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Android Persistence Standards — measured AI agent skill | DecimalAI

hoangnguyen0403/android-persistence

SkillScore100Maintained

Implement Room schemas and DataStore preferences with proper async patterns in Android. Use when the primary task is storage schema, DAO, migration, or preference isolation; defer auth-token/security storage, any CoroutineWorker/WorkManager task, Hilt graph wiring, and cache-policy design.

by hoangnguyen0403

Links this skill to your agents and keeps it current with the author’s updates.

Automatic

Coding pack

decimalai skills pull hoangnguyen0403-android-persistence

Get this skill — curl · raw file

curl -fsSL https://app.decimal.ai/s/hoangnguyen0403-android-persistence/SKILL.md

Raw file: /s/hoangnguyen0403-android-persistence/SKILL.md ↗ · machine-readable summary at /s/hoangnguyen0403-android-persistence.json ↗

In productionGlobal

how this skill behaves on real traffic · last 30 days

No production data for this skill yet — usage numbers appear here once agents start running it.

Anonymized aggregate across every org using this skill — proof from real production use, not a demo.

Does this skill help? · Benchmark: with vs. withoutsign in to run this on your agents

22 test cases from the publisher’s eval.yaml · each run twice on gemini-3.6-flash — with the skill injected, then without · last run 7d ago

Yes — +9% lift-28% tokens0% turns100% of whole cases pass with skill (22/22)

Test case	Without → With	Effect	Δ tokens	Δ turns
case-11	✗→✓	▲ Improved	-37%	0%
case-17	✗→✓	▲ Improved	44%	0%
case-01	✓→✓	＝ Same ✓	-21%	0%
case-02	✓→✓	＝ Same ✓	-48%	0%
case-03	✓→✓	＝ Same ✓	-33%	0%

Showing 5 of 22 cases

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/1/2026

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

HoangNguyen0403 / agent-skills-standard

skills/android/android-persistence/SKILL.md

View on GitHub ↗

License Apache-2.0Imported 8/1/2026Version v1Bundled 1 file

Skill contents

references/

SKILL.md

Android Persistence Standards

Priority: P0 (CRITICAL)

1. Configure Room Database

Return Flow<List<T>> for queries, use suspend for Write/Insert.
Keep @Entity data classes simple. Map to Domain models in Repository.
Use @Transaction for multi-table queries (Relations).

See DAO templates for Room DAO patterns.

2. Migrate to DataStore

Replace SharedPreferences with ProtoDataStore (type-safe) or PreferencesDataStore.
Inject singleton DataStore instance via Hilt.

See DAO templates for DataStore migration patterns.

Anti-Patterns

No IO on Main Thread: Room handles dispatchers, but verify Flow collected off-main.
No @Entity in UI Layer: Map to Domain or UI models in Repository.

References

DAO Templates

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