[BUG] Agents are unable to create files

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

When I try to run a custom agent, the agent completes successfully, but none of the files it claims to have created actually exist.

What Should Happen?

The agent should have created the files it claims to have created.

Error Messages/Logs

Steps to Reproduce

1. Create a custom agent. (Mine happens to be a python-agent installed at ~/.claude/agents/)
2. Invoke the agent to implement some feature
3. The agent completes successfully and lists the files it claims to have created

None of the files actually exist.

I asked Claude to investigate why the agent was failing and it indicated that it is because the agent is executing within a sandboxed environment.

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

1.0.111

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Other

Additional Information

Ubuntu 22.04.1