Code · backend

Use DeepSeek Coder V2 with Express.js

Updated 2026-05-21 · By XALEN

How to use DeepSeek Coder V2 (Code, 236B (21B active)) with Express.js. Install, authenticate, and make your first API call in minutes. Working code example included.

Model

DeepSeek Coder V2

236B (21B active) · 128K context · $0.03 input

Framework

Express.js

backend · npm install xalen-sdk express

1. Install

npm install xalen-sdk express

2. Code

const express = require('express');
const XALEN = require('xalen-sdk');

const app = express();
app.use(express.json());
const client = new XALEN({ apiKey: 'xln_test_YOUR_KEY' });

app.post('/chat', async (req, res) => {
  const response = await client.chat.completions.create({
    model: 'deepseek-coder-v2',
    messages: req.body.messages
  });
  res.json({ reply: response.choices[0].message.content });
});

app.listen(3000);

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Last updated: 2026-05-21