https://universalcommerceprotocol.frNotes techniques bilingues sur le Universal Commerce Protocol.fr-FRWed, 12 Aug 2026 13:20:39 GMThttps://universalcommerceprotocol.fr/en/resources/shopify-ucp-catalog-mcp-webmcp/https://universalcommerceprotocol.fr/en/resources/shopify-ucp-catalog-mcp-webmcp/UCP, Catalog MCP, and WebMCP on Shopify: roles, execution surfaces, tools, and criteria for choosing an agentic architecture.Wed, 12 Aug 2026 00:00:00 GMTenhttps://universalcommerceprotocol.fr/ressources/shopify-ucp-catalog-mcp-webmcp/https://universalcommerceprotocol.fr/ressources/shopify-ucp-catalog-mcp-webmcp/UCP, Catalog MCP et WebMCP sur Shopify : rôles, surfaces, outils et critères pour choisir la bonne architecture agentique.Wed, 12 Aug 2026 00:00:00 GMTfrhttps://universalcommerceprotocol.fr/en/resources/agentic-payment-disputes/https://universalcommerceprotocol.fr/en/resources/agentic-payment-disputes/What signed mandates prove, what they do not assign, and the evidence a merchant should retain while liability rules are still settling.Mon, 10 Aug 2026 00:00:00 GMTenhttps://universalcommerceprotocol.fr/ressources/litiges-paiement-agentique/https://universalcommerceprotocol.fr/ressources/litiges-paiement-agentique/Mandats signés, responsabilité et litiges agentiques : les preuves qu'un marchand doit conserver pour défendre chaque transaction.Mon, 10 Aug 2026 00:00:00 GMTfrhttps://universalcommerceprotocol.fr/en/resources/measuring-agentic-commerce/https://universalcommerceprotocol.fr/en/resources/measuring-agentic-commerce/Why classic attribution undercounts AI agents, what GA4 actually captures, and the protocol signals a merchant should instrument server-side.Fri, 07 Aug 2026 00:00:00 GMTenhttps://universalcommerceprotocol.fr/ressources/mesurer-commerce-agentique/https://universalcommerceprotocol.fr/ressources/mesurer-commerce-agentique/Mesurer le commerce agentique : limites de GA4, attribution hors site et signaux protocolaires à instrumenter côté marchand.Fri, 07 Aug 2026 00:00:00 GMTfrhttps://universalcommerceprotocol.fr/en/resources/ai-agent-traffic/https://universalcommerceprotocol.fr/en/resources/ai-agent-traffic/Telling training crawlers, answer indexers and human-triggered agents apart, what robots.txt actually governs, and what it does not.Tue, 04 Aug 2026 00:00:00 GMTenhttps://universalcommerceprotocol.fr/ressources/trafic-agents-ia/https://universalcommerceprotocol.fr/ressources/trafic-agents-ia/Trafic des agents IA : distinguer crawlers, indexeurs et agents humains, puis comprendre ce que robots.txt gouverne réellement.Tue, 04 Aug 2026 00:00:00 GMTfrhttps://universalcommerceprotocol.fr/en/resources/ucp-payment-handlers/https://universalcommerceprotocol.fr/en/resources/ucp-payment-handlers/Why UCP declares processing specifications rather than providers, what a payment handler contains, and what it changes about choosing a PSP.Sat, 01 Aug 2026 00:00:00 GMTenhttps://universalcommerceprotocol.fr/ressources/payment-handlers-ucp/https://universalcommerceprotocol.fr/ressources/payment-handlers-ucp/Payment handlers UCP : contenu, négociation et différence entre spécification de traitement, instrument de paiement et prestataire PSP.Sat, 01 Aug 2026 00:00:00 GMTfrhttps://universalcommerceprotocol.fr/en/resources/well-known-ucp-manifest/https://universalcommerceprotocol.fr/en/resources/well-known-ucp-manifest/The real structure of the UCP discovery manifest: services, capabilities, payment_handlers, signing keys, version negotiation and error codes.Wed, 29 Jul 2026 00:00:00 GMTenhttps://universalcommerceprotocol.fr/ressources/manifeste-well-known-ucp/https://universalcommerceprotocol.fr/ressources/manifeste-well-known-ucp/Manifeste UCP champ par champ : services, capacités, payment_handlers, clés de signature, négociation de version et erreurs.Wed, 29 Jul 2026 00:00:00 GMTfr