README

Production-ready Claude Code skills, agents, and project templates for Craft CMS 5 development.

Built and maintained by michtio. Covers both plugin/module development (extending Craft) and site development (content modeling, Twig templates, front-end architecture).

Support

If this project saves you time, consider supporting its development:

• GitHub Sponsors
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Quick Start

1. Install

# Claude Code Plugin (recommended)
# First time: add the marketplace, then install
/plugin marketplace add michtio/craftcms-claude-skills
/plugin install craftcms-claude-skills@michtio/craftcms-claude-skills

# Or via Vercel Skills CLI
npx skills add michtio/craftcms-claude-skills --all

# Or clone manually
git clone https://github.com/michtio/craftcms-claude-skills.git ~/.claude/craftcms-claude-skills
cd ~/.claude/craftcms-claude-skills && bash install.sh

2. Set Up Your Project

Open Claude Code in your Craft project and say:

Set up Claude for this Craft project

The craft-project-setup skill detects your project type (plugin, site, module, hybrid, or monorepo) and generates a tailored CLAUDE.md and .claude/rules/ directory.

3. Start Building

The skills trigger automatically based on what you're doing. Just describe what you need:

Build a blog with topics, authors, and a flexible body builder using CKEditor

Claude loads the right skills, follows Craft conventions, and uses the correct field handles, DDEV commands, and project config workflow.

Example Prompts

Just describe what you need — skills trigger automatically and produce high-quality results. A few to show the range, grouped by domain:

Content modeling & architecture

Plan the content architecture for a multi-language corporate site with
news, team members, office locations, and a service catalog. We need
English, German, and French with subfolder-per-language routing.

Plugins & modules

Build a custom element type for "Job Listings" with postDate/expiryDate
status, a categories relation for departments, and a CP edit page with
field layout designer.

Control panel & author experience

I need a modal dialog for my Craft plugin that opens when clicking
"Add Item", shows a form with name and handle fields, POSTs to my
plugin's save action, and closes on success. Make it keyboard accessible.

Front-end & Twig

Create an atomic button component that supports links, form submits,
and disabled states. It needs size variants and a loading spinner option.

Build a member area with registration, login, password reset, and
profile editing. Users should be in the "Members" group and only see
content in the gated section.

Hosting & deployment

Set this project up to deploy on Servd: Servd asset storage, static
caching with Blitz in reverse-proxy mode, and the dedicated queue
runner. Document the constraints in CLAUDE.md.

Configure Redis for cache, sessions, and mutex in our Craft project.
We're running DDEV locally and deploying to a VPS with Redis installed.

See docs/prompt-guide.md for 40+ prompts organized by task type — content modeling, plugin development, field types, security, Twig, CP/JS, configuration & deployment, testing, and headless.

What's Inside

Skills

11 skills, 105 reference files. Skills load automatically and declare companion skills so related knowledge loads together. See docs/skills-overview.md for the full breakdown.

Agents

Agents build feature by feature (vertical slices), not layer by layer. Tests are written alongside each layer, not batched at the end. Manual testing gates (required + optional) are identified per feature. The builder's prevention rules map directly to the reviewer's checklist across PHP, Twig, JS, and CSS; craft-code-reviewer-deep (Opus) goes further for high-stakes changes. See docs/agents.md for details.

Plugin Reference Library

23 Craft plugins with detailed configuration, Twig/PHP API, and common pitfalls — indexed and name-routed by the craft-plugins skill, so they surface from front-end, PHP, migration, and deployment tasks alike:

Documentation

Requirements

• Claude Code installed and configured
• DDEV for local Craft CMS development
• Craft CMS 5.x
• Bash (macOS/Linux) for the install script

Versioning

This package follows its own semantic versioning, driven by the pack's own content — it is not pinned to Craft's minor releases:

• Patch (e.g. 1.6.0 → 1.6.1) — accuracy fixes, corrections, small content updates
• Minor (e.g. 1.5.x → 1.6.0) — new skills, new plugin references, significant content additions
• Major (1.x → 2.x) — Craft's next major (5.x → 6.x, where APIs break) or a major reorganization of the pack

The pack targets Craft CMS 5, latest minor (currently 5.10). Behaviour specific to a Craft minor is annotated inline in the content (e.g. "since 5.10.0"), so a single line serves projects on any Craft 5 minor — the minors are additive and backward-compatible. New content like a hosting skill or plugin reference is a feature of the pack, independent of which Craft minor is current.

Development happens on main. The 1.4.x branch is a frozen snapshot targeting Craft 5.9 — it received a final quality release and no longer takes new work; all new development lands on main. The release-validation workflow enforces that manifest versions match the release tag.

Roadmap

• Upgrade guide (Craft 3→4, 4→5, 3→5) with deprecated plugin mapping and migration paths
• DDEV skill expansion (Xdebug deep-dive, custom services, production parity)
• Commerce skill (products, variants, orders, carts, payments -- separate skill)
• CKEditor 4→5 migration guide (config conversion, custom styles, plugin mapping, HTML cleanup)
• More plugin references (Neo, Scout, Campaign)

Contributing

Contributions welcome. See docs/contributing.md for how to add plugin references, improve skills, and report issues.

For PHP consumers (composer)

The same repo also ships as a small composer package, exposing the bundled skills' markdown to PHP code through a thin static helper. The primary consumer is craftpulse/craft-cortex — a Craft CMS 5 MCP server plugin that surfaces these skills as MCP prompts and resources to AI agents.

composer require michtio/craftcms-claude-skills

use Michtio\CraftCmsClaudeSkills\Skills;

Skills::skillNames();
// ['craft-content-modeling', 'craft-garnish', 'craft-php-guidelines', ...]

Skills::content('craftcms');
// Full SKILL.md content as a string

Skills::references('craftcms');
// ['architecture', 'caching', 'conditions', ...]

Skills::referenceContent('craftcms', 'elements');
// Full reference markdown as a string

Skills::agentNames();
// ['craft-code-reviewer', 'craft-debugger', 'craft-feature-builder', ...]

Skills::agentContent('craft-debugger');
// Full agent markdown (frontmatter + body) as a string

The helper is read-only and does no caching — wrap it in your own registry if you need that. PHP 8.2+.

Acknowledgements

Thanks to the people whose contributions and work have improved this pack:

• William Bocchinelli (@willbocc) — element-index sources guidance for content modeling (PR #7).
• John Henry (@john-henry) — the Craft CP UI & Brand style guide that prompted the v1.9.0 control-panel UI reconciliation pass.

License

MIT -- see LICENSE.