I'm writing this down before I lose the thread

I'm writing this down before I lose the thread I've been sketching an architecture for agent platforms for a while, and the pieces are starting to lock together. Time to get it out of my head. Two reasons for writing. First, selfish: good ideas rot in Slack DMs and half-finished notes. Writing forces the system to hold. If I can explain it, it's real. Second, more honest: a lot of this is about to be obvious. The LLM gateway/proxy space has exploded. Kong, LiteLLM, Portkey, Gravitee, Harness, ev