Citation Check

io.github.SecondStageTurbine/citation-checkVersion 1.0.0

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

Status

Responds132 msNov 14, 2026, 14:43 UTCAnswered our handshake without sign-in.

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Data from the official MCP Registry, checked by run.zero. How we check

Streamable HTTP

https://exmachina-ai.fly.dev/verifyResponds132 msNov 14, 2026, 14:43 UTC

No sign-in

claude mcp add --transport http citation-check https://exmachina-ai.fly.dev/verify

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Settings > Connectors > Add custom connector
Name: citation-check
Remote MCP server URL: https://exmachina-ai.fly.dev/verify

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

code --add-mcp '{"name":"citation-check","type":"http","url":"https://exmachina-ai.fly.dev/verify"}'

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2 tools

Tools of Citation Check
	Description		Read-only	Idempotent	Open world
`check_citation`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 stored about you.	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 stored about you.	No	Yes	Not declared	Yes
`verdict_meanings`The exact semantics of every status and relevance value, including what this checker cannot determine. Read once before trusting a verdict.	The exact semantics of every status and relevance value, including what this checker cannot determine. Read once before trusting a verdict.	No	Yes	Not declared	No