If you've ever wanted a free AI coding assistant that lives inside VS Code, can read your files, run commands, and refactor across multiple files — you're looking for Cline. Combine it with the Model Context Protocol (MCP) and you've got a setup that rivals Cursor and Copilot, for a fraction of the price.
By the end of this tutorial you will have a working coding agent that uses DeepSeek V3.2 through HolySheep AI, costs roughly 97% less than Claude Sonnet 4.5, and replies with a median time-to-first-token of 47 ms. No prior API experience required — let's go.
What Are Cline, MCP, and DeepSeek V3.2?
- Cline — a free, open-source VS Code extension that turns any OpenAI-compatible LLM into a coding agent. Think of it as a junior developer that lives inside your editor.
- MCP (Model Context Protocol) — a standard that lets Cline plug in "tools" like filesystem access, GitHub, databases, and your own scripts.
- DeepSeek V3.2 — an open-weight coding model that scores within a few points of GPT-4.1 on HumanEval but costs about 19× less per token.
- HolySheep AI — a unified API gateway that routes your requests to many models at near-domestic pricing (¥1 = $1, vs. the usual ¥7.3 per dollar), accepts WeChat Pay and Alipay, and currently serves requests with a measured median TTFT of 47 ms for DeepSeek V3.2.
What You'll Need (5-Minute Checklist)
- Windows, macOS, or Linux computer
- VS Code (free — download from
code.visualstudio.com) - Node.js 18+ installed — verify with
node -vin a terminal; it must print 18 or higher - An email address for your HolySheep AI account
- About 10 minutes of free time
Screenshot hint: open VS Code's Extensions panel with Ctrl+Shift+X (Windows/Linux) or Cmd+Shift+X (macOS).
Step 1 — Install the Cline Extension
Open VS Code → click the Extensions icon on the left sidebar → search "Cline" → click Install on the one published by saoudrizwan. A new chat-bubble icon will appear in your left sidebar — click it to open the Cline panel.
Screenshot hint: the Cline panel has a chat box at the bottom and a "Settings" gear at the top-right.
Step 2 — Create Your HolySheep AI Account
Head to HolySheep AI's signup page. New accounts receive free credits on registration — enough to run several thousand coding prompts before you ever spend a cent. Payment options include WeChat Pay and Alipay, which is a major convenience if you're based in Asia. The exchange rate is locked