How do we get access to Checkout MCP for my dev store?

Agentic Commerce
1

We’re building an agentic commerce demo using Shopify’s Storefront MCP for discovery. We want to add Checkout MCP for in-agent payment completion. Can we get Dev Dashboard access for the Checkout MCP tools?

2

Here is the error I am getting

POST: https://vaultnoir.myshopify.com/api/ucp/mcp
{
“jsonrpc”: “2.0”,
“method”: “tools/list”,
“id”: 1
}

response:

{
“jsonrpc”: “2.0”,
“id”: 1,
“error”: {
“code”: -32000,
“message”: “AuthenticationFailed”,
“data”: “Service temporarily unavailable.”
}
}