Function isBinaryContentType

src/utils/mcpOutputStorage.ts:125–136

(contentType: string)

 * Text-ish types (text/*, json, xml, form data) are treated as non-binary.
 */
export function isBinaryContentType(contentType: string): boolean {
  if (!contentType) return false
  const mt = (contentType.split(';')[0] ?? '').trim().toLowerCase()
  if (mt.startsWith('text/')) return false
  // Structured text formats delivered with an application/ type. Use suffix
  // or exact match rather than substring so 'openxmlformats' (docx/xlsx) stays binary.
  if (mt.endsWith('+json') || mt === 'application/json') return false
  if (mt.endsWith('+xml') || mt === 'application/xml') return false
  if (mt.startsWith('application/javascript')) return false
  if (mt === 'application/x-www-form-urlencoded') return false
  return true
}

export type PersistBinaryResult =
  | { filepath: string; size: number; ext: string }