Trae Agent: An LLM-Based Agent for General Software Engineering Tasks

Trae Agent: An LLM-Based Agent for General Software Engineering Tasks

Summary

Trae Agent is an LLM-based agent designed for general-purpose software engineering tasks, offering a powerful CLI interface that understands natural language instructions. It enables complex software engineering workflows using various tools and LLM providers, featuring a transparent, modular, and research-friendly architecture. This project is ideal for studying AI agent architectures and developing novel agent capabilities.

Repository Info

Updated on November 30, 2025
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agentllmsoftware-engineeringPythonAIDeveloper ToolsCLIAutomation

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Introduction

Trae Agent, developed by Bytedance, is an innovative LLM-based agent tailored for a wide range of software engineering tasks. It provides a robust command-line interface (CLI) that can interpret natural language instructions and execute intricate software development workflows. Unlike many other CLI agents, Trae Agent boasts a transparent and modular architecture, making it an ideal platform for researchers and developers to study AI agent architectures, conduct ablation studies, and innovate new agent capabilities. Written in Python, it supports multiple LLM providers and offers a rich ecosystem of tools.

Key features include Lakeview for concise summarization of agent steps, multi-LLM support (OpenAI, Anthropic, Google Gemini, OpenRouter, Ollama, Doubao), a rich tool ecosystem for file editing and bash execution, an interactive mode, and detailed trajectory recording for debugging and analysis.

Installation

To get started with Trae Agent, follow these simple steps:

Requirements

  • UV for dependency management.
  • An API key for your chosen LLM provider (e.g., OpenAI, Anthropic, Google Gemini).

Setup

git clone https://github.com/bytedance/trae-agent.git
cd trae-agent
uv sync --all-extras
source .venv/bin/activate

Configuration

YAML Configuration (Recommended):

  1. Copy the example configuration file: 
    cp trae_config.yaml.example trae_config.yaml
  2. Edit trae_config.yaml with your API credentials and preferences. This file is ignored by Git to protect your sensitive information.

Example trae_config.yaml snippet:

agents:
  trae_agent:
    enable_lakeview: true
    model: trae_agent_model
    max_steps: 200
    tools:
      - bash
      - str_replace_based_edit_tool
      - sequentialthinking
      - task_done

model_providers:
  anthropic:
    api_key: your_anthropic_api_key
    provider: anthropic
  openai:
    api_key: your_openai_api_key
    provider: openai

models:
  trae_agent_model:
    model_provider: anthropic
    model: claude-sonnet-4-20250514
    max_tokens: 4096
    temperature: 0.5

Environment Variables (Alternative):

You can also configure API keys using environment variables, typically stored in a .env file:

export OPENAI_API_KEY="your-openai-api-key"
export ANTHROPIC_API_KEY="your-anthropic-api-key"
# ... and so on for other providers

Examples

Trae Agent offers various ways to interact with it, from basic task execution to advanced Docker integration.

Basic Commands

# Simple task execution
trae-cli run "Create a hello world Python script"

# Check configuration
trae-cli show-config

# Interactive mode
trae-cli interactive

Provider-Specific Examples

# OpenAI
trae-cli run "Fix the bug in main.py" --provider openai --model gpt-4o

# Anthropic
trae-cli run "Add unit tests" --provider anthropic --model claude-sonnet-4-20250514

# OpenRouter (access to multiple providers)
trae-cli run "Review this code" --provider openrouter --model "anthropic/claude-3-5-sonnet"

# Ollama (local models)
trae-cli run "Comment this code" --provider ollama --model qwen3

Docker Mode Commands

Trae Agent can execute tasks within Docker containers, providing isolated environments.

# Run a task in a new Docker container
trae-cli run "Add tests for utils module" --docker-image python:3.11

# Attach to an existing Docker container
trae-cli run "Update API endpoints" --docker-container-id 91998a56056c

Interactive Mode Commands

In interactive mode, you can use:

  • Type any task description to execute it
  • status - Show agent information
  • help - Show available commands
  • clear - Clear the screen
  • exit or quit - End the session

Why use Trae Agent?

Trae Agent stands out as a powerful and flexible tool for software engineers and researchers alike. Its core strength lies in its ability to understand and act upon natural language instructions, automating complex development tasks. The project's emphasis on a transparent and modular architecture makes it an excellent choice for those looking to delve deeper into the mechanics of AI agents, allowing for easy modification, extension, and analysis of its framework. This research-friendly design fosters innovation and community contribution.

Beyond its architectural advantages, Trae Agent offers practical benefits such as broad multi-LLM support, a comprehensive suite of tools for common engineering tasks, an interactive conversational interface for iterative development, and robust trajectory recording for detailed debugging. Its flexible YAML-based configuration and straightforward installation ensure a smooth developer experience, making it a valuable asset for enhancing productivity and exploring the future of AI-driven software development.

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