Arxivsub MCP server

arxivsub-mcp

An MCP server for arXivSub — search arXiv and the top AI / CV / ML / robotics / NLP conferences, follow any paper to its related work, build research analytics, and manage a personal library, straight from your AI agent (Claude Desktop, Cursor, Cline, Claude Code, Windsurf, …).

arXivSub summarizes every paper into a structured 6-part breakdown (what it's about, innovations, techniques, datasets, results, limitations) and indexes it for semantic search across arXiv + CVPR, ICCV, ECCV, ICLR, ICML, NeurIPS, AAAI, MICCAI, CoRL, RSS, ACL, EMNLP, ICRA, IROS, IJCAI, SIGGRAPH, SIGGRAPH Asia. This server puts that engine directly in your agent's hands.

Get a free key (7-day trial, no credit card)

1. Sign in at https://arxivsub.comfyai.app/skills with email or Google.
2. Copy your API key from the Skills page.
3. Put it in the server config below as ARXIVSUBSKILLKEY.

New accounts get a 7-day free trial of the full skill. After that it's part of arXivSub Pro.

Install

The server runs via npx — no manual install needed. Add it to your MCP client's config.

Claude Desktop (claudedesktopconfig.json), Cursor (~/.cursor/mcp.json), Windsurf, Cline, etc.:

{
  "mcpServers": {
    "arxivsub": {
      "command": "npx",
      "args": ["-y", "arxivsub-mcp"],
      "env": { "ARXIVSUB_SKILL_KEY": "your_key_here" }
    }
  }
}

Claude Code:

claude mcp add arxivsub --env ARXIVSUB_SKILL_KEY=your_key_here -- npx -y arxivsub-mcp

Codex CLI:

codex mcp add arxivsub --env ARXIVSUB_SKILL_KEY=your_key_here -- npx -y arxivsub-mcp

Or add it to ~/.codex/config.toml directly:

[mcp_servers.arxivsub]
command = "npx"
args = ["-y", "arxivsub-mcp"]
env = { ARXIVSUB_SKILL_KEY = "your_key_here" }

Restart your client and the tools below become available.

claude.ai (remote connector)

On claude.ai there's nothing to install, add a hosted connector:

1. Settings → Connectors → Add custom connector
2. Name: arxivsub
3. Remote MCP server URL (replace YOUR_KEY with your key from https://arxivsub.comfyai.app/skills):

https://qtevnmgyobilaanrzidq.supabase.co/functions/v1/mcp?key=YOUR_KEY

1. Leave the OAuth fields empty and click Add.

This is a hosted Streamable HTTP MCP endpoint, a thin adapter over the arXivSub gateway exposing the same tools. Source: supabase/functions/mcp/index.ts.

Tools

Just ask your agent naturally — "find recent papers on LLM safety with code", "more work like this one", "how has interest in diffusion models trended by month", "save this to my "to read" collection" — and it will pick the right tool.

Notes

Shortened. The full README is on GitHub.