langchain-ai/deepagents v0.5.0a3: Agent Harness with Planning, Filesystem, and Sub-Agent Spawning — 19K Stars

GitHub·medium signal

LangChain's Deep Agents framework released v0.5.0a3 on April 1 — an opinionated, ready-to-run agent with built-in planning (write_todos), full filesystem operations, sandboxed shell execution, and automatic sub-agent spawning for task delegation. Built on LangGraph for production deployment, it includes smart system prompts and automatic context summarization. 19K stars and 2.6K forks across 77 releases. Positioned as LangChain's answer to Claude Code's terminal agent capabilities.