Config is the same across clients — only the file and path differ.
{
"mcpServers": {
"io-github-oscardvs-zoteus": {
"args": [
"-y",
"@oscardvs/zoteus"
],
"command": "npx"
}
}
}Are you the author?
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The everything Zotero MCP server. Give Claude, Cursor, and any MCP client complete, safe access to your Zotero library — search papers, add by DOI, format bibliographies in ~2,800 styles, run semantic search over your own PDFs, and ground every answer in a source you actually own. Local-first. Private. One command.
Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.
npx -y '@oscardvs/zoteus' 2>&1 | head -1 && echo "✓ Server started successfully"
After testing, let us know if it worked:
Five weighted categories — click any category to see the underlying evidence.
No known CVEs.
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The everything Zotero MCP server. Give Claude, Cursor, and any MCP client complete, safe access to your Zotero library — search papers, add by DOI, format bibliographies in ~2,800 styles, run semantic search over your own PDFs, and ground every answer in a source you actually own. Local-first. Private. One command.
npx -y @oscardvs/zoteus
| Client | Command |
|---|---|
| Claude Code | claude mcp add --transport stdio zoteus -- npx -y @oscardvs/zoteus |
| Cursor / VS Code / Claude Desktop / Codex / Zed… | npx add-mcp @oscardvs/zoteus |
| Claude Desktop (one-click) | download zoteus.mcpb from the latest release → double-click |
| claude.ai (web) | Add custom connector → your hosted URL (OAuth) |
Add your cloud key for writes/sync/groups (optional — reads work key-free against the desktop app):
claude mcp add --transport stdio zoteus -e ZOTERO_API_KEY=xxxxx -- npx -y @oscardvs/zoteus
Get a key at zotero.org/settings/keys. For key-free local reads, enable Settings → Advanced → "Allow other applications on this computer to communicate with Zotero" in the desktop app.
There are several Zotero MCP servers now. Zoteus is the one that does everything — and adds the parts everyone else skips. The difference that matters: Zoteus treats your library as the source of truth, not a search index. When you ask Claude to "draft a methods paragraph citing the five most relevant papers in my collection," it runs that against your verified, already-curated references — no invented citations, no Python stack, nothing leaves your machine.
| Zoteus | Other Zotero MCP servers | Web AI (Elicit/SciSpace) | |
|---|---|---|---|
| Operates on your own library | ✅ | ✅ (varies) | ❌ (web-wide) |
| Complete Web API v3 + desktop local API | ✅ | partial | n/a |
| Safe transactional writes (reversible, gated) | ✅ | rare | ❌ |
| CSL bibliographies (~2,800 styles) | ✅ | rare | ❌ |
| Local hybrid semantic search over PDFs | ✅ | some (cloud) | varies |
No Python — TypeScript, one npx | ✅ | varies | n/a |
| MCP Resources + Prompts + code-execution | ✅ | ❌ | n/a |
| Local-first / private · Open-source (MIT) | ✅ | varies | ❌ |