SCRIPTMASTERLABS — ClaimGate

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.

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.

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.

无需输入参数。

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.

无需输入参数。

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).