Claude Platform Docs

Get File Metadata

FileMetadata Files.RetrieveMetadata(parameters, cancellationToken = default)
GET/v1/files/{file_id}

Get File Metadata

Parameters
FileRetrieveMetadataParams parameters
required string fileID

ID of the File.

string workspaceID

Optional header to select the Workspace for this request. The value is a Workspace ID (for example, wrkspc_011CZkZaBF1tNoB5wlCeusgy).

Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

Returns
class FileMetadata { Type = "file"; ID; CreatedAt; /* 5 more */ }
JsonElement Type = "file"

Object type.

For files, this is always "file".

required string ID

Unique object identifier.

The format and length of IDs may change over time.

required DateTimeOffset CreatedAt

RFC 3339 datetime string representing when the file was created.

formatdate-time
required string Filename

Original filename of the uploaded file.

maxLength500
minLength1
required string MimeType

MIME type of the file.

maxLength255
minLength1
required long SizeBytes

Size of the file in bytes.

minimum0
bool Downloadable

Whether the file can be downloaded.

DateTimeOffset? ExpiresAt

RFC 3339 datetime string representing when the file will expire and become unavailable for download. Null if the file does not expire. For files uploaded with expires_in_seconds, this is the upload time plus that value.

formatdate-time
Get File Metadata
FileRetrieveMetadataParams parameters = new() { FileID = "file_id" };

var fileMetadata = await client.Files.RetrieveMetadata(parameters);

Console.WriteLine(fileMetadata);
Returns Examples
Response 200
{
  "id": "file_011CNha8iCJcU1wXNR6q4V8w",
  "created_at": "2025-04-15T18:37:24.100435Z",
  "filename": "document.pdf",
  "mime_type": "application/pdf",
  "size_bytes": 102400,
  "type": "file",
  "downloadable": false,
  "expires_at": "2025-05-15T18:37:24.100435Z"
}