[**`@jupyterlite`**](../../../README.md)

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[@jupyterlite](../../../README.md) / [@jupyterlite/kernel](../README.md) / IKernelSpecs

# Interface: `IKernelSpecs`

Defined in: packages/services/lib/kernel/tokens.d.ts:102

The interface for the kernel specs service.

## Properties

### `changed`

> `readonly` `**changed**`: `ISignal`\<`IKernelSpecs`, `null` \| `ISpecModels`\>

Defined in: packages/services/lib/kernel/tokens.d.ts:122

Signal emitted when the specs change.

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### `defaultKernelName`

> `readonly` **`defaultKernelName`**: `string`

Defined in: packages/services/lib/kernel/tokens.d.ts:114

Get the default kernel name.

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### `factories`

> `readonly` `**factories**`: [`KernelFactories`](../namespaces/KernelSpecs/type-aliases/KernelFactories.md)

Defined in: packages/services/lib/kernel/tokens.d.ts:118

Get the kernel factories for the current kernels.

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### `register()`

> **`register`**: (`options`) => `void`

Defined in: packages/services/lib/kernel/tokens.d.ts:128

Register a new kernel spec

#### Parameters

##### options

[`IKernelOptions`](../namespaces/KernelSpecs/interfaces/IKernelOptions.md)

The kernel spec options.

#### Returns

`void`

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### `specs`

> `readonly` `**specs**: `null` \| `ISpecModels`

Defined in: packages/services/lib/kernel/tokens.d.ts:110

Get the kernel specs.