Cline SDK

Cline just open-sourced the agent runtime that powers one of the most-used coding agents in the world.What it is: @cline/sdk is a TypeScript agent runtime with a plugin architecture, designed to be embedded in any surface VS Code extensions, CLIs, desktop apps, Slack bots, or whatever you're building.The problem with most agent frameworks is that the loop gets glued to the product surface. Cline had this same issue: the agent grew inside the VS Code extension, and eventually the runtime and the IDE wrapper were inseparable. The SDK is the result of pulling those two things apart: a stateless, reusable loop at the core, with a stateful runtime layer on top of it.What makes it different: most coding agent runtimes aren't actually portable. They're designed to run inside one product. Cline SDK is explicitly built so sessions can move across surfaces, long-running work survives UI restarts, and the agent loop stays stateless regardless of where it's running. The plugin layer lets teams add domain-specific tools and observe lifecycle events without forking the runtime.Key features:Plugin architecture for registering tools, lifecycle hooks, and agent rulesNative subagents and multi-agent teams with built-in handoff and orchestrationCheckpointing, scheduled cron jobs, web fetch, and MCP connectors out of the boxProvider-agnostic: Anthropic, OpenAI, Google, AWS Bedrock, Mistral, LiteLLM, and OpenAI-compatible endpointsExample apps included: Slack bot, VS Code extension, desktop appBenefits:Embed a production-grade agent loop without building the harness yourselfSwap models and providers via config, not code rewritesMulti-agent workflows without a separate orchestration layerStart small with individual packages, add the stateful runtime only when you need itWho it's for: TypeScript developers building coding agents, internal dev tooling, or AI-powered CLI applications who want a stable, extensible runtime rather than a prompt wrapper.The benchmark numbers on Terminal-Bench 2.0 will get attention, but what actually matters here is that Cline is releasing the same runtime they use internally as an open package. That's a different kind of credibility than a framework built specifically for public release. P.S. I hunt the latest and greatest launches in tech, SaaS and AI, follow to be notified → @rohanrecommends