{ "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": 153 }, "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=153&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=153&setCountry=1&setCurrency=1", "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=153&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\/violin-endpin-various-shaft-sizes-153.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\/violin-endpin-various-shaft-sizes-153.html#product", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/violin-endpin-various-shaft-sizes-153.html", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=153&setCountry=1&setCurrency=1", "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=153&setCountry=1&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/en\/p\/violin-endpin-various-shaft-sizes-153.html" }, "id_product": 153, "name": "Violin Endpin \u2013 Various Shaft Sizes", "description": "Violin endpin available in different shaft sizes for reliable support of tailpiece and tailgut.", "full_description": "Even the smallest parts influence how an instrument feels. A properly fitted endpin provides stable tension, reliable support and dependable handling during everyday playing. Exactly what musicians need \u2014 without compromise. This violin endpin is available in different shaft sizes and is ideal for repairs, replacements or professional instrument making. Built for instruments that are meant to be played. Not just tuned.", "additional_text": "Endpin for violin \n Available in different shaft sizes: small, medium and large \n Reliable support for tailpiece and tailgut \n Suitable for repair and instrument making \n Classic construction for string instruments", "sku": "834\/21", "mpn": "834\/21", "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": 81, "name": "End Knobs", "link_rewrite": "end-knobs", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=81&setCountry=1&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/en\/end-knobs-81" } }, "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": 1, "name": "Product declaration", "value": "Utensils" }, { "id_feature": 1, "id_feature_value": 150, "name": "Product declaration", "value": "Spare parts" }, { "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": 28, "id_feature_value": 332, "name": "Components", "value": "End buttons" }, { "id_feature": 2, "id_feature_value": 502, "name": "Badges", "value": "Different variants" }, { "id_feature": 18, "id_feature_value": 358, "name": "Core material", "value": "Ebony" } ], "agent_faqs": [ ], "images": [ { "id_image": 2382, "cover": true, "position": 1, "legend": "Violin Endpin \u2013 Various Shaft Sizes", "url": "https:\/\/cdn2.musiccraft-instruments.com\/2382-large_default\/violin-endpin-various-shaft-sizes.webp" } ], "shipping_weight": { "@type": "QuantitativeValue", "value": 0.02, "unitCode": "KGM", "note": "Shipping weight, not product content." }, "variant_model": { "has_variants": true, "variant_count": 2, "default_id_product_attribute": 472 }, "offers": { "@type": "Offer", "offer_scope": "default_variant", "id_product": 153, "id_product_attribute": 472, "url": "https:\/\/musiccraft-instruments.com\/en\/p\/violin-endpin-various-shaft-sizes-153.html", "price": 5.20, "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": 5.20, "priceCurrency": "EUR", "valueAddedTaxIncluded": true } }, "variant_offers": [ { "@type": "Offer", "id_product": 153, "id_product_attribute": 472, "is_default": true, "sku": "834\/21-SW", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/violin-endpin-various-shaft-sizes-153.html", "image": "https:\/\/cdn2.musiccraft-instruments.com\/1-large_default\/violin-endpin-various-shaft-sizes.webp", "attributes": [ { "group_id": 12, "group_name": "Shaft thickness", "value": "Soft (Weak)" } ], "attribute_summary": "Shaft thickness: Soft (Weak)", "price": { "delivery_country": "DE", "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 4.37, "tax_included": 5.20, "without_reduction_tax_excluded": 4.37, "without_reduction_tax_included": 5.20, "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=153&id_product_attribute=472&qty=1&setCountry=1&setCurrency=1" } }, { "@type": "Offer", "id_product": 153, "id_product_attribute": 473, "is_default": false, "sku": "834\/21-MI", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/violin-endpin-various-shaft-sizes-153.html", "image": "https:\/\/cdn2.musiccraft-instruments.com\/1-large_default\/violin-endpin-various-shaft-sizes.webp", "attributes": [ { "group_id": 12, "group_name": "Shaft thickness", "value": "medium" } ], "attribute_summary": "Shaft thickness: medium", "price": { "delivery_country": "DE", "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 4.37, "tax_included": 5.20, "without_reduction_tax_excluded": 4.37, "without_reduction_tax_included": 5.20, "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=153&id_product_attribute=473&qty=1&setCountry=1&setCurrency=1" } } ], "pricing": { "scope": "default_variant", "default_id_product_attribute": 472, "delivery_country": "DE", "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "use_taxes": true, "show_taxes": true, "price_tax_included": 5.20, "price_tax_excluded": 4.37, "price_without_reduction": 4.37, "reduction_percent": 0, "reduction_price": 0 }, "availability": { "status": "https://schema.org/InStock", "orderable": true, "available_for_order": true, "show_price": true, "quantity": 200, "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." } } } }