{
  "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": 261
    },
    "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=261&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=261&setCountry=1&setCurrency=1",
      "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=261&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-reinforced-chords-single-string-261.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-reinforced-chords-single-string-261.html#product",
      "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-reinforced-chords-single-string-261.html",
      "urls": {
        "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=261&setCountry=1&setCurrency=1",
        "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=261&setCountry=1&setCurrency=1",
        "human": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-reinforced-chords-single-string-261.html"
      },

      "id_product": 261,
      "name": "6-Chord Autoharp Zither \u2013 Reinforced Chords, Single String",
      "description": "Autoharp zither with 6 reinforced chords and 25 single melody strings. Includes an instruction booklet, tuning wrench and zither ring.",
      "full_description": "The 6-Chord Autoharp Zither with reinforced chords by C. Robert Hopf is designed for musicians seeking a fuller accompaniment while maintaining an easy-to-learn playing style. Its intuitive chord layout makes it equally suitable for beginners with little musical experience and for experienced zither players.  The instrument features six reinforced chords with seven strings per chord and 25 single melody strings, producing a rich, resonant accompaniment. The modern chord arrangement follows the widely used circle of fifths while retaining the traditional chord numbering system. This combination makes learning new pieces easier and allows experienced players to transpose effortlessly into different keys.  The zither is supplied complete with an instruction booklet, tuning wrench and zither ring. It is available in Black, Natural and Mahogany finishes. Black back and sides together with the elegant printed rose design complete its classic appearance.",
      "additional_text": "Autoharp zither with 6 reinforced chords \n 7 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\/100-5",
      "mpn": "331\/100-5",
      "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": 2634,
            "cover": true,
            "position": 1,
            "legend": "6-Chord Autoharp Zither \u2013 Reinforced Chords, Single String",
            "url": "https:\/\/cdn2.musiccraft-instruments.com\/2634-large_default\/6-chord-autoharp-zither-reinforced-chords-single-string.webp"
          },                    {
            "id_image": 2630,
            "cover": false,
            "position": 2,
            "legend": "6-Chord Autoharp Zither \u2013 Reinforced Chords, Single String",
            "url": "https:\/\/cdn1.musiccraft-instruments.com\/2630-large_default\/6-chord-autoharp-zither-reinforced-chords-single-string.webp"
          },                    {
            "id_image": 2631,
            "cover": false,
            "position": 3,
            "legend": "6-Chord Autoharp Zither \u2013 Reinforced Chords, Single String",
            "url": "https:\/\/cdn1.musiccraft-instruments.com\/2631-large_default\/6-chord-autoharp-zither-reinforced-chords-single-string.webp"
          },                    {
            "id_image": 2632,
            "cover": false,
            "position": 4,
            "legend": "6-Chord Autoharp Zither \u2013 Reinforced Chords, Single String",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2632-large_default\/6-chord-autoharp-zither-reinforced-chords-single-string.webp"
          },                    {
            "id_image": 2633,
            "cover": false,
            "position": 5,
            "legend": "6-Chord Autoharp Zither \u2013 Reinforced Chords, Single String",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2633-large_default\/6-chord-autoharp-zither-reinforced-chords-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": 591
      },

      "offers": {
        "@type": "Offer",
        "offer_scope": "default_variant",
        "id_product": 261,
        "id_product_attribute": 591,
        "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-reinforced-chords-single-string-261.html",
        "price": 544.00,
        "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": 544.00,
          "priceCurrency": "EUR",
          "valueAddedTaxIncluded": true        }
              },

      "variant_offers": [
                            {
            "@type": "Offer",
            "id_product": 261,
            "id_product_attribute": 590,
            "is_default": false,
            "sku": "331\/100-5",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-reinforced-chords-single-string-261.html",
            "image": "https:\/\/cdn2.musiccraft-instruments.com\/2634-large_default\/6-chord-autoharp-zither-reinforced-chords-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": 457.14,
              "tax_included": 544.00,
              "without_reduction_tax_excluded": 457.14,
              "without_reduction_tax_included": 544.00,
              "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=261&id_product_attribute=590&qty=1&setCountry=1&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 261,
            "id_product_attribute": 591,
            "is_default": true,
            "sku": "331\/100-5",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-reinforced-chords-single-string-261.html",
            "image": "https:\/\/cdn2.musiccraft-instruments.com\/2634-large_default\/6-chord-autoharp-zither-reinforced-chords-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": 457.14,
              "tax_included": 544.00,
              "without_reduction_tax_excluded": 457.14,
              "without_reduction_tax_included": 544.00,
              "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=261&id_product_attribute=591&qty=1&setCountry=1&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 261,
            "id_product_attribute": 589,
            "is_default": false,
            "sku": "331\/100-5",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/6-chord-autoharp-zither-reinforced-chords-single-string-261.html",
            "image": "https:\/\/cdn2.musiccraft-instruments.com\/2634-large_default\/6-chord-autoharp-zither-reinforced-chords-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": 457.14,
              "tax_included": 544.00,
              "without_reduction_tax_excluded": 457.14,
              "without_reduction_tax_included": 544.00,
              "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=261&id_product_attribute=589&qty=1&setCountry=1&setCurrency=1"
            }
          }                        ],

      "pricing": {
        "scope": "default_variant",
        "default_id_product_attribute": 591,
        "delivery_country": "DE",
        "currency": "EUR",
        "currency_symbol": "\u20ac",
        "tax_rate": 19,
        "use_taxes": true,
        "show_taxes": true,
        "price_tax_included": 544.00,
        "price_tax_excluded": 457.14,
        "price_without_reduction": 457.14,
        "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."
      }
    }
  }
}