android-coroutines

Guidance for writing production Android apps in Kotlin using coroutines, a way to run tasks without blocking the app. It covers how tasks follow clear lifetimes, work with screen lifecycles, and handle changing data streams.

In plain words
What is it for?
Use it when implementing or reviewing Kotlin coroutine code in Android apps, especially screen-related work and reactive data updates.
Why use it?
It helps avoid background tasks that keep running after a screen is gone or leave app state inconsistent. It also provides patterns for coordinating asynchronous work.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/maxrave-dev/simpmusic/android-coroutines
Any agent
npx skills add maxrave-dev/SimpMusic --skill android-coroutines
Clone the repo
git clone --depth 1 https://github.com/maxrave-dev/SimpMusic

Made for: Claude Code, Codex.

Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,281 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00029 $0.01281
Opus 5 $0.00015 $0.00641
Sonnet 5 $0.00006 $0.00256
Haiku 4.5 $0.00003 $0.00128

Measured 3d ago against content hash 05af55ae8d5b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

android-coroutines 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 3d 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.

.claude/skills/android-coroutines/SKILL.md · 140 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

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. 3d ago First seen · 140 lines · 29 tokens per session scan A 05af55ae8d5b

Subscribe to this mod's changes

android-coroutines is a skill published in the GitHub repository maxrave-dev/SimpMusic (10,880 stars, last pushed 2d ago), licensed GPL-3.0. It adds 29 tokens to every session and 1,281 once invoked, about $0.0001 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 2026-08-30.

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