Raindrop.io MCP Server

## ✅ Epic: Complete HTTP SSE Transport Implementation ### Overview This epic tracks the complete implementation of HTTP Server-Sent Events (SSE) transport support for the Raindrop MCP server, bringing it up to the latest Model Context Protocol specifications while maintaining backwards compatibility. ### Goals - ✅ Enable web-based MCP client integrations - ✅ Support latest MCP transport specifications (2024-11-05) - ✅ Maintain backwards compatibility with existing clients - ✅ Provide comprehensive development tooling - ✅ Create thorough documentation and examples ### User Stories #### As a Web Developer - **I want** to integrate Raindrop MCP with browser-based applications - **So that** I can build web UIs that interact with Raindrop.io bookmarks - **Acceptance**: CORS-enabled HTTP endpoints with modern transport #### As an API Consumer - **I want** multiple transport options (STDIO, HTTP, SSE) - **So that** I can choose the best transport for my deployment scenario - **Acceptance**: All transport types work with same MCP service #### As a Developer - **I want** proper development tooling and debugging capabilities - **So that** I can efficiently develop and troubleshoot MCP integrations - **Acceptance**: Scripts, VS Code tasks, and Inspector integration #### As a DevOps Engineer - **I want** health monitoring and status endpoints - **So that** I can monitor MCP server health in production - **Acceptance**: `/health` endpoint with session and status information ### Epic Issues #### 🚀 Core Implementation - [ ] **#XX** - [Implement HTTP SSE Transport Support](http-sse-implementation.md) - Primary feature implementation - Modern Streamable HTTP transport - Legacy SSE backwards compatibility - Session management and CORS #### 🔧 Development Tooling - [ ] **#XX** - [Add Development Scripts and Tools](development-tooling.md) - Package.json scripts for HTTP development - Test client with auto-fallback - VS Code task integration - MCP Inspector support #### 📚 Documentation - [ ] **#XX** - [Create HTTP SSE Setup Guide](documentation-guide.md) - Comprehensive setup documentation - API reference and examples - Migration guide from STDIO - Troubleshooting and integration examples #### 🔄 Code Quality - [ ] **#XX** - [Modernize Legacy SSE Implementation](modernize-sse.md) - Refactor existing SSE server - Align with new HTTP server patterns - Improve error handling and session management ### Implementation Phases #### Phase 1: Core Transport (Week 1) - ✅ Implement `StreamableHTTPServerTransport` - ✅ Add backwards-compatible SSE support - ✅ Basic session management - ✅ CORS and middleware setup #### Phase 2: Development Experience (Week 1) - ✅ Add development scripts - ✅ Create test client - ✅ VS Code task integration - ✅ MCP Inspector support #### Phase 3: Documentation (Week 2) - [ ] Setup and usage guides - [ ] API reference documentation - [ ] Client integration examples - [ ] Troubleshooting guides #### Phase 4: Refinement (Week 2) - [ ] Modernize legacy SSE server - [ ] Performance optimization - [ ] Additional testing - [ ] Community feedback integration ### Technical Architecture #### Transport Support Matrix | Transport Type | Status | Use Case | Endpoint | |---------------|--------|----------|----------| | STDIO | ✅ Existing | Command-line tools | Process I/O | | Streamable HTTP | ✅ **New** | Modern web clients | `/mcp` | | Legacy SSE | ✅ **New** | Backwards compatibility | `/sse` + `/messages` | #### Key Components - `src/http-server.ts` - Main HTTP server with both transports - `src/sse.ts` - Legacy SSE server (enhanced) - `src/test-client.ts` - Test client with fallback logic - `src/services/mcp.service.ts` - Core MCP service (unchanged) ### Success Metrics #### Functional Requirements - ✅ HTTP server starts and accepts connections - ✅ Both transport types work with same MCP service - ✅ Session management supports concurrent connections - ✅ Health endpoint provides monitoring data - ✅ CORS enables web client integration #### Quality Requirements - ✅ Zero breaking changes to existing STDIO clients - ✅ Test client validates both transport types - ✅ MCP Inspector integration works - ✅ Error handling provides clear feedback - ✅ Documentation covers all use cases #### Performance Requirements - [ ] Supports at least 10 concurrent HTTP connections - [ ] Session cleanup prevents memory leaks - [ ] Response times under 100ms for health checks - [ ] Graceful handling of connection failures ### Dependencies - `@modelcontextprotocol/sdk` ^1.12.1 (latest) - `express` for HTTP server framework - Node.js crypto module for session IDs - MCP Inspector for debugging ### Risks and Mitigations #### Risk: Breaking Changes - **Mitigation**: Maintain full backwards compatibility - **Validation**: Test existing STDIO clients #### Risk: Session Management Complexity - **Mitigation**: Use proven patterns from MCP documentation - **Validation**: Concurrent connection testing #### Risk: CORS Configuration Issues - **Mitigation**: Comprehensive CORS setup and testing - **Validation**: Browser client examples ### Rollout Plan #### Development Environment 1. ✅ Implement core features 2. ✅ Add development tooling 3. ✅ Create test scenarios 4. [ ] Documentation and examples #### Staging/Testing 1. [ ] Performance testing with multiple clients 2. [ ] Security validation for web deployment 3. [ ] Integration testing with various MCP clients 4. [ ] Load testing for concurrent connections #### Production Release 1. [ ] Update package version 2. [ ] Publish documentation 3. [ ] Announce new transport support 4. [ ] Provide migration guidance ### Future Enhancements - [ ] Authentication/authorization for HTTP endpoints - [ ] Rate limiting for production deployments - [ ] Metrics and telemetry collection - [ ] WebSocket transport support - [ ] Multi-server deployment patterns --- **Epic Status**: ✅ **Phase 1-2 Complete, Phase 3-4 In Progress** **Timeline**: 2 weeks **Impact**: High - Enables modern web integrations while maintaining compatibility