SCRIPTMASTERLABS — ClaimGate
Fact-check claims against live web sources: verbatim evidence, coherence-gated verdict.
使うべきか
品質と安全性
ツール定義とプロトコルへの準拠に関する自動分析に基づいています。
コンテキストコスト
これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。
インストール
ワンクリックインストール
これを `claude_desktop_config.json` ファイルに追加してください:
{
"mcpServers": {
"claimgate": {
"url": "https://claimgate.onrender.com/mcp"
}
}
}リモートエンドポイント
https://claimgate.onrender.com/mcpstreamable-httpできること
ツール一覧
ツール（5）
🟡fact_check_claim(claim, sources, sub_claims)
PAID tool ($0.25 USDC via x402, Base). 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, amount 250000 = $0.25 USDC, payTo of the 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.
入力スキーマ
{
"type": "object",
"properties": {
"claim": {
"type": "string",
"minLength": 10,
"maxLength": 2000,
"description": "The claim to fact-check, as a single statement or a short paragraph."
},
"sources": {
"type": "array",
"maxItems": 8,
"items": {
"type": "string",
"maxLength": 2048
},
"description": "Optional public HTTPS source URLs to check against (max 8). When omitted or fewer than 2 are usable, ClaimGate searches the live web."
},
"sub_claims": {
"type": "array",
"maxItems": 4,
"items": {
"type": "string",
"minLength": 8,
"maxLength": 2000
},
"description": "Optional caller-provided decomposition of the claim into sub-claims (max 4). When omitted, the claim text is split into sentences."
}
},
"required": [
"claim"
],
"additionalProperties": false
}🟢fact_check_preview(claim, sources)
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.
入力スキーマ
{
"type": "object",
"properties": {
"claim": {
"type": "string",
"minLength": 10,
"maxLength": 2000,
"description": "The claim to fact-check, as a single statement or a short paragraph."
},
"sources": {
"type": "array",
"maxItems": 8,
"items": {
"type": "string",
"maxLength": 2048
},
"description": "Optional public HTTPS source URLs to check against (max 8). When omitted or fewer than 2 are usable, ClaimGate searches the live web."
}
},
"required": [
"claim"
],
"additionalProperties": false
}🟢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.
入力スキーマ
{
"type": "object",
"properties": {},
"additionalProperties": false
}🟢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.
入力スキーマ
{
"type": "object",
"properties": {},
"additionalProperties": false
}🟢fact_check_receipt(receipt_id)
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).
入力スキーマ
{
"type": "object",
"properties": {
"receipt_id": {
"type": "string",
"minLength": 4,
"maxLength": 128,
"description": "Receipt id returned by fact_check_claim, e.g. cg_..._........"
}
},
"required": [
"receipt_id"
],
"additionalProperties": false
}コミュニティ
エビデンス