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MCP Writing Toolkit — documentation

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Three MCP servers for literature work inside Claude: search the scholarly record, verify citations, read your own Zotero library, and run the deterministic checks a scoping review needs.

Just want to get started? Download a server and double-click it — Installation has the direct download links and four numbered steps. No git, no terminal, nothing else to install.

Which one do I need?

Start from your situation, not from the server names.

Your situation	Server
Need to confirm a citation actually exists	scholar — nulis_get_paper_by_doi
Searching several databases at once	scholar
Running a Scopus search for a systematic review	scholar — needs an Elsevier key
Need a legal open-access PDF for a DOI	scholar — nulis_get_open_access_pdf
Want Claude to read what is already in your library	zotero
Need BibTeX for a LaTeX manuscript	zotero — nulis_zotero_export_bibtex
Need to confirm a PDF really is the article it claims	scr-toolkit — nulis_pdf_match_records
Reconciling two screening passes and building an arbitration queue	scr-toolkit — nulis_reconcile_two_pass
Auditing the numbers in a manuscript against a fact list	scr-toolkit — nulis_manuscript_numeric_audit

All three stand alone. Installing one does not require any of the others.

Pages

• Installation — Claude Desktop, Claude Code, and where the API keys go
• scholar — 16 tools over seven open APIs, plus 5 Elsevier tools with a key
• zotero — 8 read-only tools, local and Web API modes
• scr-toolkit — 9 deterministic scoping-review tools, no key, no dependencies
• FAQ — the errors that actually come up, and why

What to know up front

No Python. All three run on the Node.js that ships inside Claude Desktop — there is nothing to install first. scholar-nulis and zotero-nulis are TypeScript bundled into a single JavaScript file; scr-toolkit-nulis is plain JavaScript with no dependencies at all.

Every scholar-nulis setting is optional. With no key at all, 16 tools work fully through arXiv, OpenAlex, Crossref, Semantic Scholar, PubMed, Europe PMC, and DOAJ. A key only adds — taking it to 21 — and is never a prerequisite.

Zotero defaults to local mode. It talks to the Zotero app on your own computer over localhost. No API key, no upload, nothing leaves your machine.

scr-toolkit-nulis needs no configuration whatsoever. No key, no fields. It also decides nothing — its nine tools check, count, match, and retrieve; eligibility decisions stay with the researcher.

Features that cannot run are not shown. Without a Scopus key the five Elsevier tools are never registered at all. The tool list you see is the list that actually works — not a menu of options that will fail.

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Installation · scholar · zotero · scr-toolkit · FAQ