DarwinAgent

Evolution for the Agent Era

An open Python framework for experience-driven recursive self-improvement of agents. Run a task, propose changes to its assets, evaluate candidates independently, and retain effective versions and experience. Version 0.1.1 is experimental; improvement must be measured.

中文使用指南 · English guide

Install

Python 3.11 or newer is required. One package provides both the command-line tool and the Python API:

python -m pip install darwinagent
darwinagent --version

Configure a model

Live execution requires your own OpenAI-compatible Chat Completions endpoint. Create .env in the directory where you run commands:

DARWINAGENT_BASE_URL=https://your-provider.example/v1
DARWINAGENT_MODEL=your-model-name
DARWINAGENT_API_KEY=your-api-key

Replace all three placeholders with your API base URL, supported model name, and key. Do not include /chat/completions in the base URL. All roles share this model by default. The CLI loads the current directory's .env; existing environment variables take precedence.

Run the live demo

Check the connection with one real model request, then run two rounds:

darwinagent doctor --check-model --output runs/doctor
darwinagent demo --mode live --rounds 2 --output runs/demo-live \
  --max-requests 40 --timeout 1800

The demo asks who maintained a device and when, then tries to improve its prompt using independent answer scoring. Results go to runs/demo-live/. Start with demo-summary.json for decisions and reasons; published/current.json points to retained assets.

The cap counts HTTP attempts including retries; the timeout bounds the whole run. Ties are rejected and scores need not improve. Add --resume to continue an existing run, or use a fresh output directory for another experiment.

Use the Python API

Install the same package, then use the complete live Python example. It explicitly loads .env, creates Config, and passes it to run_demo(..., mode="live", config=config).

For your own records and questions, follow the custom task tutorial, including a complete Pipeline script and an independent evaluator.

Try without model credentials

darwinagent demo --mode replay --rounds 2 --output runs/demo-replay

Replay uses scripted model responses with no network requests or credentials. Expect completion, a first accepted candidate, and a second rejected on a tie. It demonstrates mechanics, not model learning or benchmark gains.

Documentation

• Quickstart
• Model configuration and troubleshooting
• 中文快速开始
• Source and issues

Distributed under the MIT license.