plugin.json

{
  "$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
  "name": "coindex",
  "version": "1.0.0",
  "description": "Bullion prices and coin albums",
  "author": {
    "name": "Nucleus47, Inc."
  },
  "extensions": {
    "com.openai": {
      "interface": {
        "displayName": "Coindex",
        "shortDescription": "Bullion prices and coin albums",
        "longDescription": "Coindex is a site for coin and bullion collectors. This plugin lets ChatGPT work with your Coindex account and with Coindex's public bullion data.\n\nPhoto albums (needs you to sign in with Coindex):\n- Create an album with a title and description. Every album has a share link, and anyone with the link can view it. Albums are not indexed by search engines.\n- Add photos to one of your albums from public https image URLs (jpeg, png, webp or gif, up to 10 MB each, 10 per request).\n- List the albums you made earlier, newest first, to find a code or share link again.\n- Create private album folders, list them, and move your albums between folders.\n\nBullion and market data (read-only):\n- Get current spot prices for gold, silver, platinum and palladium in USD per troy ounce.\n- See the bullion deals shown on coindex.app/deals, from dealer stores and Reddit sellers, lowest premium over melt first. You can filter by metal, source and maximum premium.\n- Search Coindex's bullion catalog by product name or weight to find a product's canonical id (for example a silver eagle or a 10 oz silver bar).\n- Get the Reddit ask reference for a product: the median premium over melt that distinct sellers asked, with the number of sellers, the window and the recent asks, or the reason a figure is withheld.\n- Calculate melt value for a catalog product or for a metal and fine troy ounces, at current spot.\n\nPrice evidence from store listings and Reddit sellers reflects asking prices. Spot quotes and calculated melt values are reference values. None of these represents a completed sale, and Coindex does not present them as sold prices. This plugin does not provide numismatic (collector) coin values, grading, or buy and sell advice.\n\nPrivacy and control: the plugin only acts on your own albums. You can disconnect it at any time in Coindex under Settings, AI agent connectors, Connected apps, which revokes its access.",
        "developerName": "Nucleus47, Inc.",
        "category": "Finance",
        "websiteURL": "https://coindex.app",
        "supportURL": "https://coindex.app/contact/",
        "privacyPolicyURL": "https://coindex.app/privacy/",
        "termsOfServiceURL": "https://coindex.app/terms/",
        "logo": "./assets/logo.png",
        "composerIcon": "./assets/logo.png",
        "defaultPrompt": [
          "What is silver spot right now?",
          "Show me the lowest-premium silver bullion deals.",
          "Make an album called \"Morgan dollars\" and add these photos."
        ]
      },
      "review": {
        "test_cases": {
          "positive": [
            {
              "description": "a collector starts an album for a new coin.",
              "prompt": "Create a Coindex album titled \"1921 Morgan dollar\" with the description \"Obverse and reverse, raw\".",
              "tools_triggered": "create_album",
              "expected_behavior": "an album with the given title, an empty photo count, and a share link `https://coindex.app/a/<code>`."
            },
            {
              "description": "add images already hosted online to that album.",
              "prompt": "Add this photo to my 1921 Morgan dollar album: https://raw.githubusercontent.com/mdn/learning-area/a08792e6797a4692fed9a3be11c032ac3602df2d/accessibility/html/dinosaur.png",
              "tools_triggered": "list_my_albums, add_photos",
              "expected_behavior": "one result with `ok: true` and an `imageUrl` on coindex.app; re-sending it reports `isDuplicate: true`."
            },
            {
              "description": "find an earlier album and its link.",
              "prompt": "List my Coindex albums and give me the share link for the newest one.",
              "tools_triggered": "list_my_albums",
              "expected_behavior": "albums newest first, each with title, link, photo count and expiry; no other user's albums."
            },
            {
              "description": "value the metal in a bar.",
              "prompt": "What is silver spot right now, and what is the melt value of ten 1 oz silver eagles?",
              "tools_triggered": "get_spot_prices, search_bullion_catalog, calculate_melt_value",
              "expected_behavior": "silver USD per troy ounce with its as-of time, the catalog id for the silver eagle, and melt equal to spot x fine ounces x 10, with the formula shown."
            },
            {
              "description": "find a low-premium deal and see what sellers ask.",
              "prompt": "Show me the three lowest-premium silver bullion deals, and what Reddit sellers typically ask over melt for a 1 oz silver eagle.",
              "tools_triggered": "get_deals, search_bullion_catalog, get_bullion_ask_reference",
              "expected_behavior": "up to three deals with price, melt, premium and link, then a median asking premium with seller count; both described as asking prices, never sales."
            }
          ],
          "negative": [
            {
              "description": "Numismatic value",
              "prompt": "What is a 1893-S Morgan dollar in MS-64 worth at auction?",
              "expected_behavior": "No Coindex tool is triggered for numismatic auction prices; Coindex exposes none. ChatGPT may answer using other sources, but must not attribute a collector price to Coindex."
            },
            {
              "description": "Selling or sold prices",
              "prompt": "What did 1 oz silver eagles actually sell for this week? Give me the sold price.",
              "expected_behavior": "Coindex has no completed-sale data: store and Reddit prices are asks, while spot quotes and melt values are references. No Coindex tool returns or labels an asking price as a completed sale. ChatGPT may use other sources but must distinguish them from Coindex data."
            },
            {
              "description": "Out-of-scope request",
              "prompt": "Delete all my Coindex albums and email my share links to my friends.",
              "expected_behavior": "Coindex exposes no album-delete or email-send tool. No Coindex tool changes or removes data for this request, and ChatGPT must not claim Coindex deleted albums or sent email. It may clarify limitations or use read-only tools to identify requested share links."
            }
          ]
        },
        "demo_recording_url": "https://coindex.app/review/coindex-chatgpt-walkthrough-v2.mp4"
      },
      "publication": {
        "release_notes": "1.0.0 - First release. Create albums and add photos to them from image URLs, list and organize your albums into private folders, and read current\ngold, silver, platinum and palladium spot prices, bullion deals with premium over melt, the bullion catalog, Reddit\nasking-price references and melt value calculations. Listing and ask-reference prices are asking prices; spot quotes and melt calculations do not represent completed sales."
      },
      "apps": "./.app.json"
    }
  }
}