MCP server

Citation Check

io.github.SecondStageTurbine/citation-check

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

Does a cited URL exist, and does the source name what your claim names? Two answers.

Website

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

2

Token cost

About 303 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

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

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 citation-check https://exmachina-ai.fly.dev/verify

Claude Desktop

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

Codex (config.toml)

[mcp_servers.citation-check]
url = "https://exmachina-ai.fly.dev/verify"

Gemini CLI

{"mcpServers":{"citation-check":{"httpUrl":"https://exmachina-ai.fly.dev/verify"}}}

Cursor

{"mcpServers":{"citation-check":{"url":"https://exmachina-ai.fly.dev/verify"}}}

VS Code

{"servers":{"citation-check":{"type":"http","url":"https://exmachina-ai.fly.dev/verify"}}}

Antigravity

agy mcp add citation-check https://exmachina-ai.fly.dev/verify

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":"citation-check","server_url":"https://exmachina-ai.fly.dev/verify","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"citation-check","server_url":"https://exmachina-ai.fly.dev/verify"}

Tools

• check_citation ~224 tokens
  Fetch a URL and report whether it exists, and whether the source names the same entity as the claim you attach to it. These are two different questions and conflating them is the failure this exists to catch: a URL can return 200 and describe a different gene entirely. No account needed, nothing is
• verdict_meanings ~79 tokens
  The exact semantics of every status and relevance value, including what this checker cannot determine. Read once before trusting a verdict.

Browse

• GitHub tools
• GitHub and code hosting

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Badge for your README

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