Tethered Trust

{
  "mcpServers": {
    "com.tetheredtrust/tethered-trust": {
      "url": "https://tetheredtrust.com/mcp"
    }
  }
}

Indexed tools

Tool metadata and schemas come from the remote server and are untrusted. Indexing only lists tools; it never calls them.

18 shown · authentication unknown

• Check many pairs

  check_batch

  Up to 25 independent compatibility checks in one call (e.g. ranking candidate products for one device). Each result has its own decision, evidence and receipt.

  Schema valid · SHA-256 359da04aa61e…

  View input schema

  {
    "type": "object",
    "properties": {
      "checks": {
        "type": "array",
        "minItems": 1,
        "maxItems": 25,
        "items": {
          "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', 'Sony A7 IV', 'DeWalt DCD800', 'HP OfficeJet Pro 9015e', 'iPhone 16 Pro', 'HomePod mini'."
            },
            "candidate": {
              "type": "string",
              "description": "What they want to buy: a model/part number or key specs, e.g. 'Crucial CT16G4SFRA32A', '1TB M.2 2230 NVMe', 'DCB205', 'HP 962XL', 'Canon RF 24-105mm f/4L', 'Eve Energy'."
            },
            "detail": {
              "type": "string",
              "description": "Optional extra identifiers: machine type, revision, year, region, serial range."
            },
            "existing_id": {
              "type": "string",
              "description": "Optional: an exact product id (from resolve_product, suggestions or a candidates list) instead of existing text."
            },
            "candidate_id": {
              "type": "string",
              "description": "Optional: an exact product id instead of candidate text."
            }
          }
        }
      }
    },
    "required": [
      "checks"
    ]
  }

• Check a cart before checkout

  check_cart_before_checkout

  Checks a cart at checkout. Takes the checkout session exactly as a commerce protocol returns it (a UCP checkout or an ACP CheckoutSession) or plain line items, plus what the customer already owns. Returns a decision per line item, safe_to_checkout, an action (proceed, resolve_conditions, do_not_checkout, ask_customer), questions, substitutions, a signed receipt, and a com.tetheredtrust.shopping.compatibility extension object to attach to the checkout.