# Fba > FastAPI Best Architecture (fba) project development guide. Provide complete architecture specifications, coding styles, and plugin development guidance. Use when this capability is needed. - Skill: `tomevault-io/fba` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/fba` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/fba/raw - Safety review: pending - 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/fba --- # FastAPI Best Architecture Official documentation: https://fastapi-practices.github.io/fastapi_best_architecture_docs/ ## Core Architecture Project adopts **Three-tier architecture**: | Layer | Responsibility | |---------|--------------------------------------------------------------------| | API | Route processing, parameter validation, and response return | | Schema | Data transfer objects, request/response data structure definitions | | Service | Business logic, data processing, exception handling | | CRUD | Database operations (inherits `CRUDPlus`) | | Model | ORM models (inherits `Base`) | ## Development Workflow 1. Define database models (model) 2. Define data validation models (schema) 3. Define routes (router) 4. Write business logic (service) 5. Write database operations (crud) ## Detailed Guides | Module | Document | |--------------|----------------------------| | API | references/api.md | | Schema | references/schema.md | | Model | references/model.md | | Naming | references/naming.md | | Plugin | references/plugin.md | | Coding Style | references/coding-style.md | | Config | references/config.md | ## CLI Execute `fba -h` for more details. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/fastapi-practices) — claim your Tome and manage your conversions.