MCP MeasureMCP Measure

index observed

Web Evidence

Paid claim verification with cited web evidence, source provenance, snapshots, and hashes.

Should I use this

Quality & Safety

B
Description quality
80%
Schema completeness
73%
Naming quality
100%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~1,081Tokens (tool definitions)
~2.2 KBTypical response size
Moderate attention impact (0.84% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "web-evidence": {
      "url": "https://api.aisoup.net/mcp"
    }
  }
}

Remote endpoints

https://api.aisoup.net/mcpstreamable-http

What it can do

Tool inventory

Tools (5)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢list_verification_tiers

List Web Evidence verification tools, prices, and research limits. This tool is free.

Input Schema

{
  "type": "object",
  "properties": {},
  "$schema": "http://json-schema.org/draft-07/schema#"
}
⚪verify_claim_quick(claim, asOf, jurisdiction, freshnessHours, sourcePolicy, ...)

Quick verification for a narrow claim using up to 3 cited sources. Costs $0.02 USDC on Base per call.

Input Schema

{
  "type": "object",
  "properties": {
    "claim": {
      "type": "string",
      "minLength": 3,
      "maxLength": 4000,
      "description": "The factual claim to verify."
    },
    "asOf": {
      "type": "string",
      "description": "Optional YYYY-MM-DD date at which the claim should be evaluated."
    },
    "jurisdiction": {
      "type": "string",
      "maxLength": 100
    },
    "freshnessHours": {
      "type": "integer",
      "minimum": 1,
      "maximum": 8760
    },
    "sourcePolicy": {
      "type": "string",
      "enum": [
        "official_only",
        "authoritative",
        "open_web"
      ]
    },
    "minimumSources": {
      "type": "integer",
      "minimum": 1,
      "maximum": 10
    },
    "maxSources": {
      "type": "integer",
      "minimum": 1,
      "maximum": 20
    },
    "allowedDomains": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 100
    },
    "blockedDomains": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 100
    },
    "includeConflicts": {
      "type": "boolean"
    },
    "language": {
      "type": "string",
      "minLength": 2,
      "maxLength": 35
    }
  },
  "required": [
    "claim"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
⚪verify_claim(claim, asOf, jurisdiction, freshnessHours, sourcePolicy, ...)

Standard verification with balanced evidence coverage. Costs $0.05 USDC on Base per call.

Input Schema

{
  "type": "object",
  "properties": {
    "claim": {
      "type": "string",
      "minLength": 3,
      "maxLength": 4000,
      "description": "The factual claim to verify."
    },
    "asOf": {
      "type": "string",
      "description": "Optional YYYY-MM-DD date at which the claim should be evaluated."
    },
    "jurisdiction": {
      "type": "string",
      "maxLength": 100
    },
    "freshnessHours": {
      "type": "integer",
      "minimum": 1,
      "maximum": 8760
    },
    "sourcePolicy": {
      "type": "string",
      "enum": [
        "official_only",
        "authoritative",
        "open_web"
      ]
    },
    "minimumSources": {
      "type": "integer",
      "minimum": 1,
      "maximum": 10
    },
    "maxSources": {
      "type": "integer",
      "minimum": 1,
      "maximum": 20
    },
    "allowedDomains": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 100
    },
    "blockedDomains": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 100
    },
    "includeConflicts": {
      "type": "boolean"
    },
    "language": {
      "type": "string",
      "minLength": 2,
      "maxLength": 35
    }
  },
  "required": [
    "claim"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
⚪verify_claim_deep(claim, asOf, jurisdiction, freshnessHours, sourcePolicy, ...)

Deep verification for compound or contested claims using up to 15 cited sources. Costs $0.12 USDC on Base per call.

Input Schema

{
  "type": "object",
  "properties": {
    "claim": {
      "type": "string",
      "minLength": 3,
      "maxLength": 4000,
      "description": "The factual claim to verify."
    },
    "asOf": {
      "type": "string",
      "description": "Optional YYYY-MM-DD date at which the claim should be evaluated."
    },
    "jurisdiction": {
      "type": "string",
      "maxLength": 100
    },
    "freshnessHours": {
      "type": "integer",
      "minimum": 1,
      "maximum": 8760
    },
    "sourcePolicy": {
      "type": "string",
      "enum": [
        "official_only",
        "authoritative",
        "open_web"
      ]
    },
    "minimumSources": {
      "type": "integer",
      "minimum": 1,
      "maximum": 10
    },
    "maxSources": {
      "type": "integer",
      "minimum": 1,
      "maximum": 20
    },
    "allowedDomains": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 100
    },
    "blockedDomains": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 100
    },
    "includeConflicts": {
      "type": "boolean"
    },
    "language": {
      "type": "string",
      "minLength": 2,
      "maxLength": 35
    }
  },
  "required": [
    "claim"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢verify_claim_research(claim, asOf, jurisdiction, freshnessHours, sourcePolicy, ...)

Research-grade verification with the largest search and evidence budget. Costs $0.25 USDC on Base per call.

Input Schema

{
  "type": "object",
  "properties": {
    "claim": {
      "type": "string",
      "minLength": 3,
      "maxLength": 4000,
      "description": "The factual claim to verify."
    },
    "asOf": {
      "type": "string",
      "description": "Optional YYYY-MM-DD date at which the claim should be evaluated."
    },
    "jurisdiction": {
      "type": "string",
      "maxLength": 100
    },
    "freshnessHours": {
      "type": "integer",
      "minimum": 1,
      "maximum": 8760
    },
    "sourcePolicy": {
      "type": "string",
      "enum": [
        "official_only",
        "authoritative",
        "open_web"
      ]
    },
    "minimumSources": {
      "type": "integer",
      "minimum": 1,
      "maximum": 10
    },
    "maxSources": {
      "type": "integer",
      "minimum": 1,
      "maximum": 20
    },
    "allowedDomains": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 100
    },
    "blockedDomains": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 100
    },
    "includeConflicts": {
      "type": "boolean"
    },
    "language": {
      "type": "string",
      "minLength": 2,
      "maxLength": 35
    }
  },
  "required": [
    "claim"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Community

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Evidence

Recent observations

verifiedversion not recorded5 tools