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 agentmods add skills/abdullah4ai/apple-developer-toolkit/safari-extensionnpx skills add Abdullah4AI/apple-developer-toolkit --skill safari-extensiongit clone --depth 1 https://github.com/Abdullah4AI/apple-developer-toolkitWrote 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/abdullah4ai/apple-developer-toolkit/safari-extension)<a href="https://agentmods.dev/skills/abdullah4ai/apple-developer-toolkit/safari-extension"><img src="https://agentmods.dev/badge/skills/abdullah4ai/apple-developer-toolkit/safari-extension.svg" alt="Measured on agentmods" 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 | $0.00065 | $0.00370 |
| Opus 5 | $0.00032 | $0.00185 |
| Sonnet 5 | $0.00013 | $0.00074 |
| Haiku 4.5 | $0.00006 | $0.00037 |
Grade A, and why
safari-extension 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 6d 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
Safari Extension
SAFARI WEB EXTENSION: SETUP: Requires separate extension target (kind: "safari" in plan extensions array). Safari Web Extensions use web technologies (JS/HTML/CSS) plus a native Swift wrapper.
SWIFT EXTENSION HANDLER (optional — for native communication): class SafariExtensionHandler: SFSafariExtensionHandler { // Called when toolbar button is clicked override func toolbarItemClicked(in window: SFSafariWindow) { window.getActiveTab { tab in tab?.getActivePage { page in page?.dispatchMessageToScript(withName: "buttonClicked", userInfo: [:]) } } }
// Receive messages from JavaScript content scripts
override func messageReceived(withName messageName: String, from page: SFSafariPage, userInfo: [String: Any]?) {
// Handle message from JS: page.dispatchMessageToExtension(...)
}
}
INFO.PLIST KEYS (extension): NSExtensionPrincipalClass: $(PRODUCT_MODULE_NAME).SafariExtensionHandler NSExtensionAttributes: SFSafariWebsiteAccess: { Level: All }
WEB EXTENSION RESOURCES (in extension bundle):
- manifest.json (Web Extension manifest v3)
- background.js (service worker)
- content.js (injected into pages)
- popup.html (toolbar popup)
ENABLE IN SAFARI: User must enable in Safari → Settings → Extensions.
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.
- 6d ago First seen · 40 lines · 65 tokens per session scan A 9eb5122de80a
safari-extension is a skill published in the GitHub repository Abdullah4AI/apple-developer-toolkit (10 stars, last pushed 2d ago), licensed MIT. It adds 65 tokens to every session and 370 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 2026-08-31.
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