foundation-models-on-device

foundation-models-on-device is an agent skill from the ECC collection by affaan-m, listed on skills.sh. It shows how to use Apple's FoundationModels framework to run a language model on the device inside an iOS app, for iOS 26 and later. The patterns cover text generation, structured output through @Generable types, custom tool calling for domain-specific actions, and snapshot streaming that feeds partial results into the interface in real time. The skill begins with an availability check, since the model must be confirmed as available before a session is created. Because the model runs on the device, the listing says no data leaves the phone, which suits privacy-sensitive features and offline use. It applies when building Apple Intelligence features, summarising or generating text without a cloud service, extracting structured data from free text, or streaming responses to the UI. A skill is a SKILL.md file of instructions that an AI agent loads when a task calls for it. It is free and open source, and the skills.sh listing shows all three security audits passing.…