# Flutter Feature Based Clean Architecture > Standards for organizing code by feature at the root level to improve scalability and maintainability. Use when this capability is needed. - Skill: `tomevault-io/flutter-feature-based-clean-architecture-2` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/flutter-feature-based-clean-architecture-2` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/flutter-feature-based-clean-architecture-2/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: AI & ML - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/flutter-feature-based-clean-architecture-2 --- # Feature-Based Clean Architecture ## **Priority: P0 (CRITICAL)** Standard for modular Clean Architecture organized by business features in `lib/features/`. ## Structure See [references/folder-structure.md](references/folder-structure.md) for the complete directory blueprint. ## Implementation Guidelines - **Feature Encapsulation**: Keep logic, models, and UI internal to the feature directory. - **Strict Layering**: Maintain 3-layer separation (Domain/Data/Presentation) within each feature. - **Dependency Rule**: `Presentation -> Domain <- Data`. Domain must have zero external dependencies. - **Cross-Feature Communication**: Features only depend on the **Domain** layer of other features. - **Flat features**: Keep `lib/features/` flat; avoid nested features. - **No DTO Leakage**: Never expose DTOs or Data Sources to UI or other features; return Domain Entities. - **Shared logic**: Move cross-cutting concerns to `lib/shared/` or `lib/core/`. ## Reference & Examples For feature folder blueprints and cross-layer dependency templates: See [references/REFERENCE.md](references/REFERENCE.md). ## Related Topics layer-based-clean-architecture | retrofit-networking | go-router-navigation | bloc-state-management | dependency-injection --- > Source: [fierzone/agent-skills-standard](https://github.com/fierzone/agent-skills-standard) — distributed by [TomeVault](https://tomevault.io).