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/jitrapon/astro-mobile/update-xcodenpx skills add jitrapon/astro-mobile --skill update-xcodegit clone --depth 1 https://github.com/jitrapon/astro-mobileWhat 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 | $0.00202 | $0.03080 |
| Opus 5 | $0.00101 | $0.01540 |
| Sonnet 5 | $0.00040 | $0.00616 |
| Haiku 4.5 | $0.00020 | $0.00308 |
Grade E, and why
update-xcode scanned grade E with 4 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 2d 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
- First run may prompt for an **Apple ID login and/or sudo password — Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
grep -rn "Xcode-" .claude/CLAUDE.md .claude/skills/ios-device-debug/SKILL.md .claude/settings.local.json Enumerates other installed skillsmediumAgent snooping
Other skills' SKILL.md files reveal prompts, capabilities and secrets that should be invisible to peers.
xcode-select -p # the active developer dir grep -rn "Xcode-" .claude/CLAUDE.md .claude/skills/ios-device-debug/SKILL.md .claude/settings.local.json Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
rm -rf .claude/skills/adopt-c-bounds-safety \ The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 2d ago First seen · 229 lines · 202 tokens per session scan E afce84ccb718
update-xcode is a skill published in the GitHub repository jitrapon/astro-mobile (11 stars, last pushed 2d ago), with no licence file. It adds 202 tokens to every session and 3,080 once invoked, about $0.0010 per session on Opus 5. A static security scan graded it E with 4 findings (asks for root, reads agent configuration directories, enumerates other installed skills). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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