Source Claim Proof

Verify whether a supplied public source currently supports one atomic factual claim.

Sollte ich dies verwenden

Qualität und Sicherheit

A
Qualität der Beschreibung
100%
Vollständigkeit des Schemas
100%
Qualität der Benennung
100%
Risiko der Vergiftung
100%
Übereinstimmung der Berechtigungen
100%
Einhaltung des Protokolls
100%

Basierend auf einer automatisierten Analyse der Tool-Definitionen und der Einhaltung des Protokolls.

Kontextkosten

~600Tokens (Tool-Definitionen)
~7.0 KBTypische Antwortgröße
Minimale Auswirkung auf die Aufmerksamkeit (0.47% von 128k Kontext)

Dies ist die ungefähre Anzahl der Tokens, die jedes Mal verbraucht werden, wenn die Tools des Servers in den Kontext eines Modells geladen werden. Höhere Werte verringern die Aufmerksamkeit, die für andere Aufgaben verfügbar ist.

Installieren

Installation mit einem Klick

Fügen Sie dies Ihrer Datei `claude_desktop_config.json` hinzu:

{
  "mcpServers": {
    "verify-source-claim": {
      "url": "https://source-claim-proof.mattskowronis.workers.dev/mcp"
    }
  }
}

Remote-Endpunkte

https://source-claim-proof.mattskowronis.workers.dev/mcpstreamable-http

Was es kann

Tool-Inventar

Tools (1)

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🟢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.

Eingabe-Schema

{
  "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
}

Ausgabe-Schema

{
  "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
}

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