I agree with most of what you said, but wanted to add that another point is there is a different level of trust in code executing from the harness, and code executing from the bash shell by the agent.
I block all network access from bash calls, but want to provide certain tools that can call certain services in a specific way. I can have a tool (or mcp) that does just that, and runs outside of the sandbox.
I block all network access from bash calls, but want to provide certain tools that can call certain services in a specific way. I can have a tool (or mcp) that does just that, and runs outside of the sandbox.