Function useFiles

useFiles(): UseFilesResult
Upload and download files through ChatGPT's optional window.openai extension.

File handling is not part of the MCP Apps bridge. Always check isSupported before calling either action; unsupported calls reject with a descriptive error. The hook does not read or update ChatGPT widget state and does not make uploaded files model-visible as a side effect.

The returned actions are referentially stable for the lifetime of the mounted runtime.

Returns UseFilesResult
Example
```
const { isSupported, upload, getDownloadUrl } = useFiles();

if (!isSupported) return <p>File handling requires ChatGPT.</p>;

const { fileId } = await upload(file);
const { downloadUrl } = await getDownloadUrl({ fileId });
```
- Defined in react/hooks/use-files.ts:28