## Get File Metadata

`FileMetadata Beta.Files.RetrieveMetadata(FileRetrieveMetadataParamsparameters, CancellationTokencancellationToken = default)`

**get** `/v1/files/{file_id}`

Get File Metadata

### Parameters

- `FileRetrieveMetadataParams parameters`

  - `required string fileID`

    ID of the File.

  - `IReadOnlyList<AnthropicBeta> betas`

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

    - `"message-batches-2024-09-24"MessageBatches2024_09_24`

    - `"prompt-caching-2024-07-31"PromptCaching2024_07_31`

    - `"computer-use-2024-10-22"ComputerUse2024_10_22`

    - `"computer-use-2025-01-24"ComputerUse2025_01_24`

    - `"pdfs-2024-09-25"Pdfs2024_09_25`

    - `"token-counting-2024-11-01"TokenCounting2024_11_01`

    - `"token-efficient-tools-2025-02-19"TokenEfficientTools2025_02_19`

    - `"output-128k-2025-02-19"Output128k2025_02_19`

    - `"files-api-2025-04-14"FilesApi2025_04_14`

    - `"mcp-client-2025-04-04"McpClient2025_04_04`

    - `"mcp-client-2025-11-20"McpClient2025_11_20`

    - `"dev-full-thinking-2025-05-14"DevFullThinking2025_05_14`

    - `"interleaved-thinking-2025-05-14"InterleavedThinking2025_05_14`

    - `"code-execution-2025-05-22"CodeExecution2025_05_22`

    - `"extended-cache-ttl-2025-04-11"ExtendedCacheTtl2025_04_11`

    - `"context-1m-2025-08-07"Context1m2025_08_07`

    - `"context-management-2025-06-27"ContextManagement2025_06_27`

    - `"model-context-window-exceeded-2025-08-26"ModelContextWindowExceeded2025_08_26`

    - `"skills-2025-10-02"Skills2025_10_02`

    - `"fast-mode-2026-02-01"FastMode2026_02_01`

    - `"output-300k-2026-03-24"Output300k2026_03_24`

    - `"user-profiles-2026-03-24"UserProfiles2026_03_24`

    - `"advisor-tool-2026-03-01"AdvisorTool2026_03_01`

    - `"managed-agents-2026-04-01"ManagedAgents2026_04_01`

    - `"cache-diagnosis-2026-04-07"CacheDiagnosis2026_04_07`

    - `"thinking-token-count-2026-05-13"ThinkingTokenCount2026_05_13`

### Returns

- `class FileMetadata:`

  - `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.

  - `required string Filename`

    Original filename of the uploaded file.

  - `required string MimeType`

    MIME type of the file.

  - `required Long SizeBytes`

    Size of the file in bytes.

  - `JsonElement Type "file"constant`

    Object type.

    For files, this is always `"file"`.

  - `Boolean Downloadable`

    Whether the file can be downloaded.

  - `BetaFileScope? Scope`

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

    - `required string ID`

      The ID of the scoping resource (e.g., the session ID).

    - `JsonElement Type "session"constant`

      The type of scope (e.g., `"session"`).

### Example

```csharp
FileRetrieveMetadataParams parameters = new() { FileID = "file_id" };

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

Console.WriteLine(fileMetadata);
```

#### Response

```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,
  "scope": {
    "id": "id",
    "type": "session"
  }
}
```