[Bug] Built-in claude_design MCP server returns 404 on every session
Status Closed — duplicate
Reported on v2.1.181
Maintainer reply None cached
Activity 3 comments · opened Jun 18, 2026 · closed Jun 22, 2026
Bug Description
Built-in claude_design MCP server (dynamic scope) fails on every session: Streamable HTTP error: 404 page not found POSTing to https://api.anthropic.com/v1/design/mcp. The endpoint returns 404. Not user-configurable — can't be removed (Cannot remove MCP server from scope: dynamic) and /mcp auth doesn't apply since it's a 404, not an auth failure.
Environment Info
- Platform: darwin
- Terminal: ghostty
- Version: 2.1.181
- Feedback ID: a0b7a97c-93b9-4222-b2be-6d0aa73b6ff9
Errors
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