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Compose Feature Slice Builder

A senior-engineer rulebook for shipping one complete feature slice in Compose/CMP projects — endpoint → repository → ViewModel → UI → navigation → DI → tests.

Dev & CodingAdvanced★ 300⑂ 25AI score 9/10Last updated: Oct 2, 2026

What it does

  • Adds, changes, or reviews one feature slice (screen, sheet, dialog, destination) in a Compose / Compose Multiplatform project, end to end.
  • Fixes the writing order: Contract.kt → ViewModel → Route/Screen → DI & navigation → tests.
  • Enforces concrete patterns: MVI contract (UiState/UiAction/UiEffect), launchGuarded with an explicit onError, SavedStateHandle drafts, LifecycleStartEffect cold-load vs reconcile, overlap-guarding jobs.
  • Requires restating the "state matrix" (cold load, refreshing, error, retry, empty, not-found, overlapping loads, process-death restore) before coding, then shipping real ViewModel tests for those rows.
  • Ships verification gates with rg commands so no TODO, FIXME, SEAM, or stub body survives to "done".
  • Scaffolds via scripts/new-feature.sh, or writes the smallest correct diff when touching an existing destination.

Who it's for

  • Android / KMP engineers building Jetpack Compose apps with an MVI architecture.
  • Teams that want codified feature-review criteria and architecture that survives two years.
  • Anyone tired of AI calling invented helpers or leaving TODOs behind.

Example uses

  1. "Add a Notes list/detail screen" → scaffold with scripts/new-feature.sh --name Notes --item Note ..., implement the SEAMs, register the Koin module in the composition root.
  2. "Add draft saving to this form" → drafts in SavedStateHandle with derived UiState, no rememberSaveable mirror or syncing LaunchedEffect.
  3. "Review my teammate's feature PR" → use references/review-mode.md gates to flag dead UiState fields, silent refresh failures, and missing matrix tests, then emit exactly one corrected version of each blocking file.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/Meet-Miyani/compose-skill/HEAD/skills/compose-feature/SKILL.md

What I want: (describe your task here)

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↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the skills/compose-feature folder from the GitHub repo Meet-Miyani/compose-skill into my ~/.claude/skills/compose-feature/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/Meet-Miyani/compose-skill.git && mkdir -p ~/.claude/skills && cp -r compose-skill/skills/* ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repo: git clone https://github.com/Meet-Miyani/compose-skill.git
  3. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy the skills in: cp -r compose-skill/skills/* ~/.claude/skills/
    • This skill references sibling skills (compose, compose-architecture, compose-ui, compose-data), so copy all of them.
  5. (Optional) Check whether your project has scripts/new-feature.sh and .composekit.conf. Without them, Claude hand-writes the code instead of scaffolding.
  6. Restart Claude Code and ask something like "Add a Notes list screen slice" — the skill triggers automatically.
View source on GitHub ↗License: MIT