# Notaly > Notaly is a self-service KSeF API and e-invoicing API for Poland — for small SaaS companies and SMEs invoicing in Europe. You send JSON via POST /invoices; Notaly generates the FA(3) XML, validates it against the official XSD, submits it to KSeF and returns the status and UPO. ## What it is - KSeF: Poland's national e-invoicing system (Ministry of Finance). - FA(3): current version of the XML schema (XSD) for KSeF invoices. - UPO: official proof of receipt issued by KSeF when the invoice is accepted. - Current state: end-to-end flow working in the KSeF TEST environment; production not yet enabled. ## What Notaly is NOT - Not a Peppol Access Point (resells a certified partner when Peppol arrives). - Not an accounting service; does not calculate taxes. ## API - POST /invoices: creates and submits an invoice (API-key auth via Authorization: Bearer). - GET /invoices/{id}: status (draft → submitted → accepted | rejected), KSeF number and UPO. While KSeF processes the submission internally, the invoice remains submitted. - Status webhooks signed with HMAC. ## Pricing (launch) - Sandbox: free. - Starter: €49/month, up to 200 invoices/month. - Scale: €199/month, up to 1,000 invoices/month. - Enterprise: custom. ## Links - Home and FAQ: https://getnotaly.com/ - Polish version: https://getnotaly.com/pl/ - Sitemap: https://getnotaly.com/sitemap.xml