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Developer reference

The public extension points of Aimogen Pro - PHP API, REST API, WP-CLI, hooks, webhooks, data model and capabilities.

Aimogen Pro exposes several public interfaces. This section documents what is safe to build on.

PHP APIThe aimogen() helper for calling AI from PHP. REST APIFive endpoints for text, images, embeddings, models and assistants. Filter reference107 filters, with parameters and purpose. Action reference39 actions, with parameters and when they fire. Custom AI toolsRegistering your own functions for the AI to call. WP-CLIFive commands for content creation, editing and running rules. Abilities APIThe WordPress 6.9 ability Aimogen Pro registers. WebhooksInbound triggers and outbound notifications. Data modelOptions, tables, post types and taxonomies. Cron eventsEvery scheduled event and interval. CapabilitiesThe capability model and how to manage access.

Stable versus internal#

Naming#

Technical identifiers use the aiomatic prefix, retained deliberately across the rename. Identifiers added after the rename use aimogen. Where both exist for the same purpose — the API key filters — the aiomatic one runs after the aimogen one, so a legacy filter still has the final word:

php
$token = apply_filters( 'aimogen_openai_api_key',  $token );
$token = apply_filters( 'aiomatic_openai_api_key', $token );

See Legacy Aiomatic identifiers.

Where to put your code#

A site-specific plugin or a child theme functions.php are both fine. For small pieces, the AI Snippets Engine provides a managed alternative with validation and fatal-error protection.

Checking availability#

php
if ( function_exists( 'aimogen' ) ) {
    // The PHP API is available.
}

if ( defined( 'AIMOGEN_IS_PRO' ) ) {
    // Aimogen Pro is active.
}

if ( defined( 'AIMOGEN_MAJOR_VERSION' ) ) {
    // Version string, "2.8.8" at the time of writing.
}

Still stuck? Open a support ticket and include the diagnostics from Aimogen Pro › System & Logs › System Info.