AndroJack MCP vs Real Browser MCP

android_debugger

Parses an Android/Kotlin stacktrace and searches official sources (developer.android.com, issuetracker.google.com) for verified causes and fixes. Paste the full crash log or exception. Returns parsed error class, official explanations, and vetted fixes. Never guess — always ground debugging in official sources.

gradle_dependency_checker

Live version lookup for any Android, Kotlin, or Jetpack library from Google Maven and Maven Central. ALWAYS call this before adding or updating any dependency in build.gradle.kts. This tool exists because AI tools generate stale dependency coordinates. Known failures: wrong Coil group (io.coil-kt vs io.coil-kt.coil3 for Coil 3), missing BOM platform() wrapper for Compose and Firebase, outdated Compose BOM (moves every month), KAPT coordinates when KSP is the current standard, wrong artifact names for Room KMP vs Room Android. Returns: latest stable version, ready-to-paste Kotlin DSL, BOM resolution for managed artifacts, and KMP vs Android-only distinction where relevant. Examples: 'compose', 'hilt', 'room', 'retrofit', 'coil', 'lifecycle', 'coroutines', 'navigation', 'firebase'.

android_api_level_check

Maps Android API levels to version names, codenames, and key feature availability. Returns minSdk guidance and critical API availability warnings. Use this to validate that the APIs you plan to use are available at your project's minSdk. Input can be: an API integer (e.g. '26'), a version name (e.g. 'Android 14'), or a codename (e.g. 'Oreo'). Pass 'all' or 'table' to see the full API level reference table.

kotlin_best_practices

Returns official Kotlin and Android code patterns with ready-to-use snippets and explicit anti-patterns. All snippets are sourced from developer.android.com and kotlinlang.org. Call this when generating coroutine code, StateFlow/LiveData usage, Compose state, Room DAOs, Hilt injection, Navigation, or WorkManager tasks. Available patterns: coroutines-viewmodel, stateflow-ui, compose-state, room-dao, hilt-injection, navigation-compose, workmanager-task, sealed-result. Pass any topic keyword or call with no topic to list all patterns.

material3_expressive

Complete reference for Material 3 Expressive (M3E) — Google's design system GA on Android 16 (Sep 2025). Covers: MaterialExpressiveTheme setup, MotionScheme, new components (ButtonGroup, FloatingToolbar, DockedToolbar, LoadingIndicator, SplitButtonLayout, FABMenu), MaterialShapes + shape morphing, variable font typography, Wear OS M3E, migration from plain M3, and anti-patterns. Call this before building any Compose UI or theming. Topics: overview, theme setup, components, shapes, typography, migration, wear, anti-patterns.

android_permission_advisor

Complete Android permissions reference. Returns type (normal/dangerous/special/removed), whether runtime request is needed, Play Store restrictions, and the correct ActivityResultContracts request pattern. Call before declaring any <uses-permission> in AndroidManifest.xml. Examples: 'CAMERA', 'POST_NOTIFICATIONS', 'ACCESS_FINE_LOCATION', 'WRITE_EXTERNAL_STORAGE'. Query 'runtime pattern' for the official Compose + Activity permission request code.

android_testing_guide

Complete Android testing reference covering: unit tests (JUnit4, MockK, Turbine, coroutines-test), Compose UI testing (ComposeTestRule, finders, actions, assertions, testTag), Espresso for View-based tests and Compose interop, ViewModel testing with MainDispatcherRule, Room in-memory DB tests, Hilt test injection (@HiltAndroidTest, @BindValue), and test pyramid strategy. Call before writing any test. Topics: setup, unit tests, compose testing, espresso, hilt testing, pyramid.

android_build_and_publish

Complete Android build pipeline and Play Store publishing reference. Covers: R8/ProGuard configuration (keep rules, shrink, obfuscate, mapping.txt recovery), Gradle Version Catalogs (libs.versions.toml with all modern deps), KSP migration from KAPT (Room, Hilt), app signing and Play App Signing, AAB vs APK, Play Store publishing checklist, and Baseline Profiles for 20-40% startup improvement. Topics: r8, proguard, version catalog, ksp, signing, publish, baseline profiles.

android_large_screen_guide

Complete reference for building Google Play-compliant large screen, tablet, foldable, and ChromeOS apps. Covers: WindowSizeClass (Compact/Medium/Expanded), NavigationSuiteScaffold, ListDetailPaneScaffold (two-pane), foldable hinge detection, continuity across config changes, and Google Play large-screen quality tier checklist. Call before building any multi-screen layout, navigation, or when targeting tablets and foldables. Topics: windowsizeclass, navigation, two-pane, foldables, continuity, Play quality.