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Citation Check

R0· no sign-in

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

v1.0.0 · active · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality85good
Trust77of 100
Uptime, 30 days100%
Latency p50147 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "citation-check": {
      "type": "http",
      "url": "https://exmachina-ai.fly.dev/verify"
    }
  }
}
claude mcp add --transport http citation-check https://exmachina-ai.fly.dev/verify
[mcp_servers.citation-check]
url = "https://exmachina-ai.fly.dev/verify"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "citation-check": {
      "type": "remote",
      "url": "https://exmachina-ai.fly.dev/verify",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "citation-check": {
      "type": "http",
      "url": "https://exmachina-ai.fly.dev/verify"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=citation-check&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vZXhtYWNoaW5hLWFpLmZseS5kZXYvdmVyaWZ5In0%3D"
}
{
  "servers": {
    "citation-check": {
      "type": "http",
      "url": "https://exmachina-ai.fly.dev/verify"
    }
  }
}
{
  "mcpServers": {
    "citation-check": {
      "httpUrl": "https://exmachina-ai.fly.dev/verify"
    }
  }
}
extensions:
  "citation-check":
    enabled: true
    name: "citation-check"
    type: streamable_http
    uri: "https://exmachina-ai.fly.dev/verify"
    timeout: 300

Quality 85 / 100good

protocol75 · weight 25
  • warn
    protocol.modernnewest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
  • n/a
    protocol.statelessonly applies to 2026-07-28 servers
  • pass
    protocol.transportstreamable HTTP
  • n/a
    protocol.list_ttlonly applies to 2026-07-28 servers
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene86 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • pass
    tools.annotations2 of 2 tools declare readOnlyHint or destructiveHint
  • fail
    tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: verdict_meanings (idempotentHint); check_citation (idempotentHint)
  • pass
    tools.token_costabout 276 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changesno tool changes in 30 days
  • pass
    stability.rug_pullno tool changed its meaning under the same name
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

2 tools, about 276 tokens to load them all · tool set 1cfce1ab53c5 · checked 2026-10-19 10:52 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 77 / 100

no-repository
provenance45
liveness100
freshness85
hygiene80

+website +reachable +uptime-100% ~updated-66d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://exmachina-ai.fly.dev/verify streamable-httpnoneyes100%147 ms2025-06-182026-10-19

Tools (2)

check_citationread-onlyFetch 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.
verdict_meaningsread-onlyThe exact semantics of every status and relevance value, including what this checker cannot determine. Read once before trusting a verdict.

Schemas: list_tools.

Similar MCP servers

More from io.github.SecondStageTurbine

Official server.json
{
  "name": "io.github.SecondStageTurbine/citation-check",
  "title": "Citation Check",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://exmachina-ai.fly.dev/verify",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0",
  "websiteUrl": "https://exmachina-ai.fly.dev/verify",
  "description": "Does a cited URL exist, and does the source name what your claim names? Two answers."
}