Paper Nexus

us.papernexPublished by papernex.usOfficial publisherv1.0.0Updated Oct 30, 2026

Find related scientific papers through their citation network, from OpenAlex and Semantic Scholar.

VerifiedStreamable HTTPWeb executableWeb Search & ScrapingKnowledge & Memory

Overview

AI-generated overview

Remote MCP server that lets an assistant find scientific papers and citation-network recommendations from OpenAlex and Semantic Scholar.

What you can do
  • Look up a paper by title, DOI or link and get its Paper Nexus id
  • Get one paper's details and its most-cited references
  • Recommend related papers across one or more origin papers, with filters for years, citations, authors, venues, open access and document types
  • List the papers citing a given paper
  • Read the user's Paper Nexus library and check remaining usage allowance
When to use it
Useful when doing literature reviews or reading around a paper and you want the assistant to trace citations, find related work, or suggest papers not yet saved in a library. It suits researchers and students who already use or are willing to create a Paper Nexus account.
Requirements
A remote Streamable HTTP endpoint; nothing to install locally. A Paper Nexus account signed in through OAuth on first connection (a free account works); no API keys. Optional read-only library access is requested separately. Usage is limited by plan: free accounts get 10 counted calls a week and 100 lookups a day, with 30 calls a minute per tool.
Before you install
Recommendation and citing-list calls count against a limited allowance, and Premium is a paid plan. Library access is an extra read-only permission granted at connect time. Recommendation requests are saved to the user's Paper Nexus history, and the service sees the tool calls made, not the conversation. Access can be reviewed and revoked in account settings.

Installation

In SourceWeft

  1. Open Paper Nexus in the dashboard and add it to a workspace.
  2. Connect the required credentials. They are stored privately and never shown on public pages.
  3. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/us.papernex%2Fpapernexus/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config. The client completes OAuth sign-in on first connect.

{
  "mcpServers": {
    "paper-nexus": {
      "type": "http",
      "url": "https://papernex.us/mcp"
    }
  }
}

README

[Paper Nexus]

Paper Nexus for AI assistants

Find related scientific papers through their citation network, from Claude, ChatGPT, Cursor, VS Code or any MCP client.

[MCP Badge]

Paper Nexus maps the scientific literature by its citations, using the scholarly works in OpenAlex and Semantic Scholar. This repository holds its MCP server's public definition: the connection details, a Claude Code plugin, a Gemini CLI extension, the MCP Registry entry, and the tool reference. The server itself is hosted; there is nothing to install or run.

https://papernex.us/mcp

Ask your assistant things like:

  • "Find papers related to Attention Is All You Need and BERT together."
  • "What are the main references of the AlphaFold 2 paper, and what else should I read around it?"
  • "Starting from https://arxiv.org/abs/1512.03385, which papers on residual networks should I read?"
  • "Go through my Thesis / Methods collection and suggest papers I haven't saved."

Every paper it returns links to papernex.us, and each set of recommendations comes with a link that opens the whole citation graph in Paper Nexus.

Connect

You sign in with a Paper Nexus account the first time you connect; a free account works. There are no API keys: the server uses OAuth, so your assistant opens a Paper Nexus page where you sign in and allow access.

Claude (claude.ai and Claude Desktop)

Settings → Connectors → Add custom connector. Name it Paper Nexus, give the URL https://papernex.us/mcp, then Connect and sign in.

Claude Code

bash
claude mcp add --transport http papernexus https://papernex.us/mcp

Or install the plugin, which adds a skill that teaches Claude a literature-search workflow with these tools:

bash
claude plugin marketplace add PaperNexus/papernexus-mcpclaude plugin install papernexus@papernexus

Then run /mcp, choose papernexus, and sign in.

ChatGPT

Turn on developer mode (Settings → Apps → Advanced settings), then create an app with the URL https://papernex.us/mcp and OAuth authentication, and sign in.

Cursor

Install in Cursor, or add it to ~/.cursor/mcp.json:

json
{  "mcpServers": {    "papernexus": {      "url": "https://papernex.us/mcp"    }  }}

VS Code

Install in VS Code, or add it to .vscode/mcp.json:

json
{  "servers": {    "papernexus": {      "type": "http",      "url": "https://papernex.us/mcp"    }  }}

Gemini CLI

bash
gemini extensions install https://github.com/PaperNexus/papernexus-mcp

Other clients

Any client that speaks MCP over Streamable HTTP with OAuth can connect to https://papernex.us/mcp. The server supports Client ID Metadata Documents and dynamic client registration, and every protocol revision from 2025-03-26 on.

Tools

ToolWhat it does
search_papersFind a paper by its title, a DOI or a link, and get its Paper Nexus id
recommend_papersPapers related to one or more papers through their citation network
get_paperOne paper's details and its most-cited references
get_usageHow many counted calls your account has left
list_libraryYour Paper Nexus library, if you allow "Read your library" when connecting
list_citing_papersThe papers citing one paper

recommend_papers and list_citing_papers also take filters (years, citation counts, authors, venues, title words, citing or cited papers, open access, document types) on every account. Each recommendation says which origin papers it is linked to and how, so your assistant can tell you why a paper is there. Every tool that lists papers takes fields, to return only the details you need, such as titles and years. Arguments and results are in the tool reference. Every tool is read-only.

Allowance

recommend_papers and list_citing_papers count against your allowance. The other tools share a larger daily limit of lookups, and every tool a limit of 30 calls a minute. get_usage tells your assistant how many calls are left.

PlanCounted callsLookupsOrigin papers per recommendation
Free10 a week100 a dayup to 2
Premium200 a day1,000 a dayup to 10

A filtered call is counted like any other. A recommendation or citing list that fails or finds nothing isn't counted. See pricing for Premium.

Privacy and access

  • Connecting asks for your permission on a Paper Nexus page that names the app and where it will send you back. Library access is asked for separately and is read-only.
  • Paper Nexus never sees your conversation, only the tool calls your assistant makes. Recommendation requests are saved to your Paper Nexus history, as on the site.
  • You can see and revoke connected apps in Paper Nexus under Account settings → AI assistants.

Privacy policy · Terms

Support

Open an issue or email [email protected].

License

The files in this repository are MIT licensed; see LICENSE. The Paper Nexus service and its data are covered by its terms.

Source: README.md at commit 31dcf2d

Tools

0
This server asks you to sign in, so SourceWeft could not read its tools without an account and has not indexed them. What a connected account sees can depend on that account and its permissions.

Version history

1
  1. v1.0.0LatestOct 30, 2026

Score

85% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts