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 HoangNguyen0403/agent-skills-standard --skill android-legacy-securitygit clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standardWrote 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/hoangnguyen0403/agent-skills-standard/android-legacy-security)<a href="https://agentmods.dev/skills/hoangnguyen0403/agent-skills-standard/android-legacy-security"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/android-legacy-security/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/hoangnguyen0403/agent-skills-standard/android-legacy-security"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/android-legacy-security.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 | $0.00053 | $0.00442 |
| Opus 5 | $0.00026 | $0.00221 |
| Sonnet 5 | $0.00011 | $0.00088 |
| Haiku 4.5 | $0.00005 | $0.00044 |
Grade A, and why
android-legacy-security 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.
What it actually says
Android Legacy Security Standards
Priority: P0 (CRITICAL)
1. Secure Intents and Components
- Set
android:exported="false"for all internal Activities/Services unless needed for deep links. - Verify
resolveActivitybefore starting implicit intents. - Treat all incoming Intent extras as untrusted — validate all schema/data types.
See hardening examples for manifest and component restrictions.
2. Lock Down WebViews
- Default to
javaScriptEnabled = false. UseWebViewClientandWebChromeClientto restrict navigation. - Disable
allowFileAccessandallowFileAccessFromFileURLsto prevent local file theft via XSS. - If using
@JavascriptInterface(API 17+), strictly limit exposed API surface.
See hardening examples for WebView lockdown patterns.
3. Protect Storage and Files
- NEVER expose
file://URIs. UseFileProviderto generatecontent://URIs with temporary permissions. - Use
EncryptedSharedPreferencesfor auth tokens and PII. Never use legacy public-read file modes. - Use
NetworkSecurityConfigto disablecleartextTrafficPermittedand implement certificate pinning.
Anti-Patterns
- No Implicit Intents Internally: Use explicit intents with component class name.
- No Public Read Modes: Never expose SharedPreferences or files with global read access.
References
What ships with it
2 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.
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 · 50 lines · 53 tokens per session scan A 8c0433780309
android-legacy-security is a skill published in the GitHub repository HoangNguyen0403/agent-skills-standard (565 stars, last pushed 3d ago), licensed MIT. It adds 53 tokens to every session and 442 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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