Book Crosslink

Post-processing pass that wires up an already-generated collection of book-topic-article notes, with three responsibilities: (1) cross-referencing between article bodies via Obsidian [[wikilinks]] wherever one article's prose mentions another's topic or a subsection concept, including similarity-based near-miss matches, not just exact ones; (2) linking each entry in vaults/[book]/book-guidelines.md's Topic List to its corresponding generated article, once that article exists; (3) fully assembling/maintaining the vault's "index.md" Map-of-Content note from that same linked Topic List. This is the sole owner of book-guidelines.md's link updates and of the Index note — book-topic-article and book-topic-batch only ever generate the topic articles themselves, never touch book-guidelines.md, and never produce an index. Runs a bundled deterministic script (scripts/crosslink.py) rather than hand-editing prose, so it's safe to re-run repeatedly as new articles get added. Manual invocation only — invoke explicitly with /book-crosslink, never automatically.

vaults/[book]/*.md                    <- input AND output: existing generated articles, edited in place
vaults/[book]/book-guidelines.md          <- input AND output: only the Topic List section is ever touched
vaults/[book]/index.md       <- output: fully (re)derived from book-guidelines.md's Topic List each run
…

mkdir -p ~/.claude/skills/book-crosslink
curl -L https://claudskills.com/skills/book-crosslink/SKILL.md \
  -o ~/.claude/skills/book-crosslink/SKILL.md

@misc{book-crosslink-2026,
  author    = {superoptimo},
  title     = {Book Crosslink [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/book-crosslink/}
}