Ask HN: What agent frameworks are you using, and how well do they work?

We’ve built and used our own custom agent framework for a while (before “agents” became a mainstream term), mainly because existing tools didn’t fit our needs around control, observability, and composability.

I’m curious what others are actually running in production today—custom frameworks, LangGraph, AutoGen, CrewAI, homegrown pipelines, etc. and how satisfied you are with them.

What’s working well? What breaks down at scale (debuggability, cost, determinism, tool orchestration, evals)?