Before implementing Mollo, an Apple-platform-native agent framework, I summarize the core assets of LangGraph, Koog, OpenAI Agents SDK, Pydantic AI, Mastra, MCP, and Apple frameworks.
A breakdown of the architecture and implementation details behind Yangsiljang, a real estate law and precedent RAG chatbot built as a side project. The frontend was built with Claude Code’s help; the backend was written from scratch. Topics covered include a custom Korean tokenizer build for Milvus, Qwen3 embedding/reranker, HyDE, SSE streaming, and data ingestion from the Korean Legislative Service.