Cap every AI / API spend before someone bankrupts you - shippingszn launch readiness

Every AI API and paid third-party service charges per request. If your app calls OpenAI, Anthropic, Replicate, ElevenLabs, Twilio, or anything similar, an attacker (or a bug) can run those calls in a loop and turn your free trial into a four-figure bill overnight. Spend caps and per-user quotas are the seatbelts.

This is one of the most underrated risks for AI-built apps. AI builders happily wire up an OpenAI key for you with no quotas. One infinite loop, one abusive script, one curious user — or one stolen key (theft of AI API keys spiked sharply, and a single leaked key has run up five-figure bills overnight) — can rack up $1K–$10K in a weekend. The provider will not refund it. And don't assume the dashboard budget saves you: several providers, OpenAI included, made their monthly 'budget' notification-only, so it warns you while the spend keeps going. The real cap has to be one you enforce — prepaid credits with auto-recharge off, or your own per-key cost cutoff — plus per-user quotas. Those cost nothing and take minutes to set.

The shippingszn CLI includes automated checks for this launch-readiness control.

The Launch Fix Kit keeps scan-specific findings, file and line evidence, AI-builder punch-list tasks, and verification steps tied to the paid report.

Log into every paid API dashboard (OpenAI, Anthropic, Replicate, etc.) and set the lowest spending limit it offers. Start low — you can raise it. But check whether it's a true hard cap or only an alert: several providers' 'budgets' (OpenAI's included) just notify you and keep charging. Where there's no real hard stop, use prepaid credits with auto-recharge turned OFF, or enforce a per-key cost cutoff at a gateway in front of the provider.
Set dashboard alerts before the cap, at minimum 50% and 80%, so you hear about abuse before the provider shuts off the service or the bill lands.
In your app, add per-user quotas: 'this user can make at most N AI requests per day.' Even logged-in users need this.
Add per-IP rate limits on AI endpoints, separate from your normal API rate limits — much stricter.
Add a global kill-switch (an env variable like AI_ENABLED=false) you can flip in 10 seconds if costs spike.

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Canonical URL: https://shippingszn.com/i/api-spend-cap/