What is Swift-Agent-Skill AGENTS.md?

Guidance for AI agents working on Swift software, including the Swift language, Apple development, concurrency, packages, tests, linting, and formatting. It emphasizes common, maintainable Swift practices and separates established facts from personal preferences.

Use it when reviewing or writing Swift code, designing APIs, handling optionals and errors, using concurrency, configuring Swift Package Manager, writing tests, or applying SwiftLint and formatting.

It helps an agent make broadly applicable Swift decisions without narrowing the advice to one framework, architecture, or team convention.

How rouzbeh-abadi/Swift-Agent-Skill configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to rouzbeh-abadi/Swift-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.

Copy the file

curl -O https://raw.githubusercontent.com/rouzbeh-abadi/Swift-Agent-Skill/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/rouzbeh-abadi/Swift-Agent-Skill

Made for: Codex, OpenCode.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/rouzbeh-abadi/swift-agent-skill/agents-md/github.svg)](https://agentmods.dev/instructions/rouzbeh-abadi/swift-agent-skill/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/rouzbeh-abadi/swift-agent-skill/agents-md"><img src="https://agentmods.dev/badge/instructions/rouzbeh-abadi/swift-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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/rouzbeh-abadi/swift-agent-skill/agents-md"><img src="https://agentmods.dev/badge/instructions/rouzbeh-abadi/swift-agent-skill/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 732 This file is loaded in full into every session.

When invoked 732 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.

Model	Per session	Once invoked
Fable 5.1	$0.00732	$0.00732
Opus 5.5	$0.00293	$0.00293
Sonnet 5.5	$0.00146	$0.00146
Haiku 4.5	$0.00073	$0.00073

Measured 2mo ago against content hash 3cd8207c9a1e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Swift-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 2mo 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.

AGENTS.md · 105 lines

How it starts

The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Guidelines for Swift Expert Skill

This document guides AI agents working with this repository so the published skill stays broad, practical, and trustworthy for real Swift development work.

Core Principles

1. Broad Swift Scope

This is a general Swift skill, not a single-topic skill. Cover:

core Swift language patterns
optionals, errors, and API design
Swift concurrency
Swift Package Manager workflows
testing guidance
SwiftLint and formatting support

Do not narrow the skill to only:

SwiftLint
SwiftUI
one architecture style
one team-specific coding convention

2. Prefer Standard Swift Guidance

Use common Swift and Apple ecosystem practices. Prioritize:

language clarity
safe and idiomatic APIs
maintainable concurrency patterns
readable package and test setup
widely used lint and formatting conventions

Avoid inventing custom rules unless the user explicitly wants opinionated team standards.

3. Facts First, Opinions Second

Lead with correctness and maintainability. Use strong language for:

unsafe patterns like ! or as!
concurrency misuse
weak error handling
obviously brittle package configuration

Use softer language for:

naming nuance
file organization
access control preferences
style choices where teams reasonably differ

4. Safe Edits First

Prefer low-risk improvements before deeper refactors. Good candidates:

mechanical formatting cleanup
redundant syntax removal
isEmpty and boolean simplifications
safer optional handling
small package manifest cleanups
focused test additions around touched behavior

Use more care with:

public API changes
cross-module renames
concurrency model changes
sweeping architecture rewrites

Content Guidelines

Include These Topics

common Swift language pitfalls and modern idioms
protocol and type design guidance
error handling and optional handling
structured concurrency patterns
package manifests and dependency usage
unit testing and test readability
SwiftLint-backed formatting and linting guidance

Read the full file on GitHub · 105 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.

2mo ago First seen · 105 lines · 732 tokens per session scan A 3cd8207c9a1e

Subscribe to this mod's changes

Swift-Agent-Skill AGENTS.md is an instructions file published in the GitHub repository rouzbeh-abadi/Swift-Agent-Skill (5 stars, last pushed 7mo ago), licensed MIT. It adds 732 tokens to every session, about $0.0029 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 2026-08-31.

Kotlin and Swift Languages

Swift-Agent-Skill AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
Swift-Agent-Skill AGENTS.mdrouzbeh-abadi/Swift-Agent-Skill	Instructions file	5	7mo ago	MIT	A	732	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

Swift-Agent-Skill: Instructions file for Codex