Agent skill

Koin

by rcosteira79 in rcosteira79/android-skills

MITAuto-check passedMobile

Install Koin

skills CLI

$ npx skills add rcosteira79/android-skills --skill koin -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install rcosteira79/android-skills koin --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/rcosteira79/android-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/android-skills/skills/koin .claude/skills/koin && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "koin" agent skill from https://github.com/rcosteira79/android-skills/tree/main/plugins/android-skills/skills/koin into .claude/skills/koin/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "koin", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/rcosteira79/android-skills/tree/main/plugins/android-skills/skills/koin

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add rcosteira79/android-skills --skill koin -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install rcosteira79/android-skills koin --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/rcosteira79/android-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/android-skills/skills/koin .agents/skills/koin && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "koin" agent skill from https://github.com/rcosteira79/android-skills/tree/main/plugins/android-skills/skills/koin into .agents/skills/koin/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "koin", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add rcosteira79/android-skills --skill koin -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install rcosteira79/android-skills koin --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/rcosteira79/android-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/android-skills/skills/koin .cursor/skills/koin && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "koin" agent skill from https://github.com/rcosteira79/android-skills/tree/main/plugins/android-skills/skills/koin into .cursor/skills/koin/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "koin", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/rcosteira79/android-skills.git --path plugins/android-skills/skills/koin

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add rcosteira79/android-skills --skill koin -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install rcosteira79/android-skills koin --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/rcosteira79/android-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/android-skills/skills/koin .gemini/skills/koin && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "koin" agent skill from https://github.com/rcosteira79/android-skills/tree/main/plugins/android-skills/skills/koin into .gemini/skills/koin/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "koin", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install rcosteira79/android-skills koin

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add rcosteira79/android-skills --skill koin -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/rcosteira79/android-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/android-skills/skills/koin .github/skills/koin && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "koin" agent skill from https://github.com/rcosteira79/android-skills/tree/main/plugins/android-skills/skills/koin into .github/skills/koin/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "koin", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add rcosteira79/android-skills --skill koin -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install rcosteira79/android-skills koin --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/rcosteira79/android-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/android-skills/skills/koin .opencode/skills/koin && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "koin" agent skill from https://github.com/rcosteira79/android-skills/tree/main/plugins/android-skills/skills/koin into .opencode/skills/koin/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "koin", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: koin
GitHub stars: 153
Token cost: ~1.4k tokens
SKILL.md length: 380 words
Files: 1
Skills in repo: 21
Repo updated: Sep 19, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Working with Koin in Android
SKILL.md covers KSP Annotations — the…, KMP source-set layout, Compose: the call-site failure and Scopes, plus 2 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
KMP projects — module declarations with Classic DSL

What it does

Koin is an agent skill from rcosteira79/android-skills. Use when setting up or working with Koin in Android or KMP projects — module declarations with Classic DSL or KSP annotations, ViewModel injection in Compose, scopes, Nav 3 entry providers, application startup, and compile-time verification via verify(). Triggers on Koin, single, factory, koinViewModel, koinInject, parametersOf, startKoin, "KMP DI", "shared DI".

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Mobile. It works with Android. The repository describes itself as: Claude Code skills for Android & KMP development. The licence is MIT.

When your agent uses it

Working with Koin in Android
KMP projects — module declarations with Classic DSL
KSP annotations
ViewModel injection in Compose

Example prompts

“KMP DI”
“shared DI”
“/koin”

What it can do on your machine

Read from SKILL.md and the folder at commit 0f9af5a. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are kotlin).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Koin loads about 1.4k tokens when it runs. Until then it costs about 96 tokens; SKILL.md has 380 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~96
When it runs · the whole SKILL.md, loaded when a task matches: ~1.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from rcosteira79/android-skills at commit 0f9af5a, republished under its MIT licence (© rcosteira79). 380 words, ~1,434 tokens.

Download SKILL.mdSave it as .claude/skills/koin/SKILL.md (or your agent's skills folder).

name: koin
description: Use when setting up or working with Koin in Android or KMP projects — module declarations with Classic DSL or KSP annotations, ViewModel injection in Compose, scopes, Nav 3 entry providers, application startup, and compile-time verification via `verify()`. Triggers on Koin, `single`, `factory`, `koinViewModel`, `koinInject`, `parametersOf`, `startKoin`, "KMP DI", "shared DI".

Koin Dependency Injection (Android and KMP)

Pragmatic Kotlin DI. Koin vs Hilt: Koin runs in commonMain (Hilt doesn't) and verifies the graph via verify() instead of codegen; Hilt is Android-only with codegen + deep Jetpack integration (@HiltViewModel / hiltViewModel()). This reference covers the traps and boundaries, not the Classic DSL basics (single / factory / scoped / viewModel { } with get() resolution and runtime params, koinViewModel / koinInject, startKoin { androidLogger(); androidContext(this@MyApp); modules(...) }). Related: android-skills:kmp-ktor, android-skills:android-data-layer. Deps via koin-bom: koin-core, koin-android, koin-androidx-compose, koin-compose-viewmodel (KMP), koin-compose-viewmodel-navigation (Nav 3), koin-test, + optional koin-annotations / koin-ksp-compiler.

KSP Annotations — the generated-module accessor

@Module @ComponentScan discovers annotated classes and emits a module you pass to startKoin as UserModule().module — the generated .module extension on the annotated class is the part most often missed. Pick one style per module (don't mix Classic DSL + annotations inside a single module; switching between modules is fine).

kotlin

@Single class UserRepositoryImpl(private val service: UserService) : UserRepository
@Factory class UserFormValidator
@KoinViewModel class UserDetailViewModel(
    @InjectedParam private val userId: String,
    private val repository: UserRepository,
) : ViewModel()
@Module @ComponentScan("com.example.feature.user") class UserModule
// startKoin { modules(UserModule().module) }

KMP source-set layout

Most bindings live in commonMain; platform-typed ones (HTTP engine, Context, Keychain) go behind expect val platformModule: Module with an actual per platform (mirrors android-skills:kmp-ktor's engine pattern). iOS startup: call InitKoinKt.doInitKoin(config: nil) from iOSApp.init() — Swift reserves init, hence the do prefix.

kotlin

// commonMain
expect val platformModule: Module
// androidMain: actual = module { single<HttpClientEngine> { OkHttp.create() }; single<TokenStorage> { DataStoreTokenStorage(get()) } }
// iosMain:     actual = module { single<HttpClientEngine> { Darwin.create() }; single<TokenStorage> { KeychainTokenStorage() } }

Compose: the call-site failure

koinViewModel / koinInject require koin-androidx-compose (Android) or koin-compose-viewmodel (KMP). Without that artifact the call compiles but fails at the call site — koin-core knows nothing about ViewModel or the Compose runtime. For testability, default composable params to koinInject(): fun Screen(service: AnalyticsService = koinInject()).

kotlin

val vm: UserDetailViewModel = koinViewModel { parametersOf(userId) }
// keyed per entity: koinViewModel(key = "detail_$userId", parameters = { parametersOf(userId) })

Show full SKILL.md (157 more words)Show less

Scopes

Survives configuration changes (the common case) → activityRetainedScope — backed by the Activity's retained ViewModel, so it lives across rotation and closes on real finish. Declare with activityRetainedScope { } (or @ActivityRetainedScope) and access via AndroidScopeComponent; do not hand-roll createScope / close for this case.

kotlin

val checkoutModule = module {
    activityRetainedScope {                 // retained across config changes
        scoped { CheckoutCart() }
        scoped { CheckoutPricing(get()) }
    }
}
class CheckoutActivity : AppCompatActivity(), AndroidScopeComponent {
    override val scope: Scope by activityRetainedScope()
    private val cart: CheckoutCart by inject()
}

Custom lifetime not tied to an Activity (e.g. a multi-step flow keyed by an order id) → declare a scope<T> and own its lifecycle: getKoin().createScope<CheckoutFlow>("checkout-$orderId"), resolve with scope.get(), and scope.close() when the flow ends.

Nav 3

koinEntryProvider() resolves ViewModels per destination; register destinations inside modules, not inline at the NavDisplay site.

kotlin

val navigationModule = module {
    navigation<HomeRoute> { HomeScreen(viewModel = koinViewModel()) }
    navigation<DetailRoute> { route -> DetailScreen(viewModel = koinViewModel { parametersOf(route.id) }) }
}
NavDisplay(backStack = backStack, onBack = { backStack.removeLastOrNull() }, entryProvider = koinEntryProvider())

Testing — `verify()` / `checkModules()`

Walks each declaration's constructor and confirms every dependency is declared — missing bindings become test failures instead of a runtime NoDefinitionFoundException (recovering one of Hilt's advantages). Run it in CI. For constructor params resolved at runtime (e.g. SavedStateHandle), pass extraTypes or verify() false-fails. Override real bindings with fakes (e.g. Ktor MockEngine — see android-skills:kmp-ktor). KoinTestRule (JUnit 4) / KoinTestExtension (JUnit 5) installs a context per test.

kotlin

class ModuleVerificationTest : KoinTest {
    @Test fun `all modules resolve cleanly`() {
        koinApplication { modules(appModule, networkModule, platformModule) }.checkModules()
    }
    // Per-module with runtime-resolved types:
    // featureModule.verify(extraTypes = listOf(SavedStateHandle::class))
}

Files

Just SKILL.md in plugins/android-skills/skills/koin of rcosteira79/android-skills.

Open the folder on GitHubat commit 0f9af5a

Compare with similar skills

Koin next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Koin compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Koin this skillrcosteira79/android-skills	153	—	~1.4k	Automated safety check: Pass	MIT	20 days ago
Compose Multiplatform Patternsmonta-app/ocpp-emulator	180	5 repos	~2k	Automated safety check: Pass	Apache-2.0	today
Phone HarnessShawnPana/phone-harness	3.2k	—	~4.3k	Automated safety check: Pass	MIT	yesterday
Stylesarindamxd/camerax-android	132	4 repos	~2.3k	Automated safety check: Pass	Apache-2.0	7 days ago
Verified Emailarindamxd/camerax-android	132	4 repos	~4.7k	Automated safety check: Pass	Apache-2.0	7 days ago
Argent Metro Debuggerbbplayer-app/BBPlayer	1.2k	—	~3.4k	Automated safety check: Pass	MIT	yesterday

Similar skills

Compose Multiplatform Patterns
monta-app/ocpp-emulator
Compose Multiplatform and Jetpack Compose patterns for KMP projects — state management, navigation, theming, performance, and platform-specific UI.
180 GitHub starsUsed in 5 repos~2k tokens
MobileAuto-check passed
Phone Harness
ShawnPana/phone-harness
Control the user's phone — an iPhone through the Mac's iPhone Mirroring window, an Android over adb, or a rented cloud Android: open apps, tap, type, swipe, read the screen.
3.2k GitHub stars~4.3k tokensUpdated yesterday
MobileAuto-check passed
Styles
arindamxd/camerax-android
A skill your agent uses to integrate the Jetpack Compose Styles API into an Android project.
132 GitHub starsUsed in 4 repos~2.3k tokens
MobileAuto-check passed
Verified Email
arindamxd/camerax-android
Provides a complete workflow for implementing verified email retrieval on Android Credential Manager API.
132 GitHub starsUsed in 4 repos~4.7k tokens
MobileAuto-check passed
Argent Metro Debugger
bbplayer-app/BBPlayer
Debug a JS runtime via CDP using argent debugger tools. An agent skill from bbplayer-app/BBPlayer.
1.2k GitHub stars~3.4k tokensUpdated yesterday
MobileAuto-check passed
Android XML Resource
afkT/DevUtils
统一 Android XML 资源命名：layout、drawable、mipmap、color、values、id 的前缀与 snakecase 规则；把颜色/圆角/描边/状态编码进文件名（bg、border、textcolor…selector）。
1.6k GitHub stars~1.3k tokensUpdated 1 mo ago
MobileAuto-check passed

More from rcosteira79/android-skills

All 21 skills in this repo

Jetpack Compose and Multiplatform Expert
rcosteira79/android-skills
Guides writing correct, performant Compose and Compose Multiplatform UI across Android, desktop, iOS and web, from state and animation to design-to-code and crash fixes.
153 GitHub stars~2.6k tokensUpdated 20 days ago
Auto-check passed
Kotlin Multiplatform Boundaries
rcosteira79/android-skills
Helps choose how common Kotlin Multiplatform code reaches platform APIs: expect/actual, a common interface with platform bindings, or separate platform screens.
153 GitHub stars~1.5k tokensUpdated 20 days ago
Auto-check passed
Android Data Layer and Room in KMP
rcosteira79/android-skills
Sets out the repository pattern's error-propagation model for Android and Kotlin Multiplatform, plus the Room setup for commonMain.
153 GitHub stars~1.2k tokensUpdated 20 days ago
Auto-check passed
Android Debugging
rcosteira79/android-skills
Android and KMP debugging techniques for crashes, ANRs, memory leaks, R8 traces, Gradle failures and Compose recomposition, built on finding the root cause first.
153 GitHub stars~2.6k tokensUpdated 20 days ago
Auto-check passed
Android and KMP Baseline
rcosteira79/android-skills
Sets house defaults for Android and Kotlin Multiplatform work and routes to the right specialized skill for Compose, networking, testing or build tooling.
153 GitHub stars~3k tokensUpdated 20 days ago
Auto-check passed
Android Gradle Build Logic
rcosteira79/android-skills
Sets up Android Gradle convention plugins in a build-logic composite build, including the version catalog wiring and shared configuration that are easy to get wrong.
153 GitHub stars~959 tokensUpdated 20 days ago
Auto-check passed

Works with

Android

Questions about Koin

What does Koin do?

A skill your agent uses when setting up or working with Koin in Android or KMP projects — module declarations with Classic DSL or KSP annotations, ViewModel injection in Compose, scopes, Nav 3 entry…. Koin is an agent skill from rcosteira79/android-skills. Use when setting up or working with Koin in Android or KMP projects — module declarations with Classic DSL or KSP annotations, ViewModel injection in Compose, scopes, Nav 3 entry providers, application startup, and compile-time verification via verify().

When should I use Koin?

Koin fits situations like: working with Koin in Android; KMP projects — module declarations with Classic DSL; KSP annotations; viewModel injection in Compose.

How do I install Koin in Claude Code?

Run `npx skills add rcosteira79/android-skills --skill koin -a claude-code`. Or copy the skill folder (plugins/android-skills/skills/koin in rcosteira79/android-skills) into .claude/skills/koin in your project. Claude Code loads it when a task matches its description.

How do I install Koin in Codex?

Run `npx skills add rcosteira79/android-skills --skill koin -a codex`. Or copy the skill folder (plugins/android-skills/skills/koin in rcosteira79/android-skills) into .agents/skills/koin in your project. Codex loads it when a task matches its description.

Can I use Koin in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add rcosteira79/android-skills --skill koin -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/koin, .gemini/skills/koin, .github/skills/koin and .opencode/skills/koin in your project.

What does Koin need to run?

SKILL.md names no scripts, command-line tools or credentials: Koin is instructions for the agent only.

Does Koin access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Koin safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Koin use?

Koin is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Koin use?

About 1.4k tokens (SKILL.md is roughly 5.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Koin?

Skills that share tags, products or a category with Koin: Compose Multiplatform Patterns (monta-app/ocpp-emulator, 180 stars), Phone Harness (ShawnPana/phone-harness, 3.2k stars), Styles (arindamxd/camerax-android, 132 stars) and Verified Email (arindamxd/camerax-android, 132 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Koin?

rcosteira79 (a GitHub user) maintains it in rcosteira79/android-skills, which has 153 GitHub stars. The repository holds 21 skills in this directory. The repository was last updated on September 19, 2026.

Source: rcosteira79/android-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Koin

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Koin Dependency Injection (Android and KMP)

KSP Annotations — the generated-module accessor

KMP source-set layout

Compose: the call-site failure

Scopes

Nav 3

Testing — verify() / checkModules()

Files

Compare with similar skills

Similar skills

More from rcosteira79/android-skills

Related

Questions about Koin

Testing — `verify()` / `checkModules()`