simboba 0.1.2

A lightweight tool for generating annotated eval datasets and running LLM-as-judge evaluations

simboba

     ( )
   .-~~~-.
  /       \
  |  ===  |
  | ::::: |
  |_:::::_|
    '---'

Lightweight eval tracking with LLM-as-judge. Run evals as Python scripts, track results in a web UI.

Installation

pip install simboba

Quick Start

boba init          # Create boba-evals/ folder with templates
boba magic         # Print AI prompt to help configure your evals
boba run           # Run your evals (handles Docker automatically)
boba serve         # View results at http://localhost:8787

Commands

Command	Description
boba init	Create boba-evals/ folder with starter templates
boba magic	Print detailed AI prompt to configure your eval scripts
boba setup	Print basic setup instructions
boba run [script]	Run eval script (default: test_chat.py). Handles Docker automatically
boba serve	Start web UI to view results
boba datasets	List all datasets
boba generate "description"	Generate a dataset from a description
boba reset	Delete database

Writing Evals

Evals are Python scripts. Edit boba-evals/test_chat.py:

from simboba import Boba
from setup import get_context, cleanup

boba = Boba()

def agent(message: str) -> str:
    """Call your agent and return its response."""
    ctx = get_context()
    response = requests.post(
        "http://localhost:8000/api/chat",
        json={"user_id": ctx["user_id"], "message": message},
    )
    return response.json()["response"]

if __name__ == "__main__":
    try:
        # Option 1: Single eval
        boba.eval(
            input="Hello",
            output=agent("Hello"),
            expected="Should greet the user",
        )

        # Option 2: Run against a dataset
        # boba.run(agent, dataset="my-dataset")

        print("Done! Run 'boba serve' to view results.")
    finally:
        cleanup()

Creating Datasets

Via CLI

boba generate "A customer support chatbot for an e-commerce site"

Via Web UI

1. boba serve
2. Click "New Dataset" → "Generate with AI"
3. Enter a description of your agent

Via API

from simboba import Boba
boba = Boba()
boba.run(agent, dataset="my-dataset")  # Uses dataset created above

Test Fixtures (setup.py)

Edit boba-evals/setup.py to create test data your agent needs:

def get_context():
    """Create test fixtures, return context dict."""
    user = create_test_user(email="[e-mail]")
    return {
        "user_id": user.id,
        "api_token": user.generate_token(),
    }

def cleanup():
    """Clean up test data after evals."""
    delete_test_users()

Environment Variables

Boba loads .env automatically. Set your LLM API key for judging (Claude Haiku 4.5 is the default):

ANTHROPIC_API_KEY=sk-ant-...   # Required for default model (Claude)
OPENAI_API_KEY=sk-...          # For OpenAI models
GEMINI_API_KEY=...             # For Gemini models

Note: Without an API key, boba falls back to a simple keyword-matching judge which is less accurate.

Project Structure

your-project/
├── boba-evals/
│   ├── setup.py        # Test fixtures
│   ├── test_chat.py    # Your eval script
│   ├── .boba.yaml      # Config (docker vs local)
│   └── simboba.db      # Results database
└── ...

License

MIT