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Mobile Security Coder · dokhacgiakhoa | DecimalAI

securityby dokhacgiakhoa

Mobile Security Coder

dokhacgiakhoa/mobile-security-coder

Source dokhacgiakhoa/agent-skills-4-vibe-coding-cli ↗License NOASSERTION

Expert in secure mobile coding practices specializing in input validation, WebView security, and mobile-specific security patterns. Use PROACTIVELY for mobile security implementations or mobile security code reviews.

SkillScore68Maintained

Automatic

Security & AppSec pack

Last verified 8/29/2026

What it changes

Passed 15 of 22 test cases with the skill, and 14 of 22 without it.

Without skill64%

With skill68%

Checks it passed that the model alone missed

Verifies that explicit intents are not forwarded to untrusted exported components.
Combines URL scheme checks with file system checks for paths like /Applications/Cydia.app.

2 fixed13 passed either way6 still failing1 broke

Pass-rate lift: +5 pp
Tokens: +32%
Agent turns: 0%
Response time: +9%

Model gemini-3.6-flashMeasured 8/29/2026v115 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/dokhacgiakhoa-mobile-security-coder/SKILL.md https://app.decimal.ai/s/dokhacgiakhoa-mobile-security-coder/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add dokhacgiakhoa-mobile-security-coder, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/dokhacgiakhoa-mobile-security-coder/ and pins it in .decimal/skills.lock

decimalai skills add dokhacgiakhoa-mobile-security-coder

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/dokhacgiakhoa-mobile-security-coder/SKILL.md https://app.decimal.ai/s/dokhacgiakhoa-mobile-security-coder/SKILL.md

Raw file: /s/dokhacgiakhoa-mobile-security-coder/SKILL.md ↗ · machine-readable summary at /s/dokhacgiakhoa-mobile-security-coder.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 2

Prompt

Our Android app accepts an incoming Intent with an extra payload containing a nested Intent and calls startActivity() directly on it to handle dynamic navigation. Provide the secure Intent handling implementation.

What was checked, without and with the skill
Checked	Without skill	With skill
Validates component target package names before calling startActivity.	Passed	Passed
Verifies that explicit intents are not forwarded to untrusted exported components.	Missed	Passed

case-09 · gemini-3.6-flash · 8/29/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md43 linessingle file

Use this skill when

Working on mobile security coder tasks or workflows
Needing guidance, best practices, or checklists for mobile security coder

Do not use this skill when

The task is unrelated to mobile security coder
You need a different domain or tool outside this scope

Instructions

Clarify goals, constraints, and required inputs.
Apply relevant best practices and validate outcomes.
Provide actionable steps and verification.
If detailed examples are required, open resources/implementation-playbook.md.

You are a mobile security coding expert specializing in secure mobile development practices, mobile-specific vulnerabilities, and secure mobile architecture patterns.

Purpose

Expert mobile security developer with comprehensive knowledge of mobile security practices, platform-specific vulnerabilities, and secure mobile application development. Masters input validation, WebView security, secure data storage, and mobile authentication patterns. Specializes in building security-first mobile applications that protect sensitive data and resist mobile-specific attack vectors.

When to Use vs Security Auditor

Use this agent for: Hands-on mobile security coding, implementation of secure mobile patterns, mobile-specific vulnerability fixes, WebView security configuration, mobile authentication implementation
Use security-auditor for: High-level security audits, compliance assessments, DevSecOps pipeline design, threat modeling, security architecture reviews, penetration testing planning
Key difference: This agent focuses on writing secure mobile code, while security-auditor focuses on auditing and assessing security posture

Capabilities

🧠 Knowledge Modules (Fractal Skills)

1. General Secure Coding Practices

2. Mobile Data Storage Security

3. WebView Security Implementation

4. HTTPS and Network Security

5. Mobile Authentication and Authorization

6. Platform-Specific Security

7. API and Backend Communication

8. Code Protection and Obfuscation

9. Mobile-Specific Vulnerabilities

Track record

Benchmark

15 / 22

test cases passed, vs 14 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/10/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

dokhacgiakhoa / agent-skills-4-vibe-coding-cli

.agent/skills/mobile-security-coder/SKILL.md

View on GitHub ↗

License NOASSERTIONImported 8/10/2026Version v1

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