{
  "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": 258
    },
    "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=258&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=258&setCountry=1&setCurrency=1",
      "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=258&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\/40-string-air-resonance-harp-zither-258.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\/40-string-air-resonance-harp-zither-258.html#product",
      "url": "https:\/\/musiccraft-instruments.com\/en\/p\/40-string-air-resonance-harp-zither-258.html",
      "urls": {
        "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=258&setCountry=1&setCurrency=1",
        "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=258&setCountry=1&setCurrency=1",
        "human": "https:\/\/musiccraft-instruments.com\/en\/p\/40-string-air-resonance-harp-zither-258.html"
      },

      "id_product": 258,
      "name": "Air Resonance Harp Zither \u2013 40 Strings",
      "description": "Premium 40-string Air Resonance Harp Zither by Horst W\u00fcnsche featuring a rosewood soundboard, mahogany back and hand-carved details. Supplied with case and accessories.",
      "full_description": "The Air Resonance Harp Zither by Horst W\u00fcnsche represents exceptional German craftsmanship, combining carefully selected tonewoods with outstanding attention to detail. Designed for discerning musicians, this instrument offers refined workmanship, reliable playability and an elegant appearance.  Featuring 40 strings and a scale length of 43.5 cm, the instrument is equipped with durable stainless steel frets for precise performance. The rosewood soundboard, mahogany back and flamed maple veneered sides contribute to a balanced, resonant tone while enhancing the instrument's visual appeal. Hand-carved bridge support and pillar highlight the traditional artistry of this harp zither.  The instrument is supplied complete with a fitted case, protective case cover and cleaning swab. Manufactured by Horst W\u00fcnsche Zitherbau KG, this Air Resonance Harp Zither reflects the finest traditions of German zither making and premium handcrafted quality.",
      "additional_text": "Air Resonance Harp Zither \n 40 strings \n Scale length: 43.5 cm \n Stainless steel frets \n Soundboard: Rosewood \n Back: Mahogany \n Sides: Flamed maple veneer \n Hand-carved bridge support and pillar \n Includes fitted case, protective cover and cleaning swab \n Manufacturer: Horst W\u00fcnsche Zitherbau KG",

      "sku": "30140",
      "mpn": "30140",
      "ean13": "",
      "upc": "",

      "brand": {
        "@type": "Brand",
        "name": "Horst W\u00fcnsche Zitherbau KG",
        "url": "https:\/\/musiccraft-instruments.com\/en\/horst-wunsche-zitherbau-kg_28"      },

      "manufacturer": {
        "@type": "Organization",
        "id_manufacturer": 28,
        "name": "Horst W\u00fcnsche Zitherbau KG",
        "url": "https:\/\/musiccraft-instruments.com\/en\/horst-wunsche-zitherbau-kg_28"      },

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

      "main_category": {
        "id_category": 27,
        "name": "Zithers",
        "link_rewrite": "zithers",
        "urls": {
          "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=27&setCountry=1&setCurrency=1",
          "human": "https:\/\/musiccraft-instruments.com\/en\/zithers-27"
        }
      },

      "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": 3,
            "name": "Product declaration",
            "value": "Single item"
          },                    {
            "id_feature": 1,
            "id_feature_value": 169,
            "name": "Product declaration",
            "value": "Set"
          },                    {
            "id_feature": 15,
            "id_feature_value": 130,
            "name": "Taxation",
            "value": "Standard Rate"
          },                    {
            "id_feature": 9,
            "id_feature_value": 394,
            "name": "Instrument",
            "value": "zither"
          },                    {
            "id_feature": 18,
            "id_feature_value": 396,
            "name": "Core material",
            "value": "Mahogany"
          },                    {
            "id_feature": 18,
            "id_feature_value": 395,
            "name": "Core material",
            "value": "Rosewood"
          },                    {
            "id_feature": 18,
            "id_feature_value": 372,
            "name": "Core material",
            "value": "Maple wood"
          }                        ],

      "agent_faqs": [
              ],

      "images": [
                            {
            "id_image": 2617,
            "cover": true,
            "position": 1,
            "legend": "Air Resonance Harp Zither \u2013 40 Strings",
            "url": "https:\/\/cdn2.musiccraft-instruments.com\/2617-large_default\/40-string-air-resonance-harp-zither.webp"
          },                    {
            "id_image": 2614,
            "cover": false,
            "position": 2,
            "legend": "Air Resonance Harp Zither \u2013 40 Strings",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2614-large_default\/40-string-air-resonance-harp-zither.webp"
          },                    {
            "id_image": 2616,
            "cover": false,
            "position": 3,
            "legend": "Air Resonance Harp Zither \u2013 40 Strings",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2616-large_default\/40-string-air-resonance-harp-zither.webp"
          },                    {
            "id_image": 2618,
            "cover": false,
            "position": 4,
            "legend": "Air Resonance Harp Zither \u2013 40 Strings",
            "url": "https:\/\/cdn2.musiccraft-instruments.com\/2618-large_default\/40-string-air-resonance-harp-zither.webp"
          },                    {
            "id_image": 2615,
            "cover": false,
            "position": 5,
            "legend": "Air Resonance Harp Zither \u2013 40 Strings",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2615-large_default\/40-string-air-resonance-harp-zither.webp"
          },                    {
            "id_image": 2613,
            "cover": false,
            "position": 6,
            "legend": "Air Resonance Harp Zither \u2013 40 Strings",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2613-large_default\/40-string-air-resonance-harp-zither.webp"
          }                        ],

            "shipping_weight": {
        "@type": "QuantitativeValue",
        "value": 5,
        "unitCode": "KGM",
        "note": "Shipping weight, not product content."
      },
      
      
      "variant_model": {
        "has_variants": false,
        "variant_count": 0,
        "default_id_product_attribute": 0
      },

      "offers": {
        "@type": "Offer",
        "offer_scope": "product",
        "id_product": 258,
        "id_product_attribute": 0,
        "url": "https:\/\/musiccraft-instruments.com\/en\/p\/40-string-air-resonance-harp-zither-258.html",
        "price": 4260.00,
        "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": 4260.00,
          "priceCurrency": "EUR",
          "valueAddedTaxIncluded": true        }
        ,

        
        "action": {
          "type": "add_to_cart",
          "method": "GET",
          "enabled": true,
          "quantity": 1,
          "url": "https:\/\/musiccraft-instruments.com\/en\/shopping-cart?add=1&id_product=258&qty=1&setCountry=1&setCurrency=1"
        }
              },

      "variant_offers": [
              ],

      "pricing": {
        "scope": "product",
        "default_id_product_attribute": 0,
        "delivery_country": "DE",
        "currency": "EUR",
        "currency_symbol": "\u20ac",
        "tax_rate": 19,
        "use_taxes": true,
        "show_taxes": true,
        "price_tax_included": 4260.00,
        "price_tax_excluded": 3579.83,
        "price_without_reduction": 3579.83,
        "reduction_percent": 0,
        "reduction_price": 0      },

      "availability": {
        "status": "https://schema.org/InStock",
        "orderable": true,
        "available_for_order": true,
        "show_price": true,
        "quantity": 100,
        "minimal_quantity": 1,
        "variant_stock_available": false,
        "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."
      }
    }
  }
}