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SCRIPTMASTERLABS — ClaimGate MCP Server

by scriptmasterlabs Your server? Claim it
answering

SCRIPTMASTERLABS — ClaimGate is answering right now. Last checked 12 min ago. It exposes 5 tools.

Fact-check claims against live web sources: verbatim evidence, coherence-gated verdict.

Uptime history 23 hours of history
23 hours agonow
100.0%
Uptime 24h
86 of 86 checks
5
Tools
read from the server
302 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 2

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 2 November 2026. No other catalogue keeps this.

3 Nov a tool description was rewritten fact_check_claim
2 Nov a tool description was rewritten fact_check_claim

Nothing serious here today

Today is the operative word: we check SCRIPTMASTERLABS — ClaimGate every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 12 min ago.

run in your terminal
claude mcp add claimgate --transport http https://claimgate.onrender.com/mcp
Settings → Connectors → Add custom connector, then paste this address
https://claimgate.onrender.com/mcp
~/.codex/config.toml
[mcp_servers.claimgate]
url = "https://claimgate.onrender.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "claimgate": {
      "url": "https://claimgate.onrender.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "claimgate": {
      "type": "http",
      "url": "https://claimgate.onrender.com/mcp"
    }
  }
}

Available tools 5

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

fact
fact_check_claim
PAID tool ($0.25 USDC via x402 — pay in USDC on Base, USDC on Arc, USDC on Solana, XRP on XRPL at the live spot rate, or XAH on Xahau at the live spot rate). Fact-check a claim against live web sources: the claim is decomposed into sub-claims, sources are fetched live, Jev jurors judge per-source-family entailment with verbatim-quote evidence that must pass an anti-hallucination substring gate, and the verdict is coherence-gated (coherence = |sum(w*d)| / sum(w) over source families, weights 3/2/1 by source class) and sealed as a stored receipt. Send the x402 PAYMENT-SIGNATURE header on the /mcp request; without payment the call returns the canonical x402 challenge (HTTP 402 with five accepts: Base USDC amount 250000 = $0.25, Solana USDC amount 250000, XRPL XRP in drops at the live spot rate, Arc USDC amount 250000, and Xahau XAH in drops at the live spot rate, each to that rail canonical SML receiver). If the jury is not configured the call fails before any payment is requested, so nobody pays for a check that cannot run.
fact_check_methodology
The full public ClaimGate methodology: coherence formula, source-class weights, verdict thresholds, the anti-hallucination verbatim-quote gate, family independence rules, and honest limits. calibrated:false — thresholds are stated, not fitted.
fact_check_preview
Free preview: decompose a claim into sub-claims, fetch the sources live (or search for them), classify each source and group sources into independent families, and show exactly what a paid fact_check_claim would check. No verdict, no jury calls, no payment.
fact_check_receipt
Fetch a stored ClaimGate receipt by receipt_id (the sealed record of a paid fact check: sub-claims, sources, per-family verdicts with validated verbatim quotes, coherence, verdict, and payment).
fact_check_status
Check whether ClaimGate is live, whether the Jev jury is configured, which x402 facilitator is selected, how many receipts are stored, and the paid-check price.

Endpoints

URLTransportStateLatencyChecked
https://claimgate.onrender.com/mcp streamable-http answering 234 ms 12 min ago

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SCRIPTMASTERLABS — ClaimGate — questions

Answers built from our own checks of this server.

What can SCRIPTMASTERLABS — ClaimGate do?
It exposes 5 tools, read directly from the server on our last check. Among them: fact_check_claim, fact_check_methodology, fact_check_preview, fact_check_receipt, fact_check_status. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is SCRIPTMASTERLABS — ClaimGate working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 86 of 86 checks got a reply (100.0%), average response time 302 ms. The bar chart above shows every period we have measured.
How do I connect SCRIPTMASTERLABS — ClaimGate?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does SCRIPTMASTERLABS — ClaimGate need an API key?
No. SCRIPTMASTERLABS — ClaimGate completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is SCRIPTMASTERLABS — ClaimGate?
It answers our handshake in 302 ms on average, which is faster than 47% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.