gradle-build-performance

gradle-build-performance is a skill for Claude Code from hanamizuki/solopreneur. It costs 37 tokens per session (1,950 once invoked), scanned A, a copy of gradle-build-performance, MIT.

A guide for finding and reducing slow Android build times in Gradle, the system that assembles Android projects.

In plain words
What is it for?
Comparing clean and incremental builds, reading build scans, locating bottlenecks, reducing unnecessary recompilation, and improving CI build times.
Why use it?
It turns vague slow-build complaints into measured checks of configuration, compilation, dependency downloads, and other build stages.

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 Comparing clean and incremental builds, reading build scans, locating bottlenecks, reducing unnecessary recompilation, and improving CI build times.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hanamizuki/solopreneur/gradle-build-performance
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 gradle-build-performance
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 gradle-build-performance

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/hanamizuki/solopreneur/gradle-build-performance"><img src="https://agentmods.dev/badge/skills/hanamizuki/solopreneur/gradle-build-performance.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,950 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 100% 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 $0.00037 $0.01950
Opus 5 $0.00018 $0.00975
Sonnet 5 $0.00007 $0.00390
Haiku 4.5 $0.00004 $0.00195

Measured 11d ago against content hash 5927653840ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

gradle-build-performance 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.

Origin

This is a copy

100% identical to gradle-build-performance — 0 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/gradle-build-performance/SKILL.md · 347 lines

How it starts

The opening of the file, as written. The whole thing — 347 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Gradle Build Performance

When to Use

  • Build times are slow (clean or incremental)
  • Investigating build performance regressions
  • Analyzing Gradle Build Scans
  • Identifying configuration vs execution bottlenecks
  • Optimizing CI/CD build times
  • Enabling Gradle Configuration Cache
  • Reducing unnecessary recompilation
  • Debugging kapt/KSP annotation processing

Example Prompts

  • "My builds are slow, how can I speed them up?"
  • "How do I analyze a Gradle build scan?"
  • "Why is configuration taking so long?"
  • "Why does my project always recompile everything?"
  • "How do I enable configuration cache?"
  • "Why is kapt so slow?"

Workflow

  1. Measure Baseline — Clean build + incremental build times
  2. Generate Build Scan./gradlew assembleDebug --scan
  3. Identify Phase — Configuration? Execution? Dependency resolution?
  4. Apply ONE optimization — Don't batch changes
  5. Measure Improvement — Compare against baseline
  6. Verify in Build Scan — Visual confirmation

Quick Diagnostics

Generate Build Scan

./gradlew assembleDebug --scan

Profile Build Locally

./gradlew assembleDebug --profile
# Opens report in build/reports/profile/

Build Timing Summary

./gradlew assembleDebug --info | grep -E "^\:.*"
# Or view in Android Studio: Build > Analyze APK Build

Build Phases

Phase What Happens Common Issues
Initialization settings.gradle.kts evaluated Too many include() statements
Configuration All build.gradle.kts files evaluated Expensive plugins, eager task creation
Execution Tasks run based on inputs/outputs Cache misses, non-incremental tasks

Identify the Bottleneck

Build scan → Performance → Build timeline
  • Long configuration phase: Focus on plugin and buildscript optimization
  • Long execution phase: Focus on task caching and parallelization
  • Dependency resolution slow: Focus on repository configuration

Read the full file on GitHub · 347 lines

Files

What ships with it

1 file 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 · 347 lines · 37 tokens per session scan A 5927653840ff

Subscribe to this mod's changes

gradle-build-performance is a skill published in the GitHub repository hanamizuki/solopreneur (148 stars, last pushed 26d ago), licensed MIT. It adds 37 tokens to every session and 1,950 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to gradle-build-performance, differing in 0 lines, and is treated as a copy.

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