add coding-style.md, hooks.md, patterns.md, security.md, and testing.md files with language-specific content
  3. Optionally reference or link to related skills

Files typically involved:

  • rules/*/coding-style.md
  • rules/*/hooks.md
  • rules/*/patterns.md
  • rules/*/security.md
  • rules/*/testing.md

Example commit sequence:

Create a new directory under rules/{language}/
Add coding-style.md, hooks.md, patterns.md, security.md, and testing.md files with language-specific content
Optionally reference or link to related skills

Add New Skill

Adds a new skill to the system, documenting its workflow, triggers, and usage, often with supporting scripts.

Frequency: ~4 times per month

Steps:

  1. Create a new directory under skills/{skill-name}/
  2. Add SKILL.md with documentation (When to Use, How It Works, Examples, etc.)
  3. Optionally add scripts or supporting files under skills/{skill-name}/scripts/
  4. Address review feedback and iterate on documentation

Files typically involved:

  • skills/*/SKILL.md
  • skills/*/scripts/*.sh
  • skills/*/scripts/*.js

Example commit sequence:

Create a new directory under skills/{skill-name}/
Add SKILL.md with documentation (When to Use, How It Works, Examples, etc.)
Optionally add scripts or supporting files under skills/{skill-name}/scripts/
Address review feedback and iterate on documentation

Add New Agent

Adds a new agent to the system for code review, build resolution, or other automated tasks.

Frequency: ~2 times per month

Steps:

  1. Create a new agent markdown file under agents/{agent-name}.md
  2. Register the agent in AGENTS.md
  3. Optionally update README.md and docs/COMMAND-AGENT-MAP.md

Files typically involved:

  • agents/*.md
  • AGENTS.md
  • README.md
  • docs/COMMAND-AGENT-MAP.md

Example commit sequence:

Create a new agent markdown file under agents/{agent-name}.md
Register the agent in AGENTS.md
Optionally update README.md and docs/COMMAND-AGENT-MAP.md

Add New Workflow Surface

Adds or updates a workflow entrypoint. Default to skills-first; only add a command shim when legacy slash compatibility is still required.

Frequency: ~1 times per month

Steps:

  1. Create or update the canonical workflow under skills/{skill-name}/SKILL.md
  2. Only if needed, add or update commands/{command-name}.md as a compatibility shim

Files typically involved:

  • skills/*/SKILL.md
  • commands/*.md (only when a legacy shim is intentionally retained)

Example commit sequence:

Create or update the canonical skill under skills/{skill-name}/SKILL.md
Only if needed, add or update commands/{command-name}.md as a compatibility shim

Sync Catalog Counts

Synchronizes the documented counts of agents, skills, and commands in AGENTS.md and README.md with the actual repository state.

Frequency: ~3 times per month

Steps:

  1. Update agent, skill, and command counts in AGENTS.md
  2. Update the same counts in README.md (quick-start, comparison table, etc.)
  3. Optionally update other documentation files

Files typically involved:

  • AGENTS.md
  • README.md

Example commit sequence:

Update agent, skill, and command counts in AGENTS.md
Update the same counts in README.md (quick-start, comparison table, etc.)
Optionally update other documentation files

Add Cross Harness Skill Copies

Adds skill copies for different agent harnesses (e.g., Codex, Cursor, Antigravity) to ensure compatibility across platforms.

Frequency: ~2 times per month

Steps:

  1. Copy or adapt SKILL.md to .agents/skills/{skill}/SKILL.md and/or .cursor/skills/{skill}/SKILL.md
  2. Optionally add harness-specific openai.yaml or config files
  3. Address review feedback to align with CONTRIBUTING template

Files typically involved:

  • .agents/skills/*/SKILL.md
  • .cursor/skills/*/SKILL.md
  • .agents/skills/*/agents/openai.yaml

Example commit sequence:

Copy or adapt SKILL.md to .agents/skills/{skill}/SKILL.md and/or .cursor/skills/{skill}/SKILL.md
Optionally add harness-specific openai.yaml or config files
Address review feedback to align with CONTRIBUTING template

Add Or Update Hook

Adds or updates git or bash hooks to enforce workflow, quality, or security policies.

Frequency: ~1 times per month

Steps:

  1. Add or update hook scripts in hooks/ or scripts/hooks/
  2. Register the hook in hooks/hooks.json or similar config
  3. Optionally add or update tests in tests/hooks/

Files typically involved:

  • hooks/*.hook
  • hooks/hooks.json
  • scripts/hooks/*.js
  • tests/hooks/*.test.js
  • .cursor/hooks.json

Example commit sequence:

Add or update hook scripts in hooks/ or scripts/hooks/
Register the hook in hooks/hooks.json or similar config
Optionally add or update tests in tests/hooks/

Address Review Feedback

Addresses code review feedback by updating documentation, scripts, or configuration for clarity, correctness, or convention alignment.

Frequency: ~4 times per month

Steps:

  1. Edit SKILL.md, agent, or command files to address reviewer comments
  2. Update examples, headings, or configuration as requested
  3. Iterate until all review feedback is resolved

Files typically involved:

  • skills/*/SKILL.md
  • agents/*.md
  • commands/*.md
  • .agents/skills/*/SKILL.md
  • .cursor/skills/*/SKILL.md

Example commit sequence:

Edit SKILL.md, agent, or command files to address reviewer comments
Update examples, headings, or configuration as requested
Iterate until all review feedback is resolved

Best Practices

Based on analysis of the codebase, follow these practices:

Do

  • Use conventional commit format (feat:, fix:, etc.)
  • Follow *.test.js naming pattern
  • Use camelCase for file names
  • Prefer mixed exports

Don't

  • Don't write vague commit messages
  • Don't skip tests for new features
  • Don't deviate from established patterns without discussion

This skill was auto-generated by ECC Tools. Review and customize as needed for your team.

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