Code: sensitive_field. Type: https://lender.report/errors/sensitive-field/.
{
"type": "https://lender.report/errors/sensitive-field/",
"title": "A sensitive field was refused",
"status": 400,
"code": "sensitive_field",
"detail": "One plain sentence that names the field and what is accepted."
} All the types are on the errors page. The API and MCP docs are at /developers/.