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 Omar-Obando/qwen-orchestrator --skill offline-first-developmentgit clone --depth 1 https://github.com/Omar-Obando/qwen-orchestratorWrote 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/omar-obando/qwen-orchestrator/offline-first-development)<a href="https://agentmods.dev/skills/omar-obando/qwen-orchestrator/offline-first-development"><img src="https://agentmods.dev/badge/skills/omar-obando/qwen-orchestrator/offline-first-development/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/omar-obando/qwen-orchestrator/offline-first-development"><img src="https://agentmods.dev/badge/skills/omar-obando/qwen-orchestrator/offline-first-development.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 | $0.00051 | $0.02245 |
| Opus 5 | $0.00026 | $0.01123 |
| Sonnet 5 | $0.00010 | $0.00449 |
| Haiku 4.5 | $0.00005 | $0.00225 |
Grade A, and why
offline-first-development scanned grade A with 1 finding 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
return fetch(event.request).then((response) => { How it starts
The opening of the file, as written. The whole thing — 352 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Offline-First Development Skill — Mobile Engineer
Overview
This skill provides comprehensive guidance for implementing offline-first applications. It covers local storage management, data synchronization, conflict resolution, offline UI patterns, and offline state management following offline-first development best practices.
When to Use
Use this skill when:
- Implementing offline-first applications
- Managing local storage (IndexedDB, localStorage)
- Implementing data synchronization
- Handling synchronization conflicts
- Creating offline UI patterns
- Implementing service workers
- Managing offline state
- Creating offline data models
- Implementing offline-first APIs
- Handling network failures
- Creating offline indicators
- Implementing queue for offline actions
- Managing offline data validation
- Creating offline sync strategies
- Implementing conflict resolution
- Managing offline data consistency
- Creating offline-first UX patterns
- Implementing background sync
- Managing offline data caching
- Creating offline-first error handling
- Implementing offline data encryption
- Managing offline storage limits
- Creating offline-first testing
Do NOT use this skill when:
- Writing application business logic (use domain-driven skill)
- Designing database schemas (use database-design skill)
- Writing API endpoint specifications (use api-design skill)
- Performing security audits (use security-auditor skill)
- Writing SQL queries (use sql-best-practices skill)
- Designing multi-page website layouts (use design-system skill)
- Analyzing deployment configurations (use deployment skill)
- Writing documentation (use documentation-best-practices skill)
Offline-First Principles
Core Principles
┌─────────────────────────────────────────────────────────────┐
│ Offline-First Principles │
├─────────────────────────────────────────────────────────────┤
│ 1. Always Available: │
│ - Application works offline │
│ - Core functionality available │
│ - Graceful degradation │
│ │
│ 2. Data Persistence: │
│ - Data stored locally │
│ - Data survives app restart │
│ - Data survives device restart │
│ │
│ 3. Automatic Sync: │
│ - Data syncs when online │
│ - Sync happens automatically │
│ - Sync is transparent to user │
│ │
│ 4. Conflict Resolution: │
│ - Handle offline changes │
│ - Resolve conflicts gracefully │
│ - User awareness of conflicts │
│ │
│ 5. Offline UI: │
│ - Clear offline status │
│ - Offline actions queue │
│ - Offline indicators │
└─────────────────────────────────────────────────────────────┘
What ships with it
1 file 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 · 352 lines · 51 tokens per session scan A b4f70aabcbdb
offline-first-development is a skill published in the GitHub repository Omar-Obando/qwen-orchestrator (49 stars, last pushed 2mo ago), licensed MIT. It adds 51 tokens to every session and 2,245 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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