让人类与AI协作自编程，降低复杂系统开发门槛

Compound AI systems, orchestrating multiple AI components and external APIs, are increasingly vital but face challenges in managing complexity, handling ambiguity, and enabling effective development workflows. Existing frameworks often introduce significant overhead, implicit complexity, or restrictive abstractions, hindering maintainability and iterative refinement, especially in Human-AI collaborative settings. We argue that overcoming these hurdles requires a foundational architecture prioritizing structural clarity and explicit control. To this end, we introduce Pocketflow, a platform centered on Human-AI co-design, enabled by Pocketflow. Pocketflow is a Python framework built upon a deliberately minimal yet synergistic set of core abstractions: modular Nodes with a strict lifecycle, declarative Flow orchestration, native hierarchical nesting (Flow-as-Node), and explicit action-based conditional logic. This unique combination provides a robust, vendor-agnostic foundation with very little code that demonstrably reduces overhead while offering the expressiveness needed for complex patterns like agentic workflows and RAG. Complemented by Pocket AI, an assistant leveraging this structure for system design, Pocketflow provides an effective environment for iteratively prototyping, refining, and deploying the adaptable, scalable AI systems demanded by modern enterprises.