Worked on the twentyhq/twenty repository to enhance backend reliability by focusing on agent-origin stamping and MCP module stability. Addressed a critical bug where records generated by the MCP server and AI Agent were not correctly identified, implementing logic to ensure proper origin stamping using TypeScript and NestJS. Introduced a workspace cache module to improve data caching and overall MCP reliability, while expanding test coverage to verify AGENT-origin records and strengthen loop-protection filters. These targeted changes improved traceability and reduced misclassification risks in production, reflecting a methodical approach to backend development, testing, and protocol alignment within a complex system.