Error with streamText() and Cloudflare MCP: "Disallowed operation called within global scope"

[Met96]

When using the streamText() function from the vercel/ai package on a Cloudflare MCP server, I get this error:

Disallowed operation called within global scope. Asynchronous I/O (ex: fetch() or connect()), setting a timeout, and generating random values are not allowed within global scope.
This happens because Cloudflare Workers don't allow async operations like fetch() outside of request handlers.

The MCP server configured for the agent is:

import { Experimental_StdioMCPTransport } from "ai/mcp-stdio"
.
.
.
transport: new Experimental_StdioMCPTransport({
    command: "npx",
    args: ["mcp-remote", "https://autorag.mcp.cloudflare.com/sse"]
})

[RihanArfan]

Could you share a minimal reproduction please? Make sure that your usage is within a server route's defineEventHandler(). It also seems that Experimental_StdioMCPTransport is only available in Node.js environments. https://ai-sdk.dev/docs/reference/ai-sdk-core/mcp-stdio-transport