coreweave/cwsandbox-client v0.23.0

v0.23.0

Repository: coreweave/cwsandbox-client

Tag: v0.23.0

Published: 2026-05-08T18:42:19Z

Prerelease: no

Release notes:

v0.23.0 (2026-05-08)

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

Documentation

• Clarify mounted_files are read-only at runtime (`d0b6895`)

Update docstrings across Sandbox.run(), Session.sandbox(), and @session.function() to document that mounted files are read-only and suggest using write_file() for writable files.

https://claude.ai/code/session_01BrtogWK3Y6KWdcLNsKxxJV

Features

• Remove pickle serialization from remote functions (`12056f3`)

BREAKING CHANGE: Serialization, FunctionSerializationError, and the serialization= keyword argument on Session.function() and RemoteFunction are removed. JSON is the only serialization mode for remote functions; arguments, closures, captured globals, and return values must be JSON-serializable.

Breaking Changes

• serialization, FunctionSerializationError, and the serialization= keyword argument on Session.function() and RemoteFunction are removed. JSON is the only serialization mode for remote functions; arguments, closures, captured globals, and return values must be JSON-serializable.

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Detailed Changes: v0.22.0...v0.23.0