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 rshankras/claude-code-apple-skills --skill sf-symbolsgit clone --depth 1 https://github.com/rshankras/claude-code-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/rshankras/claude-code-apple-skills/sf-symbols)<a href="https://agentmods.dev/skills/rshankras/claude-code-apple-skills/sf-symbols"><img src="https://agentmods.dev/badge/skills/rshankras/claude-code-apple-skills/sf-symbols/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/rshankras/claude-code-apple-skills/sf-symbols"><img src="https://agentmods.dev/badge/skills/rshankras/claude-code-apple-skills/sf-symbols.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- 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 | $0.00070 | $0.01391 |
| Opus 5 | $0.00035 | $0.00696 |
| Sonnet 5 | $0.00014 | $0.00278 |
| Haiku 4.5 | $0.00007 | $0.00139 |
Grade A, and why
sf-symbols 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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SF Symbols
Over 7,000 system symbols with free platform consistency, Dynamic Type alignment, and
accessibility — the default answer to "we need an icon." This skill covers using them well,
authoring custom ones that behave like system ones, and the animation vocabulary.
(Animation implementation patterns live in design/animation-patterns → symbol-effects.md;
this skill owns selection, authoring, and rendering.)
When This Skill Activates
- Choosing icons for tabs, toolbars, buttons, widgets ("should this be an SF Symbol?" — usually yes)
- A needed glyph doesn't exist → authoring a custom symbol
- Rendering a changing value (signal, progress, volume) as a symbol
- Symbol state changes that should animate (mute/unmute, play/pause)
Using system symbols
- Prefer symbols over custom art for tab/toolbar icons — recognizability across the platform
for free, and they scale with text styles (
imageScale, weights match adjacent text). - Keep platform-conventional symbols conventional: share, trash, search mean one thing each.
- Rendering modes: Monochrome · Hierarchical (one color, opacity-derived depth) · Palette (2–3 explicit colors) · Multicolor (intrinsic colors). Pick per context — hierarchical shines in toolbars; multicolor in content.
- Gradients (SF Symbols 7-era): a smooth linear gradient generated from one source color, available in all rendering modes — use where depth helps, keep flat in dense UI.
- Variable value: pass
variableValue(0–1) to render magnitude — signal bars, progress. Thresholds distribute evenly; 0% is the only "empty" state (a symbol reads "full" before 100%). Variable Draw (SF Symbols 7) renders the path at a percentage instead of activating layers — an alternative for progress/temperature; a symbol can carry both but renders one.
Animation vocabulary
Presets: Bounce · Pulse · Variable Color · Scale · Appear · Disappear · Replace · Draw On/Off (SF Symbols 7). Behavior classes: discrete (one-off), indefinite (until removed — always pair with removal logic), transition, content transition.
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.
- 11d ago First seen · 97 lines · 70 tokens per session scan A 41df988a2ee6
sf-symbols is a skill published in the GitHub repository rshankras/claude-code-apple-skills (719 stars, last pushed 1mo ago), licensed MIT. It adds 70 tokens to every session and 1,391 once invoked, about $0.0003 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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