Connectors that were open before 2.0 keep 1.0's tool list, where labels is one comma-separated string, until they refresh it. That form now works too. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CYHXFvWMCs1GUmRmpySqQ6