Installation

Install Veska with pip and start building in minutes.

Prerequisites

Python 3.10 or higher
An API key from Anthropic (Claude) or OpenAI

1. Install Veska

bash

pip install veska

2. Set up API keys

Create a .env file in your project root with your API keys:

.env

# At least one provider key is required
ANTHROPIC_API_KEY=sk-ant-...
OPENAI_API_KEY=sk-...

Provider support

You only need one API key. If you set ANTHROPIC_API_KEY, you can use Claude models. If you set OPENAI_API_KEY, you can use OpenAI models. You can use both at the same time — each agent can have its own model.

3. Verify installation

test.py

from veska import Agent

agent = Agent(
    name="test",
    system_prompt="You are a helpful assistant.",
    model="claude-sonnet-4-6",
)

result = agent.run("Say hello!")
print(result.output)