[BUG] Remote sentry mcp is not launching auth flow

Environment

• Platform (select one):
• [x] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 0.2.120 (Claude Code)
• Operating System: 15.4.1 (24E263)
• Terminal: Ghostty

Bug Description

Unable to connect to sentry's remote mcp server

Steps to Reproduce

1. claude mcp add --transport sse -s user sentry https://mcp.sentry.dev/sse
2. claude --mcp-debug

Expected Behavior

Browser tab is launched or url available to go through auth flow

Actual Behavior

❯ claude --mcp-debug
╭───────────────────────────────────────────────────╮
│ ✻ Welcome to Claude Code research preview!        │
│                                                   │
│   /help for help, /status for your current setup  │
│                                                   │
│   cwd: /Users/stephensolka/dev/standd             │
╰───────────────────────────────────────────────────╯

MCP server "sentry" Error: SSE error: Non-200 status code (401)
MCP server "sentry" Connection failed: SSE error: Non-200 status code (401)

╭───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ > Try "how do I log an error?"                                                                                                                                                    │
╰───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
  1 MCP server failed to connect (see /mcp for info)

Additional Context

I was able to add this to Claude desktop app using the following config:

{
  "globalShortcut": "",
  "mcpServers": {
    "Sentry": {
      "command": "npx",
      "args": ["mcp-remote@latest", "https://mcp.sentry.dev/sse"]
    }
  }
}

It launched a browser and I used that to complete the auth flow.