What: Real-time validation when editing .claude/settings.json and .claude/settings.local.json files How to use:
# When you edit a settings file with invalid JSON or schema
claude edit .claude/settings.json
# If the edit would create invalid settings, you'll see:
# "Claude Code settings.json validation failed after edit"
# followed by specific errors and the full schemaDetails:
- Validates JSON syntax before applying edits
- Checks against the official Claude Code settings schema
- Shows specific field paths and error messages when validation fails
- Provides the complete schema reference for troubleshooting
- Prevents invalid configurations from being saved