# The Agentic Engineer — Full Content Index > Weekly newsletter on AI agents, cloud architecture, and the tools reshaping how we build software. > Published by Waltsoft Inc (https://waltsoft.net) ## Issue #1: Mercury 2, Agentic IDEs & The Plumbing Era URL: https://theagenticengineer.waltsoft.net/archive/mercury-2-agentic-ides-plumbing-era Audio: https://theagenticengineer.waltsoft.net/audio/mercury-2-agentic-ides-plumbing-era.mp3 Diffusion models are coming for LLMs. The agentic IDE war is heating up. Hugging Face is standardizing agent skills. ## Issue #2: Claude Code Is Picking Your Stack URL: https://theagenticengineer.waltsoft.net/archive/claude-code-picking-your-stack Audio: https://theagenticengineer.waltsoft.net/audio/claude-code-picking-your-stack.mp3 Researchers analyzed 2,430 Claude Code responses and found it is quietly building the default developer stack. ## Issue #3: LangChain Just Open-Sourced a Claude Code Replacement URL: https://theagenticengineer.waltsoft.net/archive/langchain-open-sources-claude-code-replacement Audio: https://theagenticengineer.waltsoft.net/audio/langchain-open-sources-claude-code-replacement.mp3 LangChain releases Deep Agents, an MIT-licensed Claude Code alternative built on LangGraph. Works with any model. Plus: GPT-5.4 native computer use, Clinejection supply chain attack, Karpathy's autoresearch, and Shannon AI pentester. ## Issue #4: An Autonomous Agent Hacked McKinsey in 2 Hours URL: https://theagenticengineer.waltsoft.net/archive/autonomous-agent-hacked-mckinsey-in-2-hours Audio: https://theagenticengineer.waltsoft.net/audio/autonomous-agent-hacked-mckinsey-in-2-hours.mp3 CodeWall's autonomous agent found SQL injection in McKinsey's Lilli AI platform, gaining read/write access to 46.5M messages. Plus: Amazon's AI code governance, Claude 1M context GA, METR's SWE-bench reality check, and Agent Browser Protocol. ## Subscribe Visit https://theagenticengineer.waltsoft.net to subscribe for free. ## RSS Feed https://theagenticengineer.waltsoft.net/feed.xml