Use obsidian-export when an agent needs to turn an Obsidian vault into regular Markdown that other tools can index, publish, or transform. A user should invoke this instead of using Obsidian normally when the job is an export-and-normalize handoff for downstream processing, not interactive note taking. The scope boundary is clear and skill-shaped: vault conversion from Obsidian-flavored Markdown into portable Markdown output, not a generic knowledge-base app listing.