Cline SDK — open-source agent runtime for CLI, Kanban, IDE extensions
Cline extracted its internal agent harness into @cline/sdk, a TypeScript runtime now powering its CLI, Kanban, and (soon) VS Code and JetBrains extensions.
• Four-layer stack: @cline/shared, @cline/llms, @cline/agents, @cline/core
• Native plugins, subagents, CRON scheduling, checkpointing, MCP connectors
• Cline CLI scores 74.2% on Terminal Benchmark 2.0 (claude-opus-4.7); Claude Code: 69.4%
• Install: npm install @cline/sdk; requires Node.js 22+