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OpenAPITools/openapi-generator

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

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Stars
 (26,243 stars)
Forks
 (7,516 forks)
Indexed issues
 (55 indexed issues)
open beginner issues
 (53 open beginner issues)
Latest indexed
Aug 14, 2026
Last GitHub push
May 14, 2026
License
Apache License 2.0
Contributing guide
Contributing guide
Code of conduct
Code of conduct
Dominant language
Java
PR merge metrics
 (Avg merge 9d 1h) (123 merged PRs in 30d)
Beginner labels
help wantedhacktoberfestgood first issue

Issues

53 open indexed issues

Open
[PHP] Yii 2 support
Enhancement: New generatorHacktoberfestServer: PHPhelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

OpenAPITools / openapi-generator · #974 · Sep 5, 2018 · Java · 26,243 stars

3 comments0 reactions0 assignees
Open
[Java] Add proper support for allOf anyOf oneOf
Client: JavaEnhancement: FeatureFeature: Composition / InheritanceHacktoberfestServer: Javahelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

OpenAPITools / openapi-generator · #634 · Jul 24, 2018 · Java · 26,243 stars

21 comments17 reactions0 assignees
Open
[New Generator] Lisp client generator
Client: LispEnhancement: New generatorHacktoberfesthelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

OpenAPITools / openapi-generator · #533 · Jul 11, 2018 · Java · 26,243 stars

1 comment0 reactions0 assignees
Open
[Server] support interface and implementation classes for API controllers
HacktoberfestServer: AdaServer: C++Server: C-SharpServer: CeylonServer: EiffelServer: ElixirServer: ErlangServer: GoServer: HaskellServer: JavaServer: KotlinServer: NodejsServer: PHPServer: PerlServer: PythonServer: RubyServer: ScalaServer: Springhelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

OpenAPITools / openapi-generator · #426 · Jul 1, 2018 · Java · 26,243 stars

11 comments20 reactions0 assignees
Open
HMAC Authentication Support
Feature: AuthenticationGeneral: SuggestionHacktoberfesthelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

OpenAPITools / openapi-generator · #399 · Jun 26, 2018 · Java · 26,243 stars

5 comments0 reactions0 assignees
Open
New Generator: VB.net, Visual Basic client
Client: VB/VB.netEnhancement: New generatorHacktoberfesthelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

OpenAPITools / openapi-generator · #293 · Jun 13, 2018 · Java · 26,243 stars

1 comment0 reactions0 assignees
Open
Vert.x Web Client & Server code generator
Enhancement: New generatorFeature: GeneratorHacktoberfesthelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

OpenAPITools / openapi-generator · #115 · May 20, 2018 · Java · 26,243 stars

1 comment0 reactions0 assignees
Open
Enum in array of array
Hacktoberfesthelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

OpenAPITools / openapi-generator · #105 · May 18, 2018 · Java · 26,243 stars

5 comments0 reactions0 assignees