How do I install the Agp 9 Upgrade skill?

Run npx skillmds@latest add meganz/agp-9-upgrade in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the Agp 9 Upgrade skill do?

Upgrades, or migrates, an Android project to use Android Gradle Plugin (AGP) version 9 It is listed under Coding & Dev Tools on SkillMD.

Is Agp 9 Upgrade safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Agp 9 Upgrade?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Agp 9 Upgrade free to use?

Yes. Installing skills from SkillMD is free. This skill is licensed under Complete terms in LICENSE.

Who published Agp 9 Upgrade?

meganz (@meganz) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Agp 9 Upgrade by meganz — Agent Skill

Name: Agp 9 Upgrade
Author: meganz

File contents

Migration guide

See the AGP 9 migration guide for the major changes, many breaking, in AGP 9 compared to AGP 8.

Requirements

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, and confirm when done.

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.

Steps

If AGP is already at 9 or higher, then do the following:

Step 1: Migrate to built-in Kotlin.

See the guide for detailed information.

Step 2. Migrate to the new AGP DSL.

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.

Step 3. Migrate kapt to KSP or legacy-kapt

If KSP (com.google.devtools.ksp) is used in the project, ensure it is on version 2.3.6 or higher.

See KSP, kapt, and legacy-kapt for detailed information.

Step 4. BuildConfig

If any Android module contains custom BuildConfig fields, see BuildConfig for detailed information.

Step 5. Update gradle.properties

After the migration, check gradle.properties. Remove the following flags:

android.builtInKotlin
android.newDsl
android.uniquePackageNames
android.enableAppCompileTimeRClass

Additionally, delete all temporary files you've created.

Guidelines

Never write or run python scripts.
Only search the Gradle dependency cache when inspecting external dependencies, and only as a last resort.
Never add android.disallowKotlinSourceSets=false to gradle.properties.
When verifying changes, don't run the clean task. This is a waste of time.

Verification

After migration, verify the following:

Gradle IDE sync succeeds.
./gradlew help succeeds.
./gradlew build --dry-run succeeds.

Troubleshooting

Paparazzi v2.0.0-alpha04 and lower versions have issues with AGP 9. See references/paparazzi-gradle-9.md for details.

---name: agp-9-upgradedescription: Upgrades, or migrates, an Android project to use Android Gradle Plugin (AGP) version 9license: Complete terms in LICENSE.txt---## Migration guideSee the [AGP 9 migration guide](references/android/build/releases/agp-9-0-0-release-notes.md) for the major changes, manybreaking, in AGP 9 compared to AGP 8.## RequirementsIf the user requests to update or migrate to AGP 9, first check the AGP versionused in the project. If it is lower than 9, stop and ask the user to run the AGPUpgrade Assistant in Android Studio, and confirm when done.Each version of AGP has its own set of compatibilities with other tools, such asGradle, JDK, and Kotlin. The release notes for each of these versions willinclude a **Compatibility** table indicating the minimum versions for thesetools.## StepsIf AGP is already at 9 or higher, then do the following:### Step 1: Migrate to built-in Kotlin.See [the guide](references/android/build/migrate-to-built-in-kotlin.md) for detailed information.### Step 2. Migrate to the new AGP DSL.See [the guide](references/android/build/releases/agp-9-0-0-release-notes.md) for detailed information.See also [gradle-recipes](references/recipes.md) for examples on how to migrate old code to codethat is compatible with AGP 9 and the new DSL.### Step 3. Migrate kapt to KSP or legacy-kaptIf KSP (`com.google.devtools.ksp`) is used in the project, ensure it is onversion 2.3.6 or higher.See [KSP, kapt, and legacy-kapt](references/ksp-kapt.md) for detailed information.### Step 4. BuildConfigIf any Android module contains custom BuildConfig fields, see [BuildConfig](references/buildconfig.md)for detailed information.### Step 5. Update gradle.propertiesAfter the migration, check gradle.properties. Remove the following flags:1. android.builtInKotlin2. android.newDsl3. android.uniquePackageNames4. android.enableAppCompileTimeRClassAdditionally, delete all temporary files you've created.## Guidelines- Never write or run python scripts.- Only search the Gradle dependency cache when inspecting external dependencies, and only as a last resort.- Never add `android.disallowKotlinSourceSets=false` to `gradle.properties`.- When verifying changes, don't run the `clean` task. This is a waste of time.## VerificationAfter migration, verify the following:1. Gradle IDE sync succeeds.2. `./gradlew help` succeeds.3. `./gradlew build --dry-run` succeeds.## TroubleshootingPaparazzi v2.0.0-alpha04 and lower versions have issues with AGP 9. See[references/paparazzi-gradle-9.md](references/paparazzi-gradle-9.md) for details.

Frequently asked questions

Agp 9 Upgrade