{ "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": 0, "iso_code": false }, "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": 95 }, "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=95&setCountry=0&setCurrency=1", "agent": { "root": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/root?setCountry=0&setCurrency=1", "sitemap": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/sitemap?setCountry=0&setCurrency=1", "search": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/search?setCountry=0&setCurrency=1", "cart": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/cart?setCountry=0&setCurrency=1", "product": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=95&setCountry=0&setCurrency=1", "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=95&setCountry=0&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\/viola-22152-holger-krupke-95.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\/viola-22152-holger-krupke-95.html#product", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22152-holger-krupke-95.html", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=95&setCountry=0&setCurrency=1", "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=95&setCountry=0&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22152-holger-krupke-95.html" }, "id_product": 95, "name": "Viola \"Andrea\" 22152 \u2013 Soloist tone without compromise", "description": "Handcrafted soloist viola by Holger Krupke based on Guarneri or Stradivari models with aged tonewood and exceptional expressive depth.", "full_description": "Some violas support an ensemble. Others carry an entire stage. The Viola 22152 by Holger Krupke was built exactly for that level of performance. This extraordinary soloist instrument combines traditional master craftsmanship with uncompromising tonal culture. Inspired by historic Guarneri del Ges\u00f9 or Strad Medici models, the Viola 22152 develops a tone full of depth, warmth and remarkable projection. From the very first note, it becomes clear that this instrument offers far more than technical precision. It creates character, tonal color and musical openness that reveals even the finest nuances. This viola doesn\u2019t only react to technique. It reacts to personality. The top made from 80\u2013100 year old hazel spruce creates an exceptionally fast and lively response. The Italian poplar back adds warmth and an almost vocal depth to the sound. This combination gives the instrument both projection and emotional openness. The premium snakewood fittings, Evah Pirazzi Gold strings and the finest custom-made varnish further emphasize the exclusive character of this master instrument. Available in different sizes, the Viola 22152 can be perfectly adapted to the player\u2019s physical comfort, tonal vision and playing style \u2014 a crucial factor for demanding soloist instruments. Signed with the label \u201cHolger Krupke\u201d and a traditional branded stamp, this is far more than just another viola. It is an instrument with its own voice. For soloists. For the highest demands. For people who don\u2019t just want to play music. But shape it. Not ordinary. Exceptional. Handcrafted by Holger Krupke. Traditional German master workshop craftsmanship.", "additional_text": "Handcrafted soloist viola by Holger Krupke \n Available in different sizes \n Model based on Guarneri del Ges\u00f9 or Strad Medici \n Top made from 80\u2013100 year old hazel spruce \n Back made from Italian poplar \n Warm, projecting and highly expressive tonal character \n Premium snakewood fittings \n Fitted with Evah Pirazzi Gold strings \n Finest custom-made varnish \n Built after Stradivari or Guarneri concepts \n Signed with label \u201cHolger Krupke\u201d and branded stamp \n Highly responsive feel with enormous dynamics \n Designed for soloists and highest musical demands \n Traditional craftsmanship \n Made in Germany", "sku": "214\/22152", "mpn": "214\/22152", "ean13": "", "upc": "", "brand": { "@type": "Brand", "name": "Holger Krupke Geigenbaumeister", "url": "https:\/\/musiccraft-instruments.com\/en\/holger-krupke-geigenbaumeister_17" }, "manufacturer": { "@type": "Organization", "id_manufacturer": 17, "name": "Holger Krupke Geigenbaumeister", "url": "https:\/\/musiccraft-instruments.com\/en\/holger-krupke-geigenbaumeister_17" }, "supplier": { "@type": "Organization", "id_supplier": 1, "name": "Migma e.G." }, "main_category": { "id_category": 22, "name": "Violas", "link_rewrite": "violas", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=22&setCountry=0&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/en\/violas-22" } }, "categories": [ { "id_category": 4, "name": "Instruments", "link_rewrite": "instruments", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=4&setCountry=0&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=0&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=0&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=0&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": 149, "name": "Instrument", "value": "Viola" }, { "id_feature": 22, "id_feature_value": 172, "name": "Intended Use", "value": "Intermediate" }, { "id_feature": 22, "id_feature_value": 174, "name": "Intended Use", "value": "Studio" }, { "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" } ], "agent_faqs": [ ], "images": [ { "id_image": 2190, "cover": true, "position": 1, "legend": "Viola 22152 \u2013 Soloist tone without compromise", "url": "https:\/\/cdn1.musiccraft-instruments.com\/2190-large_default\/viola-22152-holger-krupke.webp" }, { "id_image": 2194, "cover": false, "position": 2, "legend": "Viola 22152 \u2013 Soloist tone without compromise", "url": "https:\/\/cdn2.musiccraft-instruments.com\/2194-large_default\/viola-22152-holger-krupke.webp" }, { "id_image": 2193, "cover": false, "position": 3, "legend": "Viola 22152 \u2013 Soloist tone without compromise", "url": "https:\/\/cdn2.musiccraft-instruments.com\/2193-large_default\/viola-22152-holger-krupke.webp" }, { "id_image": 2191, "cover": false, "position": 4, "legend": "Viola 22152 \u2013 Soloist tone without compromise", "url": "https:\/\/cdn3.musiccraft-instruments.com\/2191-large_default\/viola-22152-holger-krupke.webp" }, { "id_image": 2192, "cover": false, "position": 5, "legend": "Viola 22152 \u2013 Soloist tone without compromise", "url": "https:\/\/cdn3.musiccraft-instruments.com\/2192-large_default\/viola-22152-holger-krupke.webp" } ], "shipping_weight": { "@type": "QuantitativeValue", "value": 1.5, "unitCode": "KGM", "note": "Shipping weight, not product content." }, "variant_model": { "has_variants": true, "variant_count": 9, "default_id_product_attribute": 172 }, "offers": { "@type": "Offer", "offer_scope": "default_variant", "id_product": 95, "id_product_attribute": 172, "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22152-holger-krupke-95.html", "price": 11900.00, "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": 11900.00, "priceCurrency": "EUR", "valueAddedTaxIncluded": true } }, "variant_offers": [ { "@type": "Offer", "id_product": 95, "id_product_attribute": 172, "is_default": true, "sku": "214\/22152-380", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22152-holger-krupke-95.html", "image": "https:\/\/cdn1.musiccraft-instruments.com\/1-large_default\/viola-22152-holger-krupke.webp", "attributes": [ { "group_id": 10, "group_name": "Size", "value": "38 cm" } ], "attribute_summary": "Size: 38 cm", "price": { "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 10000.00, "tax_included": 11900.00, "without_reduction_tax_excluded": 10000.00, "without_reduction_tax_included": 11900.00, "value_added_tax_included": true }, "availability": "https://schema.org/InStock", "quantity": 5, "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=95&id_product_attribute=172&qty=1&setCountry=0&setCurrency=1" } }, { "@type": "Offer", "id_product": 95, "id_product_attribute": 173, "is_default": false, "sku": "214\/22152-385", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22152-holger-krupke-95.html", "image": "https:\/\/cdn1.musiccraft-instruments.com\/1-large_default\/viola-22152-holger-krupke.webp", "attributes": [ { "group_id": 10, "group_name": "Size", "value": "38,50 cm" } ], "attribute_summary": "Size: 38,50 cm", "price": { "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 10000.00, "tax_included": 11900.00, "without_reduction_tax_excluded": 10000.00, "without_reduction_tax_included": 11900.00, "value_added_tax_included": true }, "availability": "https://schema.org/InStock", "quantity": 5, "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=95&id_product_attribute=173&qty=1&setCountry=0&setCurrency=1" } }, { "@type": "Offer", "id_product": 95, "id_product_attribute": 174, "is_default": false, "sku": "214\/22152-390", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22152-holger-krupke-95.html", "image": "https:\/\/cdn1.musiccraft-instruments.com\/1-large_default\/viola-22152-holger-krupke.webp", "attributes": [ { "group_id": 10, "group_name": "Size", "value": "39 cm" } ], "attribute_summary": "Size: 39 cm", "price": { "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 10000.00, "tax_included": 11900.00, "without_reduction_tax_excluded": 10000.00, "without_reduction_tax_included": 11900.00, "value_added_tax_included": true }, "availability": "https://schema.org/InStock", "quantity": 5, "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=95&id_product_attribute=174&qty=1&setCountry=0&setCurrency=1" } }, { "@type": "Offer", "id_product": 95, "id_product_attribute": 175, "is_default": false, "sku": "214\/22152-395", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22152-holger-krupke-95.html", "image": "https:\/\/cdn1.musiccraft-instruments.com\/1-large_default\/viola-22152-holger-krupke.webp", "attributes": [ { "group_id": 10, "group_name": "Size", "value": "39,50 cm" } ], "attribute_summary": "Size: 39,50 cm", "price": { "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 10000.00, "tax_included": 11900.00, "without_reduction_tax_excluded": 10000.00, "without_reduction_tax_included": 11900.00, "value_added_tax_included": true }, "availability": "https://schema.org/InStock", "quantity": 5, "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=95&id_product_attribute=175&qty=1&setCountry=0&setCurrency=1" } }, { "@type": "Offer", "id_product": 95, "id_product_attribute": 176, "is_default": false, "sku": "214\/22152-400", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22152-holger-krupke-95.html", "image": "https:\/\/cdn1.musiccraft-instruments.com\/1-large_default\/viola-22152-holger-krupke.webp", "attributes": [ { "group_id": 10, "group_name": "Size", "value": "40,00 cm" } ], "attribute_summary": "Size: 40,00 cm", "price": { "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 10000.00, "tax_included": 11900.00, "without_reduction_tax_excluded": 10000.00, "without_reduction_tax_included": 11900.00, "value_added_tax_included": true }, "availability": "https://schema.org/InStock", "quantity": 5, "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=95&id_product_attribute=176&qty=1&setCountry=0&setCurrency=1" } }, { "@type": "Offer", "id_product": 95, "id_product_attribute": 177, "is_default": false, "sku": "214\/22152-405", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22152-holger-krupke-95.html", "image": "https:\/\/cdn1.musiccraft-instruments.com\/1-large_default\/viola-22152-holger-krupke.webp", "attributes": [ { "group_id": 10, "group_name": "Size", "value": "40,50 cm" } ], "attribute_summary": "Size: 40,50 cm", "price": { "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 10000.00, "tax_included": 11900.00, "without_reduction_tax_excluded": 10000.00, "without_reduction_tax_included": 11900.00, "value_added_tax_included": true }, "availability": "https://schema.org/InStock", "quantity": 5, "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=95&id_product_attribute=177&qty=1&setCountry=0&setCurrency=1" } }, { "@type": "Offer", "id_product": 95, "id_product_attribute": 178, "is_default": false, "sku": "214\/22152-410", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22152-holger-krupke-95.html", "image": "https:\/\/cdn1.musiccraft-instruments.com\/1-large_default\/viola-22152-holger-krupke.webp", "attributes": [ { "group_id": 10, "group_name": "Size", "value": "41,00 cm" } ], "attribute_summary": "Size: 41,00 cm", "price": { "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 10000.00, "tax_included": 11900.00, "without_reduction_tax_excluded": 10000.00, "without_reduction_tax_included": 11900.00, "value_added_tax_included": true }, "availability": "https://schema.org/InStock", "quantity": 5, "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=95&id_product_attribute=178&qty=1&setCountry=0&setCurrency=1" } }, { "@type": "Offer", "id_product": 95, "id_product_attribute": 179, "is_default": false, "sku": "214\/22152-415", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22152-holger-krupke-95.html", "image": "https:\/\/cdn1.musiccraft-instruments.com\/1-large_default\/viola-22152-holger-krupke.webp", "attributes": [ { "group_id": 10, "group_name": "Size", "value": "41,50 cm" } ], "attribute_summary": "Size: 41,50 cm", "price": { "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 10000.00, "tax_included": 11900.00, "without_reduction_tax_excluded": 10000.00, "without_reduction_tax_included": 11900.00, "value_added_tax_included": true }, "availability": "https://schema.org/InStock", "quantity": 5, "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=95&id_product_attribute=179&qty=1&setCountry=0&setCurrency=1" } }, { "@type": "Offer", "id_product": 95, "id_product_attribute": 180, "is_default": false, "sku": "214\/22152-420", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/viola-22152-holger-krupke-95.html", "image": "https:\/\/cdn1.musiccraft-instruments.com\/1-large_default\/viola-22152-holger-krupke.webp", "attributes": [ { "group_id": 10, "group_name": "Size", "value": "42,00 cm" } ], "attribute_summary": "Size: 42,00 cm", "price": { "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 10000.00, "tax_included": 11900.00, "without_reduction_tax_excluded": 10000.00, "without_reduction_tax_included": 11900.00, "value_added_tax_included": true }, "availability": "https://schema.org/InStock", "quantity": 5, "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=95&id_product_attribute=180&qty=1&setCountry=0&setCurrency=1" } } ], "pricing": { "scope": "default_variant", "default_id_product_attribute": 172, "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "use_taxes": true, "show_taxes": true, "price_tax_included": 11900.00, "price_tax_excluded": 10000.00, "price_without_reduction": 10000.00, "reduction_percent": 0, "reduction_price": 0 }, "availability": { "status": "https://schema.org/InStock", "orderable": true, "available_for_order": true, "show_price": true, "quantity": 45, "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." } } } }