{
  "name": "Tethered Trust",
  "description": "Compatibility intelligence for people and AI agents: verify that a part, accessory or appliance fits before buying.",
  "operator": "Chimes In LLC",
  "contact": "hello@chimes-in.com",
  "website": "https://tetheredtrust.com",
  "mcp": "https://tetheredtrust.com/mcp",
  "api": "https://tetheredtrust.com/v1",
  "auth": {
    "header": "Authorization: Bearer tt_... (optional during the free launch; raises limits)",
    "access": "free launch: the first 10,000 metered calls are free"
  },
  "payments": {
    "status": "planned",
    "protocol": "x402 (HTTP 402)",
    "asset": "USDC",
    "note": "Planned per-call prices are listed; nothing is charged during the free launch."
  },
  "legal": {
    "terms": "https://tetheredtrust.com/terms",
    "api_terms": "https://tetheredtrust.com/api-terms",
    "privacy": "https://tetheredtrust.com/privacy",
    "support": "https://tetheredtrust.com/support",
    "notice": "Informational only. Confirm compatibility and installation requirements with the manufacturer before buying or installing."
  },
  "support": {
    "email": "support@chimes-in.com",
    "phone": "+1 (904) 807-7804"
  },
  "coverage": [
    "Laptop and desktop RAM (DDR3/4/5, SODIMM/DIMM)",
    "M.2 SSDs (length, key, NVMe/SATA, PCIe generation)",
    "USB-C Power Delivery chargers",
    "Appliance replacement parts (growing)",
    "Appliance installation fit (dimensions and clearances)"
  ],
  "operations": [
    {
      "name": "how_it_works",
      "method": "GET",
      "path": "/v1/how-it-works",
      "planned_price_usd": 0,
      "summary": "What Tethered Trust is, what it covers, and how an assistant should use it before a purchase.",
      "input": {
        "type": "object",
        "properties": {}
      }
    },
    {
      "name": "resolve_product",
      "method": "GET",
      "path": "/v1/resolve?query=",
      "planned_price_usd": 0,
      "summary": "Look up a product in the Tethered Trust graph by name or model number and get its structured specs.",
      "input": {
        "type": "object",
        "required": [
          "query"
        ],
        "properties": {
          "query": {
            "type": "string",
            "description": "Product name or model number."
          }
        }
      }
    },
    {
      "name": "check_compatibility",
      "method": "POST",
      "path": "/v1/check",
      "planned_price_usd": 0.03,
      "summary": "Will this exact part work with that exact device? RAM, M.2 SSDs, USB-C chargers and appliance parts. Returns compatible / incompatible / uncertain with confidence, the rules checked, caveats and evidence.",
      "input": {
        "type": "object",
        "required": [
          "existing",
          "candidate"
        ],
        "properties": {
          "existing": {
            "type": "string",
            "description": "What the person already has, ideally with the exact model number, e.g. 'Lenovo ThinkPad T480'."
          },
          "candidate": {
            "type": "string",
            "description": "What they want to buy: a model/part number or key specs, e.g. 'Crucial CT16G4SFRA32A' or '1TB M.2 2230 NVMe'."
          },
          "detail": {
            "type": "string",
            "description": "Optional extra identifiers: machine type, revision, year, serial range."
          }
        }
      }
    },
    {
      "name": "find_parts",
      "method": "POST",
      "path": "/v1/parts",
      "planned_price_usd": 0.05,
      "summary": "Which parts fit this model? The OEM part and verified alternatives (e.g. a refrigerator's water filter), or every RAM, SSD and charger in the graph that fits a computer.",
      "input": {
        "type": "object",
        "required": [
          "model"
        ],
        "properties": {
          "model": {
            "type": "string",
            "description": "Model number of the device or appliance, e.g. 'GFE28GYNFS' or 'ThinkPad T480'."
          },
          "part_type": {
            "type": "string",
            "description": "Optional filter, e.g. 'water filter', 'memory', 'ssd', 'charger'."
          }
        }
      }
    },
    {
      "name": "check_fit",
      "method": "POST",
      "path": "/v1/fit",
      "planned_price_usd": 0.03,
      "summary": "Will this appliance physically fit this space? Compares dimensions plus typical installation clearances and required connections.",
      "input": {
        "type": "object",
        "required": [
          "opening"
        ],
        "properties": {
          "product": {
            "type": "string",
            "description": "What's being installed, e.g. '36-inch French-door refrigerator'. Used to pick typical clearances."
          },
          "category": {
            "type": "string",
            "enum": [
              "refrigerator",
              "dishwasher",
              "range",
              "washer",
              "dryer",
              "other"
            ]
          },
          "product_dimensions": {
            "type": "object",
            "description": "width, height, depth of the product (e.g. \"35.75\\\"\", \"90.8 cm\")."
          },
          "opening": {
            "type": "object",
            "description": "width, height, depth of the space it goes into."
          },
          "needs": {
            "type": "string",
            "description": "Connections the product needs, e.g. '120V, water line'."
          },
          "has": {
            "type": "string",
            "description": "Connections available at the location."
          }
        }
      }
    },
    {
      "name": "report_outcome",
      "method": "POST",
      "path": "/v1/outcome",
      "planned_price_usd": 0,
      "summary": "After a purchase, report whether it actually fit. Free; it becomes evidence for future answers.",
      "input": {
        "type": "object",
        "required": [
          "check_id",
          "outcome"
        ],
        "properties": {
          "check_id": {
            "type": "string"
          },
          "outcome": {
            "type": "string",
            "enum": [
              "fit",
              "no_fit"
            ]
          },
          "note": {
            "type": "string",
            "description": "What happened, briefly."
          }
        }
      }
    }
  ]
}