0n3
MCP servers · Xero · MCP server

Connect Windsurf to Xero

One line gives Windsurf your Xero account as tools: 9 endpoints, invoices, contacts, payments, 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 Xero first

Three steps

  1. Create a free 0n3 account and connect Xero. 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 invoices in Xero".
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 Xero

Invoices · Manage invoices3
List invoicesGET /Invoices
Create an invoicePOST /Invoices
Get an invoiceGET /Invoices/{InvoiceID}
Contacts · Manage accounting contacts2
List contactsGET /Contacts
Create a contactPOST /Contacts
Payments · Record payments2
List paymentsGET /Payments
Create a paymentPUT /Payments
More · Everything else this app exposes.2
List accountsGET /Accounts
Get an organisationGET /Organisation

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Windsurf with other apps

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