---
title: Upload File
url: https://platform.claude.com/docs/en/api/php/files/upload
---

# Upload File

`$client->files->upload(FileParam | string file, ?int expiresInSeconds, ?string workspaceID): FileMetadata`

**POST** `/v1/files`

Upload File

## Parameters

- `file: FileParam | string`

  The file to upload. Only the final path component of the part's `filename` is kept; an absent or empty `filename` is replaced with `unnamed` plus the extension for the file's stored `mime_type`, when known.

- `expiresInSeconds?: optional int`

  Seconds from upload until the file expires and its bytes become permanently unavailable. Must be between 3600 (one hour) and 7776000 (ninety days).

- `workspaceID?: optional string` (header 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 FileMetadata`

  - `"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.

## Example

```php
<?php

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

use Anthropic\Client;
use Anthropic\Core\FileParam;

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

$fileMetadata = $client->files->upload(
  file: FileParam::fromString('Example data', filename: uniqid('file-upload-', true)),
  expiresInSeconds: 3600,
  workspaceID: 'wrkspc_011CZkZaBF1tNoB5wlCeusgy',
);

var_dump($fileMetadata);
```

### Response (200)

```json
{
  "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"
}
```