Using Efficient Effects

Q: What is a Claude Code skill and how does the Using Efficient Effects skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Using Efficient Effects is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: general-misc · Last updated: 2026-05-27

Use this skill to choose the cheapest correct effect API in Jetpack Compose — `LaunchedEffect`, `DisposableEffect`, `SideEffect`, `rememberUpdatedState`, and skydoves/compose-effects' `RememberedEffect` and `ViewModelStoreScope`. Covers stale-callback bugs in long-lived `LaunchedEffect`, setup/teardown for non-coroutine subscribers, avoiding a coroutine scope just to react to a key change, and per-row ViewModels in a `LazyColumn`. Trigger when the user mentions LaunchedEffect, DisposableEffect, RememberedEffect, SideEffect, rememberUpdatedState, ViewModelStoreScope, effect restarts unexpectedly, leaked listener, or per-item ViewModel.

About this skill (catalog notes)

Using Efficient Effects includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); a dedicated installation section; 10 code blocks for direct copy-paste. At roughly 1,564 words the SKILL.md is on the longer end of the catalog distribution.

License: Apache-2.0
Original author: skydoves
Indexed lastmod: 2026-05-27
Catalog position: General · general-misc
Indexed related skills: 10

How Using Efficient Effects fits the catalog

Using Efficient Effects sits in the General category under the general-misc sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Compose ships three effect APIs by default: LaunchedEffect (coroutine, restarts on key change), DisposableEffect (setup/teardown with a cleanup block), and SideEffect (runs on every successful composition). The skydoves/compose-effects library adds RememberedEffect — a non-coroutine analog of LaunchedEffect. Picking the wrong API wastes a coroutine scope, leaks a listener, or silently drops the latest version of a callback. This skill is the decision tree.

What this skill does

Using Efficient Effects is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/using-efficient-effects/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Using Efficient Effects Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 93,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/using-efficient-effects
curl -L https://claudskills.com/skills/using-efficient-effects/SKILL.md \
  -o ~/.claude/skills/using-efficient-effects/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/using-efficient-effects/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/using-efficient-effects/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\using-efficient-effects\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Using Efficient Effects Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/using-efficient-effects/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Using Efficient Effects skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Using Efficient Effects skill?

Use Using Efficient Effects when your Claude Code task falls under the General category — specifically in the general misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Using Efficient Effects" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Using Efficient Effects skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Using Efficient Effects is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/skydoves/compose-performance-skills/blob/HEAD/side-effects/using-efficient-effects/SKILL.md
License: Apache-2.0
Author: skydoves

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

skydoves. (2026). Using Efficient Effects [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/using-efficient-effects/

BibTeX

@misc{using-efficient-effects-2026,
  author    = {skydoves},
  title     = {Using Efficient Effects [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/using-efficient-effects/}
}

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