A well-architected literature search tool that routes across PubMed, CrossRef, arXiv, Scopus, and ScienceDirect through a clean static/dynamic layer split. It detects which workflow you need (multi-source search, citation verification, MeSH strategy building, citation file conversion, or reference management) and loads only that fragment plus its dependencies. The T1→T2→T3 fallback chain, shared dedup engine, and format converters (nbib/ris/bib) are all on-demand references. If you're doing serious academic writing and need coordinated multi-step workflows instead of one-off API calls, this handles the orchestration. The routing protocol is disciplined: manifest, detect, load, run, with no guessing from memory.
npx skills add https://github.com/yuan1z0825/nature-skills --skill nature-academic-search