lysine-dev/retrofit

A type-safe HTTP client for Android and the JVM

43,936

stars

2,675

commits

Java

primary language

Sep 9, 2026

updated

lysine.dev/retrofit/
android
java
Browse cluster: Kotlin/Java Android Development Libraries

README

Retrofit

A type-safe HTTP client for Android and Java.

For more information please see the website.

Download

Download the latest JAR or grab from Maven central at the coordinates com.squareup.retrofit2:retrofit:3.0.0.

Snapshots of the development version are available in Sonatype's snapshots repository.

Retrofit requires at minimum Java 8+ or Android API 21+.

R8 / ProGuard

If you are using R8 the shrinking and obfuscation rules are included automatically.

ProGuard users must manually add the options from retrofit2.pro. You might also need rules for OkHttp which is a dependency of this library.

License

Copyright 2013 Square, Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Contributors

(top 30 of 163)

JakeWharton

1,395 commits

renovate[bot]

522 commits

swankjesse

287 commits

pforhan

48 commits

lysine-dev/retrofit

A type-safe HTTP client for Android and the JVM

43,936

stars

2,675

commits

Java

primary language

Sep 9, 2026

updated

lysine.dev/retrofit/
android
java
Browse cluster: Kotlin/Java Android Development Libraries

README

Retrofit

A type-safe HTTP client for Android and Java.

For more information please see the website.

Download

Download the latest JAR or grab from Maven central at the coordinates com.squareup.retrofit2:retrofit:3.0.0.

Snapshots of the development version are available in Sonatype's snapshots repository.

Retrofit requires at minimum Java 8+ or Android API 21+.

R8 / ProGuard

If you are using R8 the shrinking and obfuscation rules are included automatically.

ProGuard users must manually add the options from retrofit2.pro. You might also need rules for OkHttp which is a dependency of this library.

License

Copyright 2013 Square, Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Contributors

(top 30 of 163)

JakeWharton

1,395 commits

renovate[bot]

522 commits

swankjesse

287 commits

pforhan

48 commits

Languages

Java

96.3%

Kotlin

3.7%