AvdLee/SwiftUI-Agent-Skill is a portable set of expert guidance for AI coding tools that work with SwiftUI, Apple’s framework for building app interfaces. It helps teams and developers review, refactor, and write SwiftUI code involving state, view structure, performance, and newer visual APIs. The catalogue entries provide the skill and plugin instructions that agents use to apply this guidance.
Borrowing it
Nothing to install: this file belongs to AvdLee/SwiftUI-Agent-Skill. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/AvdLee/SwiftUI-Agent-Skill/main/AGENTS.mdgit clone --depth 1 https://github.com/AvdLee/SwiftUI-Agent-SkillWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/avdlee/swiftui-agent-skill/agents-md)<a href="https://agentmods.dev/instructions/avdlee/swiftui-agent-skill/agents-md"><img src="https://agentmods.dev/badge/instructions/avdlee/swiftui-agent-skill/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/avdlee/swiftui-agent-skill/agents-md"><img src="https://agentmods.dev/badge/instructions/avdlee/swiftui-agent-skill/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.01205 | $0.01205 |
| Opus 5.5 | $0.00482 | $0.00482 |
| Sonnet 5.5 | $0.00241 | $0.00241 |
| Haiku 4.5 | $0.00120 | $0.00120 |
Grade A, and why
SwiftUI-Agent-Skill AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 28d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 153 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Guidelines for SwiftUI Expert Skill
This document provides guidance for AI agents working with this skill to ensure consistency and avoid common pitfalls.
Core Principles
1. SwiftUI Focus Only
This is a SwiftUI skill. Do not include:
- Swift concurrency patterns (use
.taskfor SwiftUI-specific needs only) - General Swift language features unrelated to SwiftUI
- Backend or server-side Swift patterns
- UIKit patterns (except when bridging is necessary)
2. No Code Formatting or Linting
Do not include formatting/linting rules. Avoid:
- Property ordering requirements (environment, state, body, etc.)
- Code organization mandates
- Whitespace or indentation rules
- Naming convention enforcement
- File structure requirements
Exception: Mention organization patterns as optional suggestions for readability, never as requirements.
3. No Architectural Opinions
Stick to facts, not architectures. Avoid:
- Enforcing MVVM, MVC, VIPER, or any specific architecture
- Mandating view model patterns
- Requiring specific folder structures
- Dictating dependency injection patterns
- Prescribing router/coordinator patterns
Exception: Suggest separating business logic for testability without enforcing how.
4. Keep Tooling SwiftUI-Specific and Consent-Aware
The skill includes focused Instruments tooling for SwiftUI performance work.
Tool-specific instructions are allowed only when they directly support the
bundled trace recording and analysis workflows. Do not add unrelated IDE,
debugging, build-system, or general command-line guidance. The one other exception
is a brief mention of the RocketSim CLI for posing the iPhone Duo simulator when
verifying layouts (references/iphone-duo.md).
Agents using the trace tooling must:
- Prefer app-scoped
--attachor--launchrecordings. - Explain the privacy implications and obtain explicit user approval before a system-wide recording.
- Pass
--allow-system-wide-recordingwith--all-processesafter approval. - Avoid exposing environment-variable values or other secrets in output.
- Treat trace files and extracted logs as potentially sensitive user data.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 28d ago Changed · +2 lines · +35 tokens per session 7104b06db2e1
- 1mo ago First seen · 151 lines · 1,170 tokens per session scan A 3a91b500561e
SwiftUI-Agent-Skill AGENTS.md is an instructions file published in the GitHub repository AvdLee/SwiftUI-Agent-Skill (3,773 stars, last pushed 21d ago), licensed MIT. It adds 1,205 tokens to every session, about $0.0048 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.