flask-openapi3-swagger
Provide Swagger UI for flask-openapi3.
Decision gist · record as of 2026-08-14
Yes, if you are already using flask-openapi3 and want Swagger UI for your API documentation. The low install friction, permissive MIT license, active maintenance, and zero known vulnerabilities make it a straightforward choice. Install it only if flask-openapi3 is already in your project; it is an optional plugin, not a standalone tool.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.8 or later; flask-openapi3 must be installed and configured first.
- Low friction install with a single runtime dependency.
- Active maintenance as of 2026-08-14 with recent release activity.
License · maintenance · safety
MIT (permissive) — MIT license permits free use, modification, and distribution with minimal restrictions—suitable for most commercial and open-source projects.
last release 2025-12-12 (245 days) · last repo commit 2026-08-14 · 4 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 396,101 downloads/mo, #6,974 on PyPI
Alternatives
Verify before relying
pip install flask-openapi3-swagger
from flask_openapi3 import OpenAPI
app = OpenAPI(__name__)
@app.get('/hello')
def hello():
return {'message': 'Hello'}
if __name__ == '__main__':
app.run()- Whether Swagger UI can be customized beyond what the base flask-openapi3 framework provides
- Performance characteristics when serving large or complex OpenAPI schemas
- Compatibility with specific versions of flask-openapi3 beyond the stated dependency
What it is and what it does
flask-openapi3-swagger is a plugin that adds Swagger UI to flask-openapi3 applications, transforming OpenAPI specifications into an interactive, browser-based interface for exploring and testing APIs. It sits on top of flask-openapi3 and requires that package as a runtime dependency, providing one of several optional UI templates available in the flask-openapi ecosystem.
The package is lightweight and actively maintained. It integrates directly with flask-openapi3's UI template system, allowing developers to enable Swagger documentation without writing additional code beyond a standard installation. The plugin is part of a broader suite of UI options (Redoc, RapiDoc, RapiPdf, Scalar, Elements) that can be mixed and matched depending on documentation needs.
Use it for
- Enable interactive API documentation for REST endpoints defined in a flask-openapi3 application
- Allow API consumers to test endpoints directly from the browser without external tools
- Generate and serve auto-updated API documentation from OpenAPI schemas
- Provide a standard UI for internal or public API exploration during development
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you are already using flask-openapi3 and want Swagger UI for your API documentation.
The low install friction, permissive MIT license, active maintenance, and zero known vulnerabilities make it a straightforward choice. Install it only if flask-openapi3 is already in your project; it is an optional plugin, not a standalone tool.
Install
flask-openapi3-swagger on PyPI
Before you install
Low friction install with a single runtime dependency. Active maintenance as of 2026-08-14 with recent release activity.
Requires Python 3.8 or later; flask-openapi3 must be installed and configured first.
License in practice
MIT license permits free use, modification, and distribution with minimal restrictions—suitable for most commercial and open-source projects.
Quickstart
pip install flask-openapi3-swagger
from flask_openapi3 import OpenAPI
app = OpenAPI(__name__)
@app.get('/hello')
def hello():
return {'message': 'Hello'}
if __name__ == '__main__':
app.run()Verify before relying
- Whether Swagger UI can be customized beyond what the base flask-openapi3 framework provides
- Performance characteristics when serving large or complex OpenAPI schemas
- Compatibility with specific versions of flask-openapi3 beyond the stated dependency
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.8 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packageflask-openapi3 |
| Maintenance | Actively maintained 245 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 396,101 / month, #6,974 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableEnvironment :: Web EnvironmentFramework :: FlaskIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: Only |
Evidence: flask_openapi3_swagger-5.31.0-py3-none-any.whl
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See also aiohttp-swagger3 · flask-openapi3 · flask-openapi3-elements · flask-openapi3-rapidoc · flask-openapi3-scalar · flask-swagger-ui · Flask-API · scalar-fastapi · swagger-ui-bundle · swagger-ui-py