Developed and delivered the OK-BITOK TVL adapter for the DefiLlama-Adapters repository, enabling accurate tracking of total value locked in OK-BITOK vaults on the Arbitrum network. Focused on robust API integration and backend development using JavaScript, the work centered on expanding cross-chain data coverage and improving dashboard accuracy for DeFi analytics. The adapter was designed with a modular pattern to support scalable addition of Arbitrum assets, and data integrity was validated through integration tests and code review. No major bugs were reported, reflecting an emphasis on code quality and maintainability throughout the integration and smart contract interaction process.