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fix(schema): declare array items for upsert_event tool to satisfy OpenAI strict mode #224

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Merged
chubes4 merged 1 commit into from
May 2, 2026
Merged

fix(schema): declare array items for upsert_event tool to satisfy OpenAI strict mode #224

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10 changes: 10 additions & 0 deletions inc/Core/EventSchemaProvider.php
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Original file line number Diff line number Diff line change
Expand Up @@ -87,6 +87,7 @@ class EventSchemaProvider {
),
'occurrenceDates' => array(
'type' => 'array',
'items' => array( 'type' => 'string' ),
'required' => false,
'description' => 'For recurring events: array of specific dates (YYYY-MM-DD) when the event occurs within the start/end range. If provided, event displays only on these dates instead of every day in the range.',
'schema_property' => null,
Expand Down Expand Up @@ -331,6 +332,15 @@ private static function fieldsToToolParameters( array $fields ): array {
$param['enum'] = $field['enum'];
}

// JSON Schema requires `items` on every array type, and OpenAI's
// strict tool schema validation rejects arrays without it.
// Propagate `items` from the field declaration; default to a string
// array when the declaration is incomplete to avoid emitting an
// invalid schema that would fail at runtime.
if ( 'array' === ( $field['type'] ?? '' ) ) {
$param['items'] = $field['items'] ?? array( 'type' => 'string' );
}

$params[ $key ] = $param;
}

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