# Requirements: Task Management API

## Elevator Pitch
A RESTful task management API that allows users to create, read, update, delete,
and organize tasks with authentication, categorization, and search capabilities.

## Core Capabilities
| ID | Capability | Priority | Confidence |
|----|-----------|----------|------------|
| C-001 | User registration and authentication | P0 | HIGH |
| C-002 | Create, read, update, delete tasks | P0 | HIGH |
| C-003 | Categorize tasks with tags and projects | P1 | HIGH |
| C-004 | Search and filter tasks | P1 | MEDIUM |
| C-005 | Share tasks with other users | P2 | LOW |
| C-006 | Email notifications for due tasks | P2 | LOW |

## Target Users
- **Primary:** Individual users managing personal tasks
- **Secondary:** Small teams collaborating on shared projects

## Constraints
- **Timeline:** 2 weeks to MVP
- **Tech preferences:** Python 3.13, FastAPI, PostgreSQL
- **Compliance:** GDPR-ready (user data export/deletion)
- **Budget:** Zero-cost hosting (self-deployed)

## Success Metrics
| Metric | Target | Method |
|--------|--------|--------|
| API uptime | 99.9% | Health check monitoring |
| Create task latency | <200ms p95 | Prometheus metrics |
| User registration | <500ms p95 | Performance testing |
| Test coverage | >80% | pytest-cov |

## Non-Goals (v1)
1. Real-time collaboration (WebSockets)
2. Mobile app (API-only v1)
3. File attachments
4. Third-party integrations (Slack, GitHub)
