{
  "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": 103
    },
    "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=103&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=103&setCountry=1&setCurrency=1",
      "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=103&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-side-mounted-violin-chinrest-103.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-side-mounted-violin-chinrest-103.html#product",
      "url": "https:\/\/musiccraft-instruments.com\/en\/p\/wittner-side-mounted-violin-chinrest-103.html",
      "urls": {
        "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=103&setCountry=1&setCurrency=1",
        "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=103&setCountry=1&setCurrency=1",
        "human": "https:\/\/musiccraft-instruments.com\/en\/p\/wittner-side-mounted-violin-chinrest-103.html"
      },

      "id_product": 103,
      "name": "Wittner Side-Mounted Violin Chinrest \u2013 Lightweight. Stable. Smart.",
      "description": "The Wittner side-mounted violin chinrest combines modern materials with practical comfort. Lightweight, skin-friendly and built for everyday playing.",
      "full_description": "Some accessories are best when you stop noticing them completely. This one achieves exactly that.  The Wittner side-mounted violin chinrest is designed for musicians who value comfort, low weight and reliable functionality. Its modern construction provides secure positioning without unnecessary pressure and supports a relaxed playing posture.  Typical Wittner: functional thinking, precise craftsmanship and made for daily use \u2014 from lessons to the stage. The skin-friendly materials and lightweight construction often become noticeable within minutes of playing.   Less strain. More focus on what really matters: playing.  \n \n Side-mounted design for violin \n Extremely lightweight construction \n Skin-friendly materials \n Comfortable support and playing feel \n Ideal for practice, lessons and stage use \n Quality by Wittner",
      "additional_text": "Good technology does not need attention. It just needs to work.",

      "sku": "819\/400",
      "mpn": "819\/400",
      "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": 150,
            "name": "Product declaration",
            "value": "Spare parts"
          },                    {
            "id_feature": 1,
            "id_feature_value": 1,
            "name": "Product declaration",
            "value": "Utensils"
          },                    {
            "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": 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": 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": 2,
            "id_feature_value": 502,
            "name": "Badges",
            "value": "Different variants"
          }                        ],

      "agent_faqs": [
              ],

      "images": [
                            {
            "id_image": 2242,
            "cover": true,
            "position": 1,
            "legend": "Wittner Side-Mounted Violin Chinrest \u2013 Lightweight. Stable. Smart.",
            "url": "https:\/\/cdn1.musiccraft-instruments.com\/2242-large_default\/wittner-side-mounted-violin-chinrest.webp"
          },                    {
            "id_image": 2243,
            "cover": false,
            "position": 2,
            "legend": "Wittner Side-Mounted Violin Chinrest \u2013 Lightweight. Stable. Smart.",
            "url": "https:\/\/cdn2.musiccraft-instruments.com\/2243-large_default\/wittner-side-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": 4,
        "default_id_product_attribute": 290
      },

      "offers": {
        "@type": "Offer",
        "offer_scope": "default_variant",
        "id_product": 103,
        "id_product_attribute": 290,
        "url": "https:\/\/musiccraft-instruments.com\/en\/p\/wittner-side-mounted-violin-chinrest-103.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": 103,
            "id_product_attribute": 291,
            "is_default": false,
            "sku": "819\/401",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/wittner-side-mounted-violin-chinrest-103.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/wittner-side-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=103&id_product_attribute=291&qty=1&setCountry=1&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 103,
            "id_product_attribute": 290,
            "is_default": true,
            "sku": "819\/400",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/wittner-side-mounted-violin-chinrest-103.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/wittner-side-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=103&id_product_attribute=290&qty=1&setCountry=1&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 103,
            "id_product_attribute": 292,
            "is_default": false,
            "sku": "819\/402",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/wittner-side-mounted-violin-chinrest-103.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/wittner-side-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=103&id_product_attribute=292&qty=1&setCountry=1&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 103,
            "id_product_attribute": 293,
            "is_default": false,
            "sku": "819\/403",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/wittner-side-mounted-violin-chinrest-103.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/1-large_default\/wittner-side-mounted-violin-chinrest.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 10,
                  "group_name": "Size",
                  "value": "1\/8 + 1\/6 Size"
                }                                          ],
            "attribute_summary": "Size: 1\/8 + 1\/6 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=103&id_product_attribute=293&qty=1&setCountry=1&setCurrency=1"
            }
          }                        ],

      "pricing": {
        "scope": "default_variant",
        "default_id_product_attribute": 290,
        "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": 20,
        "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."
      }
    }
  }
}