WeChat Mini Programs serve over 1 billion monthly active users in China. For developers building AI-powered features inside this ecosystem, the challenge has always been backend complexity — spinning up servers, managing APIs, handling user sessions, and keeping costs under control.
OpenClaw changes the equation. By deploying this open-source AI agent on a cloud server and connecting it to your WeChat Mini Program, you get a persistent, intelligent backend that handles natural language processing, user conversations, and task automation — without building an NLP pipeline from scratch.
This guide covers deploying OpenClaw on Tencent Cloud Lighthouse and integrating it as the AI backend for a WeChat Mini Program.
The system has three layers:
The data flow is straightforward:
User (WeChat) → Mini Program → HTTPS API → Lighthouse → OpenClaw → LLM → Response
Use the one-click image deployment:
For the full walkthrough, refer to the OpenClaw deployment guide.
After deployment, configure your LLM API key in the application management panel. For WeChat Mini Programs serving Chinese users, Tencent Hunyuan or Tencent Cloud DeepSeek provide the best latency and language quality.
WeChat Mini Programs communicate via HTTPS. You need a thin API layer that receives requests from the Mini Program and forwards them to OpenClaw. Here's a minimal Node.js implementation:
# Install Node.js
curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash -
sudo apt install -y nodejs
# Create the gateway project
mkdir -p /opt/wechat-gateway && cd /opt/wechat-gateway
npm init -y
npm install express axios
Create server.js:
const express = require('express');
const axios = require('axios');
const app = express();
app.use(express.json());
const OPENCLAW_ENDPOINT = 'http://127.0.0.1:3000/api/chat';
app.post('/api/chat', async (req, res) => {
const { userId, message } = req.body;
try {
const response = await axios.post(OPENCLAW_ENDPOINT, {
user: userId,
content: message
});
res.json({ reply: response.data.reply });
} catch (error) {
console.error('OpenClaw error:', error.message);
res.status(500).json({ error: 'Service temporarily unavailable' });
}
});
app.listen(8080, () => console.log('Gateway running on port 8080'));
Important: Set up Nginx as a reverse proxy with your ICP-registered domain and SSL certificate. WeChat requires all Mini Program API calls to go through verified HTTPS endpoints.
In your WeChat Mini Program project, create the chat interface and connect it to the gateway:
// pages/chat/chat.js
Page({
data: {
messages: [],
inputText: ''
},
sendMessage() {
const userMsg = this.data.inputText;
if (!userMsg.trim()) return;
const userId = wx.getStorageSync('userId') || this.generateUserId();
this.setData({
messages: [...this.data.messages, { role: 'user', content: userMsg }],
inputText: ''
});
wx.request({
url: 'https://your-domain.com/api/chat',
method: 'POST',
data: { userId, message: userMsg },
success: (res) => {
this.setData({
messages: [...this.data.messages, { role: 'assistant', content: res.data.reply }]
});
}
});
},
generateUserId() {
const id = 'user_' + Date.now();
wx.setStorageSync('userId', id);
return id;
}
});
Ensure the AI backend stays online permanently:
loginctl enable-linger $(whoami)
export XDG_RUNTIME_DIR=/run/user/$(id -u)
clawdbot daemon install
clawdbot daemon start
Also daemonize the gateway:
npm install -g pm2
cd /opt/wechat-gateway
pm2 start server.js --name wechat-gateway
pm2 save
pm2 startup
For direct WeChat integration, OpenClaw supports WeChat Work (Enterprise WeChat) as a built-in channel via the management panel. For personal WeChat / Mini Programs, the HTTP API approach above is the most reliable method.
If you also want to connect OpenClaw to other channels simultaneously (e.g., Telegram for your admin interface), see the Telegram integration guide.
userId consistently to OpenClaw sessions.Integrating AI into a WeChat Mini Program doesn't require a machine learning team or complex cloud architecture. OpenClaw on Tencent Cloud Lighthouse gives you a production-ready AI agent with persistent memory, multi-model support, and always-on availability — deployed in minutes, running for dollars per month.
Build your chat UI in the Mini Program, point it at the gateway, and let OpenClaw handle the intelligence.