Individual skill

r8-analyzer

Analyzes Android build files and R8 keep rules to identify redundancies, broad package-wide rules, and rules that subsume library consumer keep rules. Use this skill when developers want to optimize their Android app's size, remove redundant or overly broad keep rules, or troubleshoot ProGuard configurations. Don't use for general Gradle build errors, Compose UI performance, or runtime CPU profiling.

performance/r8-analyzer/SKILL.md

Read pinned source

Source commit 6daa53ef27fa2aa87827d183a85c06cedceca833

What was checked

Matches the observed repository HEAD: Yes
Scanner rules are current: Yes
Repository scan complete: No
Skill scan complete: No
Observed behavior: Network or broad shell
Last checked: Nov 3, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

Install this skill

Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.

An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.

Repository context

Repository stars (not skill ratings): 10,389
Repository last updated: Nov 5, 2026
License: Apache-2.0

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

skills Repository topic
design Derived category
design-interface Derived category

Declared tags are partial or unavailable.

Files and excerpt

File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.

Browse files

SKILL.mdcore · 6,311 bytes
references/CONFIGURATION.mddoc · 2,309 bytes
references/FULL_BUILD_CONFIG_ANALYZER.mddoc · 4,161 bytes
references/INSPECT-RULES.mddoc · 10,139 bytes
references/REPORT_FORMAT.mddoc · 4,124 bytes
references/android/topic/performance/app-optimization/enable-app-optimization.mddoc · 16,659 bytes
scripts/analyze.pyruns · 8,818 bytes
scripts/convert_pb_to_json.pyruns · 2,365 bytes
scripts/keep_radius_pb2.pyruns · 7,899 bytes

Read excerpt


## Step 1. Setup and configuration check

- Inspect `build.gradle`, `build.gradle.kts`, and `gradle.properties`.
- Use [references/CONFIGURATION.md](references/CONFIGURATION.md) to identify missing optimizations.
- **AGP** : If the version is lower than 9.3, suggest migration to 9.3 for the simplified [`optimization {}` DSL](references/android/topic/performance/app-optimization/enable-app-optimization.md) and the Configuration Analyzer task.
- **Full mode** : Verify `android.enableR8.fullMode=false` is removed from the `gradle.properties` file.

## Step 2. Analysis path selection

- Inspect `build.gradle`, `build.gradle.kts`, `settings.gradle`, `settings.gradle.kts`, `gradle.properties`, and `libs.versions.toml` to get the AGP and R8 versions. An R8 version pinned in `settings.gradle(.kts)` replaces the R8 bundled with AGP.
- Find the app module (usually `app`) and a build variant with R8 enabled (usually `release`). The following commands use them as `<module>` and `<Variant>`, for example `:app:minifyReleaseWithR8`.
- The helper scripts are in this skill's `scripts/` directory. In the following
  commands, `<skill_dir>` is this skill's directory. Run every command from the
  project root.