ajbcoding/claude-skill-eval/moai-alfred-spec-authoring

---
code: SPEC-001
title: Add User Authentication with JWT
status: draft
created_at: 2025-11-13
updated_at: 2025-11-13
priority: high
effort: 8
version: 1.0.0
epic: AUTH-01
domains:
  - backend
  - security
  - database
---
 
# SPEC-001: Add User Authentication with JWT
 
## Overview
Implement secure JWT-based user authentication with password hashing and token validation.
 
## Requirements
 
### REQ-001 (Universal)
SPEC: The authentication service SHALL validate JWT tokens using RS256 algorithm against the public key.
 
### REQ-002 (Conditional)
SPEC: If a JWT token has expired, then the authentication service SHALL reject the request and return HTTP 401.
 
### REQ-003 (Unwanted Behavior)
SPEC: The authentication service SHALL NOT accept JWT tokens signed with symmetric algorithms (HS256, HS384, HS512).
 
### REQ-004 (Stakeholder)
As an API consumer, I want to pass JWT tokens in the Authorization header so that my requests are authenticated.
 
### REQ-005 (Boundary Condition)
SPEC: The authentication service SHALL return HTTP 429 when a single IP attempts more than 10 failed authentications in 5 minutes.
 
## Unwanted Behaviors
 
### Security Constraints
- The system SHALL NOT store JWT secrets in source code
- The system SHALL NOT log JWT tokens or sensitive claims
 
### Performance Constraints
- The system SHALL NOT block on token validation (async pattern)
- The system SHALL NOT cache tokens indefinitely
 
## Acceptance Criteria
- [ ] All 5 REQ patterns implemented and tested
- [ ] Code coverage ≥85%
- [ ] Security scan passed (OWASP Top 10)
- [ ] Performance: JWT validation p99 latency ≤200ms

---
# SPEC identifier (auto-generated)
code: SPEC-001
 
# SPEC title (descriptive, 50-80 chars)
title: Add User Authentication with JWT
 
# SPEC status (draft | active | deprecated | archived)
status: draft
 
# Creation timestamp (ISO 8601: YYYY-MM-DD)
created_at: 2025-11-13
 
# Last updated timestamp (ISO 8601: YYYY-MM-DD)
updated_at: 2025-11-13
 
# Business priority (critical | high | medium | low)
priority: high
 
# Estimated effort in story points (1-13 scale)
effort: 8
---

# Version tracking (semantic versioning: major.minor.patch)
version: 1.0.0
 
# Deadline target date (ISO 8601: YYYY-MM-DD)
deadline: 2025-12-15
 
# Epic this SPEC belongs to (e.g., AUTH-01, ONBOARDING-02)
epic: AUTH-01
 
# Related SPEC codes (dependencies or conflicts)
depends_on:
  - SPEC-002
  - SPEC-003
 
# Affected domains (for routing to specialists)
domains:
  - backend
  - security
  - database
 
# Acceptance criteria complexity rating
acceptance_difficulty: high
 
# Rollback complexity rating (critical | high | medium | low)
rollback_risk: medium
 
# Risk assessment notes
risks: |
  - Security: JWT key rotation must be tested
  - Performance: Token validation on every request
 
# Custom tags for filtering/searching
tags:
  - authentication
  - security
  - jwt
  - users

SPEC: The [System] SHALL [Action]

SPEC-001-REQ-001: The authentication service SHALL validate
all JWT tokens using RS256 algorithm against the public key.
 
Related TEST:
- test_valid_jwt_with_rs256_signature
- test_invalid_jwt_with_wrong_algorithm

SPEC: If [Condition], then the [System] SHALL [Action]

SPEC-001-REQ-002: If a JWT token has expired,
then the authentication service SHALL reject the request
and return HTTP 401 Unauthorized with error code TOKEN_EXPIRED.
 
Related TEST:
- test_expired_token_returns_401
- test_expired_token_error_message

SPEC: The [System] SHALL NOT [Action]

SPEC-001-REQ-003: The authentication service SHALL NOT
accept JWT tokens signed with symmetric algorithms (HS256, HS384, HS512)
in a production environment.
 
Related TEST:
- test_reject_hs256_signed_token
- test_reject_hs384_signed_token
- test_reject_hs512_signed_token

SPEC: As a [User Role], I want [Feature] so that [Benefit]

SPEC-001-REQ-004: As an API consumer,
I want to pass JWT tokens in the Authorization header
so that my requests are authenticated without exposing tokens.
 
Related TEST:
- test_jwt_from_authorization_header
- test_jwt_in_query_param_rejected
- test_malformed_authorization_header

SPEC: [System] SHALL [Action] when [Boundary Condition]

SPEC-001-REQ-005: The authentication service SHALL return
HTTP 429 Too Many Requests when a single IP address
attempts more than 10 failed authentication attempts within 5 minutes.
 
Related TEST:
- test_rate_limit_after_10_failures
- test_rate_limit_window_5_minutes
- test_rate_limit_by_ip_address

DRAFT → ACTIVE → DEPRECATED → ARCHIVED
  ↓                  ↓
Under Review    Stable, In Use
  ↓                  ↓
Changes Expected    Changes Require
Feedback Pending    Major Version Bump

unwanted_behaviors:
  security:
    - The system SHALL NOT store JWT secrets in source code
    - The system SHALL NOT log JWT tokens or sensitive claims
    - The system SHALL NOT accept mixed algorithm tokens
 
  performance:
    - The system SHALL NOT block on token validation (async pattern)
    - The system SHALL NOT cache tokens indefinitely
 
  reliability:
    - The system SHALL NOT fail authentication if secondary cache is down
    - The system SHALL NOT accept malformed JSON Web Tokens
 
  data_integrity:
    - The system SHALL NOT modify token claims during validation
    - The system SHALL NOT accept tokens from untrusted issuers

      ↓
      ↓
      ↓

---
# SPEC-001: Feature Name
---

def test_requirement_001():
    """Test SPEC-001 REQ-001 universal pattern."""
    pass

def authenticate_user(token: str) -> bool:
    """Validate JWT token per SPEC-001."""
    pass

## Authentication Flow
Per SPEC-001, the system SHALL validate all JWT tokens...

SPEC-001-REQ-001: The system should authenticate users quickly.

SPEC-001-REQ-001: The authentication service SHALL validate JWT tokens
and return a response within 50ms on average,
with p99 latency not exceeding 200ms.

- The feature should work
- Tests should pass
- No obvious bugs

- [ ] All 12 test cases pass (unit + integration)
- [ ] Code coverage ≥85% (src/auth/validate.py)
- [ ] Security scan: OWASP Top 10 coverage complete
- [ ] Performance: JWT validation p99 latency ≤200ms

# (No unwanted_behaviors section)

unwanted_behaviors:
  security:
    - The system SHALL NOT store plaintext passwords
    - The system SHALL NOT log authentication tokens