I had four small services. Each one was a Model Context Protocol adapter — a thin wrapper that lets an AI agent call out to some external thing. One talked to Replicate for image generation. One talked to a Nostr-friendly social poster. One was a Git-aware research helper. One was a Tavily-powered web search. They were all written in Python. They all ran on Knative on a small Kubernetes cluster. They all worked. And they were all just slightly too slow to use. A six-second cold start is ...