Step-by-step: configure a monthly spend cap in Manera that the platform cannot bill you over. Three minutes.
Visit /billing/auto-recharge?email=
Enter a hard ceiling — e.g., $1,500/mo. Save. The cap is now stored in your customer record + propagated to shared/usage_governor.py across every flagship.
Each AI inference call hits shared/usage_governor.governed_create() before reaching Anthropic. The governor checks your month-to-date cost against the cap. If the call would breach the cap, it's blocked at the API layer — Manera literally cannot charge you over your cap.
Your sub-app pauses (HTTP 402 Payment Required) and emails you with a usage breakdown. You can either lift the cap, wait for the next billing cycle, or top up via /credit/add.
Set a tiny cap ($5/mo) on a test account, run queries, and watch them block at $5. We've published the governor source at /api/openapi.merged.json under the usage namespace.