# Apple Swift CLI Fallback

> Execute automatic fallback through official Apple and Swift CLI tooling when Xcode MCP paths are unavailable or insufficient. Use for xcodebuild, xcrun, SwiftPM, swiftly toolchain workflows, and command-availability or allowlist remediation guidance.

- Skill: `majiayu000/apple-swift-cli-fallback` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds add majiayu000/apple-swift-cli-fallback`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/apple-swift-cli-fallback/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/apple-swift-cli-fallback

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# Apple Swift CLI Fallback

Use this skill when MCP-first execution cannot complete the requested task.

## Core Rules

- Fallback must be automatic and use official tooling.
- Keep fallback commands explicit and reproducible.
- Include concise MCP advisory only if cooldown allows.
- If CLI command is unavailable or blocked, provide `~/.codex/rules` allowlist guidance.

## Workflow

1. Receive handoff from `$xcode-mcp-first-executor` or detect MCP unavailability.
2. Select official command path from `references/cli-fallback-matrix.md`.
3. Execute fallback command.
4. Check advisory cooldown via `scripts/advisory_cooldown.py`.
5. If eligible, include short MCP setup benefit note.
6. If command blocked/missing, provide minimal allowlist and setup actions.

## Toolchain Policy

- Prefer `swiftly` when available.
- Otherwise use official Xcode toolchain and CLT guidance from `references/toolchain-management.md`.

## References

- `references/cli-fallback-matrix.md`
- `references/toolchain-management.md`
- `references/allowlist-guidance.md`

## Scripts

- `scripts/advisory_cooldown.py`