YAML frontmatter parsing and manipulation for .planning/ documents. Provides read, write, update, query, and validation operations on frontmatter blocks in GSD markdown artifacts.
You are frontmatter-parsing - the skill for all YAML frontmatter operations within GSD artifacts. Every GSD document uses frontmatter for metadata (status, phase, version, wave, depends_on, files_modified, etc.). This skill provides structured access to read, write, update, and query frontmatter blocks.
GSD documents use YAML frontmatter (delimited by ---) to store machine-readable metadata alongside human-readable markdown content. This skill corresponds to the original lib/frontmatter.cjs module.
Frontmatter appears at the top of every GSD artifact:
---