Can these models replace server-side LLMs for world knowledge?

No. These are 3-billion parameter models optimized for summarization, extraction, and classification. They are not intended for encyclopedic reasoning or world knowledge.

What devices support Foundation Models implementation?

Implementation requires Apple Intelligence-enabled devices running iOS 26+, macOS 26+, iPadOS 26+, or visionOS 26+ in supported regions.

Why use @Generable instead of manual JSON parsing?

@Generable guarantees type safety and structure through constrained decoding, preventing crashes caused by LLM hallucinations or malformed JSON strings.

How does this skill prevent UI freezes during generation?

The skill enforces the use of Swift concurrency (async/await) and background Tasks to ensure AI generation never blocks the main UI thread.

Foundation Models for Apple Platforms

Name: Foundation Models for Apple Platforms
Author: CharlesWiltgen

byCharlesWiltgen

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233

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Mobile Development

Simplifies implementation of on-device AI features using Apple's Foundation Models framework with safety checks and best practices.

This skill provides expert guidance for integrating Apple's Foundation Models framework into modern xOS applications. It helps developers implement on-device text summarization, classification, and structured data extraction while strictly adhering to performance requirements, context window limitations, and UI responsiveness. By enforcing patterns like @Generable for type-safe structured output and async background tasks to prevent UI freezing, it ensures robust AI features that respect Apple Intelligence availability and device constraints.

Key Features

01Automated context window and overflow management patterns

02Type-safe structured output via @Generable implementation

03Apple Intelligence availability and region check enforcement

04233 GitHub stars

05Mandatory main-thread blocking prevention guidance

06Pre-configured patterns for streaming and tool-calling integration

Use Cases

01Building tool-calling workflows for local data like Calendar or Contacts

02Extracting structured data from raw text like invoices or emails

03Implementing on-device text summarization for privacy-first apps

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add charleswiltgen/axiom axiom-foundation-models

For use in Claude.ai and ChatGPT

Download Skill