WWDC26: LLM search using Core Spotlight | Apple
Apple introduces SpotlightSearchTool, letting on-device LLMs search app content via Core Spotlight for grounded responses.
“today, we're introducing SpotlightSearchTool. It's a tool that adopts the tool protocol, to let a language model directly search your app's content in Core Spotlight for contextual response generation.”
At WWDC 2026, Apple unveiled SpotlightSearchTool, which integrates the Foundation Models framework with Core Spotlight so on-device language models can retrieve and reason over an app's indexed content through tool-calling. It matters as a concrete step toward standardized, privacy-preserving on-device RAG, lowering the barrier for developers to build grounded conversational features without server-side LLMs.