{
  "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": 1,
      "iso_code": "DE"
    },
    "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": 104
    },
    "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=104&setCountry=1&setCurrency=1",
    "agent": {
      "root": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/root?setCountry=1&setCurrency=1",
      "sitemap": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/sitemap?setCountry=1&setCurrency=1",
      "search": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/search?setCountry=1&setCurrency=1",
      "cart": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/cart?setCountry=1&setCurrency=1",
      "product": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=104&setCountry=1&setCurrency=1",
      "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=104&setCountry=1&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\/wittner-center-mounted-violin-chinrest-104.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\/wittner-center-mounted-violin-chinrest-104.html#product",
      "url": "https:\/\/musiccraft-instruments.com\/en\/p\/wittner-center-mounted-violin-chinrest-104.html",
      "urls": {
        "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=104&setCountry=1&setCurrency=1",
        "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=104&setCountry=1&setCurrency=1",
        "human": "https:\/\/musiccraft-instruments.com\/en\/p\/wittner-center-mounted-violin-chinrest-104.html"
      },

      "id_product": 104,
      "name": "Wittner Center-Mounted Violin Chinrest \u2013 Balance You Can Feel",
      "description": "The center-mounted violin chinrest by Wittner offers balanced positioning, modern materials and exceptional comfort for long playing sessions.",
      "full_description": "Good posture does not come from thinking about it. It comes from an instrument that simply feels right.  The center-mounted violin chinrest by Wittner is designed exactly for that feeling. Its centered position creates balanced alignment between player and instrument, allowing for a more natural posture and greater freedom of movement.  The lightweight construction and skin-friendly materials provide lasting comfort \u2014 whether during lessons, rehearsals or performances. True to Wittner philosophy, the focus stays on uninterrupted playing, not on the accessory itself.   Less adjusting. More music.  \n \n Center-mounted design for violin \n Balanced and natural playing position \n Extremely lightweight construction \n Skin-friendly materials \n Comfortable support during long sessions \n Precision quality by Wittner",
      "additional_text": "When technology disappears, more space is left for music.",

      "sku": "819\/600",
      "mpn": "819\/600",
      "ean13": "",
      "upc": "",

      "brand": {
        "@type": "Brand",
        "name": "Wittner \u2013 Division of GEWA music GmbH",
        "url": "https:\/\/musiccraft-instruments.com\/en\/wittner-division-of-gewa-music-gmbh_19"      },

      "manufacturer": {
        "@type": "Organization",
        "id_manufacturer": 19,
        "name": "Wittner \u2013 Division of GEWA music GmbH",
        "url": "https:\/\/musiccraft-instruments.com\/en\/wittner-division-of-gewa-music-gmbh_19"      },

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

      "main_category": {
        "id_category": 76,
        "name": "Chin rest",
        "link_rewrite": "chin-rest",
        "urls": {
          "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=76&setCountry=1&setCurrency=1",
          "human": "https:\/\/musiccraft-instruments.com\/en\/chin-rest-76"
        }
      },

      "categories": [
                            {
            "id_category": 4,
            "name": "Instruments",
            "link_rewrite": "instruments",
            "urls": {
              "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=4&setCountry=1&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=1&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=1&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=1&setCurrency=1",
              "human": "https:\/\/musiccraft-instruments.com\/en\/highlight-5"
            }
          }                        ],

      "features": [
                            {
            "id_feature": 1,
            "id_feature_value": 1,
            "name": "Product declaration",
            "value": "Utensils"
          },                    {
            "id_feature": 1,
            "id_feature_value": 150,
            "name": "Product declaration",
            "value": "Spare parts"
          },                    {
            "id_feature": 15,
            "id_feature_value": 130,
            "name": "Taxation",
            "value": "Standard Rate"
          },                    {
            "id_feature": 9,
            "id_feature_value": 148,
            "name": "Instrument",
            "value": "Violin"
          },                    {
            "id_feature": 28,
            "id_feature_value": 327,
            "name": "Components",
            "value": "Chin rest"
          },                    {
            "id_feature": 29,
            "id_feature_value": 342,
            "name": "Size for",
            "value": "1\/4"
          },                    {
            "id_feature": 29,
            "id_feature_value": 344,
            "name": "Size for",
            "value": "1\/16"
          },                    {
            "id_feature": 29,
            "id_feature_value": 347,
            "name": "Size for",
            "value": "1\/8"
          },                    {
            "id_feature": 29,
            "id_feature_value": 341,
            "name": "Size for",
            "value": "4\/4"
          },                    {
            "id_feature": 29,
            "id_feature_value": 343,
            "name": "Size for",
            "value": "3\/4"
          },                    {
            "id_feature": 29,
            "id_feature_value": 345,
            "name": "Size for",
            "value": "4\/4 to 1\/16"
          },                    {
            "id_feature": 29,
            "id_feature_value": 348,
            "name": "Size for",
            "value": "1\/2"
          },                    {
            "id_feature": 2,
            "id_feature_value": 502,
            "name": "Badges",
            "value": "Different variants"
          }                        ],

      "agent_faqs": [
              ],

      "images": [
                            {
            "id_image": 2244,
            "cover": true,
            "position": 1,
            "legend": "Wittner Center-Mounted Violin Chinrest \u2013 Balance You Can Feel",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2244-large_default\/wittner-center-mounted-violin-chinrest.webp"
          },                    {
            "id_image": 2245,
            "cover": false,
            "position": 2,
            "legend": "Wittner Center-Mounted Violin Chinrest \u2013 Balance You Can Feel",
            "url": "https:\/\/cdn2.musiccraft-instruments.com\/2245-large_default\/wittner-center-mounted-violin-chinrest.webp"
          }                        ],

            "shipping_weight": {
        "@type": "QuantitativeValue",
        "value": 0.2,
        "unitCode": "KGM",
        "note": "Shipping weight, not product content."
      },
      
      
      "variant_model": {
        "has_variants": true,
        "variant_count": 3,
        "default_id_product_attribute": 297
      },

      "offers": {
        "@type": "Offer",
        "offer_scope": "default_variant",
        "id_product": 104,
        "id_product_attribute": 297,
        "url": "https:\/\/musiccraft-instruments.com\/en\/p\/wittner-center-mounted-violin-chinrest-104.html",
        "price": 34.90,
        "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": 34.90,
          "priceCurrency": "EUR",
          "valueAddedTaxIncluded": true        }
              },

      "variant_offers": [
                            {
            "@type": "Offer",
            "id_product": 104,
            "id_product_attribute": 294,
            "is_default": false,
            "sku": "819\/600",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/wittner-center-mounted-violin-chinrest-104.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/wittner-center-mounted-violin-chinrest.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 10,
                  "group_name": "Size",
                  "value": "4\/4 Size"
                }                                          ],
            "attribute_summary": "Size: 4\/4 Size",

            "price": {
              "delivery_country": "DE",
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 29.33,
              "tax_included": 34.90,
              "without_reduction_tax_excluded": 29.33,
              "without_reduction_tax_included": 34.90,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 5,
            "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=104&id_product_attribute=294&qty=1&setCountry=1&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 104,
            "id_product_attribute": 297,
            "is_default": true,
            "sku": "819\/601",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/wittner-center-mounted-violin-chinrest-104.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/wittner-center-mounted-violin-chinrest.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 10,
                  "group_name": "Size",
                  "value": "3\/4 Size"
                }                                          ],
            "attribute_summary": "Size: 3\/4 Size",

            "price": {
              "delivery_country": "DE",
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 29.33,
              "tax_included": 34.90,
              "without_reduction_tax_excluded": 29.33,
              "without_reduction_tax_included": 34.90,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 5,
            "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=104&id_product_attribute=297&qty=1&setCountry=1&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 104,
            "id_product_attribute": 295,
            "is_default": false,
            "sku": "819\/602",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/wittner-center-mounted-violin-chinrest-104.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/wittner-center-mounted-violin-chinrest.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 10,
                  "group_name": "Size",
                  "value": "1\/4 + 1\/2 Size"
                }                                          ],
            "attribute_summary": "Size: 1\/4 + 1\/2 Size",

            "price": {
              "delivery_country": "DE",
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 29.33,
              "tax_included": 34.90,
              "without_reduction_tax_excluded": 29.33,
              "without_reduction_tax_included": 34.90,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 5,
            "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=104&id_product_attribute=295&qty=1&setCountry=1&setCurrency=1"
            }
          }                        ],

      "pricing": {
        "scope": "default_variant",
        "default_id_product_attribute": 297,
        "delivery_country": "DE",
        "currency": "EUR",
        "currency_symbol": "\u20ac",
        "tax_rate": 19,
        "use_taxes": true,
        "show_taxes": true,
        "price_tax_included": 34.90,
        "price_tax_excluded": 29.33,
        "price_without_reduction": 29.33,
        "reduction_percent": 0,
        "reduction_price": 0      },

      "availability": {
        "status": "https://schema.org/InStock",
        "orderable": true,
        "available_for_order": true,
        "show_price": true,
        "quantity": 15,
        "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."
      }
    }
  }
}