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Dev.to
7/17/2026
I built a Cloudflare Worker so you can give the public free AI, without ever getting a surprise bill

I built a Cloudflare Worker so you can give the public free AI, without ever getting a surprise bill

Short summary

A developer built a ~20 KB Cloudflare Worker that lets you expose free AI endpoints to the public with a guaranteed spend ceiling. It routes requests through free-tier providers (Google Gemini, OpenRouter community models) in cost order, caps usage per device, IP, and globally, and keeps your API key server-side. It's a commercial pay-what-you-want boilerplate targeting indie devs who want to ship free AI features without financial risk.

  • •Cloudflare Worker relays public AI requests through free-tier providers in cost order, defaulting to $0 spend
  • •Three-layer cap (device + IP + global daily) prevents runaway costs from anonymous users
  • •Commercial pay-what-you-want boilerplate, not open source; includes one-toggle kill switch

Generated with AI, which can make mistakes.

#ai-tools#open-source#ai-agents
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