Automate WooCommerce to KSeF Invoicing with n8n Workflow

Streamline Your WooCommerce Invoicing with Seamless KSeF Integration

Elevate your e-commerce operations with our automated n8n workflow, designed to transform WooCommerce orders into KSeF invoices effortlessly. Skip consumer orders lacking a buyer NIP and submit eligible invoices directly to your self-hosted KSeF Gateway API — efficiently and accurately.

What this workflow does

• Receives WooCommerce order webhook requests, preserving the raw data for signature validation.
• Authenticates the `X-WC-Webhook-Signature` HMAC against your predefined webhook secret, rejecting any invalid submissions with a 401 response.
• Extracts buyer NIP from the WooCommerce order metadata and assembles the order details into a KSeF invoice payload, covering all necessary elements such as seller and buyer information, line items, VAT rates, and payment details.
• Efficiently recognizes consumer orders without a buyer NIP, responding instantly to WooCommerce with a success message, bypassing unnecessary processing.
• Dispatches the invoice payload via HTTP to your self-hosted KSeF Gateway endpoint, secured with an `X-Api-Key` header.
• Returns the resulting KSeF number to WooCommerce when available, or provides detailed error information from the gateway if issues arise.

Use cases

• Automation engineers looking to streamline invoicing processes within WooCommerce ecosystems.
• E-commerce operators aiming to reduce manual invoicing tasks and ensure compliance with Polish KSeF regulations.
• Organizations leveraging self-hosted n8n instances for bespoke financial transactions processing.

Technical details

• n8n Nodes Utilized: if, set, code, webhook, sticky note, HTTP request
• Setup Requirements: Deploy and configure a KSeF Gateway instance; update workflow configurations with relevant endpoint information; integrate WooCommerce with custom webhook targets and buyer NIP extraction fields.
• Intended Audience: n8n users, automation engineers, SaaS operators looking for specialized WooCommerce workflows.