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 ashermahonin/agentic-skills --skill security-mobile-masvsgit clone --depth 1 https://github.com/ashermahonin/agentic-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/ashermahonin/agentic-skills/security-mobile-masvs)<a href="https://agentmods.dev/skills/ashermahonin/agentic-skills/security-mobile-masvs"><img src="https://agentmods.dev/badge/skills/ashermahonin/agentic-skills/security-mobile-masvs/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/ashermahonin/agentic-skills/security-mobile-masvs"><img src="https://agentmods.dev/badge/skills/ashermahonin/agentic-skills/security-mobile-masvs.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 | $0.00069 | $0.00784 |
| Opus 5 | $0.00034 | $0.00392 |
| Sonnet 5 | $0.00014 | $0.00157 |
| Haiku 4.5 | $0.00007 | $0.00078 |
Grade A, and why
security-mobile-masvs 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 — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Security: Mobile MASVS
Purpose
Review native iOS and Android security against the current OWASP MASVS requirements. Cover device storage, platform APIs, permissions, WebViews, signing, privacy, and the resilience controls justified by the threat model.
Scope and evidence
- Read
references/masvs-checklist.md. - Pull the platform matrix from
platform-detector: iOS/Android versions, distribution channel, SDKs, backend/API dependencies, auth flow, and privacy region. - Pull mobile architecture, permissions, deep links, local storage, crypto, networking, WebView usage, signing/notarization, and CI build artifacts. Read-only unless a fix has been assigned.
- Use Context7 MCP for current Apple, Android, OWASP MASVS/MASTG, app-store policy, SDK, and framework security guidance.
Assessment
- Build a mobile attack-surface inventory: storage, credentials, biometrics, network, IPC/deep links, WebViews, SDKs, telemetry, permissions, signing, update flow, and anti-tamper expectations.
- For each MASVS family, mark Pass, Concern, Fail, or Out-of-scope with evidence paths and test commands.
- Run platform-specific checks: Android manifest/exported components, cleartext traffic, backup policy, Play Integrity/signing; iOS entitlements, keychain access groups, ATS, associated domains, jailbreak assumptions.
- Cross-check backend/API findings with
security-owasp-web, dependency findings withcve-zero-day-scanner, and secrets/signing keys withsecurity-secrets. - For Concern/Fail, name the exploit path, affected platform, blast radius, mitigation, owner, and verification test.
- Produce a release-gate verdict: Go, Conditional, or Hold.
Safety rules
- Use Context7 MCP for current MASVS/MASTG, Apple, Android, store-policy, SDK, and framework security guidance.
- Keep a decision trace: tested build, platform versions, store channel, source docs, evidence paths, skipped checks, and accepted risks.
- Refuse to mark a MASVS family Pass without an evidence path and a verification step.
- Escalate before release if credentials, payments, health data, child data, or production write paths are exposed on device.
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 · 59 lines · 69 tokens per session scan A 9e33ad9d0015
security-mobile-masvs is a skill published in the GitHub repository ashermahonin/agentic-skills (10 stars, last pushed 16d ago), licensed MIT. It adds 69 tokens to every session and 784 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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