Consider a common failure pattern. A logistics startup shipped a customer-facing agent on a discounted model. Day one passed. Day two passed. On day three, peak hours arrived, and every request queued behind a shared rate limit. The dashboard looked healthy. The queue did not. The team tested the model. They never tested the host.
The current AI conversation celebrates cheap tokens and fast shipping. It rarely asks who reviews the infrastructure behind the tokens. A recent DEV thread put it sharply: AI promoted every developer to reviewer. Nobody tested the reviewer. If you adopt free model quotas or a free server, you are that reviewer. Here is a field guide for the job. Start with red flags. Then probe. Then exit.
Why Free Tiers Look Fine on Paper
A free quota is a budget, not a contract. It usually carries no SLA, no burst guarantee, and no data-boundary promise. That is not an insult. It is a constraint. The danger is assuming those promises exist.
Use this guide before you wire a free endpoint into an agent. Score six red flags. Run the five-minute probe. Then decide.
