{"id":941,"date":"2025-06-19T00:01:25","date_gmt":"2025-06-18T22:01:25","guid":{"rendered":"https:\/\/ksefapi.pl\/?p=941"},"modified":"2025-06-28T00:01:03","modified_gmt":"2025-06-27T22:01:03","slug":"ksef-java-net-biblioteki","status":"publish","type":"post","link":"https:\/\/ksefapi.pl\/en\/ksef-java-net-biblioteki\/","title":{"rendered":"KSeF \u2013 libraries for JAVA and .NET"},"content":{"rendered":"<h1 style=\"text-align: center;\">National e-Invoice System (<a href=\"https:\/\/ksef.mf.gov.pl\/\">KSeF<\/a>)<br \/>\nnew integration libraries for<br \/>\nJAVA and .NET<\/h1>\n<p><a href=\"https:\/\/ksefapi.pl\/wp-content\/uploads\/2025\/06\/ksef-java-net_mini.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ksefapi.pl\/wp-content\/uploads\/2025\/06\/ksef-java-net_mini-300x218.jpg\" alt=\"Biblioteki KSeF dla JAVA i .NET\" width=\"300\" height=\"218\" class=\"alignleft wp-image-945 size-medium\" srcset=\"https:\/\/ksefapi.pl\/wp-content\/uploads\/2025\/06\/ksef-java-net_mini-300x218.jpg 300w, https:\/\/ksefapi.pl\/wp-content\/uploads\/2025\/06\/ksef-java-net_mini-16x12.jpg 16w, https:\/\/ksefapi.pl\/wp-content\/uploads\/2025\/06\/ksef-java-net_mini.jpg 680w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>We are very pleased to announce that we have released two more client libraries for the languages <a href=\"\/en\/download\/ksef-java-biblioteka-integracyjna\/\"><strong>JAVA<\/strong><\/a> and <a href=\"\/en\/download\/ksef-net-c-biblioteka-integracyjna\/\"><strong>.NET<\/strong><\/a>, which facilitate and accelerate the integration of systems with the National e-Invoice System. These are the next tools after the interface <strong><a href=\"https:\/\/ksefapi.pl\/en\/api-test\/swagger-ui\/index.html\/#\/\">KSeF REST API<\/a><\/strong> and <strong><a href=\"\/en\/download\/ksef-biblioteka-php\/\">PHP library<\/a><\/strong>that we make available to our customers.<\/p>\n<p>Of course, for the purposes of smooth integration, we have also prepared a detailed <a href=\"\/en\/rest-ksef-api-dokumentacja\/\"><strong>Technical Documentation<\/strong><\/a> together with a description of the business processes within which the use of individual operations is described. We encourage you to read the prepared description and diagrams.<\/p>\n<p>We would also like to inform you that we are also starting intensive work on adapting our API interface to the changes that are to come into force in the near future. More about all these changes related to the adoption by the Council of Ministers on June 17, 2025. <a href=\"https:\/\/legislacja.rcl.gov.pl\/projekt\/12391205\/katalog\/13092660#13092660\">Draft Act on KSeF<\/a>, you can read in our other article, in which we have included an analysis of all the most important issues: &quot;<a href=\"\/en\/obowiazkowy-ksef-w-2026-kompleksowy-przewodnik-po-wdrozeniu-prawnym-organizacyjnym-i-technicznym\/\">Mandatory KSeF in 2026: Comprehensive guide to legal, organizational and technical implementation<\/a>&#8221; .<\/p>\n<p>We hope you enjoy reading.<\/p>\n<p><em>The ksefapi.pl team<\/em><\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>National e-Invoice System (KSeF) New Integration Libraries for JAVA and .NET We are pleased to announce that we have released two more client libraries for JAVA and .NET, which simplify and accelerate system integration with the National e-Invoice System. These are the latest tools we have made available, following the KSeF REST API and the PHP library.<\/p>","protected":false},"author":2,"featured_media":945,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,11,10,36,6],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/posts\/941"}],"collection":[{"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/comments?post=941"}],"version-history":[{"count":5,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/posts\/941\/revisions"}],"predecessor-version":[{"id":959,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/posts\/941\/revisions\/959"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/media\/945"}],"wp:attachment":[{"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/media?parent=941"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/categories?post=941"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ksefapi.pl\/en\/wp-json\/wp\/v2\/tags?post=941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}