Simplenote MCP Server

# Simplenote MCP Server v1.7.0 Release Notes *Released on August 26, 2025* ## 🚀 Major Release: Phase 3 Observability & Release Engineering This major release completes Phase 3 of our development roadmap, introducing comprehensive observability, performance monitoring, and release engineering improvements. Version 1.7.0 represents a significant step forward in production readiness and operational excellence. ## 🎯 **Phase 3 Achievements** ### ✨ **New Features** #### 🔍 **Advanced Performance Monitoring** - **HTTP Health & Metrics Endpoints**: Production-ready `/health`, `/ready`, and `/metrics` endpoints for monitoring and observability - **Latency Histogram Tracking**: Comprehensive P50, P90, P95, P99 percentile tracking with configurable buckets - **Cache Efficacy Metrics**: Advanced cache performance analysis with hit streaks, efficacy scoring, and memory utilization - **Performance Regression Alerting**: Intelligent threshold monitoring with baseline comparison and automated alert generation #### 📊 **Comprehensive Metrics Collection** - **Real-time Resource Monitoring**: CPU, memory, and disk usage tracking with historical analysis - **API Performance Tracking**: Response time histograms, success rates, and error categorization - **Tool Execution Metrics**: Performance monitoring for all MCP tools with execution time analysis - **Background Metrics Collection**: Non-blocking metrics gathering with configurable intervals #### 🚨 **Intelligent Alerting System** - **Performance Threshold Definitions**: 9 comprehensive thresholds covering API, cache, resources, and tools - **Regression Detection**: Automatic identification of performance degradation against historical baselines - **Alert Severity Classification**: Warning/Critical levels with consecutive violation tracking - **Multi-destination Alerting**: File logging, email, and webhook notifications with cooldown protection #### 🏗️ **Release Engineering Excellence** - **Conventional Commit Parser**: Automated changelog generation with proper categorization and emoji organization - **Security Release Assets**: SBOM (Software Bill of Materials) and vulnerability reports attached to all releases - **Enhanced CI/CD Pipeline**: Comprehensive security scanning, dependency validation, and automated workflows - **Evaluation Framework**: Comprehensive mcp-evals integration for realistic LLM-based testing ### 🛠️ **Infrastructure Improvements** #### 📋 **Error Handling & Standardization** - **Unified Error Taxonomy**: Consistent exception hierarchy with user-friendly messages - **Shared Error Formatting**: Centralized error response generation across all components - **Comprehensive Error Coverage**: Proper handling for authentication, validation, network, and system errors #### 📚 **Documentation & Best Practices** - **Evaluation Best Practices Guide**: Comprehensive guide for writing, running, and maintaining MCP evaluations - **Performance Thresholds Documentation**: Detailed operational procedures and troubleshooting guides - **Development Documentation**: Architecture overviews, configuration guides, and troubleshooting resources ### 📈 **Performance & Reliability** #### ⚡ **Optimized Performance** - **Non-blocking Metrics**: Background collection doesn't impact server responsiveness - **Memory-bounded Data Structures**: Configurable limits prevent memory exhaustion - **Efficient Aggregation**: Smart metric extraction with wildcard support and caching - **Thread-safe Operations**: Proper concurrency handling for metrics collection #### 🔒 **Enhanced Security & Monitoring** - **Security Alert Integration**: Performance issues trigger security monitoring alerts - **Rate Limiting Protection**: Alert cooldowns prevent notification spam - **Vulnerability Scanning**: Automated security scanning in release workflow - **Dependency Validation**: Comprehensive dependency review in CI/CD pipeline ## 🔧 **Technical Details** ### **Default Performance Thresholds** - **API P95 Response Time**: Warning > 1s, Critical > 3s - **API Success Rate**: Warning < 95%, Critical < 90% - **Cache Hit Rate**: Warning < 50%, Critical < 25% - **CPU/Memory Usage**: Warning > 80%, Critical > 90%+ - **Tool Execution Time**: Warning > 2s, Critical > 5s ### **Monitoring Endpoints** - `GET /health` - Overall system health with component status - `GET /ready` - Readiness probe for container orchestration - `GET /metrics` - Comprehensive metrics in JSON or Prometheus format - `GET /thresholds` - Performance threshold status and violations ### **Evaluation Suites** - **Smoke Tests**: Quick validation (2-3 minutes) - `npm run eval:smoke` - **Basic Tests**: Core functionality (5-10 minutes) - `npm run eval:basic` - **Comprehensive Tests**: Full validation (15-30 minutes) - `npm run eval:comprehensive` ## 🎉 **Getting Started with v1.7.0** ### **Enable HTTP Endpoints** ```bash export ENABLE_HTTP_ENDPOINT=true export HTTP_PORT=8080 export HTTP_HOST=0.0.0.0 ``` ### **Monitor Performance** ```bash # Check system health curl http://localhost:8080/health # View performance metrics curl http://localhost:8080/metrics # Monitor thresholds curl http://localhost:8080/thresholds ``` ### **Run Evaluations** ```bash # Install evaluation dependencies npm install # Run comprehensive validation npm run eval:all ``` ## 📊 **Metrics & Observability** This release introduces comprehensive observability with: - **Real-time Performance Monitoring** with historical trend analysis - **Proactive Alert Generation** for performance regressions - **Production-ready Health Checks** for container orchestration - **Comprehensive Testing Framework** with LLM-based validation ## 🔄 **Migration & Compatibility** - ✅ **Fully Backward Compatible**: No breaking changes to existing APIs - ✅ **Optional Features**: All monitoring features are opt-in via configuration - ✅ **Existing Installations**: Will continue working without modification - ✅ **Gradual Adoption**: Enable features as needed for your deployment ## 🏆 **Quality Assurance** - **500+ Test Cases**: Comprehensive unit, integration, and evaluation tests - **Security Scanning**: Automated vulnerability detection and reporting - **Performance Validation**: Threshold testing and regression detection - **Documentation Coverage**: Complete operational and development guides ## 🔮 **What's Next** Version 1.7.0 establishes a robust foundation for: - **Advanced Analytics**: Custom metrics and business intelligence - **Scalability Enhancements**: Multi-user support and horizontal scaling - **Integration Ecosystem**: External monitoring system connectors - **Performance Optimization**: Dynamic threshold adjustment and ML-based analysis ## 🙏 **Acknowledgments** This release represents the culmination of extensive development work focused on production readiness and operational excellence. Special thanks to the MCP community for their valuable feedback and contributions. --- **Full Changelog**: [v1.6.0...v1.7.0](https://github.com/docdyhr/simplenote-mcp-server/compare/v1.6.0...v1.7.0) **Documentation**: [docs/development/](docs/development/) **Issues**: [GitHub Issues](https://github.com/docdyhr/simplenote-mcp-server/issues) 🚀 **Ready for Production**: This release is recommended for all production deployments.