Protect your Sim API key when making requests from client-side apps by using a Cloudflare Worker as a proxy. This worker receives requests from you app, securely adds your SIM_API_KEY on the server, and then forwards the requests to the Sim API endpoints. We provide a one-click-deploy Cloudflare Worker to simplify this setup. Find detailed instructions in our GitHub repo:

Sim API Proxy on GitHub

One-click deployment and comprehensive setup instructions for the Cloudflare Worker proxy.