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Penny Engine — Agent Operations

Remote MCP utilities for agents: structured data, commerce checks, and x402 paid API discovery.

我該用這個嗎

品質與安全性

A
說明品質
94%
結構描述完整度
81%
命名品質
80%
汙染風險
100%
權限相符程度
90%
協定合規性
100%

發現項目（1）

  • LOWTool 'penny_url_clean' suggests web access but openWorldHint=false在 penny_url_clean 中

根據工具定義與協定合規性的自動化分析。

上下文成本

~1,957Token（工具定義）
~745 B典型回應大小
中等的注意力影響（128k 上下文的 1.53%）

這是每次將伺服器的工具載入模型上下文時所消耗的約略 token 數量。數量越高，可用於其他工作的注意力就越少。

安裝

一鍵安裝

將以下內容加入你的 `claude_desktop_config.json` 檔案：

{
  "mcpServers": {
    "penny-engine": {
      "url": "https://penny-agent-api-production.up.railway.app/mcp"
    }
  }
}

遠端端點

https://penny-agent-api-production.up.railway.app/mcpstreamable-http

它能做什麼

工具清單

工具（16）

🟢 唯讀🟡 寫入🔴 刪除⚪ 未知
🟢penny_margin(price, variableCost, fixedCost)

Unit margin, markup and break-even units. Free, no signup, deterministic.

輸入結構描述

{
  "type": "object",
  "properties": {
    "price": {
      "type": "number"
    },
    "variableCost": {
      "type": "number"
    },
    "fixedCost": {
      "type": "number"
    }
  },
  "required": [
    "price",
    "variableCost"
  ],
  "additionalProperties": false
}
🟢penny_cleaning_quote(hours, hourlyWage, laborBurdenPct, suppliesUsd, overheadUsd, ...)

Commercial cleaning quote by labor and target margin. Free, no signup, deterministic.

輸入結構描述

{
  "type": "object",
  "properties": {
    "hours": {
      "type": "number"
    },
    "hourlyWage": {
      "type": "number"
    },
    "laborBurdenPct": {
      "type": "number"
    },
    "suppliesUsd": {
      "type": "number"
    },
    "overheadUsd": {
      "type": "number"
    },
    "targetMarginPct": {
      "type": "number"
    }
  },
  "required": [
    "hours",
    "hourlyWage"
  ],
  "additionalProperties": false
}
🟢penny_marketplace_profit(salePrice, productCost, shippingCost, shippingCharged, platformFeePct, ...)

Ecommerce net contribution after goods, fees, ads and shipping. Free, no signup, deterministic.

輸入結構描述

{
  "type": "object",
  "properties": {
    "salePrice": {
      "type": "number"
    },
    "productCost": {
      "type": "number"
    },
    "shippingCost": {
      "type": "number"
    },
    "shippingCharged": {
      "type": "number"
    },
    "platformFeePct": {
      "type": "number"
    },
    "platformFeeFixed": {
      "type": "number"
    },
    "adCost": {
      "type": "number"
    }
  },
  "required": [
    "salePrice",
    "productCost"
  ],
  "additionalProperties": false
}
🟢penny_target_price(cost, feePct, feeFixed, targetMarginPct)

Find minimum price for target gross margin after fees. Free, no signup, deterministic.

輸入結構描述

{
  "type": "object",
  "properties": {
    "cost": {
      "type": "number"
    },
    "feePct": {
      "type": "number"
    },
    "feeFixed": {
      "type": "number"
    },
    "targetMarginPct": {
      "type": "number"
    }
  },
  "required": [
    "cost"
  ],
  "additionalProperties": false
}
🟢penny_campaign_economics(costPerClick, conversionRatePct, contributionPerOrderUsd)

Customer acquisition cost and break-even click price. Free, no signup, deterministic.

輸入結構描述

{
  "type": "object",
  "properties": {
    "costPerClick": {
      "type": "number"
    },
    "conversionRatePct": {
      "type": "number"
    },
    "contributionPerOrderUsd": {
      "type": "number"
    }
  },
  "required": [
    "costPerClick",
    "conversionRatePct",
    "contributionPerOrderUsd"
  ],
  "additionalProperties": false
}
🟢penny_subscription_ltv(pricePerMonth, monthlyChurnPct, grossMarginPct, acquisitionCostUsd)

Simple monthly churn lifetime value estimates. Free, no signup, deterministic.

輸入結構描述

{
  "type": "object",
  "properties": {
    "pricePerMonth": {
      "type": "number"
    },
    "monthlyChurnPct": {
      "type": "number"
    },
    "grossMarginPct": {
      "type": "number"
    },
    "acquisitionCostUsd": {
      "type": "number"
    }
  },
  "required": [
    "pricePerMonth",
    "monthlyChurnPct"
  ],
  "additionalProperties": false
}
🟢penny_url_clean(url, removeAllQuery)

Remove common tracking parameters from HTTP links without fetching. Free, no signup, deterministic.

輸入結構描述

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string"
    },
    "removeAllQuery": {
      "type": "boolean"
    }
  },
  "required": [
    "url"
  ],
  "additionalProperties": false
}
🟢penny_slugify(text)

Turn a short string into a lowercase ASCII URL slug. Free, no signup, deterministic.

輸入結構描述

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string"
    }
  },
  "required": [
    "text"
  ],
  "additionalProperties": false
}
🟢penny_json_inspect(text)

Parse and inspect bounded JSON input without retaining it. Free, no signup, deterministic.

輸入結構描述

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string"
    }
  },
  "required": [
    "text"
  ],
  "additionalProperties": false
}
🟢penny_html_extract(html)

Extract structured page title, meta tags, headings and JSON-LD from supplied HTML without browsing or executing scripts. Free, no signup, deterministic.

輸入結構描述

{
  "type": "object",
  "properties": {
    "html": {
      "type": "string"
    }
  },
  "required": [
    "html"
  ],
  "additionalProperties": false
}
🟢penny_csv_to_json(csv)

Transform CSV text into a bounded array of JSON records with quoted cell support. Free, no signup, deterministic.

輸入結構描述

{
  "type": "object",
  "properties": {
    "csv": {
      "type": "string"
    }
  },
  "required": [
    "csv"
  ],
  "additionalProperties": false
}
🟢penny_catalog_audit(items, targetMarginPct)

Batch-audit up to 50 product records for duplicate SKUs, missing attributes, malformed URLs and estimated net contribution per order. Useful for scheduled ecommerce catalog ingestion and agent product publishing. No external network calls. Free, no signup.

輸入結構描述

{
  "type": "object",
  "properties": {
    "items": {
      "type": "array",
      "minItems": 1,
      "maxItems": 50,
      "items": {
        "type": "object",
        "additionalProperties": false,
        "properties": {
          "sku": {
            "type": "string",
            "maxLength": 100
          },
          "name": {
            "type": "string",
            "maxLength": 200
          },
          "price": {
            "type": "number",
            "minimum": 0
          },
          "cost": {
            "type": "number",
            "minimum": 0
          },
          "shippingCost": {
            "type": "number",
            "minimum": 0
          },
          "feePct": {
            "type": "number",
            "minimum": 0,
            "maximum": 70
          },
          "url": {
            "type": "string",
            "maxLength": 1000
          }
        },
        "required": [
          "sku",
          "name"
        ]
      }
    },
    "targetMarginPct": {
      "type": "number",
      "minimum": -100,
      "maximum": 95
    }
  },
  "required": [
    "items"
  ],
  "additionalProperties": false
}
🟢penny_trend_radar(limit, commercialOnly)

Get recent US Google Trends rising-search queries and transparent heuristic purchase-intent classification to identify digital product research candidates. Public RSS, cached 10 minutes, no customer or sales data. Free, no signup.

輸入結構描述

{
  "type": "object",
  "properties": {
    "limit": {
      "type": "number",
      "description": "Maximum entries to return; integer 1–25, default 10"
    },
    "commercialOnly": {
      "type": "boolean",
      "description": "Only include potential commercial-intent terms; default false"
    }
  },
  "required": [],
  "additionalProperties": false
}
🟢penny_capability_router(task)

Resolve an agent task to existing Penny Engine capabilities only. Does not execute, purchase, research live web content, or claim to handle arbitrary tasks. Unsupported requests are labeled explicitly. Free, no signup.

輸入結構描述

{
  "type": "object",
  "properties": {
    "task": {
      "type": "string",
      "minLength": 3,
      "maxLength": 180
    }
  },
  "required": [
    "task"
  ],
  "additionalProperties": false
}
🟢penny_fulfillment_preflight(goal, input, maxPriceUsd)

FREE preflight for a catalog audit or agent-output-batch-qa work order, with $0.001 Base USDC checkout instructions. Never charges, signs, or executes the paid call.

輸入結構描述

{
  "type": "object",
  "properties": {
    "goal": {
      "type": "string",
      "enum": [
        "catalog-csv-audit",
        "agent-output-batch-qa"
      ]
    },
    "input": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "csv": {
          "type": "string",
          "minLength": 15,
          "maxLength": 9500
        },
        "targetMarginPct": {
          "type": "number",
          "minimum": 0,
          "maximum": 95
        },
        "jobs": {
          "type": "array",
          "minItems": 1,
          "maxItems": 20,
          "items": {
            "type": "object",
            "properties": {
              "id": {
                "type": "string"
              },
              "result": {},
              "expectations": {
                "type": "object"
              }
            },
            "required": [
              "id",
              "result",
              "expectations"
            ]
          }
        }
      }
    },
    "maxPriceUsd": {
      "type": "number",
      "minimum": 0.001
    }
  },
  "required": [
    "goal",
    "input"
  ],
  "additionalProperties": false
}
🟢penny_choose_service(task, maxPriceUsd, input)

Given an agent's real task, get the single best supported Penny Engine payable route, exact $0.001 quote, required input, sample, and buyer-authorized checkout instructions. Includes optional FREE CSV preflight; does not sign, pay or execute a paid call.

輸入結構描述

{
  "type": "object",
  "properties": {
    "task": {
      "type": "string",
      "minLength": 3,
      "maxLength": 180
    },
    "maxPriceUsd": {
      "type": "number",
      "minimum": 0
    },
    "input": {
      "type": "object",
      "description": "Optional catalog CSV input for free validation, or a public wallet address."
    }
  },
  "required": [
    "task"
  ],
  "additionalProperties": false
}

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