Open Source AI Bookkeeping Agent: Building a Cursor-like Intelligent Assistant from Scratch

This article introduces an independently developed AI bookkeeping agent project by the author, featuring a proprietary Stateful Agent architecture, unlike the simple regex matching or chat-based bookkeeping applications on the market. The project includes four core components: Intent Rewriter for intent preprocessing and risk assessment; Planner for dynamic planning of execution flow; Stateful Agent as a state machine executor supporting human-computer collaboration; and Reflector using the ReAct reflection pattern for result verification and error correction. In terms of technology stack, the client uses React Native, the backend is based on Spring Boot, and integrates Spring AI. Beyond AI capabilities, the project also provides complete bookkeeping functionality, including multi-ledger management, chart analysis, data export, and permission control. The author has open-sourced the code, hoping to provide a reference for developers integrating complex agents in React Native or Java projects.