Citation & Source Verification — hosted on Cloudflare Workers (HTTP + npm stdio)
@guptaprakhariitr
About Citation & Source Verification — hosted on Cloudflare Workers (HTTP + npm stdio)
MCP server for verification-mcp — see README
Basic information
Config
Add this server to your MCP-compatible client using the configuration below.
{
"mcpServers": {
"verification-mcp": {
"command": "npx",
"args": [
"-y",
"@insnapsprakhar/verification-mcp"
]
}
}
}Tools
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Overview
What is Citation & Source Verification?
It is an MCP server that verifies factual claims and citations in real time by querying Wikipedia, Wikidata, Crossref, and the Wayback Machine. It is built for AI agents, journalists, and researchers needing automated fact-checking and source verification.
How to use Citation & Source Verification?
Point any MCP‑aware client at the hosted endpoint via mcp-remote or the npm launcher @insnapsprakhar/verification-mcp. Configure Cursor, Claude Desktop, or custom agents with the endpoint URL and a Bearer API key. Free‑tier callers can use the server anonymously without a key.
Key features of Citation & Source Verification
- Real‑time fact‑checking against Wikipedia, Wikidata, and Crossref
- Citation URL verification and claim matching
- Source freshness checks via Wayback Machine
- Returns verdict: supported, contradicted, or mixed
- Bearer token authentication with free tier available
- Supports MCP clients like Cursor, Claude Desktop, and custom agents
Use cases of Citation & Source Verification
- Guard against LLM hallucinations by verifying generated claims
- Automate citation validation in research and journalism workflows
- Check source freshness and availability for content curation
- Integrate fact‑checking into AI agent QA loops before user‑facing output
FAQ from Citation & Source Verification
What tools does Citation & Source Verification expose?
Three tools: fact_check (verify a claim), cite_check (verify cited URLs), and source_freshness (check if a source URL is live and its last‑modified date).
How do I get an API key?
Visit the /upgrade page (e.g., ?tier=solo), pay via Dodo Payments, and receive a unique key on the /welcome page. The key is displayed once and can be rotated from the /account page.
Is there a free tier?
Yes. Anonymous callers without an API key can make up to 100 calls per month per IP, with a rate limit of 10 requests per minute.
What data sources does Citation & Source Verification use?
It queries the Wikipedia REST API, Wikidata (CC0), Crossref (free public API), and the Wayback Machine (free public API). The server acts as a caching and auth layer over these sources.
What pricing tiers are available?
Free ($0, 100 calls/mo), Solo ($19/mo, 2,000 calls), Team ($49/mo, 10,000 calls + 5 seats), and Pro ($149/mo, 50,000 calls + 25 seats). All paid plans include higher rate limits and team‑sharing features.
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