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LoongFlow

Project Context

LoongFlow is an Evolutionary Agent Development Framework designed to build autonomous agents that improve through a Plan-Execute-Summary (PES) paradigm. It moves beyond simple ReAct loops to structured evolutionary processes, focusing on high efficiency and stability for complex tasks like mathematical discovery and machine learning competitions (AutoML).

Repository Overview

Core Framework (src/)

  • src/evolux/: The core logic for agent architectures.
    • evolve/: Implementation of PESAgent (Evolutionary algorithms).
    • react/: Implementation of ReActAgent (Standard reasoning loops).
    • base/: Abstract base classes.
  • src/agentsdk/: Foundational building blocks.
    • tools/: Tool interfaces and implementations.
    • memory/: Memory management for agents.
    • logger/, message/, models/, token/: Utility modules.

Agent Implementations (agents/)

  • agents/math_agent/: Agents for open-ended math and algorithm optimization.
    • Contains evolve_planner, evolve_executor, evolve_summary modules.
    • Examples: Located in agents/math_agent/examples/.
  • agents/ml_agent/: Agents specialized for Machine Learning tasks (Kaggle/MLE-Bench).
    • Contains evocoder, evaluator and specific ML workflow logic.
    • Examples: Located in agents/ml_agent/examples/.

Configuration & Scripts

  • pyproject.toml: Project dependencies and configuration.
  • uv.lock: Dependency lock file (managed by uv).
  • run_task.sh: Entry point for General Evolve tasks.
  • run_ml.sh: Entry point for ML Evolve tasks.

Tech Stack & Dependencies

  • Language: Python 3.12+ (Strict requirement).
  • Package Manager: uv (Preferred over pip/conda).
  • LLM Integration: Supports OpenAI, Gemini, DeepSeek via config.
  • Core Libraries: Pydantic (data validation), PyTorch (implied for ML tasks).

Development Workflow

1. Environment Setup

Always use uv for dependency management.

uv venv .venv --python 3.12
source .venv/bin/activate
uv pip install -e .

2. Running Agents

Do not run python scripts directly if a shell wrapper exists.

General Evolve Agent:

# Install task-specific deps first
uv pip install -r ./agents/math_agent/examples/<task_name>/requirements.txt
# Run task
./run_math.sh <task_name> --background
# Logs are found in the example directory's run.log

ML Evolve Agent:

./run_ml.sh init
./run_ml.sh run <task_name> --background
# Logs are found in the example directory's agent.log

3. Configuration

  • LLM configurations are stored in task_config.yaml within specific example directories.
  • Ensure llm_config follows the schema: url, api_key, model.

Coding Guidelines

Architecture Patterns

  • PES Paradigm: When designing agents, strictly separate concerns into Planner (strategy), Executor (action/coding), and Summary (evaluation/learning).
  • Modularity: New tools should be added to agentsdk/tools if generic, or kept local to the agent if specific.

Style & Standards

  • Type Hinting: Enforce Python type hints for all public interfaces.
  • Asynchronous: The framework relies heavily on async/await. Ensure run() methods are awaitable.
  • Path Handling: Use relative paths carefully; agent execution contexts often depend on the root directory.

Testing

  • Tests are located in tests/ mirroring the src/ structure.
  • Run tests using: 
    uv run pytest

Thinking Process for AI

  1. Identify the Scope: Are you modifying the Core Framework (src/evolux) or a Specific Agent (agents/)?
  2. Respect the Abstraction: Do not hardcode agent logic into agentsdk. Keep the SDK generic.
  3. Check Dependencies: If adding a new library, check if it belongs in pyproject.toml (core) or a specific example's requirements.txt.
  4. Safety: When modifying executor modules, ensure code execution sandboxing or warnings are preserved, as these agents generate and run code.