{
  "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": 259
    },
    "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=259&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=259&setCountry=1&setCurrency=1",
      "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=259&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-single-string-259.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-single-string-259.html#product",
      "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-single-string-259.html",
      "urls": {
        "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=259&setCountry=1&setCurrency=1",
        "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=259&setCountry=1&setCurrency=1",
        "human": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-single-string-259.html"
      },

      "id_product": 259,
      "name": "6-Chord Autoharp Zither \u2013 Single String",
      "description": "Autoharp zither with 6 chords and 25 melody strings. Easy to learn, supplied with an instruction booklet, tuning wrench and zither ring.",
      "full_description": "The 6-Chord Autoharp Zither by C. Robert Hopf provides an accessible introduction to traditional zither playing. Its intuitive chord layout allows beginners to accompany songs and play melodies without requiring extensive knowledge of music notation, while also offering experienced players a versatile instrument for recreational music-making.  The instrument features six chords with four strings each and 25 single melody strings. This new generation of autoharp zithers follows the widely used circle of fifths chord arrangement while retaining the traditional chord numbering system. As a result, playing becomes more intuitive and transposing to different keys is significantly easier for advanced musicians.  The zither is supplied complete with an instruction booklet, tuning wrench and zither ring. It is available in Black, Natural and Mahogany finishes. Black sides and back together with an elegant printed rose design complete its classic appearance.",
      "additional_text": "Autoharp zither with 6 chords \n 4 strings per chord \n 25 single 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\/100-3",
      "mpn": "331\/100-3",
      "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": 169,
            "name": "Product declaration",
            "value": "Set"
          },                    {
            "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": 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": 2624,
            "cover": true,
            "position": 1,
            "legend": "6-Chord Autoharp Zither \u2013 Single String",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2624-large_default\/6-chord-autoharp-zither-single-string.webp"
          },                    {
            "id_image": 2625,
            "cover": false,
            "position": 2,
            "legend": "6-Chord Autoharp Zither \u2013 Single String",
            "url": "https:\/\/cdn2.musiccraft-instruments.com\/2625-large_default\/6-chord-autoharp-zither-single-string.webp"
          },                    {
            "id_image": 2623,
            "cover": false,
            "position": 3,
            "legend": "6-Chord Autoharp Zither \u2013 Single String",
            "url": "https:\/\/cdn2.musiccraft-instruments.com\/2623-large_default\/6-chord-autoharp-zither-single-string.webp"
          },                    {
            "id_image": 2620,
            "cover": false,
            "position": 4,
            "legend": "6-Chord Autoharp Zither \u2013 Single String",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2620-large_default\/6-chord-autoharp-zither-single-string.webp"
          },                    {
            "id_image": 2621,
            "cover": false,
            "position": 5,
            "legend": "6-Chord Autoharp Zither \u2013 Single String",
            "url": "https:\/\/cdn1.musiccraft-instruments.com\/2621-large_default\/6-chord-autoharp-zither-single-string.webp"
          },                    {
            "id_image": 2622,
            "cover": true,
            "position": 6,
            "legend": "6-Chord Autoharp Zither \u2013 Single String",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2622-large_default\/6-chord-autoharp-zither-single-string.webp"
          },                    {
            "id_image": 2619,
            "cover": false,
            "position": 7,
            "legend": "6-Chord Autoharp Zither \u2013 Single String",
            "url": "https:\/\/cdn2.musiccraft-instruments.com\/2619-large_default\/6-chord-autoharp-zither-single-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": 583
      },

      "offers": {
        "@type": "Offer",
        "offer_scope": "default_variant",
        "id_product": 259,
        "id_product_attribute": 583,
        "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-single-string-259.html",
        "price": 425.00,
        "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": 425.00,
          "priceCurrency": "EUR",
          "valueAddedTaxIncluded": true        }
              },

      "variant_offers": [
                            {
            "@type": "Offer",
            "id_product": 259,
            "id_product_attribute": 585,
            "is_default": false,
            "sku": "331\/100-3",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-single-string-259.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/2624-large_default\/6-chord-autoharp-zither-single-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": 357.14,
              "tax_included": 425.00,
              "without_reduction_tax_excluded": 357.14,
              "without_reduction_tax_included": 425.00,
              "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=259&id_product_attribute=585&qty=1&setCountry=1&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 259,
            "id_product_attribute": 583,
            "is_default": true,
            "sku": "331\/100-3",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-single-string-259.html",
            "image": "https:\/\/cdn3.musiccraft-instruments.com\/2622-large_default\/6-chord-autoharp-zither-single-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": 357.14,
              "tax_included": 425.00,
              "without_reduction_tax_excluded": 357.14,
              "without_reduction_tax_included": 425.00,
              "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=259&id_product_attribute=583&qty=1&setCountry=1&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 259,
            "id_product_attribute": 584,
            "is_default": false,
            "sku": "331\/100-3",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-single-string-259.html",
            "image": "https:\/\/cdn2.musiccraft-instruments.com\/2623-large_default\/6-chord-autoharp-zither-single-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": 357.14,
              "tax_included": 425.00,
              "without_reduction_tax_excluded": 357.14,
              "without_reduction_tax_included": 425.00,
              "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=259&id_product_attribute=584&qty=1&setCountry=1&setCurrency=1"
            }
          }                        ],

      "pricing": {
        "scope": "default_variant",
        "default_id_product_attribute": 583,
        "delivery_country": "DE",
        "currency": "EUR",
        "currency_symbol": "\u20ac",
        "tax_rate": 19,
        "use_taxes": true,
        "show_taxes": true,
        "price_tax_included": 425.00,
        "price_tax_excluded": 357.14,
        "price_without_reduction": 357.14,
        "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."
      }
    }
  }
}