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Upgrades, or migrates, an Android project to use Android Gradle Plugin (AGP) version 9. Do not use this skill for migrating Kotlin Multiplatform (KMP) projects.
Provides a complete workflow for implementing verified email retrieval on Android Credential Manager API. Use this skill to integrate a secure, OTP-less email verification flow into an Android app. This skill solves the problem of high-friction sign-up processes by leveraging cryptographically verified credentials from trusted providers like Google.
Use this skill to integrate the Jetpack Compose Styles API into an Android project. This skill guides you through upgrading dependencies, setting up component themes, making custom components styleable, and migrating existing layout properties to use unified styles. Migrate custom design system components, replace hard coded parameters with Style attributes, and use Modifier.styleable for interaction states.
Learn how to install and migrate to Jetpack Navigation 3, and how to implement features and patterns such as deep links, multiple backstacks, scenes (dialogs, bottom sheets, list-detail, two-pane, supporting pane), conditional navigation (such as logged-in navigation vs anonymous), returning results from flows, integration with Hilt, ViewModel, Kotlin, and view interoperability.
Helps developers integrate, debug, and resolve Play Engage SDK implementation issues. Use when adding Engage SDK support, generating publishing code, mapping data classes to entities, or fixing SDK-related errors.
Use this skill when upgrading or migrating an Android project from any legacy Google Play Billing Library (PBL) version to the latest stable version of PBL.
Analyze and create a testing strategy for native Android apps - install testing libraries, set up test infrastructure, create harnesses for unit tests, UI tests, screenshot tests, and end-to-end tests.
| name | agp-9-upgrade |
| description | Upgrades, or migrates, an Android project to use Android Gradle Plugin (AGP) version 9. Do not use this skill for migrating Kotlin Multiplatform (KMP) projects. |
| license | Complete terms in LICENSE.txt |
| metadata | {"author":"Google LLC","last-updated":"2026-06-03","keywords":["Android Gradle Plugin 9","AGP 9","AGP Upgrade","AGP Migration","New AGP DSL","Migrate to built-in Kotlin"]} |
See the AGP 9 migration guide for the major changes, many breaking, in AGP 9 compared to AGP 8.
If the user requests to update or migrate to AGP 9, first check the AGP version used in the project. If it is lower than 9, stop and ask the user to run the AGP Upgrade Assistant in Android Studio to update to the latest stable version of AGP, and confirm when done. The user may also request that this requirement be skipped; if this is the case, you should update the version of AGP to the latest stable version as part of the AGP 9 migration. See the AGP 9 migration guide for how to do this.
Each version of AGP has its own set of compatibilities with other tools, such as Gradle, JDK, and Kotlin. The release notes for each of these versions will include a Compatibility table indicating the minimum versions for these tools.
Do not use this skill for KMP projects, as they are unsupported.
If AGP is already at 9 or higher, then do the following:
If KSP (com.google.devtools.ksp) is used in the project, ensure it is on
version 2.3.6 or higher.
If Hilt is used in the project, ensure it is on version 2.59.2 or higher.
See the guide for detailed information.
See the guide for detailed information.
See also gradle-recipes for examples on how to migrate old code to code that is compatible with AGP 9 and the new DSL.
If KSP (com.google.devtools.ksp) or kapt (org.jetbrains.kotlin.kapt) are
used in the project, see KSP, kapt, and legacy-kapt for detailed migration
steps.
If any Android module contains custom BuildConfig fields, see BuildConfig for detailed information.
After the migration, check gradle.properties. Remove the following flags:
Additionally, delete all temporary files you've created.
android.disallowKotlinSourceSets=false to gradle.properties.clean task. This is a waste of time.After migration, verify the following:
./gradlew help succeeds../gradlew build --dry-run succeeds.Paparazzi v2.0.0-alpha04 and lower versions have issues with AGP 9. See references/paparazzi-gradle-9.md for details.