Browse reusable Agent Skills, each with a clear purpose and practical guidance.
Assistance with Go and Kotlin interop, VPN architecture, and tunnel building in the BlockAds Android app. Use when adding features to the Go tunnel, working with gomobile, or modifying the VPN service.
Advanced Compose Multiplatform UI patterns for shared composables. Use when working with visual UI components, state management patterns (remember, derivedStateOf, produceState), recomposition optimization (@Stable/@Immutable visual usage), Material3 theming, custom ImageVector icons, or determining whether to share UI in commonMain vs keep platform-specific. Delegates navigation to android-expert/desktop-expert. Complements kotlin-expert (handles Kotlin language aspects of state/annotations).
Platform abstraction decision-making for Amethyst KMP project. Guides when to abstract vs keep platform-specific, source set placement (commonMain, jvmAndroid, platform-specific), expect/actual patterns. Covers primary targets (Android, JVM/Desktop, iOS — all mature) with web/wasm as possible future targets. Integrates with gradle-expert for dependency issues. Triggers on: abstraction decisions ("should I share this?"), source set placement questions, expect/actual creation, build.gradle.kts work, incorrect placement detection, KMP dependency suggestions.
Account state and in-memory event store patterns in Amethyst. Use when working with `Account.kt` (per-user state objects — `kind3FollowList`, `nip65RelayList`, `muteList`, `bookmarkState`, each exposing a `.flow` StateFlow), `LocalCache` (the object-level event store backed by `LargeCache`), `User`/`Note` model classes, or any ViewModel that reads user-specific state. Covers how account events cascade from relay arrival to UI state, how to add a new account-scoped setting, and when to read from `LocalCache` vs subscribe to a StateFlow.
Patterns for extending `amy`, the Amethyst CLI in `cli/`. Use when adding an `amy <verb>` command, touching files under `cli/src/main/kotlin/…/cli/`, wiring a new subcommand into `Main.kt`, writing an interop test script that drives Amy, or extracting logic out of `amethyst/` into `commons/` so a CLI command can call it. Enforces the thin-assembly-layer rule (no Nostr protocol or business logic inside `cli/`), the dual-output contract (text by default, single-line JSON object on stdout under `--json`, exit codes 0/1/2/124), and the extract-from-Android recipe. Complements `nostr-expert` (protocol in Quartz), `kotlin-multiplatform` (expect/actual for extraction), and `feed-patterns` / `account-state` / `relay-client` (where the business logic should end up). NOT for general Nostr or Kotlin work — those have their own skills.
Android platform patterns for the `amethyst/` module. Use when working with (1) Android navigation (Navigation Compose, type-safe routes, bottom nav), (2) runtime permissions (camera, notifications, biometrics), (3) platform APIs (Intent, Context, Activity, ContentResolver), (4) Material3 theming and edge-to-edge UI, (5) AndroidManifest.xml and intent filters, (6) Proguard/R8 and APK optimization, (7) Android lifecycle (ViewModel, collectAsStateWithLifecycle), (8) Coil image loading. Delegates shared composables to compose-expert, build files to gradle-expert, and KMP structure to kotlin-multiplatform.
Signer abstraction patterns in Amethyst. Use when working with event signing, choosing between a local keypair (`NostrSignerInternal`), a remote NIP-46 bunker signer (`NostrSignerRemote`), or a NIP-55 Android external-app signer (`NostrSignerExternal`). Covers the abstract `NostrSigner` base class, `SignerResult` contract, how to wire a new flow that needs to sign events, and the security/UX trade-offs between signer kinds.
Use when writing or reviewing Jetpack Compose layout APIs, modifier parameters, modifier chain construction, hardcoded root layout decisions, or layout wrappers around a single conditional. Technique-layer skill — complements the codebase-specific compose-expert.
Use when writing or reviewing Jetpack Compose code with LaunchedEffect, DisposableEffect, SideEffect, rememberCoroutineScope, rememberUpdatedState, snapshotFlow, snackbar, navigation, focus requests, analytics, or event Flow collection. Technique-layer skill — complements the codebase-specific compose-expert.
Use when designing or reviewing a reusable Jetpack Compose component whose visual regions vary by caller, or when primitive content parameters and boolean shape flags are accumulating. Technique-layer skill — complements the codebase-specific compose-expert.