MCP MeasureMCP Measure

index observed

Agent Purchase Verification

Check if an ecommerce purchase meets buyer rules before payment. Returns PASS, FAIL, or REVIEW.

Should I use this

Quality & Safety

A
Description quality
100%
Schema completeness
68%
Naming quality
100%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~278Tokens (tool definitions)
~2.8 KBTypical response size
Minimal attention impact (0.22% 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": {
    "agent-purchase-verification": {
      "url": "https://web-production-855eb4.up.railway.app/mcp/"
    }
  }
}

Remote endpoints

https://web-production-855eb4.up.railway.app/mcp/streamable-http

What it can do

Tool inventory

Tools (1)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢verify_purchase(product_url, buyer_country, requirements, merchant, product_or_scenario, ...)

Check whether a proposed ecommerce purchase satisfies buyer-defined constraints before money is committed. Returns PASS, FAIL, or REVIEW with supporting evidence. Use REVIEW when evidence is incomplete, ambiguous, conditional, stale, or conflicting.

Input Schema

{
  "type": "object",
  "properties": {
    "product_url": {
      "title": "Product Url",
      "type": "string"
    },
    "buyer_country": {
      "title": "Buyer Country",
      "type": "string"
    },
    "requirements": {
      "additionalProperties": true,
      "title": "Requirements",
      "type": "object"
    },
    "merchant": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Merchant"
    },
    "product_or_scenario": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Product Or Scenario"
    },
    "buyer_region": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Buyer Region"
    },
    "buyer_postal_code": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Buyer Postal Code"
    },
    "transaction_facts": {
      "anyOf": [
        {
          "additionalProperties": true,
          "type": "object"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Transaction Facts"
    }
  },
  "required": [
    "product_url",
    "buyer_country",
    "requirements"
  ],
  "title": "mcp_verify_purchaseArguments"
}

Output Schema

{
  "type": "object",
  "additionalProperties": true,
  "title": "mcp_verify_purchaseDictOutput"
}

Community

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Evidence

Recent observations

verifiedversion not recorded1 tools