Deep dives, practical guides, and incident analyses from engineers who build Safeguard. No fluff, no vendor FUD — just what you need to ship secure software.
Codex pairs a sandbox mode with an approval policy. What read-only, workspace-write and danger-full-access mean, network defaults, protected paths and presets.
Codex rules decide which commands may run outside the sandbox. How prefix_rule works, the strictest-wins order, where files live and how to test them.
Codex memories are off by default and stored locally under ~/.codex/memories. What they hold, the config keys, per-chat controls, and why not to store secrets.
Codex admins can enforce limits with requirements.toml, set overridable defaults, or push cloud policy. File paths, precedence and keys you can pin.
Codex reads a global file, then one AGENTS.md per directory from the repo root down, capped at 32 KiB. Override files, fallback names and how to verify the chain.
How to use a CODEOWNERS file so automated fix pull requests reach the team that owns the code, with pattern order, branch rules and common mistakes.
Common CODEOWNERS mistakes on GitHub: pattern order, split owner lines, owners without write access, the size limit and unsupported syntax, with fixes.
In Cloudflare Workers a secret is an environment variable whose value is hidden after you set it. Here is when to use vars, secrets and local dev files.
A Workers binding gives code access to a resource without ever handing it a token. Here is why that shrinks leak risk and what to watch for.
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