M3 Expressive skills compared

There are three public Material skills for coding agents. They overlap less than their names suggest. Pick by what you need: design specs, broad Material 3 coverage, or Compose code that compiles against your version.

	M3 Expressive Skill (this one)	hamen/material-3-skill	abhixv/google-m3-expressive-design-skill
Focus	M3 Expressive in Jetpack Compose	Material 3 across Compose, Flutter, web	M3 / M3 Expressive design guidelines
Platforms	Compose	Compose (primary), Flutter, web	Compose, Views, Flutter, web (design level)
API status per material3 version	Yes: stable / opt-in / internal / missing for 1.4.0, alphas, beta01, beta02	No	Platform availability table
Deprecations since 1.4.0 with replacements	Yes	No	No
Kotlin samples compiled in CI	Yes, 27, against 1.5.0-beta02	No	No
Exact design tokens and per-component dp	Spring values, shape scale, button sizes	Token tables	Extensive, from m3.material.io
Reference images	No	No	Yes, about 2,600 official images
Review / audit mode	Checklist + grep commands + report format	Scored compliance audit	Review against guidelines
Docs website	expressive.sanikant.dev	No	No
License	MIT	MIT	MIT

When to use which

• You write Compose and want it to build first time: this skill. Its main value is version accuracy. For example, almost every Expressive API became stable in 1.5.0-beta02, and the skill knows that.
• You need pixel specs, or design for several platforms: abhixv’s skill has far more design detail and images. It and this skill work well together, one for the spec and one for the code.
• You need plain Material 3 on Flutter or web: hamen’s skill.

What each one gets wrong (as of 2026-10-26)

Every skill falls behind as material3 changes, including this one. Facts that were out of date when this page was written:

• abhixv’s platform notes describe Compose Expressive APIs as experimental until 1.5.0. In 1.5.0-beta01 and beta02, most are already stable.
• This skill covers 1.5.0-beta02. When a newer version ships, check the changelog before relying on it.