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[ARTICLE · art-40010] src=dev.to ↗ pub= topic=developer-tools verified=true sentiment=↑ positive

How to Run OpenAI & Claude on the Frontend Without Leaking Your API Keys 🤯

Puter.js is a serverless JavaScript library that enables developers to build full-stack, AI-powered applications directly in the browser without needing a backend to protect API keys. It allows frontend apps to use OpenAI and Anthropic models securely, eliminating the need for a separate Node or Python server.

read1 min views1 publishedJun 25, 2026

We've all been there: you want to build a cool AI-powered feature for your frontend app, but then reality hits. You have to spin up a Node/Python backend just to hide your OpenAI or Anthropic API keys so no one steals them and runs up your bill.

Not anymore. Puter.js completely flips the script. 🔄

Puter.js is a serverless JavaScript library that lets you build full-stack, AI-powered applications directly in the browser.

If you want to prototype and deploy AI apps at lightning speed, check out docs.Puter.com! 👉 *Have you built anything with Puter yet? Let me know in the comments!

source & further reading
dev.to — original article I Scanned 1,200 MCP Configs From GitHub. Here's What I Found. Enterprise AI Agent Orchestration: Shared Memory & Local-First... Three Loops, No Ship
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