From c521fa65da4c00b39c4ec08979d169b466fd1314 Mon Sep 17 00:00:00 2001
From: Josh Cannon <joshdcannon@gmail.com>
Date: Tue, 28 Oct 2025 08:41:17 -0500
Subject: [PATCH 1/3] Expose `FunctionAuth` in `__all__`

---
 httpx/_auth.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/httpx/_auth.py b/httpx/_auth.py
index b03971ab4b..9d24faed99 100644
--- a/httpx/_auth.py
+++ b/httpx/_auth.py
@@ -16,7 +16,7 @@
     from hashlib import _Hash
 
 
-__all__ = ["Auth", "BasicAuth", "DigestAuth", "NetRCAuth"]
+__all__ = ["Auth", "BasicAuth", "DigestAuth", "FunctionAuth", "NetRCAuth"]
 
 
 class Auth:

From 256ebcedc7e861408dec34ec2155999328835ceb Mon Sep 17 00:00:00 2001
From: Josh Cannon <joshdcannon@gmail.com>
Date: Tue, 28 Oct 2025 08:50:06 -0500
Subject: [PATCH 2/3] Update __init__.py

---
 httpx/__init__.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/httpx/__init__.py b/httpx/__init__.py
index e9addde071..63225040ba 100644
--- a/httpx/__init__.py
+++ b/httpx/__init__.py
@@ -50,6 +50,7 @@ def main() -> None:  # type: ignore
     "DecodingError",
     "delete",
     "DigestAuth",
+    "FunctionAuth",
     "get",
     "head",
     "Headers",

From 4b9f63e507c4ea75fa59f6bbdfb103e2f014a6f9 Mon Sep 17 00:00:00 2001
From: Kar Petrosyan <kar.petrosyanpy@gmail.com>
Date: Wed, 10 Dec 2025 18:54:35 +0400
Subject: [PATCH 3/3] changelog

---
 CHANGELOG.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13bbfcdb79..57fa44b8ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 * Drop support for Python 3.8
 
+### Added
+
+* Expose `FunctionAuth` from the public API. (#3699)
+
 ## 0.28.1 (6th December, 2024)
 
 * Fix SSL case where `verify=False` together with client side certificates.