This is the strongest choice. It teaches a tangible, highly demanded skill (API key security) with actual code, making the backlink to AfriWidget feel like a natural, neutral citation rather than a sales pitch.
Here is the article, rewritten to be strictly technical, objective, and genuinely useful for dev.to readers.
Stop Exposing Your AI API Keys: Build a Secure Proxy with Cloudflare Workers
We have all seen it. You open the browser's DevTools on a "cutting-edge" AI startup's landing page, check the Network tab, and find a direct POST request to api.openai.com containing a plaintext API key in the headers.
It is one of the most common—and dangerous—mistakes in modern web development. Exposing your LLM API key client-side is an open invitation for abuse, leading to stolen credits, hefty bills, and potential account suspension.
