# Product Requirements Document (PRD) - AuthKit
## 1. Executive Summary
AuthKit is a comprehensive, cross-platform authentication SDK designed to provide unified identity and access management capabilities across multiple programming languages and frameworks. It offers a consistent API surface across Rust, TypeScript/JavaScript, Python, and Go implementations, enabling teams to build secure authentication flows regardless of their technology stack.
**Vision**: To become the de facto standard for authentication SDKs in the Phenotype ecosystem, providing battle-tested, secure, and ergonomic authentication primitives that work seamlessly across language boundaries.
**Mission**: Deliver a unified authentication experience that abstracts away protocol complexity while maintaining full standards compliance (OAuth 2.0, OIDC, SAML 2.0, WebAuthn).
**Current Status**: Active development with core OAuth/OIDC flows implemented across all language bindings.
---
## 2. Problem Statement
### 2.1 Current Challenges
Organizations building multi-service architectures face significant authentication challenges:
**Language Fragmentation**: Different programming languages require different authentication libraries, each with unique APIs, behaviors, and security postures. This creates:
- Inconsistent security implementations across services
- Duplicated effort in implementing standard protocols
- Increased cognitive load for developers switching between codebases
- Difficulties in audit and compliance verification
**Protocol Complexity**: Modern authentication involves multiple complex protocols:
- OAuth 2.0 with its various grant types (Authorization Code, Client Credentials, Device Code, PKCE)
- OpenID Connect for identity layer on top of OAuth 2.0
- SAML 2.0 for enterprise single sign-on
- WebAuthn/Passkeys for passwordless authentication
- JWT handling with proper validation and refresh logic
Each protocol requires deep expertise to implement securely, and mistakes are common and costly.
**Security Surface Area**: Authentication is security-critical. Vulnerabilities include:
- Token storage and transmission issues
- Improper session management
- CSRF and XSS vulnerabilities in OAuth flows
- Incorrect JWT validation (algorithm confusion, expiration handling)
- Insecure secret management
**Integration Friction**: Connecting to multiple identity providers (IdPs) requires:
- Custom integrations for each provider (Auth0, Okta, AWS Cognito, Keycloak, etc.)
- Handling provider-specific quirks and non-standard behaviors
- Maintaining integration code as IdP APIs evolve
### 2.2 Impact
Without a unified authentication solution:
- Development velocity slows due to repeated authentication implementation
- Security vulnerabilities proliferate across services
- Operational complexity increases with heterogeneous auth systems
- User experience degrades with inconsistent authentication flows
- Compliance (SOC 2, ISO 27001, GDPR) becomes harder to achieve
### 2.3 Target Solution
AuthKit addresses these challenges by providing:
1. **Language-Unified API**: Same concepts, patterns, and method names across Rust, TS, Python, and Go
2. **Protocol Abstraction**: Handle OAuth/OIDC/SAML complexity internally
3. **Security-First Design**: Secure defaults, automatic best practices, built-in protections
4. **Provider Agnostic**: Single integration point for multiple IdPs
5. **Developer Ergonomics**: Type-safe, well-documented, with excellent IDE support
---
## 3. Target Users & Personas
### 3.1 Primary Personas
#### Alex - Backend Developer (Rust/Go)
- **Role**: Senior backend engineer building microservices
- **Pain Points**: Needs to secure APIs across multiple services; worried about auth vulnerabilities
- **Goals**: Drop-in authentication with minimal configuration; strong type safety
- **Technical Level**: Expert
- **Usage Pattern**: Server-side token validation, API protection, service-to-service auth
#### Maya - Full-Stack Developer (TypeScript)
- **Role**: Full-stack developer building React/Vue/Next.js applications
- **Pain Points**: Complex OAuth flows in SPAs; token refresh handling; session management
- **Goals**: Simple hooks/components for auth; automatic token refresh; SSR compatibility
- **Technical Level**: Intermediate
- **Usage Pattern**: Client-side auth flows, protected routes, API integration
#### David - Python Developer (ML/Data)
- **Role**: Data engineer building internal tools and APIs
- **Pain Points**: Needs quick authentication for Jupyter notebooks, FastAPI apps
- **Goals**: Simple API key management, quick OAuth integration
- **Technical Level**: Intermediate
- **Usage Pattern**: API authentication, notebook environments, internal tooling
#### Sarah - Platform Engineer
- **Role**: Platform/infrastructure engineer standardizing auth across org
- **Pain Points**: Teams using different auth libraries; security inconsistencies
- **Goals**: Single SDK for all teams; audit logging; policy enforcement
- **Technical Level**: Expert
- **Usage Pattern**: Infrastructure setup, policy configuration, compliance audit
### 3.2 Secondary Personas
#### Jordan - Mobile Developer
- **Role**: iOS/Android developer using React Native/Flutter
- **Pain Points**: Mobile-specific OAuth challenges (deep links, app-to-app)
- **Goals**: Secure token storage (Keychain/Keystore), biometric authentication
#### Taylor - DevOps Engineer
- **Role**: CI/CD and deployment automation
- **Pain Points**: Service account authentication, machine-to-machine auth
- **Goals**: Client credentials flow, workload identity, automated token management
### 3.3 User Needs Matrix
| Type Safety | Critical | Important | Nice | Critical | Important | Nice |
| Quick Setup | Nice | Critical | Critical | Important | Important | Important |
| Provider Flexibility | Important | Nice | Nice | Critical | Important | Critical |
| Security Defaults | Critical | Important | Nice | Critical | Critical | Critical |
| Documentation Quality | Important | Critical | Critical | Nice | Important | Nice |
| Enterprise Features | Nice | Nice | Nice | Critical | Nice | Critical |
---
## 4. Functional Requirements
### 4.1 Core Authentication Flows
#### FR-AUTH-001: OAuth 2.0 Authorization Code Flow with PKCE
**Priority**: P0 (Critical)
**Description**: Implement RFC 7636 PKCE extension for secure public client authentication
**Acceptance Criteria**:
- Generate cryptographically random code verifier and challenge
- Support S256 and plain code challenge methods
- Automatic state parameter generation and validation
- Secure redirect URI validation
**Cross-Language**: Must be identical across all language implementations
#### FR-AUTH-002: OAuth 2.0 Client Credentials Flow
**Priority**: P0 (Critical)
**Description**: Machine-to-machine authentication for service accounts
**Acceptance Criteria**:
- Client ID/secret or certificate-based authentication
- Automatic token caching with TTL awareness
- Token refresh before expiration
- Support for custom claims and scopes
#### FR-AUTH-003: OAuth 2.0 Device Authorization Flow
**Priority**: P1 (High)
**Description**: Device code flow for input-constrained devices
**Acceptance Criteria**:
- Initiate device code request
- Poll token endpoint with exponential backoff
- Display user code and verification URI
- Handle authorization pending, slow_down, and access_denied states
#### FR-AUTH-004: OpenID Connect Integration
**Priority**: P0 (Critical)
**Description**: Full OIDC support with ID token validation
**Acceptance Criteria**:
- Discovery from .well-known/openid-configuration
- ID token validation (signature, issuer, audience, expiration, nonce)
- UserInfo endpoint support
- Claims extraction and normalization
- Session management via OIDC
#### FR-AUTH-005: SAML 2.0 Support
**Priority**: P1 (High)
**Description**: Enterprise SSO via SAML 2.0
**Acceptance Criteria**:
- SP-initiated SSO
- IdP-initiated SSO
- SAML response validation (signature, conditions, audience)
- Assertion extraction and mapping
- Metadata generation and consumption
### 4.2 Token Management
#### FR-TOKEN-001: JWT Handling
**Priority**: P0 (Critical)
**Description**: Secure JWT parsing, validation, and generation
**Acceptance Criteria**:
- Support RS256, RS384, RS512, ES256, ES384, ES512, EdDSA
- Algorithm whitelist/blacklist capability
- Proper audience, issuer, and expiration validation
- JWK and JWKS key resolution
- Secure key handling in memory
#### FR-TOKEN-002: Token Storage
**Priority**: P1 (High)
**Description**: Secure token persistence with encryption
**Acceptance Criteria**:
- Platform-specific secure storage (Keychain, Keystore, Windows Credential)
- In-memory only option for server-side
- Encrypted at rest with AES-256-GCM
- Automatic cleanup on logout
- Token binding to device/context where applicable
#### FR-TOKEN-003: Token Refresh
**Priority**: P0 (Critical)
**Description**: Automatic access token refresh using refresh tokens
**Acceptance Criteria**:
- Proactive refresh before expiration (configurable threshold)
- Refresh token rotation support
- Concurrency-safe refresh (single request for multiple pending)
- Failure handling with fallback to re-authentication
- Absolute lifetime tracking for refresh tokens
#### FR-TOKEN-004: Session Management
**Priority**: P1 (High)
**Description**: Track and manage user sessions
**Acceptance Criteria**:
- Session creation on successful authentication
- Session metadata (IP, user agent, creation time, last access)
- Session list retrieval
- Remote session revocation
- Idle timeout and absolute timeout handling
### 4.3 Identity Provider Integration
#### FR-IDP-001: Generic OIDC Provider
**Priority**: P0 (Critical)
**Description**: Support any OIDC-compliant IdP
**Acceptance Criteria**:
- Discovery-based configuration
- Custom claims mapping
- Non-standard endpoint support
- Custom scope handling
#### FR-IDP-002: Auth0
**Priority**: P0 (Critical)
**Description**: Native Auth0 integration
**Acceptance Criteria**:
- Auth0-specific endpoints
- Organization support
- Multi-factor authentication trigger
- Action/Rule compatibility
#### FR-IDP-003: Okta
**Priority**: P1 (High)
**Description**: Native Okta integration
**Acceptance Criteria**:
- Okta domain configuration
- Okta-specific features (FastPass, device trust)
- Workforce and Customer identity clouds
#### FR-IDP-004: AWS Cognito
**Priority**: P1 (High)
**Description**: AWS Cognito integration
**Acceptance Criteria**:
- User Pool and Identity Pool support
- Cognito-specific claims handling
- AWS credential vending
#### FR-IDP-005: Azure AD / Entra ID
**Priority**: P1 (High)
**Description**: Microsoft identity platform
**Acceptance Criteria**:
- v2.0 endpoint support
- Microsoft Graph integration
- Conditional Access handling
#### FR-IDP-006: Keycloak
**Priority**: P2 (Medium)
**Description**: Open source Keycloak integration
**Acceptance Criteria**:
- Realm configuration
- Keycloak-specific features
### 4.4 Multi-Factor Authentication
#### FR-MFA-001: TOTP Support
**Priority**: P1 (High)
**Description**: Time-based One-Time Password (RFC 6238)
**Acceptance Criteria**:
- TOTP generation and validation
- QR code generation for setup
- Secret key import/export
- Multiple authenticator app support
#### FR-MFA-002: WebAuthn/Passkeys
**Priority**: P1 (High)
**Description**: FIDO2/WebAuthn for passwordless authentication
**Acceptance Criteria**:
- Registration ceremony
- Authentication ceremony
- Resident key support (discoverable credentials)
- Platform vs. roaming authenticator handling
- Passkey synchronization awareness
#### FR-MFA-003: SMS/Email OTP
**Priority**: P2 (Medium)
**Description**: One-time passwords via SMS or email
**Acceptance Criteria**:
- OTP generation
- Channel delivery abstraction
- Rate limiting
- Brute force protection
### 4.5 Passwordless Authentication
#### FR-PWDLESS-001: Magic Links
**Priority**: P2 (Medium)
**Description**: Email-based passwordless authentication
**Acceptance Criteria**:
- Secure token generation
- Email delivery integration
- Token expiration handling
- Multi-device link handling
#### FR-PWDLESS-002: Biometric Authentication
**Priority**: P2 (Medium)
**Description**: Platform biometric APIs (Face ID, Touch ID, Windows Hello)
**Acceptance Criteria**:
- Platform API abstraction
- Biometric availability detection
- Fallback handling
- Secure credential binding
### 4.6 API Security
#### FR-API-001: Bearer Token Validation
**Priority**: P0 (Critical)
**Description**: Middleware for API endpoint protection
**Acceptance Criteria**:
- Extract token from Authorization header
- Validate signature and claims
- Return 401/403 appropriately
- Context propagation with claims
#### FR-API-002: Scope-Based Authorization
**Priority**: P1 (High)
**Description**: Enforce OAuth scopes on endpoints
**Acceptance Criteria**:
- Declarative scope requirements
- Scope hierarchy support
- Custom authorization logic hooks
- Combined scope and role checking
#### FR-API-003: CORS Handling
**Priority**: P1 (High)
**Description**: Cross-Origin Resource Sharing configuration
**Acceptance Criteria**:
- Configurable allowed origins
- Preflight handling
- Credential handling
- Header exposure control
---
## 5. Non-Functional Requirements
### 5.1 Security Requirements
#### NFR-SEC-001: Secure Defaults
**Priority**: P0 (Critical)
**Description**: All defaults must be the most secure option
**Requirements**:
- PKCE enabled by default for public clients
- Strongest algorithms preferred
- Short token lifetimes by default
- Encryption enabled for storage
- State parameter always used
#### NFR-SEC-002: Cryptographic Standards
**Priority**: P0 (Critical)
**Description**: Use industry-standard cryptographic implementations
**Requirements**:
- No custom crypto implementations
- Use platform-approved libraries (ring, OpenSSL, CryptoKit, etc.)
- FIPS 140-2 compliance mode available
- Post-quantum preparation (algorithm agility)
#### NFR-SEC-003: Secret Management
**Priority**: P0 (Critical)
**Description**: Secure handling of client secrets and keys
**Requirements**:
- Zero secrets in code
- Environment variable or secure vault integration
- Memory scrubbing on cleanup
- No logging of secrets
#### NFR-SEC-004: Audit Logging
**Priority**: P1 (High)
**Description**: Comprehensive security event logging
**Requirements**:
- Authentication attempts (success and failure)
- Token issuance and validation
- Session creation and termination
- Configuration changes
- Structured logs with correlation IDs
#### NFR-SEC-005: Vulnerability Response
**Priority**: P0 (Critical)
**Description**: Process for handling security issues
**Requirements**:
- Security advisory process
- CVE tracking and disclosure
- Patch SLAs (critical: 24h, high: 7d, medium: 30d)
- Automated dependency vulnerability scanning
### 5.2 Performance Requirements
#### NFR-PERF-001: Token Validation Latency
**Priority**: P1 (High)
**Description**: Fast JWT validation for API protection
**Requirements**:
- < 1ms for local validation (cached keys)
- < 10ms for remote JWKS fetch
- Connection pooling for JWKS endpoints
- Background key refresh
#### NFR-PERF-002: Memory Footprint
**Priority**: P1 (High)
**Description**: Efficient memory usage
**Requirements**:
- < 10MB base footprint
- Bounded caches with LRU eviction
- Streaming response processing where applicable
- Memory pool reuse for allocations
#### NFR-PERF-003: Concurrency
**Priority**: P1 (High)
**Description**: Handle concurrent authentication requests
**Requirements**:
- Lock-free token cache where possible
- Connection pooling
- Non-blocking I/O support
- Rate limiting per client
### 5.3 Reliability Requirements
#### NFR-REL-001: IdP Resilience
**Priority**: P1 (High)
**Description**: Handle IdP unavailability gracefully
**Requirements**:
- Cached JWKS for offline validation
- Retry with exponential backoff
- Circuit breaker pattern for failing endpoints
- Graceful degradation options
#### NFR-REL-002: Backward Compatibility
**Priority**: P1 (High)
**Description**: Maintain API stability
**Requirements**:
- Semantic versioning
- Deprecation notices (minimum 2 major versions)
- Migration guides for breaking changes
- Feature flags for gradual rollout
### 5.4 Usability Requirements
#### NFR-USE-001: Developer Experience
**Priority**: P0 (Critical)
**Description**: Excellent developer onboarding
**Requirements**:
- Quick start guides for each language
- Interactive tutorials
- Clear error messages with remediation
- Debug logging and tracing
#### NFR-USE-002: Documentation
**Priority**: P0 (Critical)
**Description**: Comprehensive documentation
**Requirements**:
- API reference for all public methods
- Protocol implementation guides
- Security best practices
- Provider-specific setup guides
#### NFR-USE-003: IDE Support
**Priority**: P1 (High)
**Description**: Excellent IDE integration
**Requirements**:
- Full type information
- Auto-completion
- Inline documentation
- Type hints (Python), JSDoc (TS)
### 5.5 Compliance Requirements
#### NFR-COMP-001: Standards Compliance
**Priority**: P0 (Critical)
**Description**: Adherence to authentication standards
**Requirements**:
- OAuth 2.0 RFC 6749 compliant
- OIDC Core 1.0 compliant
- OAuth 2.1 draft compliance
- FAPI 2.0 advanced support (optional)
#### NFR-COMP-002: Regulatory Compliance
**Priority**: P1 (High)
**Description**: Support regulatory requirements
**Requirements**:
- GDPR data handling
- CCPA compliance
- SOC 2 Type II audit support
- HIPAA BAA available
---
## 6. User Stories
### 6.1 Authentication Flow Stories
#### US-AUTH-001: Web Application Login
**As a** user of a web application
**I want to** log in using my corporate Google account
**So that** I can access protected resources without creating a new password
**Acceptance Criteria**:
- Clicking "Sign in with Google" initiates OAuth flow
- I see the Google consent screen
- After consent, I'm redirected back and logged in
- My session persists across page reloads
#### US-AUTH-002: API Access from Mobile App
**As a** mobile app user
**I want to** access backend APIs securely
**So that** my data is protected
**Acceptance Criteria**:
- App uses PKCE flow for authentication
- Tokens are stored in device Keychain/Keystore
- API calls include valid access tokens
- Tokens refresh automatically when expired
#### US-AUTH-003: Service-to-Service Communication
**As a** backend service
**I want to** call another service's API securely
**So that** we can communicate without user context
**Acceptance Criteria**:
- Service authenticates using client credentials
- Tokens are cached and reused
- Failed tokens trigger automatic refresh
- Service identity is verifiable by callee
### 6.2 Security Stories
#### US-SEC-001: Enforce MFA
**As a** security administrator
**I want to** require MFA for sensitive operations
**So that** compromised passwords aren't sufficient for access
**Acceptance Criteria**:
- Can configure MFA requirement per application
- Users are prompted to set up MFA on first login
- Sensitive operations trigger MFA challenge
- Recovery codes provided for account recovery
#### US-SEC-002: Detect Suspicious Login
**As a** security team member
**I want to** be alerted to suspicious authentication patterns
**So that** I can respond to potential breaches
**Acceptance Criteria**:
- Impossible travel detection
- New device notifications
- Multiple failed login attempt alerts
- Risk score calculation
#### US-SEC-003: Session Management
**As a** user
**I want to** see and manage my active sessions
**So that** I can revoke access from lost or stolen devices
**Acceptance Criteria**:
- Session list shows device, location, last access
- Can terminate individual sessions
- Can terminate all sessions except current
- Email notification on session termination
### 6.3 Developer Experience Stories
#### US-DEV-001: Quick Integration
**As a** developer
**I want to** add authentication to my app in under 30 minutes
**So that** I can focus on business logic
**Acceptance Criteria**:
- Installation via package manager
- Configuration with minimal code
- Pre-built UI components (where applicable)
- Working example in 5 minutes
#### US-DEV-002: Debug Authentication Issues
**As a** developer
**I want to** understand why authentication failed
**So that** I can fix configuration issues
**Acceptance Criteria**:
- Detailed error messages
- Request/response logging (sanitized)
- Token inspection tools
- Protocol trace capability
#### US-DEV-003: Test Authentication Flows
**As a** developer
**I want to** automate authentication in tests
**So that** my CI/CD pipeline validates auth flows
**Acceptance Criteria**:
- Test helpers for token generation
- Mock IdP for integration testing
- Token expiration simulation
- Session state manipulation
---
## 7. Feature Specifications
### 7.1 Core SDK Structure
#### 7.1.1 Language-Specific Organization
```
AuthKit/
├── rust/
│ ├── authkit-core/ # Core traits and types
│ ├── authkit-oauth/ # OAuth 2.0 implementation
│ ├── authkit-oidc/ # OIDC implementation
│ ├── authkit-saml/ # SAML 2.0 implementation
│ └── authkit-webauthn/ # WebAuthn implementation
├── typescript/
│ ├── packages/
│ │ ├── core/ # Shared types
│ │ ├── browser/ # Browser-specific flows
│ │ ├── node/ # Server-side implementation
│ │ ├── react/ # React hooks and components
│ │ └── nextjs/ # Next.js integration
├── python/
│ ├── authkit/ # Main package
│ ├── authkit-fastapi/ # FastAPI integration
│ └── authkit-django/ # Django integration
└── go/
├── authkit/ # Core module
├── authkit-gin/ # Gin middleware
└── authkit-echo/ # Echo middleware
```
#### 7.1.2 Common Abstractions
**Client Configuration**:
```rust
// Rust example
pub struct AuthClient {
client_id: String,
client_secret: Option<String>,
redirect_uri: Url,
scopes: Vec<String>,
provider: Box<dyn IdentityProvider>,
storage: Box<dyn TokenStorage>,
}
```
**Authentication Result**:
```typescript
// TypeScript example
interface AuthenticationResult {
accessToken: string;
refreshToken?: string;
idToken?: string;
expiresIn: number;
scope: string;
tokenType: "Bearer";
}
```
### 7.2 OAuth 2.0 Implementation
#### 7.2.1 Authorization Code Flow with PKCE
**Flow Steps**:
1. Generate code_verifier (128 bytes random)
2. Generate code_challenge = BASE64URL(SHA256(code_verifier))
3. Redirect to /authorize with challenge and method
4. Receive authorization code on callback
5. Exchange code for tokens with verifier
**Security Considerations**:
- State parameter required (CSRF protection)
- Redirect URI must match registration exactly
- Code single-use only
- Short code lifetime (10 minutes max)
#### 7.2.2 Token Endpoint Handling
**Request**:
```
POST /oauth/token
Content-Type: application/x-www-form-urlencoded
grant_type=authorization_code
&code=AUTH_CODE
&redirect_uri=REDIRECT_URI
&client_id=CLIENT_ID
&code_verifier=VERIFIER
```
**Response**:
```json
{
"access_token": "eyJ...",
"token_type": "Bearer",
"expires_in": 3600,
"refresh_token": "def502...",
"scope": "read write"
}
```
### 7.3 JWT Implementation
#### 7.3.1 Token Structure Support
**Header**:
```json
{
"alg": "RS256",
"typ": "JWT",
"kid": "key-id-1"
}
```
**Claims**:
- Registered: iss, sub, aud, exp, nbf, iat, jti
- Public: scope, permissions, roles
- Custom: Any additional claims
#### 7.3.2 Validation Steps
1. **Signature Verification**:
- Fetch JWKS from issuer
- Find key by kid
- Verify using algorithm from header
2. **Claim Validation**:
- exp: Must be in future
- nbf: Must be in past
- iat: Reasonable (not future)
- iss: Must match expected issuer
- aud: Must include this API
- sub: Present and valid format
### 7.4 Storage Implementation
#### 7.4.1 Secure Storage Abstraction
**Interface** (TypeScript example):
```typescript
interface SecureStorage {
removeItem(key: string): Promise<void>;
}
```
**Platform Implementations**:
- **iOS**: Keychain (kSecClassGenericPassword)
- **Android**: Keystore + EncryptedSharedPreferences
- **macOS**: Keychain
- **Windows**: Credential Manager / DPAPI
- **Linux**: Secret Service API / file-based with encryption
- **Browser**: Memory only (with refresh on reload)
- **Server**: Configurable (memory, Redis, database)
### 7.5 Provider Integration
#### 7.5.1 OIDC Discovery
**Discovery URL**: `https://issuer/.well-known/openid-configuration`
**Required Endpoints**:
- authorization_endpoint
- token_endpoint
- userinfo_endpoint
- jwks_uri
- issuer
**Cache Strategy**:
- Cache discovery response for TTL (default: 24 hours)
- Background refresh at 80% of TTL
- Fallback to stale cache on fetch failure
#### 7.5.2 Provider-Specific Extensions
**Auth0**:
- Organization parameter support
- Invitation handling
- Login hint for screen_hint=signup
**Okta**:
- IdP routing rules
- Device trust challenge
- FastPass integration
**AWS Cognito**:
- Identity pool integration
- AWS credential exchange
- Custom challenge handling
---
## 8. Success Metrics
### 8.1 Adoption Metrics
| SDK Downloads | 0 | 10,000 | 50,000 |
| Active Projects | 0 | 100 | 500 |
| GitHub Stars | 0 | 500 | 2,000 |
| Contributing Orgs | 0 | 10 | 25 |
### 8.2 Technical Metrics
| Token Validation Latency | < 1ms p99 | Benchmark tests |
| Memory Footprint | < 10MB | Profiling |
| Test Coverage | > 90% | Code coverage reports |
| Security Scan | 0 critical/high | Snyk/Semgrep weekly |
| Documentation Coverage | 100% public APIs | Doc generation |
### 8.3 User Satisfaction Metrics
| Integration Time | < 30 minutes | User surveys |
| Developer NPS | > 50 | Quarterly surveys |
| Support Ticket Volume | < 5/week | Ticket tracking |
| Documentation Rating | > 4.5/5 | Feedback widget |
### 8.4 Business Metrics
| Cost Savings vs Custom Auth | $500K/year | 12 months |
| Security Incidents Prevented | 0 major | Ongoing |
| Time to Security Audit | < 2 weeks | Per audit |
| Multi-language Standardization | 80% adoption | 12 months |
---
## 9. Release Criteria
### 9.1 Version 1.0 (MVP)
**Target Date**: Q2 2026
**Must Have**:
- [ ] OAuth 2.0 Authorization Code + PKCE (all languages)
- [ ] OAuth 2.0 Client Credentials (all languages)
- [ ] OIDC Core 1.0 support (all languages)
- [ ] JWT validation with JWKS
- [ ] Token storage with platform secure storage
- [ ] Generic OIDC provider support
- [ ] Auth0 native integration
- [ ] Bearer token API middleware
- [ ] Documentation and quick start guides
- [ ] 90% test coverage
- [ ] Security audit passed
**Release Checklist**:
- [ ] All P0 requirements implemented
- [ ] Security review completed
- [ ] Performance benchmarks meet targets
- [ ] Documentation published
- [ ] Example applications working
- [ ] CI/CD pipeline operational
- [ ] Community guidelines published
- [ ] Support channels established
### 9.2 Version 1.1
**Target Date**: Q3 2026
**Features**:
- SAML 2.0 support
- Device Authorization flow
- Okta and AWS Cognito native integrations
- MFA TOTP support
- Session management UI
### 9.3 Version 2.0
**Target Date**: Q1 2027
**Features**:
- WebAuthn/Passkeys support
- Enterprise federation
- Advanced policy engine
- Analytics dashboard
- Machine identity (SPIFFE/SPIRE)
### 9.4 Exit Criteria
**Ready for Release When**:
1. All defined acceptance criteria met
2. No P0 or P1 bugs open
3. Security audit passed with no critical findings
4. Performance benchmarks within targets
5. Documentation complete and reviewed
6. Compatibility testing passed (all supported platforms)
7. Rollback plan documented and tested
---
## 10. Appendix
### 10.1 Glossary
- **IdP**: Identity Provider - Service that authenticates users (Auth0, Okta, etc.)
- **OIDC**: OpenID Connect - Identity layer on top of OAuth 2.0
- **PKCE**: Proof Key for Code Exchange - Security extension for OAuth
- **JWKS**: JSON Web Key Set - Set of keys for JWT validation
- **MFA**: Multi-Factor Authentication - Additional authentication factors
- **SP**: Service Provider - Application consuming authentication (AuthKit clients)
- **SSO**: Single Sign-On - Authenticate once, access multiple services
### 10.2 Reference Documents
- OAuth 2.0 RFC 6749
- OAuth 2.0 for Native Apps RFC 8252
- PKCE RFC 7636
- OpenID Connect Core 1.0
- SAML 2.0 Core Specification
- WebAuthn Level 2
- JWT RFC 7519
- JWS RFC 7515
- JWE RFC 7516
### 10.3 Competitive Analysis
| Multi-Language | 4+ | 5 | 3 | 3 |
| Unified API | Yes | No | No | No |
| Self-Hosted | Yes | No | No | Yes |
| Protocol Coverage | OAuth/OIDC/SAML | OAuth/OIDC | OAuth/OIDC/SAML | OAuth/OIDC/SAML |
| Open Source | Yes | No | No | Yes |
| Enterprise Support | Yes | Yes | Yes | Limited |
---
*Document Version*: 1.0
*Last Updated*: 2026-04-05
*Author*: Phenotype Architecture Team
*Status*: Draft for Review