Railway MCP not connecting in claude desktop

### MCP server URL

railway.com/mcp

### Where does the issue occur?

When auth finishes and redirects back to Claude.ai

### Transport used

streamable-http

### Client registration type

My server does not have auth

### SSE only: Does your server return the expected status code for POST requests?

Not applicable (my server does not use SSE)

### When did you last reproduce this?

2026-08-06

### Browser and OS

Safari

### Describe the issue

Couldn’t register with Railway’s sign-in service. You can try again, or add an OAuth Client ID in the connector settings. If this persists, share this reference with support: “ofid_f323af8b7a356113”

### Issue details

```shell
Trying to connect claude desktop railway mcp connector - says authentication successful on railway but fails when coming back to claude.
```

### Expected behavior

successful connection in claude desktop

### Logs from your server

```shell

```

### Additional context

_No response_