https://www.reddit.com/r/Markdown/comments/wihxbl/validate_your_markdown_frontmatter_data_against_a/ https://github.com/JulianCataldo/remark-lint-frontmatter-schema https://stackoverflow.com/questions/27838730/is-there-a-yaml-front-matter-standard-validator https://github.com/jackchuka/mdschema - looks like lots of alignment here https://github.com/luebken/claude-plugins/tree/main/plugins/validate-md - simple schema and validation (similar to validate command)
https://www.reddit.com/r/Markdown/comments/wihxbl/validate_your_markdown_frontmatter_data_against_a/
https://github.com/JulianCataldo/remark-lint-frontmatter-schema
https://stackoverflow.com/questions/27838730/is-there-a-yaml-front-matter-standard-validator
https://github.com/jackchuka/mdschema - looks like lots of alignment here
https://github.com/luebken/claude-plugins/tree/main/plugins/validate-md - simple schema and validation (similar to validate command)