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 GDvega/super-android-kotlin-firebase-skill --skill security-privacygit clone --depth 1 https://github.com/GDvega/super-android-kotlin-firebase-skillWrote 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/gdvega/super-android-kotlin-firebase-skill/security-privacy)<a href="https://agentmods.dev/skills/gdvega/super-android-kotlin-firebase-skill/security-privacy"><img src="https://agentmods.dev/badge/skills/gdvega/super-android-kotlin-firebase-skill/security-privacy/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/gdvega/super-android-kotlin-firebase-skill/security-privacy"><img src="https://agentmods.dev/badge/skills/gdvega/super-android-kotlin-firebase-skill/security-privacy.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 | $0.00038 | $0.00602 |
| Opus 5 | $0.00019 | $0.00301 |
| Sonnet 5 | $0.00008 | $0.00120 |
| Haiku 4.5 | $0.00004 | $0.00060 |
Grade A, and why
security-privacy 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 10d 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 — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Purpose
Reduce real security and privacy risks in Android/Firebase apps.
When to use
- Auditing sensitive data handling.
- Reviewing Firebase rules.
- Checking secrets, logs or permissions.
- Adding biometric or local encryption flows.
Inputs to inspect
- Data classification and threat model.
- Rules files and storage paths.
- Logs, analytics and Crashlytics usage.
- Permissions and local storage.
Required workflow
- Classify data and trust boundaries.
- Search for secrets and sensitive logs.
- Review Firebase rules and Android permissions.
- Propose least-privilege fixes.
- Add tests or manual verification steps.
Rules
- Never exfiltrate or print secrets.
- No open production rules.
- Do not rely on client-only authorization.
- Do not log PII, tokens or sensitive health/financial data.
- Use encryption only with a clear threat model.
Related existing skills
Local skills to invoke
- firebase-core
- firestore
- firebase-auth
- code-review-refactor
- testing
External companion skills to use when installed
Do not assume these companion skills are installed. Prefer the local skills above first, then consult Companion Skills for install and verification commands.
- firebase/agent-skills — use for deeper Firebase product, Firestore, Security Rules or emulator workflow guidance when installed.
Files commonly touched
firestore.rulesdatabase.rules.jsonstorage.rulesAndroidManifest.xmllogging/analytics codelocal storage code
Commands to validate
git grep -n "apiKey\|secret\|password\|token"
firebase emulators:exec "npm test"
./gradlew lint
./gradlew test
Common mistakes to avoid
- Putting private keys in BuildConfig.
- Treating Firebase API keys as authorization.
- Logging user identifiers unnecessarily.
- Opening rules for convenience.
Checklist
- Secrets not committed.
- Rules least-privilege.
- Logs safe.
- Permissions minimal.
- Risks documented.
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.
- 10d ago First seen · 103 lines · 38 tokens per session scan A c54408d35cc1
security-privacy is a skill published in the GitHub repository GDvega/super-android-kotlin-firebase-skill (2 stars, last pushed 2mo ago), licensed MIT. It adds 38 tokens to every session and 602 once invoked, about $0.0002 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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