# Session State
**Current Phase**: Complete - All Phase 3 work done
**Current Stage**: Complete
**Last Checkpoint**: 72229d6 (2026-01-04)
**Planning Docs**: `docs/BETTER_AUTH_ARCHITECTURE.md`, `docs/MODULAR_PLATFORM_CONCEPT.md`
---
## Phase 1: Multi-Layer Auth Directory Structure ✅
**Completed**: 2026-01-02 | **Checkpoint**: c87441c
**Summary**: Created modular auth architecture with identity/backend separation
## Phase 2: Multi-Provider Identity Authentication ✅
**Completed**: 2026-01-02 | **Checkpoint**: c87441c
**Summary**: Added Microsoft Entra and GitHub OAuth providers (now superseded by better-auth)
## Phase 3a: better-auth Core Setup ✅
**Completed**: 2026-01-02 | **Checkpoint**: 221fd5b
**Summary**: Replaced DIY OAuth with better-auth - D1 database, Drizzle ORM, social login (Google/Microsoft/GitHub)
Files created:
- `src/lib/auth.ts` - better-auth configuration with OAuth Provider plugin
- `src/lib/db/` - Drizzle ORM setup with D1
- `src/lib/db/schema.ts` - Complete better-auth schema + custom tables
- `src/pages/login.ts` - Social login page with provider buttons
- `migrations/0001_*.sql` through `0003_*.sql` - D1 migrations
## Phase 3b: MCP OAuth Integration ✅
**Completed**: 2026-01-03 | **Checkpoint**: 8cfe5ea
**Summary**: Integrated better-auth with workers-oauth-provider for MCP clients
### Key Changes
- `src/oauth/better-auth-handler.ts` - OAuth routes using better-auth sessions
- `src/oauth/workers-oauth-utils.ts` - Dark theme approval dialog, formatClientId()
- Added `jwks` table for better-auth v1.4.0 JWT key rotation
### Bugs Fixed
1. **Social sign-in 404** - better-auth requires JSON POST, not form-urlencoded
2. **Unknown Client display** - Added formatClientId() for UUID client IDs
3. **redirect_uri_mismatch** - Updated Google callback to `/api/auth/callback/google`
4. **JWKS table missing** - Added schema + migration for better-auth v1.4.0
### Testing Status
| Flow | Status | Notes |
|------|--------|-------|
| Google OAuth → MCP Client | ✅ | Full flow verified with Claude Code |
| Admin Dashboard Login | ✅ | Via better-auth session |
| Approval Dialog | ✅ | Dark theme, shows "MCP Client" |
---
## Architecture Overview
```
better-auth (L1: Identity)
├── Social Providers (Google, Microsoft, GitHub)
│ └── /api/auth/sign-in/social → /api/auth/callback/{provider}
│
├── workers-oauth-provider (MCP OAuth)
│ ├── /authorize → Approval dialog
│ ├── POST /authorize → Store state, redirect to /login
│ ├── /login → better-auth social login
│ └── /mcp-auth-complete → Complete MCP auth with session
│
└── Admin Dashboard
└── /admin → Requires better-auth session + ADMIN_EMAILS check
Layer 2: Shared Services (Admin-configured)
├── shared_service table - Admin OAuth connections
├── MCP Tool: list_calendar_events (uses admin token)
└── Admin UI: /admin/services/:id
Layer 3: User Services (Per-user connections)
├── user_service_token table - User OAuth connections
├── MCP Tool: list_my_calendar_events (uses user token)
└── User UI: /dashboard/services/connect
```
## Environment Configuration
```jsonc
// Required secrets:
// GOOGLE_CLIENT_ID, GOOGLE_CLIENT_SECRET
// BETTER_AUTH_SECRET (for session encryption)
// COOKIE_ENCRYPTION_KEY (for approved clients cookie)
// Optional (for alternative providers):
// MICROSOFT_CLIENT_ID, MICROSOFT_CLIENT_SECRET, MICROSOFT_TENANT_ID
// GITHUB_CLIENT_ID, GITHUB_CLIENT_SECRET
// Admin access:
// ADMIN_EMAILS (comma-separated)
```
---
## Phase 3c: Admin Features ✅
**Completed**: 2026-01-03 | **Checkpoint**: 615ea30
**Summary**: User management UI with list, search, role changes, ban/unban, impersonation
## Phase 3d: API Keys ✅
**Completed**: 2026-01-03 | **Checkpoint**: e3a79b8
**Summary**: better-auth apiKey plugin for programmatic MCP access
## Phase 3e: Organizations ✅
**Completed**: 2026-01-03 | **Checkpoint**: e3a79b8
**Summary**: Multi-tenant organization support with better-auth organization plugin
### Key Changes
- `src/lib/auth.ts` - Added organization plugin with owner/admin/member roles
- `src/lib/db/schema.ts` - Added organization, member, invitation, team, teamMember tables
- `src/admin/routes.ts` - Organization CRUD, members, invite endpoints
- `src/admin/ui.ts` - Organizations section with create/manage modal
- `migrations/0006_organization_support.sql` - Organization tables
- `migrations/0007_fix_organization_updated_at.sql` - Nullable updated_at fix
### API Endpoints
| Endpoint | Method | Description |
|----------|--------|-------------|
| `/api/admin/organizations` | GET | List user's organizations |
| `/api/admin/organizations` | POST | Create organization |
| `/api/admin/organizations/:id/members` | GET | List org members |
| `/api/admin/organizations/:id/invite` | POST | Invite member |
| `/api/admin/organizations/:id` | DELETE | Delete organization |
### Bugs Fixed
1. **NOT NULL constraint on updated_at** - better-auth inserts `null` on create, fixed with migration 0007
2. **Double-nested members response** - `listMembers` returns `{members: [...]}`, was wrapping again
### Testing Verified
- ✅ Organization creation works
- ✅ Organizations list displays correctly
- ✅ Members modal shows count and user list
- ✅ Owner role displays in modal
---
## Phase 3f: Layer 2 - Shared Services ✅
**Completed**: 2026-01-03 | **Checkpoint**: 221fd5b
**Summary**: Admin-configurable shared services with encrypted storage and interactive OAuth
### Key Changes
- `shared_services` D1 table for storing service configs
- AES-GCM encryption for secrets (`src/lib/crypto.ts`)
- Admin UI: Services section with create/edit/delete modals
- Interactive OAuth flow: Authorize button → popup → callback → token storage
- Support for API key, OAuth, and Service Account types
### API Endpoints
| Endpoint | Method | Description |
|----------|--------|-------------|
| `/api/admin/services` | GET | List all shared services |
| `/api/admin/services` | POST | Create new service |
| `/api/admin/services/:id` | GET | Get service details (masked) |
| `/api/admin/services/:id` | PUT | Update service config |
| `/api/admin/services/:id` | DELETE | Delete service |
| `/api/admin/services/:id/authorize` | POST | Start OAuth flow |
| `/api/admin/services/:id/disconnect` | POST | Revoke OAuth connection |
| `/api/admin/services/callback` | GET | OAuth callback handler |
---
## Phase 3g: Layer 3 - User Services ✅
**Completed**: 2026-01-03 | **Checkpoint**: 1e53a7b
**Summary**: User service connections with OAuth flow and token refresh
**Progress**:
- [x] `user_service_token` table exists in schema
- [x] User dashboard route (/dashboard)
- [x] User dashboard UI with profile and service cards
- [x] Service connection modal (lists OAuth shared services)
- [x] OAuth flow for user service connections
- [x] Token refresh automation (`src/lib/user-services.ts`)
- [x] Test with real Google Calendar connection
### Bugs Fixed
1. **Route collision** - OAuth callback at `/api/admin/services/callback` returned "Service not found" because it was defined AFTER `/:id` route. Moved static routes before dynamic routes.
2. **Closure capture bug** - OAuth popup completion handler used stale `currentServiceId` (captured by reference). Fixed by capturing value at call time.
### Next Session Notes
- **UI Enhancement**: Consider replacing service modals with dedicated pages (`/admin/services/:id`) for cleaner UX
**Key Files**:
- `src/index.ts` - Dashboard route handler
- `src/pages/dashboard.ts` - Dashboard HTML/JS
- `src/dashboard/routes.ts` - Dashboard API routes
- `src/lib/user-services.ts` - Token management utilities
### API Endpoints
| Endpoint | Method | Description |
|----------|--------|-------------|
| `/api/dashboard/services` | GET | List user's connected services |
| `/api/dashboard/services/available` | GET | List OAuth services available to connect |
| `/api/dashboard/services/connect` | POST | Start OAuth flow for user service |
| `/api/dashboard/services/:id` | DELETE | Disconnect a user service |
| `/api/dashboard/services/callback` | GET | OAuth callback handler |
---
## Phase 3h: Cleanup + Testing ✅
**Completed**: 2026-01-04 | **Checkpoint**: 72229d6
**Summary**: Converted modals to pages, created Layer 2/3 calendar tools, verified all OAuth flows
**Tasks Completed**:
- [x] Replace admin service modals with dedicated page (`/admin/services/:id`)
- [x] Replace user dashboard modals with dedicated page (`/dashboard/services/connect`)
- [x] Add "Connected as: email" display for authorized services
- [x] Create Layer 2 MCP tool (`list_calendar_events` using shared service token)
- [x] Create Layer 3 MCP tool (`list_my_calendar_events` using user service token)
- [x] Comprehensive test of admin + user OAuth flows
**New Files**:
- `src/pages/admin-service-detail.ts` - Full admin service detail page
- `src/pages/dashboard-connect-service.ts` - User service connection page
- `src/tools/calendar.ts` - Calendar tools for Layer 2 & Layer 3
- `src/lib/shared-services.ts` - Shared service token utilities
---
## Known Issues
None
## Next Action
Template is feature-complete. Ready for use as starting point for new MCP server projects.
## Future Enhancements
- Consider adding more OAuth providers (Slack, Notion, etc.)
- Add service usage analytics dashboard
- Implement webhook support for real-time updates
## Key Files
- `src/lib/auth.ts` - better-auth configuration
- `src/lib/db/schema.ts` - Drizzle schema (better-auth + custom tables)
- `src/lib/shared-services.ts` - Layer 2 shared service utilities
- `src/lib/user-services.ts` - Layer 3 user service utilities
- `src/oauth/better-auth-handler.ts` - MCP OAuth routes
- `src/pages/login.ts` - Social login page
- `src/pages/admin-service-detail.ts` - Admin service configuration page
- `src/pages/dashboard-connect-service.ts` - User service connection page
- `src/tools/calendar.ts` - Calendar MCP tools (Layer 2 + 3)
- `docs/BETTER_AUTH_ARCHITECTURE.md` - Full architecture plan
