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Route to private services from Workers

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This example shows how to use Workers VPC to create a centralized gateway that routes requests based on URL paths, provides authentication and rate limiting, and load balances across internal services.

Prerequisites

  • Multiple private APIs or services running in your VPC/virtual network (we'll use a user service and orders service)
  • Cloudflare Tunnel configured and running (follow the Get Started guide to set up or create a tunnel from the dashboard ↗)
  • Workers account with Workers VPC access

1. Create the VPC Services

First, create services for your internal APIs using hostnames:

# Create user service
npx wrangler vpc service create user-service \
  --type http \
  --tunnel-id <YOUR_TUNNEL_ID> \
  --hostname user-api.internal.example.com

# Create orders service
npx wrangler vpc service create order-service \
  --type http \
  --tunnel-id <YOUR_TUNNEL_ID> \
  --hostname orders-api.internal.example.com

Note the service IDs returned for the next step.

2. Configure your Worker

Update your Wrangler configuration file:

{
	"$schema": "./node_modules/wrangler/config-schema.json",
	"name": "api-gateway",
	"main": "src/index.js",
	// Set this to today's date
	"compatibility_date": "2026-07-20",
	"vpc_services": [
		{
			"binding": "USER_SERVICE",
			"service_id": "<YOUR_USER_SERVICE_ID>"
		},
		{
			"binding": "ORDER_SERVICE",
			"service_id": "<YOUR_ORDER_SERVICE_ID>"
		}
	]
}
"$schema" = "./node_modules/wrangler/config-schema.json"
name = "api-gateway"
main = "src/index.js"
# Set this to today's date
compatibility_date = "2026-07-20"

[[vpc_services]]
binding = "USER_SERVICE"
service_id = "<YOUR_USER_SERVICE_ID>"

[[vpc_services]]
binding = "ORDER_SERVICE"
service_id = "<YOUR_ORDER_SERVICE_ID>"

3. Implement the Worker

In your Workers code, use the VPC Service bindings to route requests to the appropriate services:

index.jsjs
export default {
	async fetch(request, env, ctx) {
		const url = new URL(request.url);

		// Route to internal services
		if (url.pathname.startsWith('/api/users')) {
			const response = await env.USER_SERVICE.fetch("https://user-api.internal.example.com" + url.pathname);
			return response;
		} else if (url.pathname.startsWith('/api/orders')) {
			const response = await env.ORDER_SERVICE.fetch("https://orders-api.internal.example.com" + url.pathname);
			return response;
		}

		return new Response('Not Found', { status: 404 });
	},
};

4. Deploy and test

Now, you can deploy and test your Worker:

npx wrangler deploy
# Test user service requests
curl https://api-gateway.workers.dev/api/users

# Test orders service requests
curl https://api-gateway.workers.dev/api/orders

Next steps