## MedplumClientOptions.fetch property [​](/content/docs/sdk/core.medplumclientoptions.fetch#medplumclientoptionsfetch-property "Direct link to MedplumClientOptions.fetch property"/index.html)

Fetch implementation.

Default is `window.fetch` (if available).

**Signature:**

```typescript
fetch?: FetchLike;
```  
- [MedplumClientOptions.fetch property](/content/docs/sdk/core.medplumclientoptions.fetch#medplumclientoptionsfetch-property/index.html)