offline-first-strategy

offline-first-strategy is a skill for Claude Code, Codex from almasumdev/awesome-mobile-agent-skills. It costs 50 tokens per session (1,374 once invoked), scanned A, original, no licence file.

A guide to offline-first mobile apps, which keep useful data and actions available when the device has no internet connection. It explains how the device and server share responsibility for storing, reading, and updating data.

In plain words
What is it for?
Use it to plan caching, define which source is authoritative, design offline reads and writes, and investigate synchronization problems.
Why use it?
It helps prevent apps from becoming unusable during outages or weak connections. It also helps diagnose data that is old, inconsistent, or updated differently on the device and server.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to plan caching, define which source is authoritative, design offline reads and writes, and investigate synchronization problems.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/almasumdev/awesome-mobile-agent-skills/offline-first-strategy
Install

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.

Any agent
npx skills add almasumdev/awesome-mobile-agent-skills --skill offline-first-strategy
Clone the repo
git clone --depth 1 https://github.com/almasumdev/awesome-mobile-agent-skills

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for offline-first-strategy

README.md
[![agentmods](https://agentmods.dev/badge/skills/almasumdev/awesome-mobile-agent-skills/offline-first-strategy/github.svg)](https://agentmods.dev/skills/almasumdev/awesome-mobile-agent-skills/offline-first-strategy)
Your own site
<a href="https://agentmods.dev/skills/almasumdev/awesome-mobile-agent-skills/offline-first-strategy"><img src="https://agentmods.dev/badge/skills/almasumdev/awesome-mobile-agent-skills/offline-first-strategy/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.

agentmods 80×15 button for offline-first-strategy

Your own site · 80×15
<a href="https://agentmods.dev/skills/almasumdev/awesome-mobile-agent-skills/offline-first-strategy"><img src="https://agentmods.dev/badge/skills/almasumdev/awesome-mobile-agent-skills/offline-first-strategy.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,374 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00050 $0.01374
Opus 5 $0.00025 $0.00687
Sonnet 5 $0.00010 $0.00275
Haiku 4.5 $0.00005 $0.00137

Measured 9d ago against content hash f66990fe5a3d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

offline-first-strategy 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 9d 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.

.github/skills/offline/offline-first-strategy/SKILL.md · 152 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

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.

  1. 9d ago First seen · 152 lines · 50 tokens per session scan A f66990fe5a3d

Subscribe to this mod's changes

offline-first-strategy is a skill published in the GitHub repository almasumdev/awesome-mobile-agent-skills (1 stars, last pushed 4mo ago), with no licence file. It adds 50 tokens to every session and 1,374 once invoked, about $0.0003 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 2026-09-01.

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