flask-openapi3-scalar
Provide Scalar UI for flask-openapi3.
Decision gist · record as of 2026-08-14
Yes, if you are already using flask-openapi3 and prefer Scalar's UI design over alternatives like Swagger or Redoc. Install friction is minimal, maintenance is active, and the MIT license poses no restrictions. No known vulnerabilities. Not worth installing if you don't need interactive API documentation or have already chosen a different UI template.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires flask-openapi3 to be installed; Scalar UI is an optional plugin that must be explicitly installed.
- Installs cleanly with a single runtime dependency (flask-openapi3).
- Actively maintained with recent commits and a stable production release status.
License · maintenance · safety
MIT (permissive) — MIT license permits free use, modification, and distribution with minimal restrictions—suitable for both open-source and commercial projects.
last release 2026-02-07 (188 days) · last repo commit 2026-08-14 · 4 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 87,561 downloads/mo, #13,786 on PyPI
Alternatives
Verify before relying
pip install flask-openapi3-scalar
from flask import Flask
from flask_openapi3 import OpenAPI
app = OpenAPI(__name__)
# Your OpenAPI-decorated routes here
if __name__ == '__main__':
app.run()- Whether Scalar UI offers feature parity with other UI options (Swagger, Redoc, RapiDoc) listed in the parent project
- Performance characteristics when serving large or complex OpenAPI schemas
What it is and what it does
flask-openapi3-scalar is a UI plugin that adds Scalar-based interactive documentation to Flask applications using flask-openapi3. It sits on top of flask-openapi3 and provides an alternative to other UI templates like Swagger, Redoc, or RapiDoc for visualizing and testing your API endpoints.
The package is lightweight and installs with minimal friction—just flask-openapi3 as a runtime dependency. It's actively maintained, supports Python 3.8 and later, and carries no known security vulnerabilities. Use it when you want Scalar's particular design and interaction model for your API documentation instead of the other available UI options.
Use it for
- Add an interactive, browser-based API explorer to a Flask REST API without writing custom documentation
- Replace or supplement Swagger UI with Scalar's interface for a different user experience
- Provide developers with a live testing environment for your OpenAPI-documented endpoints
- Serve multiple UI templates from the same Flask app by installing different flask-openapi3 UI plugins
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 prefer Scalar's UI design over alternatives like Swagger or Redoc.
Install friction is minimal, maintenance is active, and the MIT license poses no restrictions. No known vulnerabilities. Not worth installing if you don't need interactive API documentation or have already chosen a different UI template.
Install
flask-openapi3-scalar on PyPI
Before you install
Installs cleanly with a single runtime dependency (flask-openapi3). Actively maintained with recent commits and a stable production release status.
Requires flask-openapi3 to be installed; Scalar UI is an optional plugin that must be explicitly installed.
License in practice
MIT license permits free use, modification, and distribution with minimal restrictions—suitable for both open-source and commercial projects.
Quickstart
pip install flask-openapi3-scalar
from flask import Flask
from flask_openapi3 import OpenAPI
app = OpenAPI(__name__)
# Your OpenAPI-decorated routes here
if __name__ == '__main__':
app.run()Verify before relying
- Whether Scalar UI offers feature parity with other UI options (Swagger, Redoc, RapiDoc) listed in the parent project
- Performance characteristics when serving large or complex OpenAPI schemas
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 188 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 87,561 / month, #13,786 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_scalar-1.44.15-py3-none-any.whl
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See also flask-openapi3-swagger · scalar-fastapi · flask-openapi3-rapidoc · flask-openapi3-elements · flask-openapi3 · aiohttp-swagger3 · flask-swagger-ui · swagger-ui-py · APIFlask · mkdocs-render-swagger-plugin