# AGENTS.md > **Start every session by reading this file.** > This file outlines the operational protocols, coding standards, and architectural decisions for this FastAPI project. ## 1. Agent Operational Protocols ### 🧠 Work Patterns (Plan-Act-Reflect) * **Plan:** Before writing code, briefly outline your plan. Identify which files you will touch and what the side effects might be. * **Act:** Execute the changes in small, atomic steps. * **Reflect:** After coding, verify your work. Did you break existing tests? Did you add new tests? ### 🛡️ Git Discipline * **NEVER commit to `main` or `master` directly.** Always create a feature branch: `feature/your-feature-name` or `fix/issue-description`. * **Commit Messages:** Use the [Conventional Commits](https://www.conventionalcommits.org/) format. * `feat: add user login endpoint` * `fix: resolve database connection timeout` * `refactor: split monolith dependency file` * **Atomic Commits:** Keep commits small. One logical change = one commit. ### 📝 Changelog Maintenance * **Update `CHANGELOG.md`** with every user-facing change. * Format: `## [Unreleased] - YYYY-MM-DD` followed by `### Added`, `### Changed`, or `### Fixed`. ### 🚀 Release Flow When changes are ready for deployment: 1. **Ask user if deploy cycle is desired ** 2. **Update version** in `pyproject.toml`: - Bug fixes: bump patch version (1.8.3 → 1.8.4) - New features: bump minor version (1.8.4 → 1.9.0) 3. **Update CHANGELOG.md**: - Move items from `[Unreleased]` to new version section - Add release date: `## [1.8.4] - 2025-12-16` 4. **Commit and tag**: ```bash git add -A git commit -m "fix: description of changes" git tag v1.8.4 git push origin main --tags ``` 5. **CI/CD triggers automatically**: - Gitea CI builds Docker image on new tag - Watchtower pulls and deploys to production - Verify deployment: `curl http://192.168.86.149:8083/health` --- ## 2. FastAPI Architecture & Best Practices *Reference: [FastAPI Best Practices](https://github.com/zhanymkanov/fastapi-best-practices)* ### 📂 Project Structure (Directory-based, NOT File-type based) Do **not** group files by type (e.g., one huge `routers` folder). Group by **domain/module** inside a `src/` directory. **Correct Structure:** ```text src/ ├── auth/ │ ├── router.py # Endpoints │ ├── schemas.py # Pydantic models │ ├── service.py # Business logic (CRUD, etc.) │ ├── dependencies.py# Module-specific dependencies │ └── config.py # Module-specific settings ├── posts/ │ ├── router.py │ └── ... └── main.py # App entry point