feat: update

Author: earayu

README-zh.md

@@ -60,7 +60,11 @@ ApeRAG 支持 [MCP（模型上下文协议）](https://modelcontextprotocol.io/)
 }
 ```
 
-**重要提示**：将 `http://localhost:8000` 替换为您实际的 ApeRAG API 地址，将 `your-api-key-here` 替换为 ApeRAG 设置中的有效 API 密钥。
+**认证方式**（按优先级）：
+1. **HTTP Authorization 头**（推荐）：`Authorization: Bearer your-api-key`
+2. **环境变量**（备用）：`APERAG_API_KEY=your-api-key`
+
+**重要提示**：将 `https://rag.apecloud.com` 替换为您实际的 ApeRAG API 地址，将 `your-api-key-here` 替换为 ApeRAG 设置中的有效 API 密钥。
 
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README.md

@@ -61,7 +61,11 @@ ApeRAG supports [MCP (Model Context Protocol)](https://modelcontextprotocol.io/)
 }
 ```
 
-**Important**: Replace `http://localhost:8000` with your actual ApeRAG API URL and `your-api-key-here` with a valid API key from your ApeRAG settings.
+**Authentication** (by priority):
+1. **HTTP Authorization Header** (Recommended): `Authorization: Bearer your-api-key`
+2. **Environment Variable** (Fallback): `APERAG_API_KEY=your-api-key`
+
+**Important**: Replace `https://rag.apecloud.com` with your actual ApeRAG API URL and `your-api-key-here` with a valid API key from your ApeRAG settings.
 
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