{
  "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": 260
    },
    "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=260&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=260&setCountry=1&setCurrency=1",
      "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=260&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\/6-chord-autoharp-zither-double-string-260.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\/6-chord-autoharp-zither-double-string-260.html#product",
      "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-double-string-260.html",
      "urls": {
        "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=260&setCountry=1&setCurrency=1",
        "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=260&setCountry=1&setCurrency=1",
        "human": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-double-string-260.html"
      },

      "id_product": 260,
      "name": "6-Chord Autoharp Zither \u2013 Double String",
      "description": "Autoharp zither with 6 chords and 25 double melody strings. Rich, resonant sound supplied with an instruction booklet, tuning wrench and zither ring.",
      "full_description": "The double-string 6-Chord Autoharp Zither by C. Robert Hopf combines an easy-to-learn playing concept with a fuller, more resonant sound. Its intuitive chord layout allows beginners to accompany songs without extensive musical knowledge, while experienced players benefit from its rich tonal character and flexible performance.  The instrument features six chords with four strings each and 25 double melody strings, producing greater volume and tonal depth. The modern chord arrangement follows the widely used circle of fifths while retaining the traditional chord numbering system, making playing more intuitive and transposing into different keys considerably easier.  Supplied complete with an instruction booklet, tuning wrench and zither ring, the instrument is available in Black, Natural and Mahogany finishes. Black back and sides together with the elegant printed rose design give the zither a timeless and refined appearance.",
      "additional_text": "Autoharp zither with 6 chords \n 4 strings per chord \n 25 double melody strings \n Chord arrangement based on the circle of fifths \n Traditional chord numbering retained \n Includes instruction booklet \n Includes tuning wrench and zither ring \n Available finishes: Black, Natural or Mahogany \n Black back and sides \n Decorative rose print \n Manufacturer: C. Robert Hopf Inh. J\u00f6rg Hopf",

      "sku": "331\/100-4",
      "mpn": "331\/100-4",
      "ean13": "",
      "upc": "",

      "brand": {
        "@type": "Brand",
        "name": " C. Robert Hopf Inh. J\u00f6rg Hopf",
        "url": "https:\/\/musiccraft-instruments.com\/en\/c-robert-hopf-inh-jorg-hopf_29"      },

      "manufacturer": {
        "@type": "Organization",
        "id_manufacturer": 29,
        "name": " C. Robert Hopf Inh. J\u00f6rg Hopf",
        "url": "https:\/\/musiccraft-instruments.com\/en\/c-robert-hopf-inh-jorg-hopf_29"      },

      "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": 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": 2628,
            "cover": true,
            "position": 1,
            "legend": "6-Chord Autoharp Zither \u2013 Double String",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2628-large_default\/6-chord-autoharp-zither-double-string.webp"
          },                    {
            "id_image": 2627,
            "cover": false,
            "position": 2,
            "legend": "6-Chord Autoharp Zither \u2013 Double String",
            "url": "https:\/\/cdn1.musiccraft-instruments.com\/2627-large_default\/6-chord-autoharp-zither-double-string.webp"
          },                    {
            "id_image": 2626,
            "cover": false,
            "position": 3,
            "legend": "6-Chord Autoharp Zither \u2013 Double String",
            "url": "https:\/\/cdn1.musiccraft-instruments.com\/2626-large_default\/6-chord-autoharp-zither-double-string.webp"
          },                    {
            "id_image": 2629,
            "cover": false,
            "position": 4,
            "legend": "6-Chord Autoharp Zither \u2013 Double String",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2629-large_default\/6-chord-autoharp-zither-double-string.webp"
          }                        ],

            "shipping_weight": {
        "@type": "QuantitativeValue",
        "value": 5,
        "unitCode": "KGM",
        "note": "Shipping weight, not product content."
      },
      
      
      "variant_model": {
        "has_variants": true,
        "variant_count": 3,
        "default_id_product_attribute": 588
      },

      "offers": {
        "@type": "Offer",
        "offer_scope": "default_variant",
        "id_product": 260,
        "id_product_attribute": 588,
        "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-double-string-260.html",
        "price": 500.00,
        "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": 500.00,
          "priceCurrency": "EUR",
          "valueAddedTaxIncluded": true        }
              },

      "variant_offers": [
                            {
            "@type": "Offer",
            "id_product": 260,
            "id_product_attribute": 587,
            "is_default": false,
            "sku": "331\/100-4",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-double-string-260.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/2628-large_default\/6-chord-autoharp-zither-double-string.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 17,
                  "group_name": "Color",
                  "value": "Black"
                }                                          ],
            "attribute_summary": "Color: Black",

            "price": {
              "delivery_country": "DE",
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 420.17,
              "tax_included": 500.00,
              "without_reduction_tax_excluded": 420.17,
              "without_reduction_tax_included": 500.00,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 100,
            "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=260&id_product_attribute=587&qty=1&setCountry=1&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 260,
            "id_product_attribute": 588,
            "is_default": true,
            "sku": "331\/100-4",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-double-string-260.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/2628-large_default\/6-chord-autoharp-zither-double-string.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 17,
                  "group_name": "Color",
                  "value": "Nature"
                }                                          ],
            "attribute_summary": "Color: Nature",

            "price": {
              "delivery_country": "DE",
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 420.17,
              "tax_included": 500.00,
              "without_reduction_tax_excluded": 420.17,
              "without_reduction_tax_included": 500.00,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 100,
            "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=260&id_product_attribute=588&qty=1&setCountry=1&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 260,
            "id_product_attribute": 586,
            "is_default": false,
            "sku": "331\/100-4",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-double-string-260.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/2628-large_default\/6-chord-autoharp-zither-double-string.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 17,
                  "group_name": "Color",
                  "value": "Mahogany"
                }                                          ],
            "attribute_summary": "Color: Mahogany",

            "price": {
              "delivery_country": "DE",
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 420.17,
              "tax_included": 500.00,
              "without_reduction_tax_excluded": 420.17,
              "without_reduction_tax_included": 500.00,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 100,
            "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=260&id_product_attribute=586&qty=1&setCountry=1&setCurrency=1"
            }
          }                        ],

      "pricing": {
        "scope": "default_variant",
        "default_id_product_attribute": 588,
        "delivery_country": "DE",
        "currency": "EUR",
        "currency_symbol": "\u20ac",
        "tax_rate": 19,
        "use_taxes": true,
        "show_taxes": true,
        "price_tax_included": 500.00,
        "price_tax_excluded": 420.17,
        "price_without_reduction": 420.17,
        "reduction_percent": 0,
        "reduction_price": 0      },

      "availability": {
        "status": "https://schema.org/InStock",
        "orderable": true,
        "available_for_order": true,
        "show_price": true,
        "quantity": 300,
        "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."
      }
    }
  }
}