Claude Platform Docs

Get File Metadata

$client->beta->files->retrieveMetadata(string fileID, ?list<AnthropicBeta> betas, ?string workspaceID): BetaFileMetadata
GET/v1/files/{file_id}

Get File Metadata

Parameters
fileID: string⁠Path parameter

ID of the File.

betas?:optional list<AnthropicBeta>⁠Header parameter

Optional header to specify the beta version(s) you want to use.

workspaceID?:optional string⁠Header parameter

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 BetaFileMetadata { $type = 'file'; $id; $createdAt; /* 6 more */ }
"file" type

Object type.

For files, this is always "file".

string id

Unique object identifier.

The format and length of IDs may change over time.

\Datetime createdAt

RFC 3339 datetime string representing when the file was created.

string filename

Original filename of the uploaded file.

string mimeType

MIME type of the file.

int sizeBytes

Size of the file in bytes.

?bool downloadable

Whether the file can be downloaded.

?\Datetime 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.

?BetaFileScope scope

The scope of this file, indicating the context in which it was created (e.g., a session).

Get File Metadata
<?php

require_once dirname(__DIR__) . '/vendor/autoload.php';

$client = new Client(apiKey: 'my-anthropic-api-key');

$betaFileMetadata = $client->beta->files->retrieveMetadata(
  'file_id',
  betas: [AnthropicBeta::MESSAGE_BATCHES_2024_09_24],
  workspaceID: 'wrkspc_011CZkZaBF1tNoB5wlCeusgy',
);

var_dump($betaFileMetadata);
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",
  "scope": {
    "id": "id",
    "type": "session"
  }
}