DMSI Webhooks exposes the following WordPress filters for programmatic customization.

dmsi_register_webhook_event #

Register additional custom event types.

Parameters: array $events — existing event definitions

Return: Modified events array

add_filter('dmsi_register_webhook_event', function(array $events): array {
$events[] = [
'name'           => 'order.shipped',
'category'       => 'custom',
'description'    => 'Fires when an order is shipped',
'sample_payload' => ['order_id' => 123],
];
return $events;
});

dmsi_webhook_endpoints_{event_name} #

Override the list of endpoints that receive deliveries for a specific event. Replace {event_name} with the event name using underscores instead of dots: dmsi_webhook_endpoints_license_created.

Parameters: ($endpoints, $event_name, $context)

add_filter('dmsi_webhook_endpoints_license_created', function($endpoints, $event, $context) {
// Only deliver to endpoints with auto_subscribe enabled
return array_filter($endpoints, fn($ep) => $ep->auto_subscribe);
}, 10, 3);

dmsi_webhook_should_send #

Skip a specific delivery for a given endpoint/event combination.

Parameters: ($should_send, $endpoint, $event_name, $data, $context)

Return: bool

add_filter('dmsi_webhook_should_send', function($should_send, $endpoint, $event, $data, $context) {
// Skip deliveries to debug-mode endpoints outside admin context
if ($endpoint->debug_mode && !is_admin()) {
return false;
}
return $should_send;
}, 10, 5);

dmsi_webhook_payload_{event_name} #

Modify the payload for a specific event before delivery. Replace {event_name} with underscores instead of dots.

Parameters: ($payload, $webhook_id, $context)

Return: Modified payload array. Note: event, webhook_id, and timestamp are restored if removed.

add_filter('dmsi_webhook_payload_license_created', function($payload, $webhook_id, $context) {
// Add a custom field to the data
$payload['data']['source_environment'] = wp_get_environment_type();
return $payload;
}, 10, 3);

dmsi_webhook_transform_payload #

Final payload transformation hook, applied after all per-endpoint customization rules.

Parameters: ($payload, $endpoint_id, $event_name)

Return: Modified payload array

add_filter('dmsi_webhook_transform_payload', function($payload, $endpoint_id, $event_name) {
// Strip internal fields before delivery to a specific endpoint
if ($endpoint_id === 12) {
unset($payload['data']['internal_user_id']);
}
return $payload;
}, 10, 3);

dmsi_webhooks_license_valid #

Override the license validity check that gates delivery scheduling. Use with caution.

Parameters: (bool $valid)

Return: bool

add_filter('dmsi_webhooks_license_valid', function(bool $valid): bool {
// Always valid in local/staging environments
if (wp_get_environment_type() !== 'production') {
return true;
}
return $valid;
});

Related Topics #

• Available WordPress Actions
• Registering Custom Events
• Payload Customization