{ "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": 89 }, "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=89&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=89&setCountry=0&setCurrency=1", "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=89&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\/pochette-5000-ute-kaestner-89.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\/pochette-5000-ute-kaestner-89.html#product", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/pochette-5000-ute-kaestner-89.html", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=89&setCountry=0&setCurrency=1", "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=89&setCountry=0&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/en\/p\/pochette-5000-ute-kaestner-89.html" }, "id_product": 89, "name": "Pochette 5000 \u2013 Music from another time", "description": "Exceptional handcrafted pochette by Ute K\u00e4stner with artistic details, historical character and a truly unique tonal identity.", "full_description": "Not every instrument wants to feel modern. Some carry history inside them. The Pochette 5000 by Ute K\u00e4stner feels like an echo from another musical world. With its extraordinary outline, artistic ornamentation and delicate construction, this handcrafted pochette combines historical elegance with true musical personality. It is not an ordinary string instrument \u2014 it is a living piece of instrument-making craftsmanship. The fine details immediately reveal the level of artistry and dedication behind this instrument: the decorative soundboard rosette, purfling inlays on top and back, the ornamented pegbox and the carved cupid or faun head create a truly remarkable appearance. This instrument doesn\u2019t try to be loud. But it stays in your mind. The Pochette 5000 doesn\u2019t simply play music. It creates atmosphere. The ebony fittings and traditional gut strings provide an authentic playing feel and a tonal character full of warmth, lightness and historical charm. Especially for early music, historical performance practice or as a rare collector\u2019s instrument, this pochette develops a unique presence of its own. Available in different tunings and also as a three-string model, the instrument offers additional tonal variety and historical authenticity. With a body size of 475 mm and a string length of 255 mm, the pochette remains compact while still sounding surprisingly expressive. The instrument comes complete with matching bow and case. For people who don\u2019t just want to play music. But experience it. Rare. Artistic. Real. Handcrafted by Ute K\u00e4stner. Traditional instrument-making craftsmanship with historical character.", "additional_text": "Handcrafted pochette by Ute K\u00e4stner \n Complete with bow and case \n Exceptional historical body shape \n Decorative soundboard rosette \n Purfling inlays on top and back \n Ornamented pegbox \n Carved cupid or faun head \n Premium ebony fittings \n Traditional gut strings \n Body size: 475 mm \n String length: 255 mm \n Tuning: g d a\u2018 e\u2018\u2018 or c\u2018 g\u2018 d\u2018\u2018 a\u2018\u2018 \n Also available as a three-string model \n Warm and historical tonal character \n Ideal for historical performance practice and collectors \n Traditional craftsmanship \n Made in Germany", "sku": "215\/5001", "mpn": "215\/5001", "ean13": "", "upc": "", "brand": { "@type": "Brand", "name": "Ute K\u00e4stner Geigenbaumeisterin", "url": "https:\/\/musiccraft-instruments.com\/en\/ute-kastner-geigenbaumeisterin_16" }, "manufacturer": { "@type": "Organization", "id_manufacturer": 16, "name": "Ute K\u00e4stner Geigenbaumeisterin", "url": "https:\/\/musiccraft-instruments.com\/en\/ute-kastner-geigenbaumeisterin_16" }, "supplier": { "@type": "Organization", "id_supplier": 1, "name": "Migma e.G." }, "main_category": { "id_category": 25, "name": "Rare Instruments", "link_rewrite": "rare-instruments", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=25&setCountry=0&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/en\/rare-instruments-25" } }, "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": 169, "name": "Product declaration", "value": "Set" }, { "id_feature": 15, "id_feature_value": 130, "name": "Taxation", "value": "Standard Rate" }, { "id_feature": 9, "id_feature_value": 148, "name": "Instrument", "value": "Violin" }, { "id_feature": 2, "id_feature_value": 326, "name": "Badges", "value": "Exotic" }, { "id_feature": 2, "id_feature_value": 7, "name": "Badges", "value": "Pack" } ], "agent_faqs": [ ], "images": [ { "id_image": 2162, "cover": true, "position": 1, "legend": "Pochette 5000 \u2013 Music from another time", "url": "https:\/\/cdn2.musiccraft-instruments.com\/2162-large_default\/pochette-5000-ute-kaestner.webp" }, { "id_image": 2152, "cover": false, "position": 2, "legend": "Pochette 5000 \u2013 Music from another time", "url": "https:\/\/cdn3.musiccraft-instruments.com\/2152-large_default\/pochette-5000-ute-kaestner.webp" }, { "id_image": 2156, "cover": false, "position": 3, "legend": "Pochette 5000 \u2013 Music from another time", "url": "https:\/\/cdn1.musiccraft-instruments.com\/2156-large_default\/pochette-5000-ute-kaestner.webp" }, { "id_image": 2157, "cover": false, "position": 4, "legend": "Pochette 5000 \u2013 Music from another time", "url": "https:\/\/cdn2.musiccraft-instruments.com\/2157-large_default\/pochette-5000-ute-kaestner.webp" }, { "id_image": 2158, "cover": false, "position": 5, "legend": "Pochette 5000 \u2013 Music from another time", "url": "https:\/\/cdn1.musiccraft-instruments.com\/2158-large_default\/pochette-5000-ute-kaestner.webp" }, { "id_image": 2159, "cover": false, "position": 6, "legend": "Pochette 5000 \u2013 Music from another time", "url": "https:\/\/cdn2.musiccraft-instruments.com\/2159-large_default\/pochette-5000-ute-kaestner.webp" }, { "id_image": 2160, "cover": false, "position": 7, "legend": "Pochette 5000 \u2013 Music from another time", "url": "https:\/\/cdn2.musiccraft-instruments.com\/2160-large_default\/pochette-5000-ute-kaestner.webp" }, { "id_image": 2161, "cover": false, "position": 8, "legend": "Pochette 5000 \u2013 Music from another time", "url": "https:\/\/cdn1.musiccraft-instruments.com\/2161-large_default\/pochette-5000-ute-kaestner.webp" }, { "id_image": 2153, "cover": false, "position": 9, "legend": "Pochette 5000 \u2013 Music from another time", "url": "https:\/\/cdn2.musiccraft-instruments.com\/2153-large_default\/pochette-5000-ute-kaestner.webp" }, { "id_image": 2155, "cover": false, "position": 10, "legend": "Pochette 5000 \u2013 Music from another time", "url": "https:\/\/cdn3.musiccraft-instruments.com\/2155-large_default\/pochette-5000-ute-kaestner.webp" }, { "id_image": 2154, "cover": false, "position": 11, "legend": "Pochette 5000 \u2013 Music from another time", "url": "https:\/\/cdn2.musiccraft-instruments.com\/2154-large_default\/pochette-5000-ute-kaestner.webp" } ], "shipping_weight": { "@type": "QuantitativeValue", "value": 3, "unitCode": "KGM", "note": "Shipping weight, not product content." }, "variant_model": { "has_variants": false, "variant_count": 0, "default_id_product_attribute": 0 }, "offers": { "@type": "Offer", "offer_scope": "product", "id_product": 89, "id_product_attribute": 0, "url": "https:\/\/musiccraft-instruments.com\/en\/p\/pochette-5000-ute-kaestner-89.html", "price": 2800.00, "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": 2800.00, "priceCurrency": "EUR", "valueAddedTaxIncluded": true } , "action": { "type": "add_to_cart", "method": "GET", "enabled": true, "quantity": 1, "url": "https:\/\/musiccraft-instruments.com\/en\/shopping-cart?add=1&id_product=89&qty=1&setCountry=0&setCurrency=1" } }, "variant_offers": [ ], "pricing": { "scope": "product", "default_id_product_attribute": 0, "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "use_taxes": true, "show_taxes": true, "price_tax_included": 2800.00, "price_tax_excluded": 2352.94, "price_without_reduction": 2352.94, "reduction_percent": 0, "reduction_price": 0 }, "availability": { "status": "https://schema.org/InStock", "orderable": true, "available_for_order": true, "show_price": true, "quantity": 10, "minimal_quantity": 1, "variant_stock_available": false, "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." } } } }