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 ComeOnOliver/skillshub --skill axiom-file-protection-refgit clone --depth 1 https://github.com/ComeOnOliver/skillshubWrote 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/comeonoliver/skillshub/axiom-file-protection-ref)<a href="https://agentmods.dev/skills/comeonoliver/skillshub/axiom-file-protection-ref"><img src="https://agentmods.dev/badge/skills/comeonoliver/skillshub/axiom-file-protection-ref/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/comeonoliver/skillshub/axiom-file-protection-ref"><img src="https://agentmods.dev/badge/skills/comeonoliver/skillshub/axiom-file-protection-ref.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 | $0.00062 | $0.03596 |
| Opus 5 | $0.00031 | $0.01798 |
| Sonnet 5 | $0.00012 | $0.00719 |
| Haiku 4.5 | $0.00006 | $0.00360 |
Grade A, and why
axiom-file-protection-ref 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 9d 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 — 546 lines — stays where its author put it; the contents beside it link to each section on GitHub.
iOS File Protection Reference
Purpose: Comprehensive reference for file encryption and data protection APIs Availability: iOS 4.0+ (all protection levels), latest enhancements in iOS 26 Context: Built on iOS Data Protection architecture using hardware encryption
When to Use This Skill
Use this skill when you need to:
- Protect sensitive user data at rest
- Choose appropriate FileProtectionType for files
- Understand when files are accessible/encrypted
- Debug "file not accessible" errors after device lock
- Implement secure file storage
- Compare Keychain vs file protection approaches
- Handle background file access requirements
Overview
iOS Data Protection provides hardware-accelerated file encryption tied to the device passcode. When a user sets a passcode, every file can be encrypted with keys protected by that passcode.
Key concepts:
- Files are encrypted automatically when protection is enabled
- Encryption keys are derived from device hardware + user passcode
- Files become inaccessible when device is locked (depending on protection level)
- No performance cost (hardware AES encryption)
Protection Levels Comparison
| Level | Encrypted Until | Accessible When | Use For | Background Access |
|---|---|---|---|---|
| complete | Device unlocked | Only while unlocked | Sensitive data (health, finances) | ❌ No |
| completeUnlessOpen | File closed | After first unlock, while open | Large downloads, videos | ✅ If already open |
| completeUntilFirstUserAuthentication | First unlock after boot | After first unlock | Most app data | ✅ Yes |
| none | Never | Always | Public caches, temp files | ✅ Yes |
Detailed Level Descriptions
.complete
Full Description:
"The file is stored in an encrypted format on disk and cannot be read from or written to while the device is locked or booting."
Use For:
- User health data
- Financial information
- Password vaults
- Sensitive documents
- Personal photos (if app requires maximum security)
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.
- 9d ago First seen · 546 lines · 62 tokens per session scan A c86fa83b53d6
axiom-file-protection-ref is a skill published in the GitHub repository ComeOnOliver/skillshub (63 stars, last pushed 2mo ago), licensed MIT. It adds 62 tokens to every session and 3,596 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 2026-09-03.
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