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About

OpenAPI Spec Validator is a CLI, pre-commit hook and python package that validates OpenAPI Specs against the OpenAPI 2.0 (aka Swagger), OpenAPI 3.0 and OpenAPI 3.1 specification. The validator aims to check for full compliance with the Specification.

Documentation

Check documentation to see more details about the features. All documentation is in the “docs” directory and online at openapi-spec-validator.readthedocs.io

Installation

pip install openapi-spec-validator

Alternatively you can download the code and install from the repository:

pip install -e git+https://github.com/python-openapi/openapi-spec-validator.git#egg=openapi_spec_validator

Usage

CLI (Command Line Interface)

Straight forward way:

openapi-spec-validator openapi.yaml

pipes way:

cat openapi.yaml | openapi-spec-validator -

docker way:

docker run -v path/to/openapi.yaml:/openapi.yaml --rm pythonopenapi/openapi-spec-validator /openapi.yaml

or more pythonic way:

python -m openapi_spec_validator openapi.yaml

For more details, read about CLI (Command Line Interface).

pre-commit hook

repos:
-   repo: https://github.com/python-openapi/openapi-spec-validator
    rev: 0.8.0 # The version to use or 'master' for latest
    hooks:
    -   id: openapi-spec-validator

For more details, read about pre-commit hook.

Python package

from openapi_spec_validator import validate
from openapi_spec_validator.readers import read_from_filename

spec_dict, base_uri = read_from_filename('openapi.yaml')

# If no exception is raised by validate(), the spec is valid.
validate(spec_dict)

validate({'openapi': '3.1.0'})

Traceback (most recent call last):
    ...
OpenAPIValidationError: 'info' is a required property

For more details, read about Python package.

Related projects

  • openapi-core

    Python library that adds client-side and server-side support for the OpenAPI v3.0 and OpenAPI v3.1 specification.

  • openapi-schema-validator

    Python library that validates schema against the OpenAPI Schema Specification v3.0 and OpenAPI Schema Specification v3.1.

License

Copyright (c) 2017-2023, Artur Maciag, All rights reserved. Apache v2

Project links

Data verified by PyPI on Feb 23, 2026
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Key dates

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  • Released:
Newer release available (0.9.0)

1 maintainer

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Avatar for p1c2u from gravatar.com p1c2u

Credits

Author: Artur Maciag

GitHub Statistics

Data verified by PyPI on Feb 23, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

Apache-2.0
View SPDX License List

Requires

Python <4.0, >=3.10

Tags

openapi swagger schema

Classifiers

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