fix: API key validation now raises AuthenticationError instead of ValueError for invalid formats.

Author: 0xneobyte

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.1.6] - 2025-12-12
+
+### Fixed
+
+- Fixed API key validation to raise `AuthenticationError` instead of `ValueError` for invalid format, ensuring consistent error handling
+
 ## [0.1.5] - 2025-12-12
 
 ### Fixed

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "brainus-ai"
-version = "0.1.5"
+version = "0.1.6"
 description = "Official Python SDK for Brainus AI - RAG-powered educational content API"
 readme = "README.md"
 license = {text = "MIT"}

src/brainus_ai/client.py

@@ -45,7 +45,7 @@ def __init__(
             max_retries: Maximum number of retry attempts for failed requests
         """
         if not api_key or not api_key.startswith("brainus_"):
-            raise ValueError("Invalid API key format. Expected format: brainus_...")
+            raise AuthenticationError("Invalid API key format. Expected format: brainus_...")
 
         self.api_key = api_key
         self.base_url = base_url.rstrip("/")