python-openapi/openapi-core

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Openapi-core is a Python library that adds client-side and server-side support for the OpenAPI v3.0 and OpenAPI v3.1 and OpenAPI v3.2 specification.

Stars: 368
Forks: 140
Open beginner issues: 1
Indexed issues: 70

Dominant language: Python
License: BSD-3-Clause
Last GitHub push: May 29, 2026
Latest indexed: Sep 21, 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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[Bug]: cannot import name 'Spec' from 'openapi_core' version 0.23.1 Open

kind/bug

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

python-openapi/openapi-core#1225 · 2 comments · Opened Sep 19, 2026
[Bug]: allOf in a request body silently drops fields for x-www-form-urlencoded requests Open

kind/bug

Difficulty 3/5 1-2 days Newbie friendliness 76/100

python-openapi/openapi-core#1212 · Opened Jul 7, 2026
[Bug]: Query parameter validation fails to match empty string when listed as a valid enum value Open

kind/bug

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

python-openapi/openapi-core#1210 · Opened Jul 2, 2026
Unable to install along with the latest openapi-schema-validator Open

kind/bug

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

python-openapi/openapi-core#1188 · 2 comments · Opened May 29, 2026
[Bug]: OAS 3.1 list-style "type" raises in SchemaCaster and StyleDeserializersFactory Open

kind/bug kind/bug/confirmed

Difficulty 3/5 1-2 days Newbie friendliness 58/100

python-openapi/openapi-core#1180 · 3 comments · Opened May 14, 2026
[Feature]: Response Validation Sampling Open

kind/enhancement

Difficulty 5/5 Over a week Newbie friendliness 32/100

python-openapi/openapi-core#1142 · Opened Mar 12, 2026
[Feature]: Improve performance by using a faster library for parsing json schemas Open

kind/enhancement

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

python-openapi/openapi-core#1086 · 5 comments · Opened Jan 16, 2026
[Bug]: Schemas in query parameters don't work Open

kind/bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

python-openapi/openapi-core#1022 · 7 comments · Opened Aug 21, 2025
[Feature]: Use integration to deserialize data Open

area/deserializing kind/enhancement

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

python-openapi/openapi-core#978 · Opened Mar 22, 2025
[Feature]: Support for injecting custom input in custom openapi error response format Open

kind/enhancement

Difficulty 4/5 3-5 days Newbie friendliness 38/100

python-openapi/openapi-core#910 · Opened Sep 3, 2024
[Feature]: Provide error details (validation text, path) Open

kind/enhancement

Difficulty 5/5 Over a week Newbie friendliness 32/100

python-openapi/openapi-core#899 · 1 reaction · Opened Aug 20, 2024
[Bug]: docs links sometimes have incorrect extension Open

area/documentation kind/bug kind/bug/confirmed

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

python-openapi/openapi-core#881 · Opened Jul 31, 2024
[Bug]: TestSearch.test_chars_valid test failure Open

kind/bug

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

python-openapi/openapi-core#855 · 1 comment · Opened Jun 17, 2024
[Bug]: Mutual exclusion by use of `additionalProperties: false` across union types Open

kind/bug

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

python-openapi/openapi-core#803 · 1 comment · Opened Mar 4, 2024
Improve error messages from error handlers Open

area/contrib

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

python-openapi/openapi-core#787 · Opened Feb 13, 2024
[Feature]: Support for Azure Function HttpRequest object Open

kind/enhancement

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

python-openapi/openapi-core#759 · 1 comment · Opened Jan 12, 2024
[Feature]: Validate JSON from a file? Open

kind/enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

python-openapi/openapi-core#612 · 2 comments · Opened Jun 29, 2023
[Bug]: Chunked request in requestes Open

kind/bug kind/bug/confirmed

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

python-openapi/openapi-core#580 · 1 comment · Opened May 25, 2023
How to customize API validation error response in Flask Open

area/documentation kind/bug kind/missing-implementation

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

python-openapi/openapi-core#564 · 2 comments · Opened Apr 27, 2023
[Bug]: minItems and maxItems are not validated Open

kind/bug

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

python-openapi/openapi-core#558 · 1 comment · Opened Apr 14, 2023
[Bug]: Chunked request from request libraly Open

kind/bug kind/bug/confirmed

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

python-openapi/openapi-core#554 · 3 comments · Opened Apr 11, 2023
Documentation doesn't explain validation errors Open

kind/enhancement

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

python-openapi/openapi-core#536 · Opened Mar 16, 2023
Not registered format raises FormatterNotFoundError Open

area/unmarshalling kind/bug/confirmed

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

python-openapi/openapi-core#515 · Opened Feb 18, 2023
Add tornado support? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

python-openapi/openapi-core#451 · 3 comments · Opened Dec 23, 2022
Code-generation of type hints and handler interfaces Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

python-openapi/openapi-core#376 · 3 comments · 3 reactions · Opened Oct 4, 2021
Status and support Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

python-openapi/openapi-core#375 · 3 comments · 4 reactions · Opened Oct 3, 2021
Using required and allOf together Open

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

python-openapi/openapi-core#359 · 2 comments · 3 reactions · Opened Jun 10, 2021
Dependencies should have version specifiers Open

kind/bug/confirmed

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

python-openapi/openapi-core#356 · 2 comments · Opened Jun 8, 2021
Suggestion for project structure/setup improvements Open

kind/enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

python-openapi/openapi-core#355 · 1 comment · 1 reaction · Opened Jun 8, 2021
Support validation of Response without providing Request Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

python-openapi/openapi-core#343 · 2 comments · Opened May 24, 2021
openapi_core.create_spec fails to resolve $ref to parent directory Open

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

python-openapi/openapi-core#297 · 1 comment · 2 reactions · Opened Feb 18, 2021
Add support for OpenAPI v3.1 Open

area/schema kind/enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

python-openapi/openapi-core#296 · 4 comments · 3 reactions · Opened Feb 18, 2021
"nullable: True" ignored if used together with allOf or oneOf Open

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

python-openapi/openapi-core#277 · 5 comments · 7 reactions · Opened Jan 13, 2021
"uri" format not supported Open

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

python-openapi/openapi-core#275 · 2 comments · Opened Jan 12, 2021
[Feature] Fetch request-body with operation-id Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

python-openapi/openapi-core#269 · Opened Oct 8, 2020
[Question] Deprecation of validate_body() Open

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

python-openapi/openapi-core#268 · 1 reaction · Opened Sep 29, 2020
[Question]: Is there a way to disable ServerNotFound check Open

area/validation/request kind/question

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

python-openapi/openapi-core#264 · 3 comments · Opened Jul 30, 2020
[Question] Is there an option to change the flow of calling validation & formatting. Open

area/validation/request kind/question

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

python-openapi/openapi-core#262 · 2 comments · Opened Jul 3, 2020
InvalidSchemaFormatValue exception when unmarshalling string with format 'byte' Open

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

python-openapi/openapi-core#261 · 3 comments · 3 reactions · Opened Jun 29, 2020
Creating a spec fails if schemas contain non-JSON-serializable objects Open

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

python-openapi/openapi-core#258 · 2 reactions · Opened Jun 23, 2020
[Question] Is there a plan to implement discriminator ? Open

kind/question

Difficulty 5/5 Over a week Newbie friendliness 25/100

python-openapi/openapi-core#257 · 9 comments · Opened Jun 22, 2020
No support for specifying any type Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

python-openapi/openapi-core#256 · 2 comments · Opened Jun 17, 2020
[Feature]Need field-context inside formatters. Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

python-openapi/openapi-core#254 · Opened Jun 13, 2020
[Question] Default value option. Open

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

python-openapi/openapi-core#253 · Opened Jun 12, 2020
Nullable field or schema not validating for None Open

Difficulty 3/5 1-2 days Newbie friendliness 32/100

python-openapi/openapi-core#251 · 12 comments · Opened Jun 4, 2020
Is there support for deep Object in query params Open

area/deserializing kind/missing-implementation

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

python-openapi/openapi-core#250 · 2 comments · Opened May 25, 2020
Django integration is incompatible with Django REST Framework Open

area/contrib help wanted

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

python-openapi/openapi-core#247 · 3 reactions · Opened Apr 24, 2020
request body in DELETE ? Open

area/validation/request kind/question

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

python-openapi/openapi-core#244 · 3 comments · Opened Apr 22, 2020
Errors are less verbose than they need to be Open

area/unmarshalling kind/enhancement

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

python-openapi/openapi-core#241 · 2 comments · 5 reactions · Opened Apr 15, 2020
Is there any provision to pickle spec Open

area/schema kind/enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

python-openapi/openapi-core#238 · 4 comments · Opened Apr 11, 2020

python-openapi/openapi-core

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