Flask-OpenID
OpenID support for Flask
Decision gist · record as of 2026-08-14
No, unless you are maintaining legacy code that specifically requires the original OpenID protocol. OpenID is obsolete; modern Flask applications should use OpenID Connect, OAuth 2.0, or other current authentication standards. The package is dormant (last release 810 days ago) and implements a protocol almost no one uses anymore. Install only if you have an explicit requirement to support existing OpenID infrastructure.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Flask and python3-openid to be installed; OpenID protocol itself is obsolete and rarely used in modern applications.
- Low install friction with only two runtime dependencies (Flask and python3-openid).
- Maintenance is dormant—last release was 810 days ago in May 2024, though the repository remains active and the package supports current Python versions.
License · maintenance · safety
BSD (permissive) — BSD license permits commercial and private use with minimal restrictions, making it suitable for most projects that can accept permissive licensing.
last release 2024-05-26 (810 days) · last repo commit 2024-05-26 · 235 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 1,502,720 downloads/mo, #3,829 on PyPI
Alternatives
Verify before relying
pip install Flask-OpenID
from flask import Flask
from flask_openid import OpenID
app = Flask(__name__)
oid = OpenID(app)- Whether existing OpenID providers still operate and support this legacy protocol version
- Real-world compatibility with modern Flask versions beyond the stated Python 3 support
- Whether the underlying python3-openid dependency receives security updates
What it is and what it does
Flask-OpenID is a Flask extension that integrates the original OpenID authentication protocol into web applications. It allows developers to add OpenID-based login flows where users authenticate through external OpenID providers rather than managing credentials directly in the application.
The package wraps the python3-openid library and provides Flask-specific decorators and utilities to simplify OpenID integration. However, the fact sheet and package description both note that this implements a very old and outdated version of OpenID—the OpenID Connect protocol is now the current standard. Most modern authentication scenarios use OAuth 2.0 or OpenID Connect instead. The package remains available for legacy systems or niche use cases where OpenID support is still required.
Use it for
- Adding OpenID authentication to legacy Flask applications that already rely on the original OpenID protocol
- Integrating with systems or services that only support the original OpenID specification
- Maintaining backward compatibility in older web applications during gradual migration away from OpenID
- Educational or historical reference for understanding how OpenID authentication was implemented in Flask
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
No, unless you are maintaining legacy code that specifically requires the original OpenID protocol.
OpenID is obsolete; modern Flask applications should use OpenID Connect, OAuth 2.0, or other current authentication standards. The package is dormant (last release 810 days ago) and implements a protocol almost no one uses anymore. Install only if you have an explicit requirement to support existing OpenID infrastructure.
Install
flask-openid on PyPI
Before you install
Low install friction with only two runtime dependencies (Flask and python3-openid). Maintenance is dormant—last release was 810 days ago in May 2024, though the repository remains active and the package supports current Python versions.
Requires Flask and python3-openid to be installed; OpenID protocol itself is obsolete and rarely used in modern applications.
License in practice
BSD license permits commercial and private use with minimal restrictions, making it suitable for most projects that can accept permissive licensing.
Quickstart
pip install Flask-OpenID
from flask import Flask
from flask_openid import OpenID
app = Flask(__name__)
oid = OpenID(app)Verify before relying
- Whether existing OpenID providers still operate and support this legacy protocol version
- Real-world compatibility with modern Flask versions beyond the stated Python 3 support
- Whether the underlying python3-openid dependency receives security updates
Package facts
| License | BSD permissive |
| Python support | Supports the current Python release >=3.0 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagesFlaskpython3-openid |
| Maintenance | Dormant 810 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 1,502,720 / month, #3,829 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaEnvironment :: Web EnvironmentIntended Audience :: DevelopersLicense :: OSI Approved :: BSD LicenseOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyTopic :: Internet :: WWW/HTTP :: Dynamic ContentTopic :: Software Development :: Libraries :: Python Modules |
Evidence: Flask_OpenID-1.3.1-py3-none-any.whl
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See also flask-oidc · python-openid · django-oidc-provider · python3-openid · PyLTI1p3 · Flask-Principal · oidc-provider-mock · pyop · Authlib · oic