Cline Releases Open-Source Agent Runtime SDK with CLI v3.0.0
Tags Developer Tools · OSS · AI
Cline shipped @cline/sdk, an open-source TypeScript agent runtime that powers every Cline surface (CLI, VS Code, JetBrains) and is now available for any team to build on. The SDK is a layered stack: @cline/shared (types/utilities), @cline/llms (provider layer for Anthropic, OpenAI, Google, AWS Bedrock, Mistral, LiteLLM), @cline/agents (stateless agentic loop), and @cline/core (stateful orchestration). CLI v3.0.0 is rebuilt on the new SDK with a new TUI, agent teams, scheduled jobs, and connectors for Telegram, WhatsApp, and Slack. Cline serves over 7 million developers and benchmarks at 74.2% on Terminal Bench 2.0 with claude-opus-4.7.
Technical significance
By open-sourcing its agent runtime SDK, Cline is positioning itself as the infrastructure layer for coding agents — analogous to what React did for web UIs. The layered architecture (shared, llms, agents, core) gives developers composable building blocks. The 7 million developer base and Terminal Bench 2.0 scores demonstrate both adoption and capability, making this a significant move in the coding agent ecosystem.