How to Fix Codex default_permissions Error Without Disabling the Sandbox

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A common Codex configuration error occurs when permission profiles are defined but no default profile is selected, which does not require disabling the sandbox to resolve. Developers can fix this by either consolidating existing sandbox settings and removing unused permission blocks, or by setting a named default_permissions profile with a matching configuration block. Setting approval_policy to 'never' only suppresses prompts and does not expand sandbox boundaries, so it cannot substitute for properly defining permission limits. To verify the setup, users should inspect all loaded configuration layers, confirm the Codex version, and test write and network behavior separately using harmless operations. A bounded profile-resolution command can confirm that a named profile resolves correctly, but additional tests are needed to validate actual filesystem and network access.

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ProgrammingDEV Community ·

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