API quickstart remote MCP example uses a retired endpoint that returns 404

What is the type of issue?

Example code is not working

What is the issue?

Problem

The remote MCP quickstart example points to https://dmcp-server.deno.dev/mcp, which no longer serves its deployment. This prevents the documented “Roll 2d4+1” example from working.

The same URL appears across the language examples.

Reproduction

curl -i https://dmcp-server.deno.dev/mcp

Verified September 10, 2026:

HTTP/2 404

404: Not Found (DEPLOYMENT_NOT_FOUND)

The requested deployment does not exist. Deno Deploy Classic was sunset on July 20, 2026 and no longer serves deployments. See https://deno.com/deploy for the new Deno Deploy.

An MCP initialize POST request also returns the same 404.

Expected behavior

The quickstart should use a working MCP endpoint so users can successfully run the example.

Suggested fix

• Point all language examples to a maintained, publicly accessible MCP endpoint.
• Update the server description and prompt if the replacement endpoint provides different tools.
• Verify the example end to end through the Responses API.

Where did you find it?

https://developers.openai.com/api/docs/quickstart?lang=python&tool-type=remote-mcp#extend-the-model-with-tools

The same URL appears across the language examples.

Start with the linked remote MCP quickstart and search the language examples for dmcp-server.deno.dev/mcp. Test a maintained replacement with the curl and MCP initialize requests described in the issue, then verify the example end to end through the Responses API. Done means every language example uses a working endpoint and its server description and prompt match the replacement tools.