Source Claim Proof
Verify whether a supplied public source currently supports one atomic factual claim.
使うべきか
品質と安全性
A
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
~600トークン数（ツール定義）
~7.0 KB一般的なレスポンスサイズ
注意への影響は最小限（128k コンテキストの 0.47%）
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": {
"verify-source-claim": {
"url": "https://source-claim-proof.mattskowronis.workers.dev/mcp"
}
}
}リモートエンドポイント
https://source-claim-proof.mattskowronis.workers.dev/mcpstreamable-httpできること
ツール一覧
ツール（1）
🟢 読み取り専用🟡 書き込み🔴 削除⚪ 不明
🟢verify_source_claim(url, claim)
Verify one atomic factual claim against one public source URL. Return supported, contradicted, or insufficient-evidence with source snippets, or explicit blocked/unreachable/unsupported states. Not a general fact checker.
入力スキーマ
{
"type": "object",
"properties": {
"url": {
"type": "string",
"maxLength": 2048,
"description": "Public HTTP or HTTPS source page URL to inspect."
},
"claim": {
"type": "string",
"minLength": 3,
"maxLength": 500,
"description": "One atomic factual assertion to check against that source only."
}
},
"required": [
"url",
"claim"
],
"additionalProperties": false
}出力スキーマ
{
"type": "object",
"properties": {
"verdict": {
"type": "string",
"enum": [
"supported",
"contradicted",
"insufficient_evidence"
],
"description": "supported, contradicted, or insufficient_evidence."
},
"claim": {
"type": "string",
"description": "The claim that was checked."
},
"source_url": {
"type": "string",
"description": "Requested source URL."
},
"final_url": {
"type": "string",
"description": "Final URL after redirects."
},
"source_status": {
"type": "string",
"enum": [
"verified",
"blocked",
"unreachable",
"unsupported",
"insufficient_evidence"
],
"description": "verified, blocked, unreachable, unsupported, or insufficient_evidence."
},
"evidence": {
"type": "array",
"maxItems": 3,
"description": "Compact source snippets used for the verdict.",
"items": {
"type": "object",
"additionalProperties": false,
"required": [
"text",
"location",
"evidence_type",
"polarity"
],
"properties": {
"text": {
"type": "string",
"maxLength": 240,
"description": "Source snippet that supports or contradicts the claim."
},
"location": {
"type": [
"string",
"null"
],
"description": "Page location of the snippet, or null if unknown."
},
"evidence_type": {
"type": "string",
"enum": [
"visible_text",
"heading",
"json_ld",
"meta",
"status"
],
"description": "Where the snippet came from on the source page."
},
"polarity": {
"type": "string",
"enum": [
"supports",
"contradicts",
"neutral"
],
"description": "Whether the snippet supports, contradicts, or is neutral."
}
}
}
},
"reasoning_summary": {
"type": "string",
"maxLength": 400,
"description": "Short machine-readable reason for the verdict."
},
"retrieval_method": {
"type": "string",
"enum": [
"direct_http",
"browser_run",
"official_api",
"unsupported"
],
"description": "How the source page was fetched."
},
"retrieved_at": {
"type": "string",
"description": "UTC timestamp of the check."
},
"content_hash": {
"type": "string",
"description": "Hash of retrieved source content."
},
"service_version": {
"type": "string",
"description": "Source Claim Proof service version."
}
},
"required": [
"verdict",
"claim",
"source_url",
"final_url",
"source_status",
"evidence",
"reasoning_summary",
"retrieval_method",
"retrieved_at",
"content_hash",
"service_version"
],
"additionalProperties": false
}コミュニティ
エビデンス
最近の観測
検証済みバージョンは記録されていませんツール 1 件
検証済みバージョンは記録されていませんツール 1 件