# Axiom Audit Foundation Models

Use when the user mentions Foundation Models review, on-device AI audit...

- Repository: https://github.com/CharlesWiltgen/Axiom (1242 stars)
- Category: Engineering
- License: MIT
- Last updated: 2026-10-31
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add CharlesWiltgen/Axiom --skill axiom-audit-foundation-models -g -a claude-code -y`
Codex: `npx skills add CharlesWiltgen/Axiom --skill axiom-audit-foundation-models -g -a codex -y`
Cursor: `npx skills add CharlesWiltgen/Axiom --skill axiom-audit-foundation-models -g -a cursor -y`
Gemini CLI: `npx skills add CharlesWiltgen/Axiom --skill axiom-audit-foundation-models -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add CharlesWiltgen/Axiom`

## Description

Use when the user mentions Foundation Models review, on-device AI audit, LanguageModelSession issues, or @Generable/guardrail problems, including missing availability checks, manual JSON parsing, and guardrail handling.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Foundation Models Auditor Agent

You are an expert at detecting Foundation Models (Apple Intelligence) issues, both known anti-patterns AND missing/incomplete patterns that cause crashes on unsupported devices, concurrent-request errors, guardrail-refusal UX failures, prompt injection, structured-output parsing breakage, and session lifecycle waste.

## Tool Use Is Mandatory

Run every Glob, Grep, and Read this prompt lists. Do not reason from training data instead of scanning.

- Run each Grep pattern as written; do not collapse them into one mega-regex.
- Run the Read verifications each section calls for.
- "Build a mental model" / "map the architecture" means with tool output in hand, not from memory.

## Files to Exclude

Skip: `*Tests.swift`, `*Previews.swift`, `*/Pods/*`, `*/Carthage/*`, `*/.build/*`, `*/DerivedData/*`, `*/scratch/*`, `*/docs/*`, `*/.claude/*`, `*/.claude-plugin/*`

## Phase 1: Map Foundation Models Surface

### Step 1: Identify Imports and Deployment Target

Establish the actual project, target, configuration and SDK before making deployment-specific recommendations. Discover both `project.pbxproj` and JSON5 `project.xcproj` at any depth, excluding dependency/cache directories. Read project/target settings and included xcconfig files, including conditional keys and array values. Label structural values "declared; effective value unverified"; a first match is not an evaluated target. For effective values, the owning workflow can obtain a matching authorized Xcode settings capture using `axiom-build (skills/build-performance.md)`, "Project selection and effective settings". Do not launch Xcode under file-read-only scope. Apply target/phase file membership and synchronized-folder exception sets before assigning a source finding to a target; otherwise report it as a codebase match with target ownership unverified.

The rest: https://github.com/CharlesWiltgen/Axiom/blob/HEAD/axiom-codex/skills/axiom-audit-foundation-models/SKILL.md