/plugin command fails with schema validation errors on marketplace load

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Failed to load all marketplaces. Errors: claude-plugins-official: Invalid schema: plugins.2.source: Invalid input, plugins.5.source: Invalid input, plugins.12.source: Invalid input, plugins.31.source: Invalid input, plugins.35.source: Invalid input, plugins.52.source: Invalid input, plugins.61.source: Invalid input, plugins.67.source: Invalid input, plugins.70.source: Invalid input, plugins.92.source: Invalid input, plugins.102.source: Invalid input, plugins.112.source: Invalid input, plugins.120.source: Invalid input, plugins.121.source: Invalid input, plugins.126.source: Invalid input

Environment:

• OS: macOS (Darwin 25.2.0)
• Claude Code version: [run claude --version and paste here]

What Should Happen?

Plugin marketplace loads successfully

Actual: 15 plugins fail schema validation on the source field, preventing marketplace from loading

Error Messages/Logs

⎿  Failed to load all marketplaces. Errors: claude-plugins-official: Invalid schema: plugins.2.source: Invalid input, plugins.5.source: Invalid input, plugins.12.source: Invalid input, plugins.31.source: Invalid input, plugins.35.source: Invalid input, plugins.52.source: Invalid input, plugins.61.source: Invalid input, plugins.67.source: Invalid input, plugins.70.source: Invalid input, plugins.92.source: Invalid input, plugins.102.source: Invalid input, plugins.112.source: Invalid input, plugins.120.source: Invalid input, plugins.121.source: Invalid input, plugins.126.source: Invalid input

Steps to Reproduce

/plugin

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

4/9/26

Claude Code Version

Claude Code version: 2.0.70

Platform

Other

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_