apple-foundation-models-skill

name	apple-foundation-models-skill
description	Write, review, or integrate Apple's FoundationModels framework (iOS 26.0+, macOS 26.0+), including WWDC 2026 beta APIs (OSs 27.0+). Use for on-device generation, structured output, tool calling, streaming, prompt attachments, dynamic profiles, agentic orchestration, session properties, Private Cloud Compute, or custom language model providers.

Apple Foundation Models Skill

This skill acts as a router. When handling tasks or queries related to Apple's FoundationModels framework, identify the relevant topic below and load the corresponding reference file before performing any code generation or analysis.

Topic Router

Topic / API Surface	Target Reference
All References Index	references/_index.md
Model Access & Availability	system-language-model.md
Session & Transcript Lifecycle	session-lifecycle.md
Structured Output (@Generable)	guided-generation.md
Tool Calling & Capabilities	tool-calling.md
Sampling & Options	generation-options.md
Streaming UI & Responses	streaming.md
Error Handling & Overflow	error-handling.md
Swift Concurrency & Actor Isolation	concurrency.md
Performance & Prewarming	performance.md
Prompt Engineering & Strategy	prompting-techniques.md
Prompt Attachments (Images)	prompt-attachments.md
Dynamic Profiles & Policies	dynamic-profiles.md
Session Properties	session-properties.md
Private Cloud Compute (PCC)	private-cloud-compute.md
Custom Language Model Providers	custom-language-model-provider.md
Framework Glossary	glossary.md

Boundaries (Out of Scope)

Do NOT use this skill for:

• General Swift Concurrency (see Swift Concurrency Skill).
• Standard SwiftUI patterns (see SwiftUI Expert Skill).
• Non-Apple/third-party LLM APIs.
• Model training/CoreML integration details.