CodeRun AI Agent 🚀
CodeRun AI Agent is a VS Code extension that uses Qwen 3.7 through the browser API (chat.qwen.ai) as an autonomous coding agent. It operates via a Think → Plan → Act → Verify loop, reading/writing/editing files, running terminal commands, and searching code — all by embedding tool calls as text JSON blocks in the conversation.
🌟 How It Works
Unlike traditional AI extensions that use native function-calling APIs, CodeRun communicates with Qwen through the browser chat API — the same API the chat.qwen.ai website uses. Tool calls are embedded as json {"tool_calls":[...]} blocks in Qwen's response text, then parsed and executed by the extension.
User Prompt → Extension → Qwen Browser API → Qwen responds with text
→ Extension parses ```json {tool_calls}``` blocks
→ Executes tools (read_file, write_file, run_terminal, etc.)
→ Sends results back to Qwen as next user message
→ Loop continues until task is complete
🔑 Features
| Feature |
Description |
| Agent Loop |
Multi-iteration Think → Plan → Act → Verify loop with up to 20 iterations |
| 19 Tools |
File I/O, directory ops, search, terminal, web requests, planning |
| Terminal Integration |
VS Code shell integration with ANSI cleaning, streaming output, auto shell detection |
| File Checkpoints |
SQLite-backed snapshots before every file modification with one-click undo |
| Diff Review |
Inline Accept/Reject buttons for proposed file changes in the chat UI |
| Permission System |
Per-tool Allow/Deny with persistent Always Allow/Always Deny decisions |
| Thinking Blocks |
Collapsible thought process cards with accumulated reasoning across iterations |
| Tool Cards |
Collapsible execution cards with status, args, and results inline in chat |
| History Restoration |
Full conversation history loaded from Qwen's API with tool call/result reconstruction |
| Custom Context |
Full conversation serialized into every request — own context management |
| Category |
Tools |
| File |
read_file, write_file, edit_file, delete_file, patch_file |
| Directory |
create_folder, delete_folder, list_directory |
| Search |
search_files, find_in_files, list_symbols, get_file_info |
| Terminal |
run_terminal, terminal_input, stop_terminal |
| Web |
web_request |
| Planning |
create_plan, update_plan |
| Utility |
get_current_datetime |
All tools accept multiple parameter name variants (e.g., file_path, filepath, path) for robustness.
🔌 Authentication
Uses cookie-based authentication from chat.qwen.ai. Paste your browser cookie string (containing the token=eyJ... JWT) in the settings panel. The cookie is stored in VS Code's encrypted secrets storage.
📁 Project Structure
src/
├── extension.js ← VS Code activation, IPC bridge, auth, 30+ message types
├── agentLoop.js ← Core agent loop: stream → parse → execute → loop
├── promptBuilder.js ← System prompt assembly with workspace context
├── providerQwen.js ← Qwen Browser API client + context serialization
├── providerManager.js ← Returns Qwen provider
│
├── tools.js ← 18 tool async generators (file, dir, terminal, search, etc.)
├── toolDefinitions.js ← JSON schemas for all tools
├── toolRegistry.js ← Name→impl mapping with alias resolution (bash, read, etc.)
├── toolExecutor.js ← Result formatting for LLM context
│
├── terminalManager.js ← VS Code Terminal API, shell integration, child_process fallback
├── permissions.js ← Permission system with persistent decisions
├── diffManager.js ← Diff patch storage, apply/reject
├── checkpointManager.js ← SQLite file snapshots for undo
│
├── projectKnowledge.js ← SQLite knowledge base (sql.js)
├── searchManager.js ← Search abstraction (SQLite → filesystem fallback)
├── contextManager.js ← Intent classification, editor context
├── planningManager.js ← Plan creation and step tracking
├── executionManager.js ← Plan execution engine
├── verificationManager.js ← Post-execution verification
├── learningManager.js ← Framework/convention detection
├── timelineManager.js ← Chronological event log
│
├── ChatSpace.js/.css ← Chat UI: tool cards, diff cards, terminal cards, thinking blocks
├── Dashboard.js/.css ← Sidebar, settings, conversation list
├── MarkdownRenderer.js ← Client-side markdown → HTML
│
├── constants.js ← System prompt, event types, storage keys
├── config.js ← VS Code settings reader, API key management
├── utils.js ← Shared helpers
├── events.js ← Simple pub/sub event bus
├── symbolParser.js ← Multi-language symbol extractor (JS, TS, Python, Go, Rust, Java, etc.)
├── memoryManager.js ← Simple in-memory store
├── mcpManager.js ← MCP placeholder stub
├── skillsManager.js ← Skill prompt fragments
├── workspaceContext.js ← Workspace folder detection
├── conversationStore.js ← LocalStorage conversation CRUD
├── settingsStore.js ← LocalStorage settings persistence
├── agent.js ← Public agent API wrapper
├── index.html ← Standalone browser entry point
🚀 Quick Start
Prerequisites
Debug
- Open the project in VS Code
- Press
F5 — the Extension Development Host window opens
- Paste your Qwen browser cookie in the login panel
Package
npm install -g @vscode/vsce
vsce package
💻 Tech Stack
| Layer |
Technology |
| Extension Host |
VS Code Extension API (Node.js) |
| Frontend |
Vanilla JS + CSS (no framework) |
| Database |
SQLite via sql.js (WASM) |
| LLM |
Qwen 3.7 Max (browser API) |
| Auth |
Cookie-based (chat.qwen.ai JWT) |
| Build |
None — raw ES modules |
This creates a .vsix file that can be installed via:
code --install-extension ai-agent-<version>.vsix
📦 Repository
Find the source code on GitHub:
License
MIT
