Introducing Cline SDK: the upgraded agent runtime, and we rebuilt Cline upon it
Renee Huang • May 13, 2026
0:00 /0:41 1× Before “agents” became a buzzword, Cline was the first real agentic coding experience. Cline started with the VSCode extension and helped a generation of developers step into AI coding. It was a great VS Code extension, but as the technology evolves, it also taught us something uncomfortable: the architecture that got us there was not the modular and extensible framework we would choose for what comes next. It was definitely the cost of b
