Marketplace schema validation errors when adding anthropics/claude-plugins-official

Description

When attempting to add the official Claude plugins marketplace (anthropics/claude-plugins-official), schema validation errors occur for multiple plugins.

Steps to Reproduce

1. Run Claude Code
2. Navigate to Add Marketplace
3. Enter anthropics/claude-plugins-official as the marketplace source
4. Submit

Error Message

Invalid schema: plugins.56.source: Invalid input, plugins.63.source: Invalid input, plugins.67.source: Invalid input, plugins.71.source: Invalid input, plugins.72.source: Invalid input, plugins.73.source: Invalid input, plugins.74.source: Invalid input, plugins.75.source: Invalid input

Expected Behavior

The official marketplace should be added successfully without schema validation errors.

Environment

• Date: 2026-03-16
• Platform: macOS (Darwin 25.1.0)
• Marketplace source: anthropics/claude-plugins-official

Additional Context

Multiple plugins (56, 63, 67, 71, 72, 73, 74, 75) in the official marketplace appear to have invalid source field values according to the current schema validator.