uikit-expert-skill: Instructions file for Codex

AGENTS.md

uikit-expert-skill AGENTS.md is an instructions file for Codex, OpenCode from ivan-magda/uikit-expert-skill. It costs 1,384 tokens per session, scanned A, original, MIT.

Guidelines for an AI assistant working with Apple's UIKit, the framework used to build many iPhone and iPad interfaces. They limit the guidance to UIKit facts and suggestions.

In plain words
What is it for?
Use them when reviewing or writing UIKit-related guidance, while avoiding mandatory folder structures, naming rules, formatting rules, and architecture choices.
Why use it?
They keep UIKit advice separate from SwiftUI, server-side code, formatting rules, and prescribed app architectures such as MVC or MVVM. This reduces unrelated or overly prescriptive recommendations.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is ivan-magda/uikit-expert-skill's own configuration. It tells Codex and OpenCode how to work on uikit-expert-skill itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything uikit-expert-skill configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ivan-magda/uikit-expert-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.

Copy the file
curl -O https://raw.githubusercontent.com/ivan-magda/uikit-expert-skill/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/ivan-magda/uikit-expert-skill

Made for: Codex, OpenCode.

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Per session 1,384 This file is loaded in full into every session.
When invoked 1,384 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01384 $0.01384
Opus 5 $0.00692 $0.00692
Sonnet 5 $0.00277 $0.00277
Haiku 4.5 $0.00138 $0.00138

Measured 7d ago against content hash 6656ca58c947, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

uikit-expert-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 7d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

AGENTS.md · 151 lines

How it starts

The opening of the file, as written. The whole thing — 151 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Guidelines for UIKit Expert Skill

This document provides guidance for AI agents working with this skill to ensure consistency and avoid common pitfalls.

Core Principles

1. UIKit Focus Only

This is a UIKit skill. Do not include:

  • SwiftUI-only patterns (except when bridging is necessary)
  • General Swift language features unrelated to UIKit
  • Backend or server-side Swift patterns
  • Objective-C patterns (use Swift equivalents)

2. No Code Formatting or Linting

Do not include formatting/linting rules. Avoid:

  • Property ordering requirements
  • 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 coordinator/router patterns

Exception: Suggest separating business logic for testability without enforcing how.

4. No Tool-Specific Instructions in Agent Output

Agents cannot use external tools. When responding to users, do not reproduce:

  • Xcode Instruments profiling step-by-step instructions
  • Debugging tool walkthroughs
  • IDE-specific feature instructions
  • Command-line tool usage beyond basic git

Reference files may contain detailed tool walkthroughs (Instruments, Memory Graph Debugger, LLDB) as developer documentation. Do not reproduce these step-by-step instructions in your responses. Instead, briefly mention that the user can use the relevant tool (e.g., "consider profiling with Instruments" or "use the Memory Graph Debugger to investigate retain cycles").

Content Guidelines

Suggestions vs Requirements

Use "suggest" or "consider" for optional optimizations:

  • ✅ "Consider downsampling images when loading from disk"
  • ✅ "Consider using UIViewPropertyAnimator for gesture-driven animations"
  • ❌ "Always downsample images"
  • ❌ "Always use UIViewPropertyAnimator"

Read the full file on GitHub · 151 lines

Changes

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.

  1. 7d ago First seen · 151 lines · 1,384 tokens per session scan A 6656ca58c947

Subscribe to this mod's changes

uikit-expert-skill AGENTS.md is an instructions file published in the GitHub repository ivan-magda/uikit-expert-skill (8 stars, last pushed 2mo ago), licensed MIT. It adds 1,384 tokens to every session, about $0.0069 per session on Opus 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 2026-08-31.

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