EdgeOne Pages Node Functions Proxy for CNB LLM API, fully compatible with OpenAI standard interface, solving CORS issues.

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Mirror Repositories: CNB, GitHub

This project proxies the CNB AI Chat Completions API, converting it to OpenAI standard interface format for easy use with various OpenAI-compatible clients.

curl --request POST \
  --url https://api.cnb.cool/{repo}/-/ai/chat/completions \
  --header 'Accept: application/json' \
  --header 'Authorization: 123' \
  --header 'Content-Type: application/json' \
  --data '{
  "messages": [
    {
      "content": "string",
      "role": "string"
    }
  ],
  "model": "string",
  "stream": true
}'

Authentication: Requires CNB access token with repo-code:r permission, passed via Authorization: Bearer <token> header.

curl --request POST \
  --url https://your-edge-pages-domain/v1/chat/completions \
  --header 'Authorization: Bearer YOUR_CNB_TOKEN' \
  --header 'Content-Type: application/json' \
  --data '{
  "messages": [
    {
      "content": "string",
      "role": "string"
    }
  ],
  "model": "string",
  "stream": true
}'

Comparison	Original CNB API	Proxied (OpenAI Standard)
Endpoint	POST /{repo}/-/ai/chat/completions	POST /v1/chat/completions
Authentication	Authorization: Bearer <token>	Authorization: Bearer <token> (pass-through)
Repository Config	Specified in URL path	Configured via CNB_REPO environment variable

• ✅ Fully compatible with OpenAI API standard interface
• ✅ Supports streaming responses (SSE)
• ✅ Supports all domains CORS
• ✅ Request/response logging
• ✅ Standardized error response format
• ✅ Auto-removes sk- prefix (compatibility mechanism)
• ✅ Customizable AI endpoint path

Endpoint	Method	Description
/v1/chat/completions	POST	Chat completions endpoint
/v1/embeddings	POST	Embeddings endpoint
/v1/models	GET	Models list endpoint

Connect your Git repository, EdgeOne Pages will automatically detect Node Functions.

In EdgeOne Pages console: Project Settings → Environment Variables, add:

Variable	Description	Example	Required
CNB_REPO	CNB repository path (owner/project/repo)	Mintimate/code-nest/cnb-edge-gateway	✅
CNB_AI_PATH	Custom AI endpoint path, leave empty for default	/-/ai/chat/completions	❌
CNB_EMBEDDINGS_PATH	Embeddings endpoint path, required for embeddings feature	No default	❌
CUSTOM_MODELS	Custom model list, comma-separated	model-a,model-b,model-c	❌

Note:

• CNB_AI_PATH defaults vary by endpoint:
  • /v1/chat/completions → /-/ai/chat/completions
  • /v1/models → /-/ai/models
• CNB_EMBEDDINGS_PATH is used for the embeddings endpoint. It is required if you want to use the embeddings feature (e.g., /-/ai/embeddings).
• CUSTOM_MODELS is used for the model list returned by /v1/models endpoint. If set, owned_by will be custom; if not set, the default model hunyuan-2.0-instruct is used with owned_by as cnb-default.

Push code or manually trigger deployment.

Configuration	Value
Base URL	https://your-edge-pages-domain/v1
API Key	Your CNB Token (with or without sk- prefix)

from openai import OpenAI

client = OpenAI(
    base_url="https://your-edge-pages-domain/v1",
    api_key="YOUR_CNB_TOKEN"
)

# Streaming call
stream = client.chat.completions.create(
    model="any",
    messages=[{"role": "user", "content": "Hello!"}],
    stream=True
)

for chunk in stream:
    if chunk.choices[0].delta.content:
        print(chunk.choices[0].delta.content, end="")

const response = await fetch('https://your-edge-pages-domain/v1/chat/completions', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_CNB_TOKEN',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    stream: true,
    messages: [{ role: 'user', content: 'Hello!' }],
  }),
});

// Handle SSE stream
const reader = response.body.getReader();
const decoder = new TextDecoder();

while (true) {
  const { done, value } = await reader.read();
  if (done) break;
  console.log(decoder.decode(value));
}

All error responses follow OpenAI standard format:

{
  "error": {
    "message": "Error description",
    "type": "error_type",
    "param": null,
    "code": null
  }
}

Status Code	Type	Description
401	authentication_error	Missing Authorization header
500	server_error	Server configuration error or internal error

cnb-edge-gateway/
├── node-functions/
│   └── v1/
│       ├── chat/
│       │   └── completions/
│       │       └── index.js    # POST /v1/chat/completions
│       ├── embeddings/
│       │   └── index.js        # POST /v1/embeddings
│       └── models/
│           └── index.js        # GET /v1/models
└── README.md

MIT