Claude Code 2.1.309 closes several sandboxAn isolated environment where AI-generated code or agent actions run without being able to touch anything real.Full definition → and permission-check gaps, including shell startup files running outside the sandbox and symlinked denyWrite globs not applying. If you rely on sandboxing or deny rules for unattended agents, update.
Terms in this piece · Glossary
sandbox — An isolated environment where AI-generated code or agent actions run without being able to touch anything real.
MCP — The Model Context Protocol — an open standard that lets any AI assistant plug into any tool or data source without custom integration code.
