MCP server

Citation Checker

app.openkrill/citations

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Paste a bibliography or a single reference and find out whether the papers are real.

Working at last checkVerified publisher: openkrill.appAbout 927 tokens per request once connected3 tools

https://citations.openkrill.app/mcp

At a glance

Type: MCP server
Publisher: openkrill.app (verified by the MCP Registry)
Status: Working at last check
Tools: 3
Token cost: About 927 tokens per request
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 citations https://citations.openkrill.app/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.citations]
url = "https://citations.openkrill.app/mcp"

Gemini CLI

{"mcpServers":{"citations":{"httpUrl":"https://citations.openkrill.app/mcp"}}}

Cursor

{"mcpServers":{"citations":{"url":"https://citations.openkrill.app/mcp"}}}

VS Code

{"servers":{"citations":{"type":"http","url":"https://citations.openkrill.app/mcp"}}}

Antigravity

agy mcp add citations https://citations.openkrill.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":"citations","server_url":"https://citations.openkrill.app/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"citations","server_url":"https://citations.openkrill.app/mcp"}

check_references ~350 tokens
Use this when the user asks "are these references real?", "check my bibliography", "verify this citation", "is this DOI correct?" or "has this paper been retracted?". Pass each reference as one string as written (authors, year, title, journal, DOI), or just a DOI or a title, up to 10 at a time. Look

Scholar Sidekick
Catch AI-fabricated citations (real DOI + fake title). Retraction, open-access, 10,000+ CSL styles.
Manusights
Check if references exist or were retracted, look up journal AI policies, and preview manuscripts.
CiteMe
Search papers, format citations in 60 styles, and verify bibliographies against scholarly sources.
HasData
All HasData scraping tools in one MCP server: Google, TikTok, Instagram, maps, e-commerce and more.
Opencitations
OpenCitations MCP — citation index (COCI + general Index API).
Balthasar & Speyr Catalogue
Public catalogue, semantic search and source texts of Hans Urs von Balthasar and Adrienne von Speyr.
Phở Research Tools
Verifies AI-written references; finds real papers, evidence, datasets and research tools; PRISMA.
Tomesphere
Search 8.5M scientific papers with LLM TLDRs, citations, linked entities, figures, and full text.

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