{"product_id":"automate-ksef-invoices-from-sellf-purchases-with-n8n-workflow","title":"Automate KSeF Invoices from Sellf Purchases with n8n Workflow","description":"\u003ch3\u003eStreamline Your Invoice Automation with n8n: Automate KSeF Invoices from Sellf Purchases\u003c\/h3\u003e\n\n\u003cp\u003eTake the hassle out of invoice processing and enhance your workflow efficiency with the perfect automation tool for SaaS operators and n8n enthusiasts. This n8n workflow seamlessly manages invoice generation by processing Sellf purchase webhooks and submitting accurate, KSeF-ready invoices through a self-hosted KSeF Gateway, ensuring compliance and convenience.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this Workflow Does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eReceives a POST webhook from Sellf containing the raw request body and signature header.\u003c\/li\u003e\n  \u003cli\u003eSecurely verifies the webhook signature using HMAC-SHA256, instantly rejecting unauthorized requests with a 401 response.\u003c\/li\u003e\n  \u003cli\u003eProcesses valid requests in the background, ensuring prompt response time with a JSON OK reply.\u003c\/li\u003e\n  \u003cli\u003eFilters the webhook event to identify purchase completions and extracts essential customer, order, and invoice data.\u003c\/li\u003e\n  \u003cli\u003eConditional invoice building: Only proceeds when an invoice request is accompanied by a valid NIP.\u003c\/li\u003e\n  \u003cli\u003eGenerates a KSeF-compatible invoice payload with seller details before posting to your designated KSeF Gateway endpoint.\u003c\/li\u003e\n  \u003cli\u003eLogs the outcome by capturing the unique KSeF number or noting error feedback if submission fails.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse Cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSaaS companies integrating seamless invoice processing for enhanced customer satisfaction and compliance.\u003c\/li\u003e\n  \u003cli\u003eAutomation engineers looking to reduce manual intervention in financial operations.\u003c\/li\u003e\n  \u003cli\u003eBusinesses leveraging n8n to streamline backend processes and ensure accuracy in financial records.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIntegration with Sellf and an array of n8n nodes including: webhook, if, set, code, switch, and sticky note for comprehensive workflow control.\u003c\/li\u003e\n  \u003cli\u003eRequires deployment of a self-hosted KSeF Gateway for invoice submissions.\u003c\/li\u003e\n  \u003cli\u003eConfigurable elements include the webhook signing secret, KSeF Gateway base URL, seller details, and default VAT rate.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"N8N Commerce","offers":[{"title":"Default Title","offer_id":45633731231923,"sku":"N8N-16768","price":66.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6279\/6723\/files\/erMPFADTdzc4njYaa_cvr_af8dce7d8ecb4756939208d6047c7e57.jpg?v=1782983389","url":"https:\/\/buyflowscripts.com\/products\/automate-ksef-invoices-from-sellf-purchases-with-n8n-workflow","provider":"N8N Commerce","version":"1.0","type":"link"}