Android Agp Upgrade Agent Skill

Upgrade an Android project to Android Gradle Plugin (AGP) 9. Use when migrating to AGP 9, updating Gradle build files, migrating to built-in Kotlin, or adopting the new AGP DSL.

2k tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

536

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/HoangNguyen0403/agent-skills-standard --skill android-agp-upgrade

What comes with it

6 782 bytes besides the instruction

evals/evals.json

references/built-in-kotlin.md

references/dsl-migration.md

The instruction itself

12 sections, as written by the author

AGP 9 Upgrade Workflow

Priority: P1 (HIGH)

Step-by-step workflow for upgrading an Android project to AGP 9.

Prerequisites

Check current AGP version. If below 8.x, recommend running the AGP Upgrade Assistant in Android Studio first.
Do NOT use this skill for Kotlin Multiplatform (KMP) projects.
Verify Gradle, JDK, and Kotlin version compatibility with AGP 9 release notes.

Step 1: Update dependencies

If KSP (com.google.devtools.ksp) is used, ensure version 2.3.6+.
If Hilt is used, ensure version 2.59.2+.
Update AGP to the latest stable 9.x version in the project's build files.

Step 2: Migrate to built-in Kotlin

AGP 9 includes built-in Kotlin support — the org.jetbrains.kotlin.android plugin is no longer needed.

See migration guide for detailed steps.

Step 3: Migrate to the new AGP DSL

AGP 9 introduces a new DSL for android {} blocks. Key changes include namespace handling, build type configuration, and source set declarations.

See DSL migration for before/after examples.

Step 4: Migrate kapt to KSP or legacy-kapt

If the project uses kapt:

Prefer migrating to KSP where annotation processors support it (Room, Hilt, Moshi).
For processors without KSP support, use legacy-kapt as a bridge.

Step 5: Update BuildConfig

If any module uses custom BuildConfig fields, update to the new AGP 9 syntax.

Step 6: Clean up gradle.properties

Remove these flags after migration:

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

Guidelines

Never write or run Python scripts for build migration.
Never add android.disallowKotlinSourceSets=false to gradle.properties.
Do not run clean task when verifying — it wastes time.

Verification

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

References

Built-in Kotlin Migration
DSL Migration Guide

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How to use it

Copy the folder

Take hoangnguyen0403/android-agp-upgrade from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.