FastAPI server that proxies OpenAI API endpoints using hexin_engine backend
Project description
Hexin Proxy Server
一个 FastAPI 服务器,提供 OpenAI 和 Anthropic 兼容的 API 接口,通过代理 Hexin 后端服务来提供 AI 功能。
功能特性
- Chat Completions API: 兼容 OpenAI 的聊天完成接口
- Claude Messages API: 兼容 Anthropic Messages API,支持 Claude Code 和 Anthropic SDK
- Responses API: 兼容 OpenAI 的推理响应接口 (支持 o3、o4-mini)
- Embeddings API: 兼容 OpenAI 的文本嵌入接口
- 模型列表: 支持列出可用的 AI 模型
- 流式响应: 支持实时流式聊天响应和推理响应
- 多模型支持: 支持多种大语言模型和嵌入模型
支持的接口
Chat Completions (OpenAI 格式)
POST /v1/chat/completions- 创建聊天完成- 支持流式和非流式响应
- 支持工具调用和函数调用
- 支持多种模型:GPT、Claude、Gemini、DeepSeek 等
- 默认端口: 8777
Claude Messages API (Anthropic 格式)
POST /v1/messages- 创建消息(完全兼容 Anthropic SDK)- 支持流式和非流式响应
- 支持多轮对话和 system 提示词
- 可直接与 Claude Code 和 Anthropic SDK 集成
- 默认端口: 8777
- 📖 详细文档
Responses (推理响应)
POST /v1/responses- 创建推理响应 (专为 o3、o4-mini 等推理模型设计)- 支持流式和非流式响应
- 支持推理配置 (effort: low/medium/high, summary: brief/detailed)
- 返回详细的推理过程和结果
Embeddings
POST /v1/embeddings- 创建文本嵌入- 支持的模型:text-embedding-ada-002, text-embedding-3-small, text-embedding-3-large
- 支持单个和批量文本处理
Models
GET /v1/models- 列出可用模型- 返回聊天、推理和嵌入模型列表
快速开始
1. 安装依赖
pip install hexin-server --upgrade
或者本地安装
git clone https://github.com/LinXueyuanStdio/hexin-proxy-server.git
cd hexin-proxy-server
pip install -e .
2. 配置环境变量
cp .env.example .env
创建 .env 文件:
HITHINK_APP_ID=your_app_id
HITHINK_APP_SECRET=your_app_secret
HITHINK_APP_URL=your_app_url
3. 启动服务器
OpenAI 兼容服务器(默认端口 8777)
# 直接运行
python -m hexin_server
# 或者指定参数
python -m hexin_server --host 0.0.0.0 --port 8777 --reload
4. 测试接口
Chat Completions 示例(OpenAI 格式)
curl -X POST "http://localhost:8777/v1/chat/completions" \
-H "Authorization: Bearer sk-fastapi-proxy-key-12345" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-4o",
"messages": [
{"role": "user", "content": "Hello, how are you?"}
]
}'
Claude Messages 示例(Anthropic 格式)
curl -X POST "http://localhost:8777/v1/messages" \
-H "x-api-key: sk-fastapi-proxy-key-12345" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-3-sonnet-20240229",
"max_tokens": 1024,
"messages": [
{"role": "user", "content": "你好,请介绍一下你自己"}
]
}'
Responses 推理示例
# 非流式推理响应
curl -X POST "http://localhost:8777/v1/responses" \
-H "Authorization: Bearer sk-fastapi-proxy-key-12345" \
-H "Content-Type: application/json" \
-d '{
"model": "o3",
"input": "估算下海水的总重量",
"reasoning": {
"effort": "medium",
"summary": "detailed"
}
}'
# 流式推理响应
curl -X POST "http://localhost:8777/v1/responses" \
-H "Authorization: Bearer sk-fastapi-proxy-key-12345" \
-H "Content-Type: application/json" \
-d '{
"model": "o3",
"input": "估算下海水的总重量",
"reasoning": {
"effort": "medium",
"summary": "detailed"
},
"stream": true
}'
Embeddings 示例
curl -X POST "http://localhost:8777/v1/embeddings" \
-H "Authorization: Bearer sk-fastapi-proxy-key-12345" \
-H "Content-Type: application/json" \
-d '{
"input": "Hello, world!",
"model": "text-embedding-ada-002"
}'
使用 OpenAI 和 Anthropic 客户端库
OpenAI 格式 API
import openai
# 配置客户端
client = openai.OpenAI(
api_key="sk-fastapi-proxy-key-12345",
base_url="http://localhost:8777/v1"
)
# 聊天完成
response = client.chat.completions.create(
model="gpt-4o",
messages=[
{"role": "user", "content": "Hello, how are you?"}
]
)
# 创建嵌入
embeddings = client.embeddings.create(
model="text-embedding-ada-002",
input="Hello, world!"
)
Anthropic Messages API
from anthropic import Anthropic
# 配置客户端
client = Anthropic(
base_url="http://localhost:8777",
api_key="sk-fastapi-proxy-key-12345",
)
# 创建消息
message = client.messages.create(
model="claude-3-sonnet-20240229",
max_tokens=1024,
messages=[
{"role": "user", "content": "你好,请介绍一下你自己。"}
]
)
print(message.content[0].text)
# 流式响应
with client.messages.stream(
model="claude-3-sonnet-20240229",
max_tokens=1024,
messages=[
{"role": "user", "content": "讲一个故事"}
]
) as stream:
for text in stream.text_stream:
print(text, end="", flush=True)
推理响应 API
推理响应需要使用 requests 库,因为 OpenAI 客户端暂不支持 responses API:
import requests
response = requests.post(
"http://localhost:8777/v1/responses",
headers={
"Authorization": "Bearer sk-fastapi-proxy-key-12345",
"Content-Type": "application/json"
},
json={
"model": "o3",
"input": "估算下海水的总重量",
"reasoning": {
"effort": "medium",
"summary": "detailed"
}
}
)
详细文档
- Claude Messages API 使用指南 - Anthropic Messages API 完整文档和使用示例
- Responses API 使用指南 - 推理接口文档
- Embedding API 使用指南 - 嵌入接口文档
项目结构
hexin-proxy-server/
├── hexin_server/
│ ├── __init__.py
│ └── __main__.py # 统一服务器 (端口 8777,支持 OpenAI 和 Anthropic API)
├── tests/
│ ├── test_embedding.py # 嵌入接口测试
│ └── test_anthropic_sdk.py # Anthropic SDK 测试
├── CLAUDE_MESSAGES_API.md # Claude API 使用指南
├── RESPONSES_API.md # 推理 API 使用指南
├── EMBEDDING_API.md # 嵌入 API 使用指南
├── README.md # 项目总览
├── pyproject.toml # 项目配置
└── .env.example # 环境变量示例
测试
项目包含多种测试脚本来验证功能:
# 测试嵌入接口
python tests/test_embedding.py
# 测试 Anthropic SDK(Claude Messages API)
python tests/test_anthropic_sdk.py
所有测试都使用统一的 8777 端口服务器。
健康检查
检查服务器状态:
curl http://localhost:8777/health
响应:
{
"status": "healthy",
"authenticated": true
}
贡献
欢迎提交 Issue 和 Pull Request!
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