{ "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": 14 }, "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=14&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=14&setCountry=1&setCurrency=1", "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=14&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\/optima-24k-gold-strings-custom-light-acoustic-guitar-strings-011050-14.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\/optima-24k-gold-strings-custom-light-acoustic-guitar-strings-011050-14.html#product", "url": "https:\/\/musiccraft-instruments.com\/en\/p\/optima-24k-gold-strings-custom-light-acoustic-guitar-strings-011050-14.html", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/product?id_product=14&setCountry=1&setCurrency=1", "contexts": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/contexts?resource=product&id_product=14&setCountry=1&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/en\/p\/optima-24k-gold-strings-custom-light-acoustic-guitar-strings-011050-14.html" }, "id_product": 14, "name": "OPTIMA 24K Gold Strings Set \u2013 Acoustic Guitar Strings Custom Light (.011\u2013.050)", "description": "24K gold-plated acoustic guitar strings built for durability and tone. The OPTIMA Custom Light set (.011\u2013.050) offers smooth playability with a clear, warm sound \u2013 perfect for fingerstyle and strumming. For players who want more than just strings.", "full_description": "Acoustic playing is raw. Direct. Honest. Unfiltered. And it needs strings that can keep up. The OPTIMA 24K Gold Strings Custom Light set isn\u2019t about compromise. It\u2019s built for players who care about how their sound actually feels. Every string is coated with real 24K gold . No corrosion. No tarnishing. No constant replacing. What stays is your tone. The plain strings give you clarity and definition. The wound strings bring depth, warmth, and stability thanks to their hex core construction. Together, they create something you can\u2019t fake: A clear, brilliant sound with real character \u2013 the \u201cSound of Gold.\u201d The Custom Light gauge (.011\u2013.050) gives you control without resistance: Easy to play, but with enough body to carry your sound. Fingerstyle, strumming, or anything in between \u2013 these strings respond to you. Not the other way around. Also a great choice for players with nickel allergies, as the gold coating fully protects the surface. OPTIMA brings over 100 years of experience into every set. But this isn\u2019t about history. It\u2019s about what happens when you play.", "additional_text": "Single Strings in this Set \n \n .011 single string \n .014 single string \n .023w single string \n .032w single string \n .040w single string \n .050w single string", "sku": "862\/1747.CL", "mpn": "862\/1747.CL", "ean13": "", "upc": "", "brand": { "@type": "Brand", "name": "OPTIMA Musiksaiten GmbH", "url": "https:\/\/musiccraft-instruments.com\/en\/optima-musiksaiten-gmbh_10" }, "manufacturer": { "@type": "Organization", "id_manufacturer": 10, "name": "OPTIMA Musiksaiten GmbH", "url": "https:\/\/musiccraft-instruments.com\/en\/optima-musiksaiten-gmbh_10" }, "supplier": { "@type": "Organization", "id_supplier": 1, "name": "Migma e.G." }, "main_category": { "id_category": 47, "name": "Guitar Strings", "link_rewrite": "guitar-strings", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/en\/mcc\/mcc_agent\/category?id_category=47&setCountry=1&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/en\/guitar-strings-47" } }, "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": 151, "name": "Product declaration", "value": "Consumables" }, { "id_feature": 1, "id_feature_value": 1, "name": "Product declaration", "value": "Utensils" }, { "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": 44, "name": "Instrument", "value": "Guitar" }, { "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": 21, "id_feature_value": 202, "name": "String gauge", "value": "Custom Light" }, { "id_feature": 24, "id_feature_value": 197, "name": "Strength", "value": ".014" }, { "id_feature": 24, "id_feature_value": 199, "name": "Strength", "value": ".032" }, { "id_feature": 24, "id_feature_value": 201, "name": "Strength", "value": ".050" }, { "id_feature": 24, "id_feature_value": 196, "name": "Strength", "value": ".011" }, { "id_feature": 24, "id_feature_value": 198, "name": "Strength", "value": ".023w" }, { "id_feature": 24, "id_feature_value": 200, "name": "Strength", "value": ".040" } ], "agent_faqs": [ ], "images": [ { "id_image": 1970, "cover": true, "position": 1, "legend": "OPTIMA 24K Gold Strings Custom Light \u2013 Acoustic Guitar Strings (.011\u2013.050)", "url": "https:\/\/cdn3.musiccraft-instruments.com\/1970-large_default\/optima-24k-gold-strings-custom-light-acoustic-guitar-strings-011050.webp" }, { "id_image": 1969, "cover": false, "position": 2, "legend": "OPTIMA 24K Gold Strings Custom Light \u2013 Acoustic Guitar Strings (.011\u2013.050)", "url": "https:\/\/cdn3.musiccraft-instruments.com\/1969-large_default\/optima-24k-gold-strings-custom-light-acoustic-guitar-strings-011050.webp" } ], "shipping_weight": { "@type": "QuantitativeValue", "value": 0.07, "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": 14, "id_product_attribute": 0, "url": "https:\/\/musiccraft-instruments.com\/en\/p\/optima-24k-gold-strings-custom-light-acoustic-guitar-strings-011050-14.html", "price": 31.90, "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": 31.90, "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=14&qty=1&setCountry=1&setCurrency=1" } }, "variant_offers": [ ], "pricing": { "scope": "product", "default_id_product_attribute": 0, "delivery_country": "DE", "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "use_taxes": true, "show_taxes": true, "price_tax_included": 31.90, "price_tax_excluded": 26.81, "price_without_reduction": 26.81, "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." } } } }