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Installation

Install the Simplex Python SDK and CLI from PyPI: 
pip install simplex
Requires Python 3.9 or higher.
After installation, both the Python SDK (from simplex import SimplexClient) and the simplex CLI command are available.

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Authentication

simplex login
This opens a browser-based OAuth flow. Credentials are saved to ~/.simplex/credentials and used automatically by the SDK and CLI. If you are working in a headless environment, use the --api-key flag: 
simplex login --api-key YOUR_API_KEY

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Quick verification

After installing and configuring authentication, verify that everything is working: 
simplex whoami
simplex workflows list

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Next steps