agp-9-upgrade

agp-9-upgrade is a skill for Claude Code from hanamizuki/solopreneur. It costs 48 tokens per session (904 once invoked), scanned A, a copy of agp-9-upgrade, MIT.

A migration guide for updating a standard Android project to Android Gradle Plugin version 9, the build tool that compiles and packages Android apps.

In plain words
What is it for?
Checking compatibility and updating an Android project that uses AGP 8 or earlier. It does not cover Kotlin Multiplatform projects.
Why use it?
It highlights breaking changes and the required versions of Gradle, Java, Kotlin, KSP, and Hilt so the upgrade does not fail unexpectedly.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the android-dev plugin — 36 skills, 1 agent shipped together

Good fit Checking compatibility and updating an Android project that uses AGP 8 or earlier. It does not cover Kotlin Multiplatform projects.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hanamizuki/solopreneur/agp-9-upgrade
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 hanamizuki/solopreneur --skill agp-9-upgrade
Clone the repo
git clone --depth 1 https://github.com/hanamizuki/solopreneur

Made for: Claude Code.

Or install android-dev, the plugin that ships this one along with the rest of its 36 skills, 1 agent.

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.

agentmods badge for agp-9-upgrade

README.md
[![agentmods](https://agentmods.dev/badge/skills/hanamizuki/solopreneur/agp-9-upgrade/github.svg)](https://agentmods.dev/skills/hanamizuki/solopreneur/agp-9-upgrade)
Your own site
<a href="https://agentmods.dev/skills/hanamizuki/solopreneur/agp-9-upgrade"><img src="https://agentmods.dev/badge/skills/hanamizuki/solopreneur/agp-9-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.

agentmods 80×15 button for agp-9-upgrade

Your own site · 80×15
<a href="https://agentmods.dev/skills/hanamizuki/solopreneur/agp-9-upgrade"><img src="https://agentmods.dev/badge/skills/hanamizuki/solopreneur/agp-9-upgrade.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 904 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.
Origin 97% copy Near-identical to another mod 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00048 $0.00904
Opus 5 $0.00024 $0.00452
Sonnet 5 $0.00010 $0.00181
Haiku 4.5 $0.00005 $0.00090

Measured 12d ago against content hash aaf60b13c862, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

agp-9-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 12d 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.

Origin

This is a copy

97% identical to agp-9-upgrade — 34 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/claude/android-dev/skills/agp-9-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.

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 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.

Steps

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

Step 1: Update dependencies

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.

Step 2: Migrate to built-in Kotlin

See the guide for detailed information.

Step 3. 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 4. Migrate kapt to KSP or legacy-kapt

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.

Read the full file on GitHub · 88 lines

Files

What ships with it

5 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.

  1. 12d ago First seen · 88 lines · 48 tokens per session scan A aaf60b13c862

Subscribe to this mod's changes

agp-9-upgrade is a skill published in the GitHub repository hanamizuki/solopreneur (149 stars, last pushed 26d ago), licensed MIT. It adds 48 tokens to every session and 904 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to agp-9-upgrade, differing in 34 lines, and is treated as a copy.

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