I like building AI into products with real workflows.

I am yuyukosama2004, a full-stack developer focused on AI products and developer tools. I work mainly with Java, Vue, Python, RAG, MCP, and self-hosted infrastructure.

A model producing an answer is only the beginning. I also care about where the data comes from, how results are checked, which actions require human approval, and how a deployed system can be debugged or rolled back.

My current projects include a RAG shopping assistant, a Claude Code configuration initializer, a research workspace, a long-form AI writing tool, and a guarded multi-model development pipeline.