MCP server

Research Paper & DOI Lookup (Crossref)

io.github.pcp183/paper-lookup

Checked 26 Oct 2026, 08:29 UTC · Connection failed

Verify a DOI or find papers via Crossref metadata. $0.005/call via x402.

Failed last check

https://paper-lookup-production-56b0.up.railway.app/mcp

At a glance

Type: MCP server
Publisher: Not verified
Status: Failed last check
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http paper-lookup https://paper-lookup-production-56b0.up.railway.app/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.paper-lookup]
url = "https://paper-lookup-production-56b0.up.railway.app/mcp"

Gemini CLI

{"mcpServers":{"paper-lookup":{"httpUrl":"https://paper-lookup-production-56b0.up.railway.app/mcp"}}}

Cursor

{"mcpServers":{"paper-lookup":{"url":"https://paper-lookup-production-56b0.up.railway.app/mcp"}}}

VS Code

{"servers":{"paper-lookup":{"type":"http","url":"https://paper-lookup-production-56b0.up.railway.app/mcp"}}}

Antigravity

agy mcp add paper-lookup https://paper-lookup-production-56b0.up.railway.app/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"paper-lookup","server_url":"https://paper-lookup-production-56b0.up.railway.app/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"paper-lookup","server_url":"https://paper-lookup-production-56b0.up.railway.app/mcp"}

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