Hook-Based Extensibility

The platform uses WordPress filters and actions for cross-plugin communication and extensibility.

Filter Patterns

• extrachill_ai_tools – Register AI tools across plugins
• extrachill_breadcrumbs_* – Customize breadcrumb navigation
• newsletter_form_integrations – Register newsletter contexts

Action Hooks

• extrachill_artist_created – Trigger actions when artists are created
• extrachill_user_registered – User lifecycle events
• Theme hooks for UI integration (extrachill_header_*, extrachill_sidebar_*)

Function Existence Checks

Always verify cross-plugin functions exist before calling:

if (function_exists('ec_get_artist_data')) {
    $data = ec_get_artist_data($artist_id);
}

Shared Services

• extrachill-ai-client – Centralized AI provider management
• extrachill-users – Network-wide user management
• extrachill-multisite – Cross-site data access
• extrachill-api – REST API infrastructure