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 aj-geddes/useful-ai-prompts --skill mobile-offline-supportgit clone --depth 1 https://github.com/aj-geddes/useful-ai-promptsWrote 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/aj-geddes/useful-ai-prompts/mobile-offline-support)<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/mobile-offline-support"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/mobile-offline-support/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/aj-geddes/useful-ai-prompts/mobile-offline-support"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/mobile-offline-support.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
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 | $0.00034 | $0.00565 |
| Opus 5 | $0.00017 | $0.00282 |
| Sonnet 5 | $0.00007 | $0.00113 |
| Haiku 4.5 | $0.00003 | $0.00056 |
Grade A, and why
mobile-offline-support 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 8d 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 — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mobile Offline Support
Table of Contents
Overview
Design offline-first mobile applications that provide seamless user experience regardless of connectivity.
When to Use
- Building apps that work without internet connection
- Implementing seamless sync when connectivity returns
- Handling data conflicts between device and server
- Reducing server load with intelligent caching
- Improving app responsiveness with local storage
Quick Start
Minimal working example:
import AsyncStorage from '@react-native-async-storage/async-storage';
import NetInfo from '@react-native-community/netinfo';
class StorageManager {
static async saveItems(items) {
try {
await AsyncStorage.setItem(
'items_cache',
JSON.stringify({ data: items, timestamp: Date.now() })
);
} catch (error) {
console.error('Failed to save items:', error);
}
}
static async getItems() {
try {
const data = await AsyncStorage.getItem('items_cache');
return data ? JSON.parse(data) : null;
} catch (error) {
console.error('Failed to retrieve items:', error);
return null;
}
}
// ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| React Native Offline Storage | React Native Offline Storage |
| iOS Core Data Implementation | iOS Core Data Implementation |
| Android Room Database | Android Room Database |
Best Practices
✅ DO
- Implement robust local storage
- Use automatic sync when online
- Provide visual feedback for offline status
- Queue actions for later sync
- Handle conflicts gracefully
- Cache frequently accessed data
- Implement proper error recovery
- Test offline scenarios thoroughly
- Use compression for large data
- Monitor storage usage
What ships with it
4 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.
- 8d ago First seen · 101 lines · 34 tokens per session scan A 9ff606a3b527
mobile-offline-support is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (338 stars, last pushed 6mo ago), licensed MIT. It adds 34 tokens to every session and 565 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 2026-09-03.
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