Over two months, 0xQuasar integrated Quasar support into the cosmos/chain-registry and chainapsis/keplr-chain-registry repositories, focusing on robust API and RPC endpoint management. They established end-to-end RPC, REST, and gRPC interfaces using Go and JSON, consolidating inter-service communication within the dungeon module. Their work included cleaning up misconfigured endpoints, standardizing registry data, and synchronizing configuration across multiple registries to improve reliability and onboarding for downstream applications. By prioritizing configuration management and data consistency, 0xQuasar delivered maintainable updates that reduced manual intervention and deployment risk, demonstrating a strong grasp of backend development and registry management best practices.