Configure Cline in VS Code with a cheap API: 4 steps

Cline is a coding-agent extension that lives right inside VS Code. It natively supports the "OpenAI Compatible" provider type — just point it at the Cho Tai Khoan gateway and you can use 26 models (Claude, GPT, Gemini, DeepSeek…) with one key, paying a fixed package from $0.72 (≈ 19.000đ) instead of topping up USD yourself.

Step 1 — Get a key first

1. Go to the API gateway home page, pick a package and pay (USDT, VietQR or MoMo) — the system issues a redeem code automatically.
2. Redeem the code right on the page and receive a key starting with sk-ctk-.

Step 2 — Open the Cline settings

1. No Cline yet: in VS Code (or Antigravity), press Ctrl + Shift + X to open Extensions, search for Cline, press Install and wait for it to finish.
2. Click the Cline icon in the left sidebar to open the Cline panel, then click the gear icon (Settings) at the top of the panel.
3. In API Provider, choose OpenAI Compatible.

Step 3 — Fill in the 3 gateway details

• Base URL: https://api.chotaikhoan.com/v1
• API Key: your sk-ctk-... key
• Model ID: the name of the model you want — for example claude-sonnet-5 for everyday work, claude-opus-5 for hard tasks, deepseek-v4-pro for large cost-sensitive jobs (copy the exact name from the Models & pricing section on the gateway home page).

When you are done, press the Done button in the top-right corner to save — without pressing Done, your settings are not saved. This is the most common mistake at this step.

Step 4 — Check

Create a new task in Cline and send a simple request: "Reply with exactly one word: running". If Cline answers, you are connected. Then check the tokens charged on the gateway Check key page to cross-check.

Common errors

• 401 error / wrong key: check the pasted key has no extra spaces; the key must start with sk-ctk-.
• Model not found: the Model ID must be copied character-for-character from the Models & pricing section on the gateway home page.
• Out of quota: open the Check key page to see what is left; if it is really empty, buy another package — the quota stacks onto your old key.
• Still stuck: message us on Telegram @chotaikhoandotcom and we will walk you through it step by step.

Using Roo Code or Continue in VS Code instead? See the VS Code guide. Using Cursor? See the Cursor guide.