[BUG] Atlassian MCP Sign In does not work

Environment

• Platform (select one):
• [x] Anthropic API
• Claude CLI version: 1.0.33 (Claude Code)
• Operating System: Windows, WSL Ubuntu 24.04.2 LTS
• Terminal: Bash in VS Code connected to WSL

Bug Description

Authentication with Atlassian fails when clicking the link to sign in with this message:

The redirect URI is not allowed, the URL is not part of Atlassian whitelisted domains for registered MCP Clients. Redirect URI

Steps to Reproduce

1. claude mcp add --transport sse atlassian https://mcp.atlassian.com/v1/sse
2. claude
3. /mcp
4. Select atlassian, hit enter
5. Click link to open browser: https://mcp.atlassian.com/v1/authorize?response_type=code&client_id=1ecEWU0Qn6LC8mAO&code_challenge=REDACTED&code_challenge_method=S256&redirect_uri=http%3A%2F%2Flocalhost%3A60953%2Fcallback&state=REDACTED
6. Blank website states:

>The redirect URI is not allowed, the URL is not part of Atlassian whitelisted domains for registered MCP Clients. Redirect URI

Expected Behavior

Authentication works

Actual Behavior

Authentication fails