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 Poorgramer-Zack/dart-expert-skills --skill flutter-dbgit clone --depth 1 https://github.com/Poorgramer-Zack/dart-expert-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/poorgramer-zack/dart-expert-skills/flutter-db)<a href="https://agentmods.dev/skills/poorgramer-zack/dart-expert-skills/flutter-db"><img src="https://agentmods.dev/badge/skills/poorgramer-zack/dart-expert-skills/flutter-db/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/poorgramer-zack/dart-expert-skills/flutter-db"><img src="https://agentmods.dev/badge/skills/poorgramer-zack/dart-expert-skills/flutter-db.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 | $0.00042 | $0.00572 |
| Opus 5 | $0.00021 | $0.00286 |
| Sonnet 5 | $0.00008 | $0.00114 |
| Haiku 4.5 | $0.00004 | $0.00057 |
Grade A, and why
flutter-db 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 11d 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 — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Database Architecture Guide (Flutter)
Goal
Implement robust, scalable, and secure local persistence strategies for Flutter applications. This skill ensures developers choose the optimal storage engine—balancing simple key-value settings, encrypted sensitive data, high-performance NoSQL object stores, and complex relational databases.
Process
🚀 High-Level Workflow
Selecting the right persistence layer depends on data sensitivity, complexity, and relationship depth.
Phase 1: Key-Value Persistence (Simple & Secure)
Use lightweight stores for settings and sensitive credentials.
- Shared Preferences Guide - Non-sensitive settings and flags using static wrappers.
- Secure Storage Guide - Encrypted storage for tokens and passwords.
Phase 2: High-Performance Object Storage (NoSQL)
For local-first apps requiring fast read/write of large datasets without complex relations.
- Hive CE (Synchronous NoSQL) - Blazing fast object store for local caching and offline data.
Phase 3: Complex Relational Schemas (SQL)
For apps requiring strict data integrity, transactions, and complex queries.
- Drift (Reactive SQL) - Type-safe relational database built on top of SQLite.
📚 Documentation Library
Refer to these specialized resources to implement your chosen persistence strategy:
- 🗄️ Database Architecture Overview
- ⚙️ Shared Preferences
- 🔐 Secure Storage (Encrypted)
- 🐝 Hive CE Best Practices
- 🐘 Drift (SQL) Best Practices
Constraints
- Type Safety: Prohibit raw
dynamicdata access. Always use generated classes (Drift) or typed static wrappers (SharedPreferences/SecureStorage). - Sensitivity Awareness: Force use of
Secure Storagefor any tokens, passwords, or PII. Never store sensitive data in SharedPreferences or unencrypted Hive boxes. - Singleton Access: Access storage instances via DI (Riverpod) or strictly defined static classes to prevent key fragmentation.
- Performance Balance: Use NoSQL (Hive) for high-frequency reads and SQL (Drift) for complex relationships. Don't over-engineer simple apps with SQL.
What ships with it
5 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.
- 11d ago First seen · 47 lines · 42 tokens per session scan A 76f61c35ace7
flutter-db is a skill published in the GitHub repository Poorgramer-Zack/dart-expert-skills (7 stars, last pushed 1mo ago), licensed MIT. It adds 42 tokens to every session and 572 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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