abdullah4ai/foundation-models
swiftship/internal/skills/data/features/foundation-models/SKILL.md
On-device AI with Apple FoundationModels framework: text generation, streaming responses, structured output with @Generable. Use when adding on-device AI features, text generation, or ML-powered content creation. Triggers: FoundationModels, @Generable, LanguageModelSession, on-device AI, text generation.
$ install --global
skillsauthnpx skillsauth add abdullah4ai/apple-dev-docs foundation-modelsInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Last scanned: Mar 30, 2026, 4:49 AM36.8s1 file scanned
SKILL.md
- name:
- foundation-models
- description:
- On-device AI with Apple FoundationModels framework: text generation, streaming responses, structured output with @Generable. Use when adding on-device AI features, text generation, or ML-powered content creation. Triggers: FoundationModels, @Generable, LanguageModelSession, on-device AI, text generation.
Foundation Models
APPLE ON-DEVICE AI (FoundationModels — iOS 26+): FRAMEWORK: import FoundationModels
AVAILABILITY CHECK (MANDATORY — model may not be available on all devices): guard case .available = SystemLanguageModel.default.availability else { // Show "This feature requires Apple Intelligence" message return }
BASIC TEXT GENERATION: let session = LanguageModelSession() let response = try await session.respond(to: "Summarize this text: (userText)") print(response.content)
STREAMING GENERATION: let stream = session.streamResponse(to: prompt) for try await partial in stream { displayText += partial.text }
STRUCTURED OUTPUT with @Generable: @Generable struct RecipeSuggestion { @Guide(description: "Name of the dish") var name: String @Guide(description: "Estimated prep time in minutes") var prepTime: Int @Guide(description: "Main ingredients") var ingredients: [String] }
let session = LanguageModelSession() let recipe: RecipeSuggestion = try await session.respond( to: "Suggest a quick pasta dish", generating: RecipeSuggestion.self )
SESSION INSTRUCTIONS (system prompt): let session = LanguageModelSession(instructions: "You are a helpful cooking assistant. Keep responses concise.")
GUARDRAILS:
- Model output is filtered by Apple's safety system
- No internet required — fully on-device
- Context window is limited (~4K tokens typical) — keep prompts concise
- Use session.respond() for single turns, keep session for multi-turn conversations
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