{
  "agent_meta": {
    "type": "agent_product",
    "schema": "mcc_agent",
    "schema_version": "1.1",
    "generated_at": "2026-11-07",
    "source_of_truth": "MCC Commerce Engine"
  },

  "request_context": {
    "language": {
      "id_lang": 2,
      "iso_code": "en",
      "url_prefix": "\/en\/"
    },
    "delivery_country": {
      "id_country": 0,
      "iso_code": false
    },
    "currency": {
      "id_currency": 1,
      "iso_code": "EUR",
      "name": "Euro",
      "symbol": "\u20ac"
    },
    "complete": true
  },

  "context_switching": {
    "available": true,
    "mode": "on_demand_resolver",
    "stateless": true,
    "resolver": "links.agent.contexts",
    "fetch_when": "requested_context_differs",
    "dimensions": [
      "language",
      "delivery_country",
      "currency"
    ],
    "unspecified_dimensions": "preserve_request_context",
    "selection": {
      "match": "exact",
      "source": "available_contexts",
      "result": "available_contexts[].target_url"
    },
    "target": {
      "resource": "product",
      "id_product": 83
    },
    "full_context_in_target_url": true,
    "requires_session_persistence": false,
    "manual_url_construction_allowed": false,
    "instruction": "When a requested language, delivery country or currency differs from request_context, fetch links.agent.contexts. Preserve dimensions not explicitly changed by the user, select the exact matching entry and follow target_url unchanged."
  },

  "platform": {
    "name": "MCC Agentic Commerce",
    "version": "1.0",
    "commerce_engine": "MCC Commerce Engine",
    "agent_interface": "MCC Agentic API"
  },

  "instructions": {
    "purpose": "This endpoint provides the complete machine-readable representation of one product in the active language, delivery-country and currency context.",
    "rules": [
      "All prices, taxes, availability and actions in data.product apply only to request_context.",
      "When variants exist, select the matching entry from data.product.variant_offers and use its exact price, availability and action URL.",
      "Do not infer a variant price from the product-level price or from another variant.",
      "Use the exact action.url supplied by the selected offer. Do not construct add-to-cart URLs manually.",
      "When language, delivery country or currency must change, fetch links.agent.contexts and follow the exact matching target_url unchanged.",
      "Prices, taxes, inventory and availability are calculated by the shop.",
      "Do not invent unavailable product, variant, price, stock, shipping or checkout information."
    ]
  },

  "capabilities": {
    "root": true,
    "sitemap": true,
    "search": true,
    "product": true,
    "contexts": true,
    "category": true,
    "cart": true,
    "cms_page": false,
    "checkout": false
  },

  "links": {
    "self": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=83&setCountry=0&setCurrency=1",
    "agent": {
      "root": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/root?setCountry=0&setCurrency=1",
      "sitemap": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/sitemap?setCountry=0&setCurrency=1",
      "search": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/search?setCountry=0&setCurrency=1",
      "cart": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/cart?setCountry=0&setCurrency=1",
      "product": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=83&setCountry=0&setCurrency=1",
      "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=83&setCountry=0&setCurrency=1"
    },
    "human": {
      "home": "https:\/\/musiccraft-instruments.com\/",
      "sitemap": "https:\/\/musiccraft-instruments.com\/en\/sitemap",
      "search": "https:\/\/musiccraft-instruments.com\/en\/search",
      "product": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22102-norbert-knappe-83.html",
      "cart": "https:\/\/musiccraft-instruments.com\/en\/order",
      "contact": "https:\/\/musiccraft-instruments.com\/en\/contact-us"
    }
  },

  "commerce_model": {
    "pricing": "server_calculated",
    "tax": "server_calculated",
    "shipping": "server_calculated",
    "inventory": "live",
    "currencies": "context_based",
    "languages": "url_based"
  },

  "data": {
    "product": {
      "@context": "https://schema.org",
      "@type": "Product",
      "@id": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22102-norbert-knappe-83.html#product",
      "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22102-norbert-knappe-83.html",
      "urls": {
        "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=83&setCountry=0&setCurrency=1",
        "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=83&setCountry=0&setCurrency=1",
        "human": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22102-norbert-knappe-83.html"
      },

      "id_product": 83,
      "name": "Viola 22102 \u2013 Depth you don\u2019t just hear",
      "description": "Handcrafted viola by Norbert Knappe with a warm, dark tonal character and remarkable musical depth.",
      "full_description": "The viola was never the loud instrument.\u00a0 And that\u2019s exactly why it often touches people more deeply.   The Viola 22102 by Norbert Knappe lives from this very kind of quiet strength.   Its sound doesn\u2019t force itself into the room. It slowly grows into it. Warm, dark and full \u2014 carrying the kind of depth you don\u2019t just hear, but physically feel. The very first notes already reveal the craftsmanship behind the instrument. The response feels direct and controlled, while the tone remains open and musical.  Never sterile. Never overpolished.  Just honest.   A great viola doesn\u2019t sound perfect. It sounds human.   The traditional construction and carefully selected tonewoods create beautiful dynamics and a projecting tone that works equally well in ensembles and solo performance. Soft passages remain warm and sensitive. Strong bow strokes develop power and character without ever becoming harsh. That\u2019s exactly why handcrafted instruments feel different.  They react to the player. To posture. To emotion.  Perfect for ambitious students, advanced musicians and anyone searching not just for an instrument, but for a true musical voice. Classical music, chamber ensembles, film scores or modern arrangements \u2014 the Viola 22102 stays flexible, expressive and alive.   Sounds better when you make it yourself.   Handcrafted by Norbert Knappe. For people who don\u2019t just want to play music. But truly feel it.",
      "additional_text": "Handcrafted viola by Norbert Knappe \n Warm, dark and resonant tonal character \n Responsive feel with controlled dynamics \n Traditional construction with premium tonewoods \n Hand-applied varnish \n Suitable for ensemble and solo performance \n Perfect for classical, chamber music and modern arrangements \n Designed for ambitious students and advanced players \n Traditional craftsmanship \n Made in Germany",

      "sku": "210\/22102",
      "mpn": "210\/22102",
      "ean13": "",
      "upc": "",

      "brand": {
        "@type": "Brand",
        "name": "Norbert Knappe Master Violin Maker",
        "url": "https:\/\/musiccraft-instruments.com\/en\/norbert-knappe-master-violin-maker_14"      },

      "manufacturer": {
        "@type": "Organization",
        "id_manufacturer": 14,
        "name": "Norbert Knappe Master Violin Maker",
        "url": "https:\/\/musiccraft-instruments.com\/en\/norbert-knappe-master-violin-maker_14"      },

      "supplier": {
        "@type": "Organization",
        "id_supplier": 1,
        "name": "Migma e.G."
      },

      "main_category": {
        "id_category": 22,
        "name": "Violas",
        "link_rewrite": "violas",
        "urls": {
          "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=22&setCountry=0&setCurrency=1",
          "human": "https:\/\/musiccraft-instruments.com\/en\/violas-22"
        }
      },

      "categories": [
                            {
            "id_category": 4,
            "name": "Instruments",
            "link_rewrite": "instruments",
            "urls": {
              "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=4&setCountry=0&setCurrency=1",
              "human": "https:\/\/musiccraft-instruments.com\/en\/instruments-4"
            }
          },                    {
            "id_category": 6,
            "name": "Equipment & Essentials",
            "link_rewrite": "equipment-essentials",
            "urls": {
              "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=6&setCountry=0&setCurrency=1",
              "human": "https:\/\/musiccraft-instruments.com\/en\/equipment-essentials-6"
            }
          },                    {
            "id_category": 7,
            "name": "Restoration",
            "link_rewrite": "restoration",
            "urls": {
              "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=7&setCountry=0&setCurrency=1",
              "human": "https:\/\/musiccraft-instruments.com\/en\/restoration-7"
            }
          },                    {
            "id_category": 5,
            "name": "Highlight",
            "link_rewrite": "highlight",
            "urls": {
              "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=5&setCountry=0&setCurrency=1",
              "human": "https:\/\/musiccraft-instruments.com\/en\/highlight-5"
            }
          }                        ],

      "features": [
                            {
            "id_feature": 1,
            "id_feature_value": 3,
            "name": "Product declaration",
            "value": "Single item"
          },                    {
            "id_feature": 15,
            "id_feature_value": 130,
            "name": "Taxation",
            "value": "Standard Rate"
          },                    {
            "id_feature": 9,
            "id_feature_value": 149,
            "name": "Instrument",
            "value": "Viola"
          },                    {
            "id_feature": 22,
            "id_feature_value": 171,
            "name": "Intended Use",
            "value": "Beginner"
          },                    {
            "id_feature": 22,
            "id_feature_value": 173,
            "name": "Intended Use",
            "value": "Stage"
          },                    {
            "id_feature": 22,
            "id_feature_value": 172,
            "name": "Intended Use",
            "value": "Intermediate"
          },                    {
            "id_feature": 2,
            "id_feature_value": 502,
            "name": "Badges",
            "value": "Different variants"
          }                        ],

      "agent_faqs": [
              ],

      "images": [
                            {
            "id_image": 2126,
            "cover": true,
            "position": 1,
            "legend": "Viola 22102 \u2013 Depth you don\u2019t just hear",
            "url": "https:\/\/cdn1.musiccraft-instruments.com\/2126-large_default\/viola-22102-norbert-knappe.webp"
          },                    {
            "id_image": 2130,
            "cover": false,
            "position": 2,
            "legend": "Viola 22102 \u2013 Depth you don\u2019t just hear",
            "url": "https:\/\/cdn1.musiccraft-instruments.com\/2130-large_default\/viola-22102-norbert-knappe.webp"
          },                    {
            "id_image": 2129,
            "cover": false,
            "position": 3,
            "legend": "Viola 22102 \u2013 Depth you don\u2019t just hear",
            "url": "https:\/\/cdn2.musiccraft-instruments.com\/2129-large_default\/viola-22102-norbert-knappe.webp"
          },                    {
            "id_image": 2128,
            "cover": false,
            "position": 4,
            "legend": "Viola 22102 \u2013 Depth you don\u2019t just hear",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2128-large_default\/viola-22102-norbert-knappe.webp"
          },                    {
            "id_image": 2127,
            "cover": false,
            "position": 5,
            "legend": "Viola 22102 \u2013 Depth you don\u2019t just hear",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2127-large_default\/viola-22102-norbert-knappe.webp"
          }                        ],

            "shipping_weight": {
        "@type": "QuantitativeValue",
        "value": 1.5,
        "unitCode": "KGM",
        "note": "Shipping weight, not product content."
      },
      
      
      "variant_model": {
        "has_variants": true,
        "variant_count": 7,
        "default_id_product_attribute": 154
      },

      "offers": {
        "@type": "Offer",
        "offer_scope": "default_variant",
        "id_product": 83,
        "id_product_attribute": 154,
        "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22102-norbert-knappe-83.html",
        "price": 4200.00,
        "priceCurrency": "EUR",
        "availability": "https://schema.org/InStock",
        "itemCondition": "https://schema.org/NewCondition",
        "seller": {
          "@type": "Organization",
          "name": "musiccraft - instruments",
          "url": "https:\/\/musiccraft-instruments.com\/",
          "telephone": "+49 (0) 34 20 63 14 888"        },
        "priceSpecification": {
          "@type": "PriceSpecification",
          "price": 4200.00,
          "priceCurrency": "EUR",
          "valueAddedTaxIncluded": true        }
              },

      "variant_offers": [
                            {
            "@type": "Offer",
            "id_product": 83,
            "id_product_attribute": 154,
            "is_default": true,
            "sku": "210\/22102-390",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22102-norbert-knappe-83.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/viola-22102-norbert-knappe.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 10,
                  "group_name": "Size",
                  "value": "39 cm"
                }                                          ],
            "attribute_summary": "Size: 39 cm",

            "price": {
              "delivery_country": false,
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 3529.41,
              "tax_included": 4200.00,
              "without_reduction_tax_excluded": 3529.41,
              "without_reduction_tax_included": 4200.00,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 2,
            "minimal_quantity": 1,
            "action": {
              "type": "add_to_cart",
              "method": "GET",
              "enabled": true,
              "quantity": 1,
              "url": "https:\/\/musiccraft-instruments.com\/en\/shopping-cart?add=1&id_product=83&id_product_attribute=154&qty=1&setCountry=0&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 83,
            "id_product_attribute": 155,
            "is_default": false,
            "sku": "210\/22102-395",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22102-norbert-knappe-83.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/viola-22102-norbert-knappe.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 10,
                  "group_name": "Size",
                  "value": "39,50 cm"
                }                                          ],
            "attribute_summary": "Size: 39,50 cm",

            "price": {
              "delivery_country": false,
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 3529.41,
              "tax_included": 4200.00,
              "without_reduction_tax_excluded": 3529.41,
              "without_reduction_tax_included": 4200.00,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 2,
            "minimal_quantity": 1,
            "action": {
              "type": "add_to_cart",
              "method": "GET",
              "enabled": true,
              "quantity": 1,
              "url": "https:\/\/musiccraft-instruments.com\/en\/shopping-cart?add=1&id_product=83&id_product_attribute=155&qty=1&setCountry=0&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 83,
            "id_product_attribute": 156,
            "is_default": false,
            "sku": "210\/22102-400",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22102-norbert-knappe-83.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/viola-22102-norbert-knappe.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 10,
                  "group_name": "Size",
                  "value": "40,00 cm"
                }                                          ],
            "attribute_summary": "Size: 40,00 cm",

            "price": {
              "delivery_country": false,
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 3529.41,
              "tax_included": 4200.00,
              "without_reduction_tax_excluded": 3529.41,
              "without_reduction_tax_included": 4200.00,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 2,
            "minimal_quantity": 1,
            "action": {
              "type": "add_to_cart",
              "method": "GET",
              "enabled": true,
              "quantity": 1,
              "url": "https:\/\/musiccraft-instruments.com\/en\/shopping-cart?add=1&id_product=83&id_product_attribute=156&qty=1&setCountry=0&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 83,
            "id_product_attribute": 157,
            "is_default": false,
            "sku": "210\/22102-405",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22102-norbert-knappe-83.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/viola-22102-norbert-knappe.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 10,
                  "group_name": "Size",
                  "value": "40,50 cm"
                }                                          ],
            "attribute_summary": "Size: 40,50 cm",

            "price": {
              "delivery_country": false,
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 3529.41,
              "tax_included": 4200.00,
              "without_reduction_tax_excluded": 3529.41,
              "without_reduction_tax_included": 4200.00,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 2,
            "minimal_quantity": 1,
            "action": {
              "type": "add_to_cart",
              "method": "GET",
              "enabled": true,
              "quantity": 1,
              "url": "https:\/\/musiccraft-instruments.com\/en\/shopping-cart?add=1&id_product=83&id_product_attribute=157&qty=1&setCountry=0&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 83,
            "id_product_attribute": 158,
            "is_default": false,
            "sku": "210\/22102-410",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22102-norbert-knappe-83.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/viola-22102-norbert-knappe.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 10,
                  "group_name": "Size",
                  "value": "41,00 cm"
                }                                          ],
            "attribute_summary": "Size: 41,00 cm",

            "price": {
              "delivery_country": false,
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 3529.41,
              "tax_included": 4200.00,
              "without_reduction_tax_excluded": 3529.41,
              "without_reduction_tax_included": 4200.00,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 2,
            "minimal_quantity": 1,
            "action": {
              "type": "add_to_cart",
              "method": "GET",
              "enabled": true,
              "quantity": 1,
              "url": "https:\/\/musiccraft-instruments.com\/en\/shopping-cart?add=1&id_product=83&id_product_attribute=158&qty=1&setCountry=0&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 83,
            "id_product_attribute": 159,
            "is_default": false,
            "sku": "210\/22102-415",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22102-norbert-knappe-83.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/viola-22102-norbert-knappe.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 10,
                  "group_name": "Size",
                  "value": "41,50 cm"
                }                                          ],
            "attribute_summary": "Size: 41,50 cm",

            "price": {
              "delivery_country": false,
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 3529.41,
              "tax_included": 4200.00,
              "without_reduction_tax_excluded": 3529.41,
              "without_reduction_tax_included": 4200.00,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 2,
            "minimal_quantity": 1,
            "action": {
              "type": "add_to_cart",
              "method": "GET",
              "enabled": true,
              "quantity": 1,
              "url": "https:\/\/musiccraft-instruments.com\/en\/shopping-cart?add=1&id_product=83&id_product_attribute=159&qty=1&setCountry=0&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 83,
            "id_product_attribute": 160,
            "is_default": false,
            "sku": "210\/22102-420",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22102-norbert-knappe-83.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/viola-22102-norbert-knappe.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 10,
                  "group_name": "Size",
                  "value": "42,00 cm"
                }                                          ],
            "attribute_summary": "Size: 42,00 cm",

            "price": {
              "delivery_country": false,
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 3529.41,
              "tax_included": 4200.00,
              "without_reduction_tax_excluded": 3529.41,
              "without_reduction_tax_included": 4200.00,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 2,
            "minimal_quantity": 1,
            "action": {
              "type": "add_to_cart",
              "method": "GET",
              "enabled": true,
              "quantity": 1,
              "url": "https:\/\/musiccraft-instruments.com\/en\/shopping-cart?add=1&id_product=83&id_product_attribute=160&qty=1&setCountry=0&setCurrency=1"
            }
          }                        ],

      "pricing": {
        "scope": "default_variant",
        "default_id_product_attribute": 154,
        "delivery_country": false,
        "currency": "EUR",
        "currency_symbol": "\u20ac",
        "tax_rate": 19,
        "use_taxes": true,
        "show_taxes": true,
        "price_tax_included": 4200.00,
        "price_tax_excluded": 3529.41,
        "price_without_reduction": 3529.41,
        "reduction_percent": 0,
        "reduction_price": 0      },

      "availability": {
        "status": "https://schema.org/InStock",
        "orderable": true,
        "available_for_order": true,
        "show_price": true,
        "quantity": 14,
        "minimal_quantity": 1,
        "variant_stock_available": true,
        "allow_buy_when_out_of_stock": false,
        "stock_management": false,
        "is_virtual": false      }
    },

    "actions": {
      "add_to_cart": {
        "type": "cart_add",
        "method": "GET",
        "requires_context": true,
        "required_context_parameters": [
          "setCountry",
          "setCurrency"
        ],
        "instruction": "Use the exact action.url from data.product.offers for a simple product or from the selected data.product.variant_offers entry. Respect action.enabled and action.quantity."
      }
    }
  }
}