TODO List

Completed Features

• Launch the sandbox only after the first file system or bash tool is called
• Add Clarification Process for the whole process
• Implement Context Summarization Mechanism to avoid context explosion
• Integrate MCP (Model Context Protocol) for extensible tools
• Add file upload support with automatic document conversion
• Implement automatic thread title generation
• Add Plan Mode with TodoList middleware
• Add vision model support with ViewImageMiddleware
• Skills system with SKILL.md format

Planned Features

• Pooling the sandbox resources to reduce the number of sandbox containers
• Add authentication/authorization layer
• Implement rate limiting
• Add metrics and monitoring
• Support for more document formats in upload
• Skill marketplace / remote skill installation
• Optimize async concurrency in agent hot path (IM channels multi-task scenario)
  • Replace time.sleep(5) with asyncio.sleep() in packages/harness/deerflow/tools/builtins/task_tool.py (subagent polling)
  • Replace subprocess.run() with asyncio.create_subprocess_shell() in packages/harness/deerflow/sandbox/local/local_sandbox.py
  • Replace sync requests with httpx.AsyncClient in community tools (tavily, jina_ai, firecrawl, infoquest, image_search)
  • Replace sync model.invoke() with async model.ainvoke() in title_middleware and memory updater
  • Consider asyncio.to_thread() wrapper for remaining blocking file I/O
  • For production: use langgraph up (multi-worker) instead of langgraph dev (single-worker)

Resolved Issues

• Make sure that no duplicated files in state.artifacts
• Long thinking but with empty content (answer inside thinking process)