# Interface: `IOptions` [@jupyterlite/kernel](../modules/jupyterlite_kernel.md).[Kernels](../modules/jupyterlite_kernel.Kernels.md).IOptions Options to create a new Kernels. ## Properties ### `kernelspecs` > > **`kernelspecs`**: [`IKernelSpecs`](../modules/jupyterlite_kernel.md#ikernelspecs) The kernel specs service. #### Defined in [packages/kernel/src/kernels.ts:254](https://github.com/jupyterlite/jupyterlite/blob/c78cc8d/packages/kernel/src/kernels.ts#L254)