{"id":69201,"library":"cats-effect-kernel-2-13","title":"Cats Effect Kernel","description":"Cats Effect Kernel provides the core typeclasses for effectful computations in Scala, including IO and Sync.","status":"active","version":"3.7.0","language":"java","source_language":null,"source_url":"https://github.com/typelevel/cats-effect","tags":["cats","effect","functional","scala","io"],"install":[{"cmd":"<dependency>\n  <groupId>org.typelevel</groupId>\n  <artifactId>cats-effect-kernel_2.13</artifactId>\n  <version>3.7.0</version>\n</dependency>","lang":"xml","label":"Maven"},{"cmd":"implementation 'org.typelevel:cats-effect-kernel_2.13:3.7.0'","lang":"groovy","label":"Gradle"}],"dependencies":[],"imports":[{"symbol":"IO","correct":"cats.effect.IO"}],"quickstart":{"code":"import cats.effect.IO\n\nval program: IO[Unit] = IO.println(\"Hello, Cats Effect!\")","lang":"scala","description":"Create a simple IO program that prints a message."},"warnings":[{"fix":"Use the artifact with the appropriate Scala version suffix (e.g., _2.13, _3).","message":"This artifact is for Scala 2.13; ensure your project uses the correct Scala version.","severity":"breaking","affected_versions":">=3.0"}],"env_vars":null,"search_vec":"'cat':1,4,20 'comput':13 'core':9 'effect':2,5,12,21 'function':22 'includ':16 'io':17,24 'kernel':3,6 'provid':7 'scala':15,23 'sync':19 'typeclass':10","created_at":"2026-06-17T17:59:12.702708+00:00","updated_at":"2026-06-17T17:59:12.702708+00:00","problems":[],"ecosystem":"maven","meta_description":null,"install_score":null,"quickstart_score":null,"quickstart_tag":null,"pypi_latest":null,"cli_name":null,"cli_version":null,"type":"library","homepage":"https://github.com/typelevel/cats-effect","github":"https://github.com/typelevel/cats-effect","docs":"https://appdoc.app/artifact/org.typelevel/cats-effect-kernel_2.13/","changelog":null,"pypi":null,"npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["utility"],"base_url":null,"auth_type":null,"provenance":{"verified_status":null,"verified_at":null,"last_verified":"2026-06-17","next_check":"2026-12-14","install_tag":null}}