diff --git a/src/vs/workbench/api/common/extHostNotebookKernels.ts b/src/vs/workbench/api/common/extHostNotebookKernels.ts
index a174de9e95b..49dcbf40085 100644
--- a/src/vs/workbench/api/common/extHostNotebookKernels.ts
+++ b/src/vs/workbench/api/common/extHostNotebookKernels.ts
@@ -480,6 +480,7 @@ export class ExtHostNotebookKernels implements ExtHostNotebookKernelsShape {
 				name: result.variable.name,
 				value: result.variable.value,
 				type: result.variable.type,
+				interfaces: result.variable.interfaces,
 				language: result.variable.language,
 				expression: result.variable.expression,
 				hasNamedChildren: result.hasNamedChildren,
diff --git a/src/vs/workbench/contrib/debug/common/debug.ts b/src/vs/workbench/contrib/debug/common/debug.ts
index 2820f075163..9355d683c3c 100644
--- a/src/vs/workbench/contrib/debug/common/debug.ts
+++ b/src/vs/workbench/contrib/debug/common/debug.ts
@@ -90,6 +90,7 @@ export const CONTEXT_VARIABLE_EVALUATE_NAME_PRESENT = new RawContextKey<boolean>
 export const CONTEXT_VARIABLE_IS_READONLY = new RawContextKey<boolean>('variableIsReadonly', false, { type: 'boolean', description: nls.localize('variableIsReadonly', "True when the focused variable is read-only.") });
 export const CONTEXT_VARIABLE_VALUE = new RawContextKey<boolean>('variableValue', false, { type: 'string', description: nls.localize('variableValue', "Value of the variable, present for debug visualization clauses.") });
 export const CONTEXT_VARIABLE_TYPE = new RawContextKey<boolean>('variableType', false, { type: 'string', description: nls.localize('variableType', "Type of the variable, present for debug visualization clauses.") });
+export const CONTEXT_VARIABLE_INTERFACES = new RawContextKey<boolean>('variableInterfaces', false, { type: 'array', description: nls.localize('variableInterfaces', "Any interfaces or contracts that the variable satisfies, present for debug visualization clauses.") });
 export const CONTEXT_VARIABLE_NAME = new RawContextKey<boolean>('variableName', false, { type: 'string', description: nls.localize('variableName', "Name of the variable, present for debug visualization clauses.") });
 export const CONTEXT_VARIABLE_LANGUAGE = new RawContextKey<boolean>('variableLanguage', false, { type: 'string', description: nls.localize('variableLanguage', "Language of the variable source, present for debug visualization clauses.") });
 export const CONTEXT_VARIABLE_EXTENSIONID = new RawContextKey<boolean>('variableExtensionId', false, { type: 'string', description: nls.localize('variableExtensionId', "Extension ID of the variable source, present for debug visualization clauses.") });
diff --git a/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesDataSource.ts b/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesDataSource.ts
index 18172e308d1..13bc42a678d 100644
--- a/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesDataSource.ts
+++ b/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesDataSource.ts
@@ -21,6 +21,7 @@ export interface INotebookVariableElement {
 	readonly name: string;
 	readonly value: string;
 	readonly type?: string;
+	readonly interfaces?: string[];
 	readonly expression?: string;
 	readonly language?: string;
 	readonly indexedChildrenCount: number;
diff --git a/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesView.ts b/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesView.ts
index bab9b8086c5..18758fe6e52 100644
--- a/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesView.ts
+++ b/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesView.ts
@@ -25,7 +25,7 @@ import { ITelemetryService } from 'vs/platform/telemetry/common/telemetry';
 import { IThemeService } from 'vs/platform/theme/common/themeService';
 import { IViewPaneOptions, ViewPane } from 'vs/workbench/browser/parts/views/viewPane';
 import { IViewDescriptorService } from 'vs/workbench/common/views';
-import { CONTEXT_VARIABLE_EXTENSIONID, CONTEXT_VARIABLE_LANGUAGE, CONTEXT_VARIABLE_NAME, CONTEXT_VARIABLE_TYPE, CONTEXT_VARIABLE_VALUE } from 'vs/workbench/contrib/debug/common/debug';
+import { CONTEXT_VARIABLE_EXTENSIONID, CONTEXT_VARIABLE_INTERFACES, CONTEXT_VARIABLE_LANGUAGE, CONTEXT_VARIABLE_NAME, CONTEXT_VARIABLE_TYPE, CONTEXT_VARIABLE_VALUE } from 'vs/workbench/contrib/debug/common/debug';
 import { INotebookScope, INotebookVariableElement, NotebookVariableDataSource } from 'vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesDataSource';
 import { NotebookVariableAccessibilityProvider, NotebookVariableRenderer, NotebookVariablesDelegate } from 'vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesTree';
 import { getNotebookEditorFromEditorPane } from 'vs/workbench/contrib/notebook/browser/notebookBrowser';
@@ -122,6 +122,7 @@ export class NotebookVariablesView extends ViewPane {
 			[CONTEXT_VARIABLE_NAME.key, element.name],
 			[CONTEXT_VARIABLE_VALUE.key, element.value],
 			[CONTEXT_VARIABLE_TYPE.key, element.type],
+			[CONTEXT_VARIABLE_INTERFACES.key, element.interfaces],
 			[CONTEXT_VARIABLE_LANGUAGE.key, element.language],
 			[CONTEXT_VARIABLE_EXTENSIONID.key, element.extensionId]
 		]);
diff --git a/src/vscode-dts/vscode.proposed.notebookVariableProvider.d.ts b/src/vscode-dts/vscode.proposed.notebookVariableProvider.d.ts
index 883319ddcd9..4fac96c45f0 100644
--- a/src/vscode-dts/vscode.proposed.notebookVariableProvider.d.ts
+++ b/src/vscode-dts/vscode.proposed.notebookVariableProvider.d.ts
@@ -45,6 +45,9 @@ declare module 'vscode' {
 		/** The type of the variable's value */
 		type?: string;
 
+		/** The interfaces or contracts that the type satisfies */
+		interfaces?: string[];
+
 		/** The language of the variable's value */
 		language?: string;
 	}