Sail SDK
Python client library for Sail, the most cost-efficient infrastructure provider for long-horizon agents.
Documentation
See the Sail documentation for quickstarts, API guides, and examples.
Installation
Install the package with pip:
pip install sail-sdk
Or with uv:
uv add sail-sdk
Log in before using the CLI:
sail auth login
The CLI stores your API key in ~/.sail/auth.toml (readable only by you) and
non-secret settings in ~/.sail/config.toml. For Python SDK scripts, CI, and
headless agents, set an API key explicitly:
export SAIL_API_KEY=sk_...
Open the interactive CLI shell with:
sail shell
The shell can list, create, SSH into, and terminate sailboxes from one prompt.
What's inside
The SDK covers Sail's three surfaces: hosted inference
(sail.inference), Sailboxes (sandboxed VMs for agent workloads,
sail.Sailbox), and Voyages, automatic telemetry that records an agent
run as a trace of named agents, spans, events, and attributed model calls
(sail.voyage). See the Sail documentation
for quickstarts and API guides.
Support
Questions or issues? Contact support@sailresearch.com.
3 maintainers
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