Technical debt in AI development is getting out of hand in the WordPress ecosystem. Developers and business owners are using LLMs to “vibe code” whole features straight into functions.php. The demo works, so the feature ships, and then the first PHP update or API change knocks the whole thing over.
AI writes decent code. What it lacks is the 14 years of architectural context your site carries. When you chase speed without standards you are borrowing against the codebase at a high interest rate, and the repayment usually arrives as a broken checkout or a crashed server.
The “God function” smell in AI code
The clearest sign of technical debt in AI development is the God function. Ask an assistant to add a custom field to the WooCommerce checkout and push the data to a third-party CRM, and you get back one 150-line block that handles the UI, the validation, the sanitization, the API request and the error logging in the same place.
That breaks the Single Responsibility Principle, and it means a change on the CRM side can hang your entire checkout, because nothing is decoupled. I have seen a single failed API transient cause a race condition that locked up the database, all because the generated code never considered what happens when a remote call fails.
The naive AI approach
Vibe coding usually produces something like this, full of hard-coded values with no way to extend it.
<?php
// The "God Function" generated by AI
add_action( 'woocommerce_checkout_update_order_meta', function( $order_id ) {
if ( ! empty( $_POST['custom_crm_field'] ) ) {
update_post_meta( $order_id, 'crm_data', sanitize_text_field( $_POST['custom_crm_field'] ) );
// Hard-coded API logic inside a hook - BAD!
$response = wp_remote_post( 'https://api.some-crm.com/v1/lead', [
'body' => json_encode(['email' => $_POST['billing_email'], 'field' => $_POST['custom_crm_field']]),
'headers' => ['Authorization' => 'Bearer 123456789'] // Hard-coded secret!
]);
if ( is_wp_error( $response ) ) {
error_log( 'CRM Failed' );
}
}
});Refactoring technical debt in AI development
The fix is to decouple the logic. Use classes, use filters, and please keep your keys in the WordPress Options API or in environment variables. That is what lets a system change later without breaking.
<?php
/**
* A modular approach to handle CRM integrations.
* This separates UI, Storage, and External Communication.
*/
class Bbioon_CRM_Integration {
public function __construct() {
add_action( 'woocommerce_checkout_update_order_meta', [ $this, 'store_custom_field' ] );
add_action( 'bbioon_after_order_processed', [ $this, 'sync_to_crm' ], 10, 2 );
}
public function store_custom_field( $order_id ) {
$value = filter_input( INPUT_POST, 'custom_crm_field', FILTER_SANITIZE_STRING );
if ( $value ) {
update_post_meta( $order_id, '_bbioon_crm_value', $value );
// Trigger a custom hook to handle the sync asynchronously if possible
do_action( 'bbioon_after_order_processed', $order_id, $value );
}
}
public function sync_to_crm( $order_id, $value ) {
$api_key = get_option( 'bbioon_crm_api_key' ); // Not hard-coded
// Logic for API wrapper goes here...
}
}
new Bbioon_CRM_Integration();Guardrails that catch it early
If you are going to use AI, and most of us are, you need automated guardrails. Your memory will not catch every hallucination. I run PHP_CodeSniffer with WordPress Coding Standards (WPCS) so the sloppy patterns get flagged before they reach production.
As I wrote in the post on AI documentation and technical debt, the missing human-readable context is often what kills a project. If the AI wrote the code and nobody on the team can explain why it works, you are renting that codebase from an algorithm rather than owning it.
Stability beats speed
Speed is addictive, but with technical debt in AI development fast usually turns into fragile. Do not let a coding assistant talk you out of unit tests or out of reading the WordPress Plugin Handbook. A God script that saves an hour today can cost you a weekend of firefighting next month.
If technical debt in AI development is eating your dev hours, I can take it on. I have been wrestling with WordPress since the 4.x days.
Let’s clean up the mess
Maybe you inherited a vibe coded mess, or maybe you have a prototype that has hit its limits. Either way it needs senior engineering judgment to get past the demo phase and into something that holds up. Ship it, but ship it right.
