Developed and delivered the Merkl campaigns and pricing blacklists feature for the morpho-blue-api-metadata repository, focusing on backend enhancements to support campaign-specific pricing rules and exclusions. Designed and implemented new data structures and backend logic using TypeScript, enabling the system to manage targeted pricing experiments and enforce blacklist policies efficiently. The work centered on API development and backend development, ensuring that the codebase could flexibly accommodate evolving campaign requirements. By integrating these features, the project now supports more granular control over pricing strategies, laying the groundwork for future extensions and improved management of campaign-driven pricing logic within the repository.