IBM open-sources CUGA, a lightweight agent framework with 20+ single-file example apps

IBM 开源 CUGA：轻量级智能体框架，提供二十余个单文件示例应用

CUGA bundles planning, execution, reflection, and tool calling into a configurable agent—just supply a tool list and a prompt. It ranked first on both AppWorld (Jul 2025–Feb 2026) and WebArena (Feb–Sep 2025) benchmarks. Three inference modes (Fast / Balanced / Accurate) are available, and code can run locally, in Docker, or inside an E2B sandbox. The tool layer supports OpenAPI, MCP, and LangChain functions; switching between OpenAI, watsonx, Ollama, and other providers is done via environment variables. Over 20 single-file example apps ship with the framework—movie recommendations, an IBM Cloud architecture advisor, and more—each requiring only one FastAPI file.

Why it matters: IBM open-sourced CUGA with concrete benchmark wins and reproducible examples, giving it solid knowledge density. But the agent-framework space is crowded and the post lacks a distinctive hook for practitioners to debate, so resonance is weak. Defaulting to the lower band per p...