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.
npx skills add Prisma-Labs-Dev/apple-skills --skill swift-concurrencygit clone --depth 1 https://github.com/Prisma-Labs-Dev/apple-skillsWrote 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/skills/prisma-labs-dev/apple-skills/swift-concurrency)<a href="https://agentmods.dev/skills/prisma-labs-dev/apple-skills/swift-concurrency"><img src="https://agentmods.dev/badge/skills/prisma-labs-dev/apple-skills/swift-concurrency/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/skills/prisma-labs-dev/apple-skills/swift-concurrency"><img src="https://agentmods.dev/badge/skills/prisma-labs-dev/apple-skills/swift-concurrency.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- NVIDIA SkillSpector pass
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 | $0.00031 | $0.00324 |
| Opus 5 | $0.00015 | $0.00162 |
| Sonnet 5 | $0.00006 | $0.00065 |
| Haiku 4.5 | $0.00003 | $0.00032 |
Grade A, and why
swift-concurrency 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 10d 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.
What it actually says
Swift Concurrency Reference
Structured concurrency, actors, and async sequences in Swift.
Downloaded Reference Files
| File | Content |
|---|---|
| concurrency-overview.md | Swift concurrency index |
| task.md | Task struct |
| taskgroup.md | TaskGroup for parallel work |
| actor.md | Actor protocol |
| asyncsequence.md | AsyncSequence protocol |
| asyncstream.md | AsyncStream |
| checkedcontinuation.md | CheckedContinuation for bridging |
Fetching More Docs
- Search this skill's local
.mdfiles first. - If the topic is not here, check the other installed Apple skills you have available by their names, descriptions, or
SKILL.mdfrontmatter, then grep their local files. This is faster and uses less context than fetching new docs from the internet. - If no installed skill has the page, use the relevant documentation path from
concurrency-overview.mdwith thesosumi.aiMarkdown mirror. For example,/documentation/swift/taskmaps tohttps://sosumi.ai/documentation/swift/task.
What ships with it
7 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.
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.
- 10d ago First seen · 30 lines · 31 tokens per session scan A 6b51c7cfc0a2
swift-concurrency is a skill published in the GitHub repository Prisma-Labs-Dev/apple-skills (325 stars, last pushed 29d ago), licensed MIT. It adds 31 tokens to every session and 324 once invoked, about $0.0002 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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