Related: Endpoint Tool Generation (requestBody schema logic), Handling Large / Binary Responses
For operations declaring multipart/form-data the handler builds a streaming FormData.
Supported requestBody value shapes:
{ filename: 'a.txt', content: 'text' }
{ filename: 'a.bin', value: Uint8Array }
{ filename: 'a.bin', stream: Readable }
Strings & objects auto JSON-stringified when needed.
Skip manually setting Content-Type; boundary auto-managed.
Next: Query Parameter Styles.