What is android-agp-upgrade?

A migration guide for upgrading an Android project to Android Gradle Plugin 9, the build tool that prepares Android code for compilation and packaging.

Use it when moving to AGP 9, updating Gradle files, adopting built-in Kotlin, changing the Android build configuration, or migrating from kapt to KSP where supported.

It helps identify compatibility issues and update build settings, Kotlin support, and annotation-processing tools during the upgrade.

android-agp-upgrade — Skill by HoangNguyen0403/agent-skills-standard

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add HoangNguyen0403/agent-skills-standard --skill android-agp-upgrade

Clone the repo

git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/android-agp-upgrade/github.svg)](https://agentmods.dev/skills/hoangnguyen0403/agent-skills-standard/android-agp-upgrade)

Your own site

<a href="https://agentmods.dev/skills/hoangnguyen0403/agent-skills-standard/android-agp-upgrade"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/android-agp-upgrade/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/hoangnguyen0403/agent-skills-standard/android-agp-upgrade"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/android-agp-upgrade.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 710 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00051	$0.00710
Opus 5.5	$0.00020	$0.00284
Sonnet 5.5	$0.00010	$0.00142
Haiku 4.5	$0.00005	$0.00071

Measured 1mo ago against content hash 1122aa59d8c8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

android-agp-upgrade scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/android/android-agp-upgrade/SKILL.md · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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

Read the full file on GitHub · 88 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago Changed · +5 lines 1122aa59d8c8
1mo ago First seen · 83 lines · 51 tokens per session scan A c9fe7e7e7651

Subscribe to this mod's changes

android-agp-upgrade is a skill published in the GitHub repository HoangNguyen0403/agent-skills-standard (582 stars, last pushed today), licensed MIT. It adds 51 tokens to every session and 710 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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Add router-agnostic, native app-like page transitions to mobile web apps with SSGOI. Explore live drill, sheet, slide, and zoom demos at https://ssgoi.dev. Use when building or improving a mobile web app's routed page structure, layouts, or transitions, or when a project uses SSGOI or an @ssgoi package.

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android-agp-upgrade