swagger-api/swagger-codegen-generators

Stars: 299
Forks: 439
Open beginner issues: 0
Indexed issues: 224

Dominant language: Mustache
License: Apache-2.0
Last GitHub push: Aug 27, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

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224 open issues indexed

[Bug]: Python/pythonFlaskConnexion generators validate map keys instead of values for additionalProperties.enum Open

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

swagger-api/swagger-codegen-generators#1404 · Opened Apr 18, 2026
[JavaSpring] Should use requiredMode instead of deprecated required attribute of Schema class Open

Bug

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1402 · Opened Mar 16, 2026
[Bug]: Broken handling of primitve types in oneOf Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1391 · Opened Nov 18, 2025
[Bug]: Duplicated default headers in ApiClient for Java RestTemplate Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1389 · Opened Nov 12, 2025
Python generated code: Delete API Requests can be blocked in API Gateways when sends empty body Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

swagger-api/swagger-codegen-generators#1387 · Opened Nov 2, 2025
[Bug]: Bean validation doesn't work for numbers larger than Integer.MAX_VALUE Open

Bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

swagger-api/swagger-codegen-generators#1370 · 3 comments · 1 reaction · Opened Sep 17, 2025
mvn swagger-codegen:generate throws out of memory error for query parameter with allOff in OpenAPI spec file. Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1352 · 1 comment · Opened Jul 5, 2025
[python] python client returns a bad binary representation of string for text/plain responses Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1347 · Opened Jun 4, 2025
Wiki on adding a new generator could use some small edits Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1344 · Opened May 20, 2025
useBeanValidation option results in deprecated API usage Open

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

swagger-api/swagger-codegen-generators#1337 · Opened Mar 4, 2025
[typescript-angular] multiple `allOf` with `allOf` does not work Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1331 · Opened Dec 29, 2024
Regex string is not escaped when a property refers to a schema Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

swagger-api/swagger-codegen-generators#1327 · Opened Dec 12, 2024
JavaSpring codegen ignores per-field required setting Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

swagger-api/swagger-codegen-generators#1310 · Opened Aug 30, 2024
[ASPCORENET] The tostring method of the model doesn't render the base component Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

swagger-api/swagger-codegen-generators#1303 · Opened Aug 12, 2024
HTML clients have Apache 2.0 license URL as default Open

Difficulty 2/5 1-3 hours Newbie friendliness 64/100

swagger-api/swagger-codegen-generators#1298 · Opened Jul 22, 2024
[typescript] Incorrect `extends null<...>` declaration for map/dictionary-like schema definitions with `additionalProperties` Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1297 · 1 comment · Opened Jun 6, 2024
Generator fails on null enum choice Open

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

swagger-api/swagger-codegen-generators#1296 · Opened Jun 3, 2024
`@NotNull` is added by default for fields that are not required Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

swagger-api/swagger-codegen-generators#1295 · 4 comments · 7 reactions · Opened May 31, 2024
Breaking change introduced by #1259 Open

Question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

swagger-api/swagger-codegen-generators#1290 · 1 comment · Opened May 27, 2024
Extra generated regex pattern delimiters ('/') generates code that does not work for kotlin Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1288 · Opened May 23, 2024
[JavaSpring] Missing @Valid annotation for multipard/form-data content type if part is object Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

swagger-api/swagger-codegen-generators#1281 · Opened May 8, 2024
[python-flask] the operationId is not incorrectly sanitized Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

swagger-api/swagger-codegen-generators#1263 · 1 comment · Opened Mar 7, 2024
[python-flask] invalid content of a generated `__init__.py` file Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

swagger-api/swagger-codegen-generators#1262 · 2 comments · Opened Mar 7, 2024
Javascript output code can not be run because `static` keyword Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

swagger-api/swagger-codegen-generators#1260 · Opened Feb 27, 2024
Python asyncio client inconsistent Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

swagger-api/swagger-codegen-generators#1252 · 1 comment · Opened Feb 11, 2024
Operation info: The generated information does not match the expectations. Open

swagger-api/swagger-codegen-generators#1250 · 1 comment · 1 assignee · Opened Feb 8, 2024
Options have String values that are `boolean-type` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

swagger-api/swagger-codegen-generators#1227 · Opened Dec 5, 2023
Java-XML-Binding is only for javax and jakarta is ignored Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

swagger-api/swagger-codegen-generators#1226 · 2 comments · Opened Dec 5, 2023
OneOf property is failing during OAS Schema Validation Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

swagger-api/swagger-codegen-generators#1222 · Opened Nov 30, 2023
[JAXRS] Add useTags option to JAXRSSpec server codegen Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1209 · Opened Nov 21, 2023
Problems that occur when using --library okhttp4-gson configuration，version:3.0.50 Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

swagger-api/swagger-codegen-generators#1206 · 5 comments · Opened Nov 6, 2023
"Connection is still allocated" when deserializing InputStream return type Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

swagger-api/swagger-codegen-generators#1198 · Opened Oct 13, 2023
requestMapping for basepath defined in swagger '2.0' is missing in generation with io.swagger.codegen.v3 Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

swagger-api/swagger-codegen-generators#1197 · 2 comments · Opened Oct 12, 2023
[Java] [Jackson] discriminator is annotated with @JsonTypeId, which causes empty "type" on serialization Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

swagger-api/swagger-codegen-generators#1190 · 2 comments · 2 reactions · Opened Sep 29, 2023
Javascript code generation : Self $ref attributes type not adding to import section which leads to "ReferenceError: XXXXX is not defined" Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

swagger-api/swagger-codegen-generators#1186 · Opened Sep 18, 2023
bug in java code generation for Enumeration in swagger document Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

swagger-api/swagger-codegen-generators#1176 · Opened Aug 1, 2023
Property enumPropertyNaming is missing in swagger v3 generator options Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

swagger-api/swagger-codegen-generators#1172 · Opened Jul 18, 2023
[PHP] updated to 1.0.42 Enum data generate Array missing delimiter Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

swagger-api/swagger-codegen-generators#1164 · Opened Jun 7, 2023
[typescript-axios] incorrect imports in graph-like structures Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1163 · 5 comments · Opened Jun 2, 2023
[Python] JSON request with body=None should produce empty payload Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

swagger-api/swagger-codegen-generators#1141 · 3 comments · Opened May 2, 2023
[Ruby] Nested resources are not using datatype defined in documentation. Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

swagger-api/swagger-codegen-generators#1140 · 1 comment · Opened May 2, 2023
[maven][dependency conflict] slf4j-api Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

swagger-api/swagger-codegen-generators#1139 · Opened Apr 26, 2023
[BUG][maven] Does NOT execute tests Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

swagger-api/swagger-codegen-generators#1137 · Opened Apr 26, 2023
[doc] [maven] [build] [infrastructure] swagger-codegen-generators Does not compile with jdk8, Fatal error compiling: invalid flag: --release Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

swagger-api/swagger-codegen-generators#1136 · Opened Apr 26, 2023
Use unescapedAppDescription in README files (to support specs with markdown descriptions) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

swagger-api/swagger-codegen-generators#1124 · Opened Apr 4, 2023
Issue: circular reference may cause OOM issue Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1120 · Opened Mar 22, 2023
[Java generator] Generate various overloads for functions when some arguments are optional Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1116 · Opened Feb 20, 2023
Java enum classes generation is broken if errorOnUnknownEnum is turned on Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

swagger-api/swagger-codegen-generators#1093 · Opened Jan 4, 2023
Can we specify package structure relative to the generated directory in swagger Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

swagger-api/swagger-codegen-generators#1090 · Opened Dec 7, 2022
OpenAPI 3 Model with Named Type "Schema" creates issues for Java Codegen Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

swagger-api/swagger-codegen-generators#1089 · 1 comment · Opened Dec 5, 2022

A short digest of beginner-friendly GitHub issues.