How I Use Cloudflare Workers as an HTTP Proxy (Code Included)

Cloudflare Workers are not just for edge computing. I use them as lightweight HTTP proxies for API aggregation and geo-restricted content access.

Why a CF Worker Proxy?

1. Geo-restricted APIs
2. CORS headaches
3. Monitoring from multiple regions

CF Workers run on 300+ edge locations worldwide.

The Basic Pattern

The worker accepts POST requests with a target URL, fetches it from the CF edge, and returns the response with CORS headers.

Key points:

• Always authenticate (I use a token in a custom header)
• Domain allowlisting is safer than open access
• Handle timeouts with AbortController

Real-World Use Cases

1. Monitoring my SaaS from multiple regions
2. Aggregating data from multiple APIs in one request
3. Bypassing CORS for legitimate integrations

Deploying

npm install -g wrangler
wrangler init my-proxy
wrangler deploy

Cost: Free tier = 100K requests/day.

What NOT to Do

• Do not build an open proxy
• Do not proxy to sensitive internal APIs without auth
• Do not forget rate limiting

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All my free tools use this pattern:

• SEO Checker
• Etsy Fee Calculator
• Podcast Title Generator
• Parcelglance

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Full disclosure: I'm the developer of SaaSLaunch. I built this tool because I needed it myself.