{
  "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": 274
    },
    "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=274&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=274&setCountry=1&setCurrency=1",
      "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=274&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\/migma-dulcimer-chord-zither-tuning-key-offset-head-274.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\/migma-dulcimer-chord-zither-tuning-key-offset-head-274.html#product",
      "url": "https:\/\/musiccraft-instruments.com\/en\/p\/migma-dulcimer-chord-zither-tuning-key-offset-head-274.html",
      "urls": {
        "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=274&setCountry=1&setCurrency=1",
        "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=274&setCountry=1&setCurrency=1",
        "human": "https:\/\/musiccraft-instruments.com\/en\/p\/migma-dulcimer-chord-zither-tuning-key-offset-head-274.html"
      },

      "id_product": 274,
      "name": "Migma Dulcimer & Chord Zither Tuning Key with Offset Head",
      "description": "Tuning key for hammered dulcimers and chord zithers with European beech handle and offset head. For 5.0 mm tuning pins, available with square or star socket.",
      "full_description": "The Migma Dulcimer and Chord Zither Tuning Key is a practical tool for tuning hammered dulcimers and chord zithers. Designed for tuning pins with a diameter of 5.0 mm, it allows controlled adjustment when setting the instrument to the required pitch.  The European beech handle provides comfortable handling, while the offset head makes it easier to position and turn the tuning key on the pin. Depending on the type of tuning pins used, the key is available with either a square or star-shaped socket.  The tuning key is made in Germany. The square version is available under article number 866\/124, while the version with a star socket is supplied under article number 866\/124a.",
      "additional_text": "Tuning key for hammered dulcimers and chord zithers \n For tuning pins: \u00d8 5.0 mm \n Handle: European beech \n Offset head \n Square version: Art. No. 866\/124 \n Star version: Art. No. 866\/124a \n Made in Germany \n Manufacturer: Migma e.G. \n Model: Dulcimer \/ Chord Zither Tuning Key",

      "sku": "866\/124",
      "mpn": "866\/124",
      "ean13": "",
      "upc": "",

      "brand": {
        "@type": "Brand",
        "name": "MIGMA eG",
        "url": "https:\/\/musiccraft-instruments.com\/en\/migma-eg_21"      },

      "manufacturer": {
        "@type": "Organization",
        "id_manufacturer": 21,
        "name": "MIGMA eG",
        "url": "https:\/\/musiccraft-instruments.com\/en\/migma-eg_21"      },

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

      "main_category": {
        "id_category": 73,
        "name": "Tuners",
        "link_rewrite": "tuners",
        "urls": {
          "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=73&setCountry=1&setCurrency=1",
          "human": "https:\/\/musiccraft-instruments.com\/en\/tuners-73"
        }
      },

      "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": 15,
            "id_feature_value": 130,
            "name": "Taxation",
            "value": "Standard Rate"
          },                    {
            "id_feature": 9,
            "id_feature_value": 394,
            "name": "Instrument",
            "value": "zither"
          },                    {
            "id_feature": 28,
            "id_feature_value": 336,
            "name": "Components",
            "value": "Tune bars"
          },                    {
            "id_feature": 28,
            "id_feature_value": 329,
            "name": "Components",
            "value": "Fine tuners"
          },                    {
            "id_feature": 22,
            "id_feature_value": 172,
            "name": "Intended Use",
            "value": "Intermediate"
          },                    {
            "id_feature": 22,
            "id_feature_value": 171,
            "name": "Intended Use",
            "value": "Beginner"
          },                    {
            "id_feature": 22,
            "id_feature_value": 173,
            "name": "Intended Use",
            "value": "Stage"
          },                    {
            "id_feature": 2,
            "id_feature_value": 502,
            "name": "Badges",
            "value": "Different variants"
          },                    {
            "id_feature": 18,
            "id_feature_value": 402,
            "name": "Core material",
            "value": "Whitebeech"
          }                        ],

      "agent_faqs": [
              ],

      "images": [
                            {
            "id_image": 2678,
            "cover": true,
            "position": 1,
            "legend": "Migma Dulcimer & Chord Zither Tuning Key with Offset Head",
            "url": "https:\/\/cdn3.musiccraft-instruments.com\/2678-large_default\/migma-dulcimer-chord-zither-tuning-key-offset-head.webp"
          },                    {
            "id_image": 2679,
            "cover": false,
            "position": 2,
            "legend": "Migma Dulcimer & Chord Zither Tuning Key with Offset Head",
            "url": "https:\/\/cdn1.musiccraft-instruments.com\/2679-large_default\/migma-dulcimer-chord-zither-tuning-key-offset-head.webp"
          }                        ],

      
      
      "variant_model": {
        "has_variants": true,
        "variant_count": 2,
        "default_id_product_attribute": 648
      },

      "offers": {
        "@type": "Offer",
        "offer_scope": "default_variant",
        "id_product": 274,
        "id_product_attribute": 648,
        "url": "https:\/\/musiccraft-instruments.com\/en\/p\/migma-dulcimer-chord-zither-tuning-key-offset-head-274.html",
        "price": 16.20,
        "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": 16.20,
          "priceCurrency": "EUR",
          "valueAddedTaxIncluded": true        }
              },

      "variant_offers": [
                            {
            "@type": "Offer",
            "id_product": 274,
            "id_product_attribute": 648,
            "is_default": true,
            "sku": "866\/124a",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/migma-dulcimer-chord-zither-tuning-key-offset-head-274.html",
            "image": "https:\/\/cdn1.musiccraft-instruments.com\/1-large_default\/migma-dulcimer-chord-zither-tuning-key-offset-head.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 22,
                  "group_name": "Hole",
                  "value": "Star"
                }                                          ],
            "attribute_summary": "Hole: Star",

            "price": {
              "delivery_country": "DE",
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 13.61,
              "tax_included": 16.20,
              "without_reduction_tax_excluded": 13.61,
              "without_reduction_tax_included": 16.20,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 10,
            "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=274&id_product_attribute=648&qty=1&setCountry=1&setCurrency=1"
            }
          },                    {
            "@type": "Offer",
            "id_product": 274,
            "id_product_attribute": 647,
            "is_default": false,
            "sku": "866\/124",
            "url": "https:\/\/musiccraft-instruments.com\/en\/p\/migma-dulcimer-chord-zither-tuning-key-offset-head-274.html",
            "image": "https:\/\/cdn1.musiccraft-instruments.com\/1-large_default\/migma-dulcimer-chord-zither-tuning-key-offset-head.webp",

                                                                                                                                                                                                                                                "attributes": [
                                              {
                  "group_id": 22,
                  "group_name": "Hole",
                  "value": "Square"
                }                                          ],
            "attribute_summary": "Hole: Square",

            "price": {
              "delivery_country": "DE",
              "currency": "EUR",
              "currency_symbol": "\u20ac",
              "tax_rate": 19,
              "tax_excluded": 11.43,
              "tax_included": 13.60,
              "without_reduction_tax_excluded": 11.43,
              "without_reduction_tax_included": 13.60,
              "value_added_tax_included": true            },

            
            "availability": "https://schema.org/InStock",
            "quantity": 10,
            "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=274&id_product_attribute=647&qty=1&setCountry=1&setCurrency=1"
            }
          }                        ],

      "pricing": {
        "scope": "default_variant",
        "default_id_product_attribute": 648,
        "delivery_country": "DE",
        "currency": "EUR",
        "currency_symbol": "\u20ac",
        "tax_rate": 19,
        "use_taxes": true,
        "show_taxes": true,
        "price_tax_included": 16.20,
        "price_tax_excluded": 13.61,
        "price_without_reduction": 13.61,
        "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."
      }
    }
  }
}