Borrowing it
Nothing to install: this file belongs to chama-x/GroundRules. 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/chama-x/GroundRules/master/.agents/archive/v3/skill_hig-doctor/skills/hig-technologies/SKILL.mdgit clone --depth 1 https://github.com/chama-x/GroundRulesWrote 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/chama-x/groundrules/hig-technologies)<a href="https://agentmods.dev/skills/chama-x/groundrules/hig-technologies"><img src="https://agentmods.dev/badge/skills/chama-x/groundrules/hig-technologies/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/chama-x/groundrules/hig-technologies"><img src="https://agentmods.dev/badge/skills/chama-x/groundrules/hig-technologies.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 | $0.00216 | $0.01701 |
| Opus 5.5 | $0.00086 | $0.00680 |
| Sonnet 5.5 | $0.00043 | $0.00340 |
| Haiku 4.5 | $0.00022 | $0.00170 |
Grade A, and why
hig-technologies 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 1mo 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.
This is a copy
100% identical to hig-technologies — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Apple HIG: Technologies
Check for .claude/apple-design-context.md before asking questions. Use existing context and only ask for information not already covered.
Key Principles
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Apple technologies extend app capabilities through system integration. Each technology has established user-facing patterns; deviating creates confusion and erodes trust.
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Privacy and user control are paramount. Especially for health, payment, and identity technologies. Request only needed data, explain why, respect choices.
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Siri: natural, predictable, recoverable. Clear conversational intent phrases that complete quickly and confirm results. Support App Shortcuts for proactive suggestions. Handle errors with clear fallbacks.
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Payments: transparent and frictionless. Standard Apple Pay button styles. Never ask for card details when Apple Pay is available. Clearly describe what the user is buying, the price, and whether it's one-time or subscription.
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Health data is deeply personal. Explain the health benefit before requesting access. CareKit tasks should be encouraging. ResearchKit consent flows must be thorough, readable, and respect autonomy.
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HomeKit: simple and reliable. Immediate response when controlling devices. Clear device state. Graceful handling of connectivity issues.
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AR: genuine value, not gimmicks. Use AR when spatial context improves understanding. Guide setup (surface, lighting, space). Provide clear exit back to standard interaction.
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ML and generative AI: enhance without surprising. Smart suggestions, image recognition, text prediction. Clearly attribute AI-generated content. Controls to edit, regenerate, or dismiss. Let users correct mistakes.
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Sign in with Apple as top option. Standard button styles. Respect email hiding preference. ID Verifier: guided flows, don't store sensitive data beyond what verification requires.
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iCloud: invisible and reliable sync. Data appears on all devices without manual intervention. Handle conflicts gracefully. Never lose data.
What ships with it
28 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.
- references/airplay.md 1.9 KB
- references/always-on.md 1.6 KB
- references/apple-pay.md 5.7 KB
- references/augmented-reality.md 4.3 KB
- references/carekit.md 2.4 KB
- references/carplay.md 2.2 KB
- references/game-center.md 3.7 KB
- references/generative-ai.md 2.2 KB
- references/healthkit.md 2.3 KB
- references/homekit.md 4.3 KB
- references/icloud.md 1.2 KB
- references/id-verifier.md 2.7 KB
- references/imessage-apps-and-stickers.md 1.2 KB
- references/in-app-purchase.md 6.3 KB
- references/live-photos.md 1.1 KB
- references/mac-catalyst.md 4.0 KB
- references/machine-learning.md 10 KB
- references/maps.md 5.0 KB
- references/nfc.md 969 B
- references/photo-editing.md 938 B
- references/researchkit.md 2.5 KB
- references/shareplay.md 2.2 KB
- references/shazamkit.md 1.2 KB
- references/sign-in-with-apple.md 5.0 KB
- references/siri.md 9.7 KB
- references/tap-to-pay-on-iphone.md 4.8 KB
- references/voiceover.md 1.3 KB
- references/wallet.md 4.8 KB
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.
- 1mo ago First seen · 108 lines · 216 tokens per session scan A 8c115fb78bc1
hig-technologies is a skill published in the GitHub repository chama-x/GroundRules (5 stars, last pushed 2mo ago), licensed MIT. It adds 216 tokens to every session and 1,701 once invoked, about $0.0009 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to hig-technologies, differing in 0 lines, and is treated as a copy.
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