Qwen Code Configuration Guide

Qwen Code Configuration Guide

:rocket: Qwen Code User Guide and Full Introduction: Let AI Supercharge Your Development Workflow :bulb:

Qwen Code is a powerful command-line AI workflow tool, deeply optimized for the Qwen3-Coder model family and inspired by Gemini CLI. It not only helps you understand complex codebases and automate development tasks, but also significantly improves coding efficiency, making it an intelligent assistant for everyday development work.

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Q: Why does Qwen Code consume tokens so quickly?

A: Qwen Code may call the API multiple times, which can consume a large number of tokens. Please refer to the following methods to control token usage:

• Keep the working directory lean It is recommended to start in a specific project directory. Too many files in the startup directory (such as the root directory) will increase token consumption.
• Set a token limit Create a .qwen/settings.json file in the project root and restart Qwen Code. Use sessionTokenLimit to control the token usage per API call:

  {
    "sessionTokenLimit": 32000
  }

  Qwen Code may call the API multiple times, and the token usage for a single question may exceed the value of sessionTokenLimit.

• Use compress/clear commands Enter the following commands to reduce token usage:
  • /compress Compress the conversation history so you can continue chatting within the token limit.
  • /clear Clear all conversation history and start over.

:bar_chart: Price Comparison

Qwen Code	qwen3-coder-480b-a35b-instruct	Best experience, but also the most expensive; roughly one-third the price of Claude
Qwen Code	qwen3-coder-plus	Slightly lower in both price and experience than 480b
Qwen Code	qwen-plus	The Qwen family’s flagship model, dynamically updated; currently equivalent to qwen3-plus, balancing reasoning ability and cost advantages. Highly recommended
Qwen Code	qwen3-30b-a35b-instruct-2507	Distilled from 480B; small size, big intelligence, lower price

:check_mark_button: Currently performs better than most open-source coding agents and demonstrates strong understanding in complex tasks.

:glowing_star: What Is Qwen Code?

Qwen Code is a command-line AI coding assistant from Tongyi Lab, designed to improve development efficiency. It leverages the powerful Qwen3-Coder models (such as qwen3-coder-480b-a35b-instruct) to enable:

• :check_mark_button: Ultra-long-context code understanding (supports large-project analysis)
• :check_mark_button: Intelligent code refactoring and generation
• :check_mark_button: Automated Git and file operations
• :check_mark_button: Unit tests, documentation generation, and security audits
• :check_mark_button: Support for multi-API-platform configuration and flexible deployment

:loudspeaker: Special note: Qwen Code may initiate multiple API calls in a single interaction, so token consumption can be relatively high (similar to Claude Code). We are continuously optimizing call efficiency.

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:hammer_and_wrench: Installation Guide

Prerequisites

Make sure Node.js v20 or later is installed:

node -v
# Should output v20.x or later

If it is not installed, run:

curl -qL https://www.npmjs.com/install.sh | sh

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Method 1: Install via npm (Recommended)

npm install -g @qwen-code/qwen-code@latest

Verify the installation:

qwen --version
# If a version number is displayed, the installation was successful

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Method 2: Install from Source

git clone https://github.com/QwenLM/qwen-code.git
cd qwen-code
npm install
npm install -g .

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:electric_plug: API Configuration Methods

Qwen Code supports multiple API providers and can be configured through environment variables or a .env file.

Method 1: Environment Variables

export OPENAI_API_KEY="your_api_key"
export OPENAI_BASE_URL="https://api.4allapi.com/v1"
export OPENAI_MODEL="qwen3-coder-480b-a35b-instruct"

Method 2: .env File in the Project Root

Create a .env file:

OPENAI_API_KEY=your_api_key_here
OPENAI_BASE_URL=https://api.4allapi.com/v1
OPENAI_MODEL=qwen3-coder-480b-a35b-instruct

If your project root already has a .env file, and to avoid confusion (this does not actually affect the result), you can: Root directory

---.qwen (folder)

-------.env (file)

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:rocket: Quick Start

Go to any project directory and launch Qwen Code:

cd your-project/
qwen

You will see an interactive command-line interface. Enter the following sample prompts to get started:

> Explain the structure of this project
> Help me refactor this function
> Generate unit tests for this module

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:jigsaw: Core Features Explained

:mag: 1. Code Understanding and Editing (Beyond Context Limits)

Even if the project is large and contains many files, Qwen Code can help you:

• Analyze the overall architecture
• Clarify module dependencies
• Identify key entry points and core logic

Common prompts:

> Describe the main architectural components of the system
> Find all API endpoints and their authentication methods
> List the main design patterns used in the project
> Generate a dependency graph for a module

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:arrows_counterclockwise: 2. Workflow Automation

Say goodbye to repetitive work! Qwen Code can automatically perform common development tasks:

:check_mark_button: Automated Git Operations

> Analyze commits from the past 7 days and group them by feature
> Generate a changelog based on recent commits
> Find all TODO comments and create GitHub issues

✅ Batch File Processing

> Convert all images in the directory to PNG format
> Rename test files to the *.test.ts pattern
> Remove all console.log statements

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🛠️ 3. Code Development and Refactoring

Whether you are building new features or improving legacy code, Qwen Code can help efficiently:

:bulb: Refactoring Suggestions

> Refactor this class to follow the SOLID principles
> Convert callback functions to async/await
> Split this large module into smaller components

🧱 Code Generation Capabilities

> Create an Express server with authentication
> Write a React component in TypeScript with tests
> Implement a rate-limiting middleware

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🐞 4. Debugging and Code Analysis

Quickly identify performance bottlenecks and security risks:

:mag_right: Performance Analysis

> Find the performance issues in this React component
> Detect N+1 query issues in the codebase

🔐 Security Audit

> Check for SQL injection risks
> Find all hardcoded passwords or API keys

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📚 5. Documentation and Test Generation

No more writing documentation and tests by hand!

> Generate JSDoc comments for all public APIs
> Write unit tests for this component, including edge cases
> Generate API documentation in OpenAPI format
> Write a README for this module

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🧾 Session Management (Control Token Usage)

Because AI models have context-length limits, Qwen Code provides a flexible session management mechanism to help you control cost and performance.

Set a Session Token Limit

Create a configuration file in your home directory:

mkdir -p ~/.qwen

Edit ~/.qwen/settings.json:

{
  "sessionTokenLimit": 32000
}

📝 Note: This limit applies to the context length of a single conversation, not the cumulative total across multiple API calls.

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Session Control Commands

/help	Show all available commands
/clear	Clear the current session history and start over
/compress	Compress the conversation history to save tokens and continue using it
/status	View current token usage and limits
/exit或/quit	Exit Qwen Code

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:test_tube: Practical Usage Examples

:jigsaw: Scenario 1: Quickly Understand a New Project

cd new-project/
qwen

Enter:

> What are the main parts of this system's architecture?
> Which files contain the core business logic?
> How does the data flow?
> Which third-party dependencies are used?

👉 Qwen Code will help you map out a clear picture of the project.

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:wrench: Scenario 2: Code Refactoring and Optimization

After selecting a piece of complex code, ask:

> How can this code be optimized?
> How can readability and performance be improved?
> Does it follow best practices?

Qwen Code will provide refactoring suggestions and may even generate improved code directly.

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:page_facing_up: Scenario 3: Automatically Generate Documentation and Tests

Ask about a specific module:

> Generate complete unit tests for this service layer
> Add JSDoc comments to all functions
> Generate a draft OpenAPI document for this API

You can get high-quality output in just a few minutes.

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:rotating_light: Notes and Best Practices

:small_blue_diamond: Token usage	A single conversation turn may trigger multiple API requests, so monitor usage carefully
:small_blue_diamond: Context length	Use /compress and /clear appropriately to control session length
:small_blue_diamond: Sensitive information	Do not upload code containing sensitive data or secrets
:small_blue_diamond: Model selection	qwen3-coder-480b-a35b-instruct is recommended for the best results
:small_blue_diamond: Network environment	api.4allapi.com global CDN acceleration makes it fast no matter where you use it

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:toolbox: Common Shortcuts

Ctrl + C	Cancel the current operation
Ctrl + D	Exit the program when the line is empty
↑ / ↓	Browse command history
Tab	Autocomplete commands (if supported)

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:bullseye: Summary: Why Choose Qwen Code?

:brain: Strong code understanding	Supports ultra-long contexts, suitable for large projects
:gear: Highly automated	Automatically handles repetitive tasks such as Git, files, and tests
:globe_with_meridians: The world’s strongest open-source large-model family	Qwen occupies more than half of the top ten spots in global model rankings
:speech_balloon: Natural language interaction	Complete complex development tasks using Chinese
:chart_increasing: Continuously improving	The team is actively enhancing API efficiency and response quality

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:mega: Start Your AI Coding Journey Now!

# Install
npm install -g @qwen-code/qwen-code@latest

# Enter the project
cd my-awesome-project

# Launch Qwen Code
qwen

Then ask boldly:

> Help me set up a Node.js backend with JWT authentication
> Convert this Python script to TypeScript
> Analyze the performance bottlenecks in this project

💬 Let Qwen Code become your personal “AI architect” and “all-purpose programmer”!

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:bullseye: Best for:

• Frontend and backend developers
• DevOps engineers
• Technical leads
• Open-source contributors
• Programming beginners

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:speech_balloon: One-sentence summary:

Qwen Code = smart terminal + code brain + automation engine, letting you “direct” the entire development process in natural language!

:party: Install it now, give it a try, and step into a new era of AI-powered programming!

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