0n3
MCP servers · UCP — Universal Commerce Protocol · MCP server

Connect Windsurf to UCP — Universal Commerce Protocol

One line gives Windsurf your UCP — Universal Commerce Protocol account as tools: 3 endpoints, list offers, create checkout, get download link, called with your own connection. No key in the prompt, a receipt for every call, revoke Windsurf's access alone any time.

Get the line for WindsurfConnect UCP — Universal Commerce Protocol first

Three steps

  1. Create a free 0n3 account and connect UCP — Universal Commerce Protocol. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into Windsurf. The mcp_config.json block.
  3. Ask Windsurf: whoami. Then: "List offers in UCP — Universal Commerce Protocol".
Write it yourself · ~/.codeium/windsurf/mcp_config.json
{
  "mcpServers": {
    "0n3": {
      "serverUrl": "https://0n3.app/mcp",
      "headers": {
        "Authorization": "Bearer <your 0n token>"
      }
    }
  }
}

The line above carries a placeholder; 0n3.app/install mints a real key named for Windsurf and fills it in.

What Windsurf can then do in UCP — Universal Commerce Protocol

List offers · List all active products, downloads, and plans1
List offersGET /api/commerce/offers
Create checkout · Generate a Stripe Checkout session for a product slug1
Create a checkoutPOST /api/commerce/checkout
Get download link · Verify entitlement and return a signed download URL1
Get a download linkGET /api/commerce/download
List purchases · List the user's completed purchases0
List the user's completed purchases

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Windsurf with other apps

Hostinger363 endpointsTelegram132 endpointsPipedrive95 endpointsResend67 endpointsSquare57 endpointsLinkedIn50 endpointsSlack45 endpointsFigma32 endpointsCloudConvert32 endpointseBay25 endpointsQuickBooks21 endpointsCloudflare21 endpoints