.codex-plugin/plugin.json

{
  "name": "app-6a8dbe324a8c8191b4bf7cf1bac4993b",
  "version": "1.4.2",
  "description": "Five read-only tools for gold, silver and other metals: spot prices, observed premiums, price history, Goldback rate, and currencies.",
  "author": {
    "name": "StackerScan"
  },
  "mcpServers": "./.mcp.json",
  "interface": {
    "displayName": "StackerScan",
    "shortDescription": "Live gold and silver premiums",
    "longDescription": "Five read-only tools for gold, silver and other metals: spot prices, observed premiums, price history, Goldback rate, and currencies.\n\nSpot metal prices: Current and previous-session spot prices for gold, silver, platinum, palladium, copper and nickel, in any supported currency and per troy ounce or gram.\n\nObserved premiums over spot: Rolling fine-metal-weighted median asking premiums for silver, gold, platinum, palladium, copper, nickel and Goldback, observed from marketplace listings.\n\nHistorical price series: Daily historical series for charting \u2014 one metal or the Goldback.\n\nGoldback exchange rate: The latest Goldback premium multiple over its gold content, and the exchange rate that follows from it.\n\nSupported currency catalog: The live list of codes every `currency`/`base` parameter accepts \u2014 ISO 4217 fiat plus the metal codes.\n\nNo API key, account, or registration is required. StackerScan is not a dealer and sells no bullion; its tools return price data only. Results are structured JSON mirroring the open HTTP API documented at https://www.stackerscan.com/openapi.json; errors are RFC 9457 problem documents.",
    "developerName": "StackerScan",
    "category": "Finance",
    "capabilities": [],
    "websiteURL": "https://www.stackerscan.com",
    "supportURL": "https://www.stackerscan.com/contact",
    "privacyPolicyURL": "https://www.stackerscan.com/privacy",
    "termsOfServiceURL": "https://www.stackerscan.com/terms",
    "defaultPrompt": [
      "What's the spot price of gold and silver right now in EUR?",
      "What's the typical premium for a 1 oz silver Libertad?",
      "Show me silver's price history over the last 90 days."
    ],
    "composerIcon": "./assets/icon.png",
    "logo": "./assets/icon.png"
  },
  "extensions": {
    "com.openai": {
      "review": {
        "test_cases": {
          "positive": [
            {
              "description": "Spot prices in another currency",
              "prompt": "What's the spot price of gold and silver right now in EUR?",
              "tools_triggered": "get_spot_prices",
              "expected_behavior": "Returns gold and silver spot in EUR per troy ounce, with the session's open, high, low and close and an as-of time."
            },
            {
              "description": "Premium for a named bullion product",
              "prompt": "What's the typical premium for a 1 oz silver Libertad?",
              "tools_triggered": "get_observed_premiums",
              "expected_behavior": "Searches silver premiums for Libertad and returns the median asking premium over spot and the listing count for each matching product, with the silver category medians and links to the source listings."
            },
            {
              "description": "Browse the most-listed products",
              "prompt": "What are the most-listed silver products and their premiums over spot?",
              "tools_triggered": "get_observed_premiums",
              "expected_behavior": "Browses silver premiums with no product named and returns up to 10 products ordered by listing count, each with its median premium and listing count."
            },
            {
              "description": "Price history for charting",
              "prompt": "Show me silver's price history over the last 90 days.",
              "tools_triggered": "get_price_history",
              "expected_behavior": "Returns a daily silver price series for the last 90 days in ascending date order, which ChatGPT can chart or summarize."
            },
            {
              "description": "Goldback rate and premium",
              "prompt": "What's a Goldback worth today, and how big is its premium over its gold content?",
              "tools_triggered": "get_goldback_rate",
              "expected_behavior": "Returns the rate per Goldback, its gold content, the gold spot used, and its premium multiple over that gold (about 2x), with the rate date."
            }
          ],
          "negative": [
            {
              "description": "Buying metal: StackerScan is not a dealer and sells no bullion, so no tool places an order.",
              "prompt": "Buy me 10 oz of silver."
            },
            {
              "description": "Numismatic valuation: StackerScan reports bullion prices and premiums only and has no collector-value tool, so it should not produce a numismatic value (at most the coin's melt value from spot).",
              "prompt": "What is my ungraded 1921 Morgan dollar worth to a collector?"
            },
            {
              "description": "Unsupported currency: the server rejects an unknown currency code with an RFC 9457 problem document, which should surface as a clear error rather than a made-up price.",
              "prompt": "What's the spot price of gold in XYZ?"
            }
          ]
        },
        "commerce": false,
        "commerce_description": "StackerScan is not a dealer and sells no bullion; its tools return price data only."
      },
      "publication": {
        "release_notes": "Brings the listing in line with the StackerScan MCP server 1.5.2. Numismatic (PCGS) valuation is no longer offered: get_price_history covers one metal or the Goldback. The description, starter prompts and review cases now match the server's own copy. Every tool now carries annotations.title. Same five read-only tools, no authentication."
      }
    }
  },
  "apps": "./.app.json"
}