azurefunctions-extensions-base

Base Python worker extension for Azure Functions.

azurefunctions-extensions-base v1.2.0 80.6K downloads/30d#14,282 on PyPI

Permissive license MIT License Active released 2026-05-12

What it is and what it does

azurefunctions-extensions-base is a foundational library for the Azure Functions Python worker that enables custom extensions to recognize and bind to SDK types and HttpV2 types. It is not designed for direct use; instead, it serves as the base layer for specialized extension packages that add specific bindings (blob storage, Cosmos DB, Event Hubs, Service Bus) and protocol handlers (FastAPI over HTTP).

The package has no runtime dependencies and installs with low friction. It supports Python 3.8 and later, with active maintenance as of mid-2026. Developers should install this only as a transitive dependency of an extending package, not directly in application code.

Use it for:

Building custom Azure Functions extensions that need to bind to Azure SDK types.
Extending Azure Functions with new protocol handlers beyond standard HTTP.
Integrating FastAPI or other frameworks as Azure Functions bindings.
Adding support for Azure services (blob, Cosmos DB, Event Hubs, Service Bus) as function triggers or outputs.

Worth the install?

AI-flagged interpretation of the facts on this page — verify before relying

Provides base infrastructure for Azure Functions Python extensions to recognize and bind to SDK types and HttpV2 types, enabling custom bindings and handlers.

Yes, but only as a transitive dependency of an extending package (e.g., azurefunctions-extensions-http-fastapi). Do not install directly; the library is not intended for standalone use. If an extending package requires it, installation is safe and low-friction.

Install

azurefunctions-extensions-base on PyPI

pip

pip install azurefunctions-extensions-base

uv

uv add azurefunctions-extensions-base

poetry

poetry add azurefunctions-extensions-base

Installing azurefunctions-extensions-base

Before you install

Low friction installation with no runtime dependencies. Actively maintained as of 2026-05-12, supporting current Python versions (3.10–3.13).

License in practice

MIT License permits free use, modification, and distribution with minimal restrictions, making it suitable for both open and closed projects.

Quickstart

pip install azurefunctions-extensions-base

# This is a base library; import and use via extending packages:
# from azurefunctions_extensions_http_fastapi import ...
# from azurefunctions_extensions_bindings_blob import ...

Intended for use only through extending packages (e.g., azurefunctions-extensions-http-fastapi, azurefunctions-extensions-bindings-blob); direct use is not supported.

Verify before relying

Whether this package is safe to install alongside other Azure Functions extension packages without version conflicts.
What specific SDK types and HttpV2 types are supported by this base version.

Package facts

License	MIT License (permissive)
Python support	supports the current Python release (>=3.8)
Install friction	low — pure-Python wheel
Runtime dependencies	none
Maintenance	actively maintained — 94 days since the last release
First released	2024-04-10
Downloads	80,605/month — #14,282 on PyPI (30-day window, as of 2026-08-14)
Known vulnerabilities	none known (OSV.dev, checked 2026-08-14)

Evidence: azurefunctions_extensions_base-1.2.0-py3-none-any.whl

Development Status :: 5 - Production/StableEnvironment :: Web EnvironmentIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseOperating System :: MacOS :: MacOS XOperating System :: Microsoft :: WindowsOperating System :: POSIXProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13