# Fastapi Clean Architecture Mode > Activate Clean Architecture rules for the current FastAPI session — enforces unidirectional layer dependencies, repository pattern with result enums, dependency inversion via fastapi-injector, and all naming conventions on every file written or edited until the session ends. Use when this capability is needed. - Skill: `tomevault-io/fastapi-clean-architecture-mode` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/fastapi-clean-architecture-mode` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/fastapi-clean-architecture-mode/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/fastapi-clean-architecture-mode --- # FastAPI Clean Architecture — Mode Skill Activates Clean Architecture rules for the current FastAPI session. Everything Claude writes or edits from this point will follow the 4-layer structure, dependency direction, repository pattern, and naming discipline. For scaffolding a new project use `/fastapi-clean-architecture-template`. To audit an existing project use `/fastapi-clean-architecture-review`. --- ## On activation 1. Read `rules.md` from this skill's directory — it contains the full rule set. Apply every rule to all files written or edited for the rest of this session. 2. Confirm to the user: "FastAPI Clean Architecture mode is active. All architecture rules are now enforced for this session." --- > Source: [joe-vi/Templates](https://github.com/joe-vi/Templates) — distributed by [TomeVault](https://tomevault.io).