Cline Open-Sources @cline/sdk — Modular Agent Runtime for CLI, VS Code, and JetBrains

Cline

Tools official + media 2 src. ~1 min

Cline released @cline/sdk on May 13, 2026, open-sourcing the rebuilt agent runtime that underlies its CLI, VS Code, and JetBrains extensions. The SDK is a four-layer TypeScript stack: @cline/shared (types/utilities), @cline/llms (provider layer supporting Anthropic, OpenAI, Google, AWS Bedrock, Mistral, LiteLLM), @cline/agents (stateless agentic loop with tool orchestration), and @cline/core (stateful orchestration, session lifecycle, MCP connectors, CRON jobs). The company reported Cline CLI with Claude Opus 4.7 scored 74.2% on Terminal Bench 2.0 vs 69.4% for Claude Code on the same model.

Why it matters

Opening the core agent runtime enables third parties to build on the same loop used by one of the most-used VS Code AI extensions; the clean provider-separation architecture and native MCP/CRON support lower the barrier for self-hostable, extensible coding agents.

Importance: 3/5

Cline official + TestingCatalog; open-sources production agent runtime with benchmark comparison to Claude Code

cline coding-agent open-source sdk mcp release

Sources

official GitHub — cline/cline: Autonomous coding agent as SDK, IDE extension, or CLI

media Cline releases open-source agent runtime SDK for coding agents — Testing Catalog