What is programming-swift?

A complete reference for the Swift programming language, covering its syntax, features, concurrency, and formal language rules.

Use it to look up Swift syntax, language features, concurrent programming, and formal reference details.

It provides a single source for understanding how Swift code is written and how the language behaves.

programming-swift — Skill for Claude Code and Codex by nonameplum

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add nonameplum/agent-skills --skill programming-swift

Clone the repo

git clone --depth 1 https://github.com/nonameplum/agent-skills

Made for: Claude Code, Codex.

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/skills/nonameplum/agent-skills/programming-swift.svg)](https://agentmods.dev/skills/nonameplum/agent-skills/programming-swift)

Your own site

<a href="https://agentmods.dev/skills/nonameplum/agent-skills/programming-swift"><img src="https://agentmods.dev/badge/skills/nonameplum/agent-skills/programming-swift.svg" alt="Measured on agentmods" height="20"></a>

Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,389 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown 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	$0.00027	$0.01389
Opus 5	$0.00014	$0.00694
Sonnet 5	$0.00005	$0.00278
Haiku 4.5	$0.00003	$0.00139

Measured 7d ago against content hash 7cb6b4f56943, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

programming-swift 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.

programming-swift/SKILL.md · 76 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

7d ago First seen · 76 lines · 27 tokens per session scan A 7cb6b4f56943

Subscribe to this mod's changes

programming-swift is a skill published in the GitHub repository nonameplum/agent-skills (17 stars, last pushed 1mo ago), with no licence file. It adds 27 tokens to every session and 1,389 once invoked, about $0.0001 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 2026-08-30.

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