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    WordPress FSE Theme Builder

    by Arnstein Larsen

    Instant high-performance WordPress FSE block themes from brand briefs with WCAG-compliant design systems.

    Updated Jun 2026
    Security scanned

    $12.99

    · or 65 credits

    30-day refund guarantee

    Secure checkout via Stripe

    Included in download

    • Generate a complete, runnable WordPress block theme from a brand description.
    • Audit an existing theme.json for accessibility and token architecture errors.
    • Instant install

    Sample input

    Build a block theme for "Apex Solar," a clean energy startup. Colors are bright lime and charcoal. Use a modern sans-serif. Include a hero section and a three-column benefits grid.

    Sample output

    I've scaffolded the 'apex-solar' theme.

    • theme.json: v3 with Lime (#BEF264) and Charcoal (#1F2937).
    • Accessibility: Lime darkened to #84CC16 for AA text contrast on light backgrounds.
    • Templates: 6 core .html files + 3 PHP patterns.
    • Logic: functions.php handles asset enqueuing only. [Code blocks...]

    About This Skill

    Professional WordPress Theme Architecture

    Transform brand briefs into production-ready WordPress Full Site Editing (FSE) block themes. This skill functions as a senior theme architect, delivering a complete, runnable file structure including theme.json, templates, parts, and localized patterns. Instead of producing generic tutorials, it generates specific, paste-ready code optimized for modern WordPress standards (WP 6.4+).

    What it does

    • Design System Generation: Crafts a theme.json (v3) with WCAG-checked palettes, fluid typography scales, and spacing tokens.
    • Full Template Suite: Builds all core templates (index, single, page, archive, search, 404) and template parts (header, footer).
    • Custom Patterns: Creates brand-specific PHP patterns for heroes, feature grids, and CTAs.
    • Performance & Accessibility: Implements system-font stacks for Core Web Vitals and ensures keyboard focus-visible states.
    • Audit Mode: Reviews existing theme.json files against 25-point professional criteria for token architecture and accessibility.

    Why use this skill?

    Prompting an AI yourself often results in "classic" PHP code or incomplete JSON. This skill enforces strict FSE discipline: zero hardcoded hex values, proper settings-vs-styles split, and separation of presentation from business logic. It ensures your theme is accessible (WCAG 2.1 AA) and performance-optimized out of the box, saving hours of manual boilerplate setup.

    Use Cases

    • Generate a complete, runnable WordPress block theme from a brand description.
    • Audit an existing theme.json for accessibility and token architecture errors.
    • Scaffold WCAG 2.1 AA compliant color palettes and fluid typography scales.
    • Create reusable block patterns for business-specific sections like hero or FAQ.

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    Security Scanned

    Passed automated security review

    Permissions

    Allowed Hosts

    schemas.wp.org
    example.com
    www.gnu.org

    File Scopes

    wordpress-fse-theme-builder/**

    Tags

    wordpress
    fse
    theme-development
    json
    web-design
    accessibility
    block-theme
    themejson
    full-site-edit
    wp-theme
    theme-dev
    design-tokens
    gutenberg
    wp-templates
    block-patterns
    wcag
    theme-builder

    Creator

    Arnstein Larsen

    Frequently Asked Questions

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