Worked on the elastic/elasticsearch-specification repository to deliver the ES|QL Query Monitoring API, focusing on enhancing observability and secure monitoring of ES|QL queries. Defined new API endpoints, type definitions, and privilege configurations to support real-time monitoring and access control for query data. The technical approach centered on TypeScript for type safety and API surface definition, leveraging Elasticsearch expertise to align the API specification and security model with monitoring requirements. This work enabled improved detection of performance issues and supported proactive capacity planning, directly addressing business needs for secure, efficient monitoring of ES|QL workloads without introducing any bug fixes during the period.