guide
How to Test Your AI Agent: Tool-Call Assertions Instead of Vibes
Your agent SDK shipped zero test utilities. Here's a 60-line Python harness that tests what your agent does, not what it says.
news
LangChain Isn't Dead. It's Worse.
Four vendor SDKs shipped in eleven days, commoditizing LangChain's core runtime into a free default. Two products survive: LangSmith and LangGraph. Here's what that means for your stack and the migration math nobody talks about.