coreweave/cwsandbox-client v1.12.0

v1.12.0

Repository: coreweave/cwsandbox-client

Tag: v1.12.0

Published: 2026-09-02T01:50:09Z

Prerelease: no

Release notes:

v1.12.0 (2026-09-02)

_This release is published under the Apache-2.0 License._

Features

• Add multi-container support (#159, `841b77b`)

• feat: add multi-container create and named targeting

Callers can pass more than one container on create, share volumes by mount, and name a container on exec, files, logs, and shell. Empty container still targets the primary.

• fix: keep remote functions single-container and tighten container validation

Session containers= defaults no longer leak into @session.function(). Reject string Container.args, check per-container secret env_var conflicts, and treat proto3 exit_code=0 as absent until the container is terminal.

• test: restore staticmethod on create-request helper

After stacking on the create-spec branch, the helper must not bind the test instance as a Sandbox.run() command argument.

• fix: echo observed containers without create-time name checks

Get/list/poll was reconstructing Container() and re-running reserved-name and working_dir validators, which can fail the whole list when the server echoes platform sidecars. Document that containers= replaces leftover single-container SandboxDefaults instead of merging them.

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Detailed Changes: v1.11.0...v1.12.0