Discriminator value of the type.
CRITICAL: This MUST be a SINGLE string value, NOT an array. The type field identifies the JSON Schema type and must be exactly one of: "boolean", "integer", "number", "string", "array", "object", or "null".
❌ INCORRECT: type: ["string", "null"] // This is WRONG! ✅ CORRECT: type: "string" // For nullable string, use oneOf instead
If you need to express a nullable type (e.g., string | null), you MUST
use the IOneOf structure:
{
"oneOf": [{ "type": "string" }, { "type": "null" }]
}
NEVER use array notation in the type field. The type field is a discriminator that accepts only a single string value.
Boolean type info.