Every Google Gemini error we see across thousands of AI agents routing through the gateway. 3 common errors, 202 affected teams in the last 30 days. Each one with what it means, how to fix it, and how the gateway routes around it.

Gemini is stricter about request shape than most providers: function-calling payloads other APIs accept can 400 here, and free-tier quotas are enforced per minute and per day. Validate tool schemas against the exact API version you target, and back off when you see RESOURCE_EXHAUSTED.