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agp9-kotlin-migration

agp9-kotlin-migration is a skill for Claude Code, Codex from GDvega/super-android-kotlin-firebase-skill. It costs 34 tokens per session (721 once invoked), scanned A, original, MIT.

A guide for upgrading Android build tools, including Android Gradle Plugin, Kotlin, Gradle, Jetpack Compose, and Firebase dependency versions. It checks compatibility and validates each upgrade step.

In plain words
What is it for?
Use it to migrate to Android Gradle Plugin 9 or newer Kotlin tooling, update Gradle files or version catalogs, and check builds and CI during the migration.
Why use it?
Android build-tool upgrades can cause sync failures, dependency conflicts, or broken builds if several versions change at once.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: $skill-name invocation.

not rated 2repo 2mo ago A scan 34 tokens original MIT

Good fit Use it to migrate to Android Gradle Plugin 9 or newer Kotlin tooling, update Gradle files or version catalogs, and check builds and CI during the migration.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/gdvega/super-android-kotlin-firebase-skill/agp9-kotlin-migration
View source ↗ GDvega/super-android-kotlin-firebase-skill
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 GDvega/super-android-kotlin-firebase-skill --skill agp9-kotlin-migration
Clone the repo
git clone --depth 1 https://github.com/GDvega/super-android-kotlin-firebase-skill

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.

agentmods badge for agp9-kotlin-migration

README.md
[![agentmods](https://agentmods.dev/badge/skills/gdvega/super-android-kotlin-firebase-skill/agp9-kotlin-migration/github.svg)](https://agentmods.dev/skills/gdvega/super-android-kotlin-firebase-skill/agp9-kotlin-migration)
Your own site
<a href="https://agentmods.dev/skills/gdvega/super-android-kotlin-firebase-skill/agp9-kotlin-migration"><img src="https://agentmods.dev/badge/skills/gdvega/super-android-kotlin-firebase-skill/agp9-kotlin-migration/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 agp9-kotlin-migration

Your own site · 80×15
<a href="https://agentmods.dev/skills/gdvega/super-android-kotlin-firebase-skill/agp9-kotlin-migration"><img src="https://agentmods.dev/badge/skills/gdvega/super-android-kotlin-firebase-skill/agp9-kotlin-migration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 721 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 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00034 $0.00721
Opus 5 $0.00017 $0.00360
Sonnet 5 $0.00007 $0.00144
Haiku 4.5 $0.00003 $0.00072

Measured 11d ago against content hash 74b24f2e609f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

agp9-kotlin-migration 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 11d 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/agp9-kotlin-migration/SKILL.md · 109 lines

How it starts

The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Purpose

Upgrade Android build tooling in small verified steps while preserving module structure, CI and dependency compatibility.

When to use

  • Migrating to AGP 9 or newer Kotlin tooling.
  • Fixing Gradle sync errors after an upgrade.
  • Modernizing Gradle Kotlin DSL, wrapper or version catalogs.

Inputs to inspect

  • settings.gradle.kts
  • Root and module build.gradle.kts files
  • gradle/libs.versions.toml
  • gradle/wrapper/gradle-wrapper.properties
  • CI workflow files
  • Compose and Firebase BoM usage

Required workflow

  1. Record current Gradle, AGP, Kotlin, Compose and Firebase versions.
  2. Check compatibility before editing.
  3. Upgrade one tooling family at a time.
  4. Run sync/build validation after each step.
  5. Document rollback commands and residual risks.

Rules

  • Do not upgrade every dependency blindly.
  • Do not mix alpha/beta versions unless requested.
  • Do not change module structure without a reason.
  • Keep version catalog aliases stable when possible.
  • Preserve build variants and signing boundaries.

Local skills to invoke

  • gradle-build
  • dependency-upgrade-safety
  • debugging
  • testing

External companion skills to use when installed

Do not assume these companion skills are installed. Prefer the local skills above first, then consult Companion Skills for install and verification commands.

  • android/skills — use for official Android workflow alignment around edge-to-edge, adaptive UI, Navigation 3, R8, AGP or testing setup.

Files commonly touched

  • settings.gradle.kts
  • build.gradle.kts
  • app/build.gradle.kts
  • gradle/libs.versions.toml
  • gradle-wrapper.properties
  • .github/workflows/*

Commands to validate

./gradlew --version
./gradlew projects
./gradlew help
./gradlew assembleDebug
./gradlew test

Common mistakes to avoid

  • Skipping wrapper compatibility.
  • Updating Kotlin and Compose compiler assumptions together without checks.
  • Removing plugins still used by convention modules.
  • Ignoring CI differences from local builds.

Read the full file on GitHub · 109 lines

Files

What ships with it

7 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. 11d ago First seen · 109 lines · 34 tokens per session scan A 74b24f2e609f

Subscribe to this mod's changes

agp9-kotlin-migration is a skill published in the GitHub repository GDvega/super-android-kotlin-firebase-skill (2 stars, last pushed 2mo ago), licensed MIT. It adds 34 tokens to every session and 721 once invoked, about $0.0002 per session on Opus 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 2026-08-31.

Claude CodeDevOps and cloudMobileagent-skillsai-agentsandroidandroid-studiocodex
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