{"id":54996,"library":"cats-effect-3","title":"Cats Effect 3","description":"Cats Effect is a purely functional runtime system for Scala, providing abstractions for asynchronous and concurrent programming.","status":"active","version":"3.7.0","language":"java","source_language":null,"source_url":"https://github.com/typelevel/cats-effect","tags":["cats","effect","functional","scala","concurrency"],"install":[{"cmd":"<dependency>\n  <groupId>org.typelevel</groupId>\n  <artifactId>cats-effect_3</artifactId>\n  <version>3.7.0</version>\n</dependency>","lang":"xml","label":"Maven"},{"cmd":"implementation 'org.typelevel:cats-effect_3:3.7.0'","lang":"groovy","label":"Gradle"}],"dependencies":[],"imports":[{"symbol":"IO","correct":"cats.effect.IO"}],"quickstart":{"code":"import cats.effect.IO\n\nobject Example extends IOApp {\n  def run(args: List[String]): IO[ExitCode] =\n    IO.println(\"Hello, World!\") *> IO.pure(ExitCode.Success)\n}","lang":"scala","description":"Shows a simple Cats Effect IOApp that prints a message."},"warnings":[],"env_vars":null,"search_vec":"'3':3 'abstract':15 'asynchron':17 'cat':1,4,21 'concurr':19,25 'effect':2,5,22 'function':9,23 'program':20 'provid':14 'pure':8 'runtim':10 'scala':13,24 'system':11","created_at":"2026-06-15T09:32:19.827757+00:00","updated_at":"2026-06-15T09:32:19.827757+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_3/","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":"2026-06-15","next_check":"2026-12-12","install_tag":null}}