T3Bootstrap Skills

Agent Skills for working with the T3Bootstrap stack on TYPO3 v14 — the WapplerSystems ecosystem of t3bootstrap/* and wapplersystems/* extensions that delivers a Bootstrap 5 based site template, content elements, and feature packages.

These skills teach an AI coding agent what comes from the stack out of the box and how to extend it minimally so that a customer project stays close to the upstream packages and remains upgrade-friendly.

Companion plugin: wapplersystems/typo3-skills covers generic TYPO3 v14 topics (Fluid patterns, Extbase, Content Blocks, CSP, Playwright, …). The skills here are intentionally T3Bootstrap-specific and reference real t3bootstrap/* package paths.

Repository Layout

.agents/skills/<skill-name>/
├── SKILL.md                 # Skill definition (description + workflow)
└── agents/openai.yaml       # Standardized agent interface

Available Skills

Skill	Purpose
t3bootstrap-site-package	Set up a TYPO3 v14 project on the T3Bootstrap stack: composer.json repositories, the right t3bootstrap/* + wapplersystems/* packages, site sets in config/sites/<site>/config.yaml, when (and when not) to add a local site package, language configuration, route enhancers.
t3bootstrap-overrides	Minimal-invasive customization: Fluid template overrides via templateRootPaths.10 / partialRootPaths.10 / layoutRootPaths.10, SCSS variable overrides with !default, TypoScript constants, when to override what — without forking t3bootstrap/template.
t3bootstrap-content-elements	Catalog of the 23 t3bs_* content elements from t3bootstrap/container-bs5-templates, decision matrix for content migration (static HTML, WordPress, Joomla, older TYPO3, Flux-bs5), and the t3bsContainerBs5MigrateFluxBs5 upgrade wizard.

How Skills Are Invoked

Skills are auto-discovered by Claude Code from the skills: entry in .claude-plugin/plugin.json. Each skill's SKILL.md declares a description that triggers automatic invocation when the user's request matches.

Explicit invocation: mention the skill by name in a prompt (e.g. "use the t3bootstrap-content-elements skill to map this WordPress accordion").

Stack Versions This Plugin Targets

• TYPO3 v14 (Composer mode)
• t3bootstrap/template dev-release/v14
• t3bootstrap/core dev-release/v14
• t3bootstrap/container-bs5-templates dev-release/v14
• Bootstrap 5
• PHP 8.3+ (PHP 8.5 on the reference project)
• DDEV-based local dev

Skills assume TYPO3 v14. If a workflow differs on v13, the skill says so explicitly.

Relation to the T3Bootstrap Page Builder

The reference project (t3bootstrap14) hosts a planned Page Builder inside t3bootstrap/core. The skills here describe the current template-and-content-element workflow. They will be revised as the builder lands and changes which configuration lives where (Site Settings YAML vs. TypoScript constants).

Contributing

PRs welcome at git.wappler.systems:WapplerSystems/t3bootstrap-skills.

Conventions:

• Real package paths. Skills reference real t3bootstrap/* / wapplersystems/* paths rather than abstract placeholders — that is the topic. Customer site packages keep the my-site-package / Vendor\MySitePackage\ placeholders used in typo3-skills.
• English content. Frontmatter description and SKILL.md body in English. German inline labels (e.g. backend field labels) are quoted verbatim from the upstream packages.
• One SKILL.md per topic, deep but scannable. Tables, file paths, code blocks. Avoid prose.

License

MIT.