diff --git a/src/ipc-utils.ts b/src/ipc-utils.ts
index 80b9cb99a..37b1183d0 100644
--- a/src/ipc-utils.ts
+++ b/src/ipc-utils.ts
@@ -19,6 +19,7 @@ type SnapshotKeyValueEventData = {
 
 export interface IpcEvents {
 	'add-site': [ void ];
+	'add-site-with-blueprint': [ { blueprintJson: string } ];
 	'auth-updated': [ { token: StoredToken } | { error: unknown } ];
 	'on-export': [ ImportExportEventData, string ];
 	'on-import': [ ImportExportEventData, string ];
diff --git a/src/lib/oauth.ts b/src/lib/oauth.ts
index 1d83b3c2f..80e8514d8 100644
--- a/src/lib/oauth.ts
+++ b/src/lib/oauth.ts
@@ -103,5 +103,19 @@ export async function onOpenUrlCallback( url: string ) {
 		if ( remoteSiteId && studioSiteId ) {
 			void sendIpcEventToRenderer( 'sync-connect-site', { remoteSiteId, studioSiteId } );
 		}
+	} else if ( host === 'add-site' ) {
+		const blueprintBase64 = searchParams.get( 'blueprint' );
+		if ( blueprintBase64 ) {
+			try {
+				// Decode the base64-encoded blueprint JSON
+				const blueprintJson = Buffer.from( blueprintBase64, 'base64' ).toString( 'utf-8' );
+				// Validate it's valid JSON
+				JSON.parse( blueprintJson );
+				void sendIpcEventToRenderer( 'add-site-with-blueprint', { blueprintJson } );
+			} catch ( error ) {
+				Sentry.captureException( error );
+				console.error( 'Failed to parse blueprint from deeplink:', error );
+			}
+		}
 	}
 }
diff --git a/src/lib/tests/oauth.test.ts b/src/lib/tests/oauth.test.ts
index e4d744f71..8cff3fa97 100644
--- a/src/lib/tests/oauth.test.ts
+++ b/src/lib/tests/oauth.test.ts
@@ -213,4 +213,48 @@ describe( 'onOpenUrlCallback', () => {
 			expect( sendIpcEventToRenderer ).not.toHaveBeenCalled();
 		} );
 	} );
+
+	describe( 'add-site callback', () => {
+		it( 'should handle add-site with valid base64-encoded blueprint', async () => {
+			const blueprintData = {
+				steps: [ { step: 'login', username: 'admin' } ],
+				meta: { title: 'Test Blueprint', description: 'A test blueprint' },
+			};
+			const blueprintJson = JSON.stringify( blueprintData );
+			const blueprintBase64 = Buffer.from( blueprintJson ).toString( 'base64' );
+			const url = `studio://add-site?blueprint=${ blueprintBase64 }`;
+
+			await onOpenUrlCallback( url );
+
+			expect( sendIpcEventToRenderer ).toHaveBeenCalledWith( 'add-site-with-blueprint', {
+				blueprintJson,
+			} );
+		} );
+
+		it( 'should not send event if blueprint parameter is missing', async () => {
+			const url = 'studio://add-site';
+			await onOpenUrlCallback( url );
+
+			expect( sendIpcEventToRenderer ).not.toHaveBeenCalled();
+		} );
+
+		it( 'should handle invalid base64-encoded blueprint gracefully', async () => {
+			const url = 'studio://add-site?blueprint=invalid-base64!!!';
+			await onOpenUrlCallback( url );
+
+			// Should not throw and should not send event
+			expect( sendIpcEventToRenderer ).not.toHaveBeenCalled();
+		} );
+
+		it( 'should handle invalid JSON in blueprint gracefully', async () => {
+			const invalidJson = 'not valid json';
+			const blueprintBase64 = Buffer.from( invalidJson ).toString( 'base64' );
+			const url = `studio://add-site?blueprint=${ blueprintBase64 }`;
+
+			await onOpenUrlCallback( url );
+
+			// Should not throw and should not send event
+			expect( sendIpcEventToRenderer ).not.toHaveBeenCalled();
+		} );
+	} );
 } );
diff --git a/src/modules/add-site/index.tsx b/src/modules/add-site/index.tsx
index 0586d976e..2ac554761 100644
--- a/src/modules/add-site/index.tsx
+++ b/src/modules/add-site/index.tsx
@@ -239,6 +239,7 @@ export default function AddSite( { className, variant = 'outlined' }: AddSitePro
 	const { __ } = useI18n();
 	const [ showModal, setShowModal ] = useState( false );
 	const [ nameSuggested, setNameSuggested ] = useState( false );
+	const [ initialPath, setInitialPath ] = useState< string >( '/' );
 	const defaultPhpVersion = useRootSelector( selectDefaultPhpVersion );
 	const defaultWordPressVersion = useRootSelector( selectDefaultWordPressVersion );
 	const [ blueprintPreferredVersions, setBlueprintPreferredVersions ] = useState<
@@ -314,15 +315,46 @@ export default function AddSite( { className, variant = 'outlined' }: AddSitePro
 		defaultPhpVersion,
 	] );
 
-	const openModal = useCallback( () => {
-		if ( ! isUninitialized ) {
-			void refetch();
-		}
-		setShowModal( true );
-	}, [ refetch, isUninitialized ] );
+	const openModal = useCallback(
+		( options?: { initialPath?: string; blueprint?: Blueprint } ) => {
+			if ( ! isUninitialized ) {
+				void refetch();
+			}
+			if ( options?.initialPath ) {
+				setInitialPath( options.initialPath );
+			}
+			if ( options?.blueprint ) {
+				setSelectedBlueprint( options.blueprint );
+				// Apply blueprint's preferred versions if available
+				if ( options.blueprint.blueprint?.preferredVersions ) {
+					const preferredVersions = options.blueprint.blueprint.preferredVersions as {
+						php?: string;
+						wp?: string;
+					};
+					setBlueprintPreferredVersions( preferredVersions );
+					if ( preferredVersions.php && preferredVersions.php !== 'latest' ) {
+						setPhpVersion( preferredVersions.php );
+					}
+					if ( preferredVersions.wp && preferredVersions.wp !== 'latest' ) {
+						setWpVersion( preferredVersions.wp );
+					}
+				}
+			}
+			setShowModal( true );
+		},
+		[
+			refetch,
+			isUninitialized,
+			setSelectedBlueprint,
+			setBlueprintPreferredVersions,
+			setPhpVersion,
+			setWpVersion,
+		]
+	);
 
 	const closeModal = useCallback( () => {
 		setShowModal( false );
+		setInitialPath( '/' );
 		resetForm();
 	}, [ resetForm ] );
 
@@ -382,10 +414,30 @@ export default function AddSite( { className, variant = 'outlined' }: AddSitePro
 		openModal();
 	} );
 
+	useIpcListener( 'add-site-with-blueprint', ( _event, { blueprintJson } ) => {
+		if ( isAnySiteProcessing ) {
+			return;
+		}
+		try {
+			const blueprintData = JSON.parse( blueprintJson );
+			const blueprint: Blueprint = {
+				slug: `deeplink-${ Date.now() }`,
+				title: blueprintData.meta?.title || __( 'Custom Blueprint' ),
+				excerpt: blueprintData.meta?.description || __( 'Blueprint from deeplink' ),
+				image: '',
+				playground_url: '',
+				blueprint: blueprintData,
+			};
+			openModal( { initialPath: '/blueprint/create', blueprint } );
+		} catch ( error ) {
+			console.error( 'Failed to parse blueprint from IPC event:', error );
+		}
+	} );
+
 	return (
 		<>
 			<FullscreenModal isOpen={ showModal } onClose={ closeModal }>
-				<Navigator className="w-full h-full" initialPath="/">
+				<Navigator className="w-full h-full" initialPath={ initialPath }>
 					<NavigationContent
 						{ ...addSiteProps }
 						blueprintsData={ blueprintsData }
@@ -400,7 +452,7 @@ export default function AddSite( { className, variant = 'outlined' }: AddSitePro
 			<Button
 				variant={ variant }
 				className={ className }
-				onClick={ openModal }
+				onClick={ () => openModal() }
 				disabled={ isAnySiteProcessing }
 			>
 				{ __( 'Add site' ) }