{
 "name": "Digital Gemology cut library",
 "description": "Finds gem cuts and their 3D models (STEP, 3DM, STL, OBJ, FBX, GLB) and GemCad faceting diagrams, with measured brilliance, fire and scintillation in seven gemstones, prices and checkout links. A deterministic catalog agent over the site's own data, not a language model: send plain text, or a data part {\"skill\": \"<skill id>\", \"arguments\": {...}} with the arguments of the matching MCP tool. Read-only, free, no sign-in; purchases are completed by a person at the Lemon Squeezy checkout.",
 "supportedInterfaces": [
  {
   "url": "https://digitalgemology.com/a2a",
   "protocolBinding": "JSONRPC",
   "protocolVersion": "1.0"
  },
  {
   "url": "https://digitalgemology.com/a2a",
   "protocolBinding": "JSONRPC",
   "protocolVersion": "0.3"
  }
 ],
 "provider": {
  "organization": "Digital Gemology",
  "url": "https://digitalgemology.com"
 },
 "version": "1.0.0",
 "documentationUrl": "https://digitalgemology.com/about/agents#a2a-h",
 "capabilities": {
  "streaming": false,
  "pushNotifications": false,
  "extendedAgentCard": false
 },
 "defaultInputModes": [
  "text/plain",
  "application/json"
 ],
 "defaultOutputModes": [
  "text/markdown",
  "application/json"
 ],
 "skills": [
  {
   "id": "search_cuts",
   "name": "Search the cut library",
   "description": "Search Digital Gemology's gem cuts and Platonic solids by name, style, shape or use (for example 'square step cut', 'round brilliant for moissanite', 'historic cushion', 'pear'). Returns each match with its page, facets, size, price and checkout links. Give a gemstone to add the cut's brilliance, fire and scintillation in that stone and to sort by them.",
   "tags": [
    "gemstones",
    "gem cuts",
    "3D models",
    "faceting diagrams"
   ],
   "examples": [
    "Find a square step cut",
    "Round brilliant cuts for moissanite",
    "Historic cushion cuts as 3D models"
   ],
   "inputModes": [
    "text/plain",
    "application/json"
   ],
   "outputModes": [
    "text/markdown",
    "application/json"
   ]
  },
  {
   "id": "get_cut",
   "name": "Get one cut",
   "description": "Everything about one cut: what it is, measured specifications (facets, angles, depth, size, index gear), brilliance, fire and scintillation in all seven gemstones against the T73, the products with prices and checkout links, its questions and answers, and its page.",
   "tags": [
    "gemstones",
    "gem cuts",
    "3D models",
    "faceting diagrams"
   ],
   "examples": [
    "Tell me about the Asscher cut",
    "Price and files of DG-Anteros"
   ],
   "inputModes": [
    "text/plain",
    "application/json"
   ],
   "outputModes": [
    "text/markdown",
    "application/json"
   ]
  },
  {
   "id": "best_cuts_for_gemstone",
   "name": "Best cuts for a gemstone",
   "description": "The top ten brilliants and the top ten jewelry cuts in one gemstone, ranked by brilliance, fire and scintillation added together, with the stone's optical constants.",
   "tags": [
    "gemstones",
    "gem cuts",
    "3D models",
    "faceting diagrams"
   ],
   "examples": [
    "Best cuts for sapphire",
    "Top jewelry cuts in emerald"
   ],
   "inputModes": [
    "text/plain",
    "application/json"
   ],
   "outputModes": [
    "text/markdown",
    "application/json"
   ]
  },
  {
   "id": "cut_in_gemstone",
   "name": "One cut in one gemstone",
   "description": "How one cut performs in one gemstone: its headline, eight measured scores against the T73 round brilliant in the same stone, and its pros and cons. For questions like 'is an oval a good cut for sapphire?'.",
   "tags": [
    "gemstones",
    "gem cuts",
    "3D models",
    "faceting diagrams"
   ],
   "examples": [
    "Is an oval a good cut for ruby?",
    "Asscher cut in sapphire"
   ],
   "inputModes": [
    "text/plain",
    "application/json"
   ],
   "outputModes": [
    "text/markdown",
    "application/json"
   ]
  },
  {
   "id": "list_gemstones",
   "name": "List the gemstones",
   "description": "The seven gemstones every cut is measured in, with refractive index, critical angle, dispersion, hardness and specific gravity, and the three best cuts of each kind.",
   "tags": [
    "gemstones",
    "gem cuts",
    "3D models",
    "faceting diagrams"
   ],
   "examples": [
    "Which gemstones do you measure?",
    "Critical angle of amethyst"
   ],
   "inputModes": [
    "text/plain",
    "application/json"
   ],
   "outputModes": [
    "text/markdown",
    "application/json"
   ]
  },
  {
   "id": "get_cut_scores",
   "name": "Cut Performance Index scores",
   "description": "Scores from the Digital Gemology Cut Performance Index for every cut we sell: overall, brilliance, fire, scintillation, tilt, symmetry, spread, shape-norm and leakage, ray traced separately in diamond, moissanite, cubic zirconia, ruby, sapphire, emerald and amethyst, with each cut's place in its material. Filter by cut, category or material; with no filter, every row. Figures are unrounded. Never compare or rank scores across materials. Ruby and sapphire share one refractive index, so the same figures. Cuts not yet scored come with the reason.",
   "tags": [
    "gemstones",
    "gem cuts",
    "3D models",
    "faceting diagrams"
   ],
   "examples": [
    "{\"skill\": \"get_cut_scores\", \"arguments\": {\"material\": \"sapphire\"}}",
    "{\"skill\": \"get_cut_scores\", \"arguments\": {\"cut\": \"oval\"}}"
   ],
   "inputModes": [
    "text/plain",
    "application/json"
   ],
   "outputModes": [
    "text/markdown",
    "application/json"
   ]
  },
  {
   "id": "compare_cuts",
   "name": "Compare two cuts",
   "description": "Two cuts side by side in one gemstone: overall, brilliance, fire, scintillation, tilt, face-up spread and leakage from the Cut Performance Index, each cut's place in that stone, facets and size, and the products with prices and checkout links. For questions like 'oval or pear for my sapphire?'.",
   "tags": [
    "gemstones",
    "gem cuts",
    "3D models",
    "faceting diagrams"
   ],
   "examples": [
    "{\"skill\": \"compare_cuts\", \"arguments\": {\"cut_a\": \"oval\", \"cut_b\": \"pear\", \"gemstone\": \"sapphire\"}}"
   ],
   "inputModes": [
    "text/plain",
    "application/json"
   ],
   "outputModes": [
    "text/markdown",
    "application/json"
   ]
  },
  {
   "id": "recommend_cut",
   "name": "Recommend a cut",
   "description": "The best cuts in one gemstone for what matters to the buyer: overall light performance, brilliance, fire, scintillation (sparkle), spread (looks bigger for its weight), tilt (stays bright when tilted) or leakage (least light lost). Filter by family or outline. Returns a ranked short list with each cut's page and checkout links.",
   "tags": [
    "gemstones",
    "gem cuts",
    "3D models",
    "faceting diagrams"
   ],
   "examples": [
    "{\"skill\": \"recommend_cut\", \"arguments\": {\"gemstone\": \"moissanite\", \"priority\": \"fire\"}}"
   ],
   "inputModes": [
    "text/plain",
    "application/json"
   ],
   "outputModes": [
    "text/markdown",
    "application/json"
   ]
  }
 ],
 "iconUrl": "https://digitalgemology.com/apple-touch-icon.png"
}