Fields
| Field | Type | Required | Description | Example |
|---|---|---|---|---|
bytes_ | int | :heavy_check_mark: | File size in bytes. | 123 |
container_id | str | :heavy_check_mark: | The container the file belongs to — echoes the session_id path parameter (OpenAI field name). | sess-abc123 |
created_at | int | :heavy_check_mark: | Unix timestamp (seconds) when the file was last synced. | 1755640000 |
id | str | :heavy_check_mark: | Container file id: cfile_ + base64url of the file path. | cfile_b3V0L3JlcG9ydC5jc3Y |
object | components.ContainerFileObject | :heavy_check_mark: | N/A | container.file |
path | str | :heavy_check_mark: | Session-relative file path inside the container. | out/report.csv |
source | components.ContainerFileSource | :heavy_check_mark: | Container files are always produced by the assistant sandbox. | assistant |